Ergometer Manual English
Contents
1. Resistance unit and gearbox The brake in the ergometer is an eddy current brake which provides resistance by creating an electromagnetic field through which a metal disk runs The resistance of the brake is a function of its angular velocity and the current supplied to it The ergometer gearbox contains two fixed stages of gear reduction which results in an increase in speed of the brake This has two operational benefits 1 The braking force of an electromagnetic brake is a direct function of its speed Increasing the speed decreases the current required for a given resistance A lower current prolongs the life of the power supply 2 The gearbox contains user changeable flymasses to recreate the kinetic energy of riding on the road in the lab The range of outdoor conditions that can be duplicated with a given size of flymass is increased at higher speeds Y To maximize ergometer life the gear selector switch should generally be set on a higher gear rather than a A lower one Asa general rule when operating the ergo with power in excess of 300W particularly at low cadences the Rohloff hub should be set at gear 9 or higher For ergometers with a Shimano N exus hub gear 4 or higher should be used Conversely when operating at very low power levels it is necessary to operate in a lower gear The drivetrain and gearbox themselves provide an internal resistance and even gt with the brake turned completely off at a cadence of 90 rp2. SRM User Manual Online Option amp Ergometer English Language Ath Edition Author AndreaWooles 2006 Schoberer Rad Me technik Table of Contents Usingthe Online option How to use the Online option sssrin 7 Enter a new training session OF test inicien 10 O pening an existing training file cuna 13 Using the Online screen for real time feedback coccion 14 Deleting training files cinco 15 Using the Online option versus the SRM High Performance Ergometer mn 15 SRM Hich Performance Ergometer W hy is it better than other ergometer inicio 16 What does It JO Pi ai 16 HOW dOES IE WO e EE E E E 17 Setting p the ergometer unseren Benin 18 A A NON OG 18 Multilengthicranks aia 19 Setting up the computer S eisen kenn Sl 20 Running the ergometer sssssssssssessrsssrssesssrssnrsernseenstrnnnneensnennnnnennseennnnnnnnnnennnennnnnnnrennnnennnrennrer ae A 20 Demonstration mode ssssserssrsrssrssssrssssrsnsorsnsersnrorsnnorsnnornnnoenornnsennnsonnnsennnnennnnonnnnoennnoene Dr EEE 1 E 22 Resistance unit and gearboX coccion A ee eher nase 23 Ergo flymasses duplicating the kinetic energy of Cycling coccion erase 23 Power SUPPIY anssscnsnneeesesennnssssssannnsnnensernnnsssssannsnneensenennnssssannnnnenannnennnnnssnnnnannnnnnn II 25 Ergometer maintenance uuu fii En A 25 Troubleshooting sssesassnnoonnnneneeesennnnssseonnnnsnnensennnnnssaonnnnnnennennnnnsnasannnanennnnnnn a A 26 Page 5 Finding Points
3. O K to exit The desired cadence will be kept regardless of gearing Page 20 Part X SRM High Performance Ergometer Options Mode MainChart Predefined File Demo Mode Gearing Isocinetic Mode Variable C Fixed 53 4 ra Stop Ergo Button off C on Horse Mode off At Testend Save Data off Coon onatTestend To enable an adjustment of cadence while maintaining a constant flymass angular velocity or if you need a fast reaction of the brake selected Fixed from the Gearing Isokinetic Mode section In this mode the controller will not adjust the brake when the gear selector is moved The exact cadence can be modified by changing the chainring and cog tooth number in the boxes provided and by shifting gears You can also select automatic data downloading at the end of a test by choosing on from the At Testend menu You an also enable an ergometer stop switch which appears on the main control panel which can be used to stop the flymass whenever the rider is not pedalling for instance between repeated sprint efforts Click on OK to save your selections and exit the O ptions screen During a test the ergometer brake can be overridden in several ways using the toggle buttons on the main panel No Brake Brake C lick here to toggle the brake off and click again to turn it back on during a test Pause Resume C lick here to stop the training timer The brake
4. Next Step 0 Heartrate 1 min Save Data Set Marker 00 y Stop Ergo Exit This will bring up the Mode tab ofthe O ptions screen Here you can choose whether you want to start the test or session by starting to pedal choose Cadence or by hitting the Start button You can also choose how you want to end the test either when you stop pedalling select no Cadence or by pressing the End button Then you can select which mode to run the software in Predefined File is a test or session that you ve entered into the software WV O pen End Test will simply show you what you re doing in real time Demo Mode which you can only use with an ergometer jainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence Start Button no Cadence C End Button Cancel Ergometer Mode Predefined File e Open End Test C Demo Mode Select Predefined File if you want to run a session that you ve entered or are going to enter next Page 8 Part IX Using the Online O ption _ EA By clicking on the Main Chart tab along the top you can select how you d like to see your session or test while it s in progress You can select Show always entire test if you want to see your whole session on the screen or Show only the last __ minutes if you have a long session and only want to see say the last 5 min
5. and need to send them to a service centre To maintain your multilength cranks place a small amount of oil on the steel part of the crank and slide it back and forth into the aluminium part This protects it from sweat and will help it to move freely for a long time Page 19 Part X SRM High Performance Ergometer CC _ y Setting up the computer s You will need one computer to run the SRMW in Software for the ergometer This can be a desktop or laptop computer with at least one Serial or USB port so that you can connect the computer with the PowerControl with the O nline cable If you are going to be running the Torque option as well you will need a second computer preferably one that will run in MSDO S mode although it is possible to run PtN ew in normal W indows mode as well This computer should be connected to the ergometer PowerControl by the torque cable V WHEN RUNNING THE CABLES FROM THE ERGO METER TO THE CO MPUTER S TAKE CARETO KEEP THE DATA CABLES ON LINE AND TORQUE APART FROM THE POWER SUPPLY CABLE If M they are too close together the current from the power supply cable can cause interference with the data being sent back and forth between the PowerC ontrol and the computer and this can cause interruptions in the test program This causes the brake to suddenly cut out for a few seconds which can seriously affect the results of the test I Runningthe ergometer To run the ergometer open up the
6. speed distance and time completed Your session will also be graphed on the bottom half of the screen with the power values shown in green axis on the left heartrate values shown in red red number on the right axis and cadence values shown in blue blue numbers on the right axis Total Time Sree 00 00 00 File Name n a Total Distance in Meters Power Watt NoBrake _ 0 000 5 y En 0 Cad 1 min 0 Heartrate 1 min Save Data gft Marker et 0 0 Speed km h W hen you re finished your session click on Save D ata and then close the O nline screen by clicking on the X in the top right corner If you want to look at your file later on you ll find it in the file database as if you had downloaded the file from your PowerControl Page 14 Part IX Using the Online O ption _ I Deleting training files W hile it s a good idea to keep your training session programs to use again in the future it s possible to end up with so many that you can never find the one that you re looking for If it s taken you two or three attempts to program in a session the way you want it go back and delete the ones that you re not going to use Here s how Go into the O ptions in the Online screen O pen up the file that you want to get rid of and then click on the Delete button That s it it s that quick so be sure you really want to be rid of the file before you clic
7. Different flywheel masses can be fitted to create the feel of riding uphill or on flat ground The resistance increases proportionally to the speed as it does on the road Resistance can be easily increased or decreased in the SRMW in Software while the session is running Please note that on the ergometer speed measurements are made based on the angular velocity of the flywheel which has only a vague relationship to speed on the road No significance should be attached to speed or distance measurements made with the ergometer Page 17 Part X SRM High Performance Ergometer y Setting up the ergometer The SRM High Performance Ergometer should be placed on a level floor near two or more electric sockets A PowerControl with the O nline option should be placed on the handlebar clip and connected to the sensor cable running from the ergometer The ergometer should be connected to the Power Supply which should then be plugged in but not turned on If the Torque option is going to be used connect the torque cable from the appropriate plug in the back of the PowerC ontrol to the parallel port of the data collection computer Plug the O nline cable into the O nline plug on the back of the PowerControl as well as into the appropriate Serial or USB port on the computer that is going to run the SRMW in software Once all of the cables are connected turn on the Power Supply with the switch on it s front The small light should turn or
8. SRMW in Software and click on the Online icon Please refer to the Online O ption section of this manual for full instructions on how to use this feature In this section we ll cover the options that are only available to ergometer users i e those that concern the control ofthe ergometer brake and the isokinetic mode You can operate the ergometer in three different modes as previously mentioned The first one O pen End Mode is excellent for warm ups fine tuning the bike position and for maximal sprint efforts For instructions on how to use O pen End Mode please see page 106 Predefined File Mode allows you to program a test or training session For detailed instructions on this please see pages 102 105 If you program a predefined file based on power you are using Hyperbolic mode If you program a file based on cadence you are using Isokinetic mode Isokinetic mode can be operated in two ways 1 The actual cadence is kept constant regardless of the gear selection true isokinetic WV mode or variable mode 2 The angular velocity of the brake is kept constant but the cadence can be changed if the gear selected is changed fixed mode To operate in true isokinetic mode go into the O ptions screen from the main O nline screen in the SRMW in software Then click on the Extra tab Select Variable from the G earing Isokinetic Mode section Click Apply and then
9. You can enter a description of the session in the Commentary field beneath it so that when you ve entered lots of files you can tell which one does what Make the descriptions as clear as possible such as 4mins 300W 1 min rest x3 rather than interval session Now you can enter your session Y ou Il notice that only one line for putting in your session appears automatically put your cursor in the Time field and right click with your mouse N ew Zone and Delete Zone will appear Click on N ew zone and a second line will come up below the first line Keep right clicking and selecting new zone for as many lines as you need for your whole session Options Mode MainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence Start Button no Cadence C End Button Cancel Ergometer Mode Training File Predefined File selected File I Example Session Open End Test Commentary 4mins 300 1 min restx 3 Demo Mode Open Create Delete Time Heartrate Cadence Total Time 4 00 veir ver 0 00 poole dm dar of New Zone Delete Zone Then you can put in whatever you want for your session For this example I ve done a short interval session with three blocks of 4 minutes at 300W with one minute s rest in between Because the target variable is power I ve put a check in the box next to Power for each line an
10. ange briefly and then turn green and remain green Bike fitting The best way to ensure a close match between a cyclist s position on their own bike and on the ergometer is to measure all of the dimensions in the vertical and horizontal planes Measurements can t be taken from the ground up because the ergometer sits higher than a bicycle 120mm Handlebar reach mm ji Handlebar drop mm Saddle height mm H Saddle sethack mm The ergometer seat and handlebars can be adjusted up and down as well as forwards and backwards giving total flexibility in bike setup All of these adjustments can be made by loosening the appropriate quick release bolts sliding the post into the desired position and then retightening the bolt Rulers are attached to each of the adjustable parts to allow an absolute measure of the position of each If these measurements are recorded ergometer setup for any repeat visits by that athlete is extremely fast Pedals can be changed allowing a rider to use their own pedals for their session Either an allen key usually 8mm or a pedal wrench is needed for this Pedals are loosened by turning the bolt towards the back of the bike or ergometer Page 18 Part X SRM High Performance Ergometer Multilength C ranks The multilength cranks allow quick and easy adjustments to be made to crank length in 2 5mm increments from 160mm to 190mm If the crank is pushed all of the way in it is 150mm long W hi
11. asurement What does it do The ergometer can do three basic things which can be tailored and modified to create an infinite number of tests or training sessions These are 1 Hold a cyclist s power to a programmed level Constant power or hyperbolic mode 2 Hold a cyclist s cadence to a programmed level C onstant cadence or isokinetic mode 3 Allow a cyclist to ride freely while providing minimal braking to mimic rolling resistance O pen ended mode Tests can be programmed on a second by second basis if needed providing rapid response for high intensity interval sessions or tests Page 16 Part X SRM High Performance Ergometer MT ZA How does it work The heart ofthe SRM High Performance Ergometer isthe eddy current brake which provides resistance by creating an electromagnetic field through which a metal disk runs The resistance of the brake is a function of it s angular velocity and the current supplied to it This system is controlled directly by the SRMW in Software and is connected to both the PowerC ontrol and the computer allowing constant fine adjustments to braking force to be made based on actual power and cadence measurements In constant power or hyperbolic mode the desired power output is specified by the user in the SRMW in Software W hile the cyclist pedals power is measured by the PowerMeter and is fed back to a controller The resistance of the brake is controlled to ensure that the d
12. d earlier go into the Online screen and click on O ptions Select Predefined File and then click on Open Options Mode MainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence C Start Button no Cadence End Button Ergometer Mode Training File Predefined File selected File C Open End Test ze Commentary Time Heartrate Cadence Total Time 1 oor E oS oF ook You ll then be given a choice of files to open from the ErgoFiles folder Click on the one you want to use and then click on O pen Click on Apply in the O ptions screen to open the file for use Open Training File Look in ErgoFiles File name Example Session erg y Files of type Training Files X Cancel IV Open as read only Page 13 Part IX Using the Online Option Usingthe Online screen for real time feedback You don t necessarily have to program in a session to use the Online option If you select O pen End Test inthe Mode options you can simply watch what you re doing as you go ainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence Start Button no Cadence End Button Ergometer Mode C Predefined File f Open End Test C Demo Mode In this view your real time data will be shown on the top half of the screen including power heartrate cadence
13. d entered the power to aim for in W atts You could program a session where you work to heartrate or cadence as well Put the time you want for each part of the session in each line and double check that you ve entered what you intended to by checking in the Total Time box it should add up to how long you want the session to be Page 11 Part IX Using the Online Option o Here s what the finished session program looks like Once you re done entering your session click on the Apply button Mode MainChart Predefined File Demo Mode Extra Start Test by top Test by 6 Cadence Start Button no Cadence End Button Ergometer Mode Training File Predefined File selected File Example Session Open End Test Commentary mins 300w 1 min restx 3 Demo Mode Open Create Delete Time 1 400557 2 mer 3 ser 4 10083 5 ser S ser W hen you click on Apply your session is saved and the software will bring up the O nline screen with your session open as shown below You can see the planned session power targets on the bottom of the screen shaded grey and the first target power in the top left hand corner in green It also tells you how long to go until the next step O nce you start pedalling or hit the start button whichever you chose in the settings your actual power heartrate cadence and speed will be shown as well as y
14. esired power is maintained by the rider To get the best results in this mode the rider should be encouraged to hold a steady cadence since the feedback loop is based on actual measured power This means that if the cadence drops the power will auto matically increase and vice versa leading to a battle between the ergo controller and the rider if their cadence varies widely The rider can choose to ride at whatever cadence they prefer and can make changes to this as long as the changes are relatively smooth and gradual The brake controller has been carefully tuned so that changes in demanded power are implemented smoothly and quickly but most users require some time to become accustomed to riding in this mode The isokinetic mode can be used to determine high or low cadence strength endurance optimum cadence for maximum power or maximum aerobic power In this mode the angular velocity of the brake is controlled with a very high bandwidth so that the pedalling speed remains exactly constant regardless of the position of the cranks or the power produced by the cyclist It allows the rider to pedal below the desired cadence but not above it so they can accelerate and then produce their maximum power against the resistance provided by the brake at the desired cadence O pen ended mode can be used for warm ups or for maximum sprint power tests It allows the rider to pedal freely with enough braking power to mimic the feel of riding on the road
15. k Options Mode MainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence C Start Button no Cadence End Button Cancel Training File Predefined File selected File Open End Test Einer Demo Mode Open Create Time Heartrate Cadence Total Time 1 000531 or or 0 00 Using the Online option versus the SRM ergometer If you are a coach or physiologist who uses this program regularly to run tests on cyclists or other athletes we would recommend that you consider using an SRM ergometer instead of a turbo The ergometer gives the software control over the brake helping the riders achieve exactly what you set them and also allows you to conduct isokinetic tests or training sessions Please see the section on the ergometer for more information The Online option is great because it s a much more portable solution for setting and monitoring sessions Turbo trainers bikes and laptops can go pretty much anywhere while the ergometer well it CAN go pretty much anywhere but you won t enjoy the journey If you have a facility that you use regularly and that your riders can access easily the ergometer is the better choice because it gives you that added level of control over the session If you re not sure which option is best for you please get in touch with us and we ll help you work it out Page 15 Part X SRM High Performance Ergomete
16. le these cranks are extremely strong the adjustments are very fine and if they are done incorrectly the crank will be damaged 5mm allen key fixing spring To change the length of the crank undo the two 5mm allen key bolts at least one full turn remember lefty loosey righty tighty it s silly but it works DO NOT UNDO THE FIXING SPRING SCREW as this is what clicks into each of the indentations every 2 5mm Slide the crank along feeling it click past every 2 5mm until it reaches the length you want Make sure the fixing screw is in the centre of the indentation you should feel and hear it click into place If it hasn t and you tighten the allen key bolts you will add a new hole where the fixing screw meets the steel and it will make it more difficult in the future to find the accurate length The length is marked out on the steel part of the crank by lines every 10mm starting at 160mm with indentations between lines marking out each 2 5mm So if you wanted a crank length of 165 for instance you would start at the first line which indicates 160mm and then move two dots along towards the 170mm line first dot 162 5mm second dot 165mm MAKE SURE THE CRAN KS ARE SET THE SAME ON BOTH SIDES To tighten the cranks back up once you ve made the adjustments tighten both allen bolts by about 15N m so that they don t loosen during cycling Don t overtighten them however as you may find that you can t get them undone again
17. m the power required is about 50W It is not possible to regulate below this value Ergo flymasses duplicating the kinetic energy of cycling W hen riding outdoors a cyclist applies force against a resistive torque on the crankset The resistive torque is caused by contact and wind resistance and by increases in altitude all of these work to slow the bicycle The amount by which the bike slows between the application of force on each pedal depends on the exact the wind conditions speed and terrain At slow speeds and when climbing hills the cyclist has little kinetic energy and the cadence varies significantly over a complete pedal revolution At high speeds the rider and bicycle have more kinetic energy the resistive torque and cadence are more constant at every crank angle These two situation feel very different to the rider To duplicate the feel of riding in both conditions the ergometer gearbox can be operated with different flymasses a large one a small one both or neither To change flymasses remove the gearbox cover from the left hand side of the ergometer and undo the brass knurled nut The nut should be hand tightened afterwards The kinetic energy of the gearbox depends on both the speed and the number of masses By changing masses and shifting gears in the internal hub it is possible to operate with a wide range of kinetic energy at any cadence Page 23 Part X SRM High Performance Ergometer CC The follo
18. o finish up and move on Come to a complete stop and count to three For instance before taking a hammer to your PowerMeter to try to remove a stubborn crank arm N ot alarm bells but enough to give you pause we hope OY ri Some people really want to know how things work and they should look out for x these icons Some people really don t want to know so they can look out for these so they can skip quickly onward kh Page 6 Part IX Using the Online O ption Have you ever clicked on the icon in the SRMW in software that looks like a little ergometer It takes you to ascreen that looks like this onm Total Time Control by Power 5 File Name 00 00 00 n a Total Distance in Meters Power Watt NoBrake _ 0 000 5 3 reizen 0 Cad 1 min a o rain Once you plug your online PowerC ontrol this type of PowerControl has two ports on the back and needs to be ordered specially into your computer this screen will show you real time data from your SRM system while you ride N ot only that but you can program your planned session into the software beforehand and have it guide you through The online program has no way of controlling the brake on your indoor trainer so it can t force you to do the power cadence or heartrate that you re aiming for but it can tell you what your target is at that time i e 300W how much longer until yo ur next step in the session and what
19. of Interest Yes we know this manual is awfully thick N ot very many of you are going to read the whole thing cover to cover so we ve flagged up interesting or important parts with icons in the margin to help you skip straight to the parts you want Here are the most common ones along with what they mean There are lots of others throughout the manual but mostly they re just there to brighten things up Y These keys point the way to bits of information that are important for making things work the way you want them to but that aren t life or death kinds of things A This manual doesn t just cover HOW to do stuff it covers W HY you would want to do it as well Any ideas are pointed out by lightbulbs skip to these if you re on the hunt for help with interpretation Anything terribly important is pointed out by alarm bells It s our way of shouting DONT SKIP THIS BIT OR HORRIBLE THIN GS W ILL HAPPEN O k maybe not that horrible in the grand scheme of things but important anyhow Honestly WV Explanations of anything somewhat puzzling get this icon Settings interpretation of some of the software features anything that might make you say Aha That s what that means Learn about how SRMs can help you meet your goals by following the targets Some of the instructions are well fairly long But with lots of pictures so don t worry These thumbs up icons point to the end of the section when you get t
20. our total time completed The centre panel tells you that you re working to a Predefined File with the target variable being power as well as the File N ame here it s the same Example Session that entered earlier Next Step fa Set Marker E Part IX Using the Online Option Once you start the session you can skip to the next step the next line that you programmed in by clicking on the next step button Similarly you can go back and repeat the previous step by clicking on the prev step button If at any point you decide you want to restart the session click on the Restart button You can add a marker manually at any time by clicking on the Add marker button and you can save the file by clicking on the Save file button If you want to quit the session and go do something else click on Exit If you re in the middle of your session and you decide that a given step is too easy or too hard you can adjust the target variable to a new level by using the up and down arrow button next to it For instance in the example session you could increase the 300W target to 315W by clicking on the up arrow next to Power If you had a session that was set to heartrate or cadence you could use the arrows next to those variables That way you don t have to stop your session to go reprogram everything Opening an existing training file If you want to run a session that you ve entere
21. r Why is it better than other ergometers The SRM ergometer was designed for use with cyclists and was developed in cooperation with the German Cycling Federation Peter Keen from the British Cycling Federation and Dr W olfgang Stockhausen from the University Hospital Freiburg It allows the same measurement tool to be used in the laboratory as is used in the field providing excellent validity It is accurate reliable and is built to withstand the high resistive torques generated by the world s most powerful cyclists It is adjustable to match any cyclist s bike position from sprint positions to triathlon positions It feels as much like riding a bike as possible because standard bicycle parts are used such as handlebars saddles and cranks The ergometer comes with a series of different flywheels in order to provide a variety of kinetic energy profiles so you can replicate the feel of riding uphill or on flat ground The software combined with the mechanical design of the braking system provides incredible flexibility for designing test protocols It can run true isokinetic tests as well as ramp tests Conconi tests even low cadence strength endurance interval sessions Specific tests can be designed for any type of cyclist from BMX to road to track sprint W ith the SRM Science PowerMeter the accuracy of the ergometer power reading is 0 5 The SRM Training System is accepted as the Gold Standard for power me
22. r maintenance The key to long ergometer life is cleanliness Human sweat is a very corrosive substance that will damage the drivetrain gearbox and frame if left on the ergometer This means that THE ERGOMETER SHOULD BE WIPED CLEAN AFTER EVERY USE to ensure that all sweat is removed your lab will smell better as well Periodically the covers should be removed and the gearbox area thoroughly cleaned with warm soapy water The chain should be cleaned and kept well oiled so that the drivetrain components will only need very infrequent replacement Handlebar tape should be removed and replaced periodically Follow the guidelines in the appropriate sections of this manual for Powercontrol and Powermeter maintenance and battery replacement Page 25 Part X Troubleshooting ee The ergometer makes a grinding noise whenever someone pedals This usually indicates that the bottom bracket is worn out and needs to be replaced Be sure to replace it with exactly the same bracket that it came with and be careful when fitting the new one to make sure that it is threaded correctly There is a regular clunking sound whenever someone pedals Check that the two allen key bolts are tight on both of the adjustable cranks If this doesn t solve the problem check that the cranks are mounted properly onto the bottom bracket and that you can t wiggle them at all If you still hear a sound when someone pedals remove the ergometer covers to check that no
23. rder to maintain the desired rotational speed At a cadence of 120 rpm the magnetic field in the brake has to be precisely set and removed four times per second The power supply is specified to operate on either 220V or 110V 1 6A fuses are incorporated into the VV supply The power point which is used for the power supply has to be well earthed grounded in order to M avoid electrostatic charging of the athlete WARNING OPERATION OF THE ERGO THROUGH AN POORLY GROUNDED POWER RECEPTACLE COULD BE DANGEROUS TO THE y HEALTH OF THE ATHLETE AND OPERATOR AND CAN ALSO LEAD TO INCORRECT ECG READINGS The operating mode of the power supply is indicated by a green LED display The yellow LED display indicates the operation of the brake The yellow LED should blink on and off during isokinetic mo de Place the power supply in dry well aired condition in a place where it cannot be contaminated with sweat Avoid switching the power supply on and off in rapid succession N ever clean the power supply with water or other fluids the electronics will be damaged Use a dry cloth The current transmitted to the brake is 24 V and the power supply also provides charge to the Powercontrol Ifthe Powercontrol is not charged over a period of about 3 months it may lose the programmed operating parameters slope and zero In this case charge the PC using the dedicated charger and enter all operating parameters again with the SRMW in software Ergomete
24. thing is hitting them Be sure that the ergometer is placed on a level surface The ergometer PowerC ontrol has died Try recharging it with a regular SRM charger for an hour or more If this works check that all of the operating settings are still correct such as the slope and wheel circumference Reset the zero offset before running any tests If recharging it doesn t work send the PowerControl to one of our service centres for a new battery The speed is wrong For the ergometer the wheel circumference needs to be set to 1000mm Check that this setting is correct and that you are working in your preferred units metric or imperial Please be aware that the speed is calculated from the angular velocity of the flymass which has only a vague relationship to speed on the road No significance should be attached to speed or distance measurements made with the ergometer Page 26 Page 27
25. utes of it at any given time Then you can choose what range of values you d like to see for your power heartrate cadence and speed as well as if you want them visible at all Predefined File Demo Mode Extra Time Scale Show allways entire Test Cancel Show only the last minutes Power watt V Visible From To 40033 Distance Heartrate bpm M Visible From To 20033 Distance Cadence rpm V Wisible From To 200 Distance Speed km h I Visible In the Predefined File options you can chose whether or not to have the software add markers into your file or not as well as what to do when you click on next step or previous step while you re running a session You can have it skip to the next previous step that you ve programmed or have it skip to the next previous step that the software has marked Options Mode MainChart emo Mode Extra Automatic Markers ce ie on Cancel What to do with next prev Button goto next prev Step goto next prev marked Step Ignore the Demo Mode tab since you need an ergo to run the demo mode and go to the Extra options tab Page 9 Part IX Using the Online Option In the Extra options you can select whether or not you d like your data to be saved automatically at the end of your session If you would select Save Data on Remember the data will still be in
26. will remain at it s current set point Stop Ergo Click here to stop the flymass This feature is only enabled when no cadence is detected Next or Previous step Skip ahead or back in the training schedule Power Watt gt B O Heartrate 1 min Open End Total Time Control by Power Restart Save Data Set Marker File Name 00 00 00 n a Total Distance in Meters 0 000 0 Cad 1 min 0 0 Speed km h Stop Ergo Page 21 Part X SRM High Performance Ergometer W hile the ergometer is running a file it is possible to increase or decrease the power or cadence that the program is holding the rider to Simply click on the up or down arrows next to the programmed power or cadence Fi SRM Online Das Total Time Control by Power 00 00 00 File Name i n a Total Distance in Meters No Brake O 000 Restart Prev Step Next Step 0 C qa 1 min Save Data Set Marker 10 Stop Ergo Exit 0 0 Sp 280 km h Demonstration Mode This mode is normally only used for demonstrations at open houses trade shows or exhibitions Enter the time for atest and the method of ranking subjects by how steadily the power is maintained by the maximum power generated or by the maximum distance travelled during a test Options Mode MainChart Extra C Max Distance Cancel Time Tolerance Page 22 Part X SRM High Performance Ergometer MT
27. wing chart shows the approximate kinetic energy in Joules of a rider with bike at various speeds In order to work out which flymasses and gears to use in order to replicate the kinetic energy in the table above if your ergometer has a Shimano N exus hub use the table below For example if you had a rider who weighed 75kg together with his bike and you wanted to set the Y ergometer up so that they would have the same feeling as riding on the road at 60km h you would look at ha the first table to see what their kinetic energy would be In this case it would be 10417 Then you would look at the second table along the 60 km h row until you saw a number that was similar In this example 10330 would be created if you put both flymasses on the ergometer set it to gear 7 and had the rider a dd pedal at approximately 104rpm A kinetic energy calculator for ergometers equipped with a Rohloff hub will be posted on www srm de Page 24 Part X SRM High Performance Ergometer MT I Power supply The power supply was developed by SRM particularly for use with the Ergo The power supply changes the magnetic field in the eddy current brake very rapidly to ensure a constant rotational speed in isokinetic mode In the isokinetic mode it is necessary to reduce the braking power to near zero when the cranks are in vertical position W hen the cranks are in the horizontal position the required braking power may reach 4000 watts in o
28. you ve done so far You ll need to adjust the resistance on your turbo trainer to achieve your targets Y our actual training session will be plotted as coloured lines on top of the grey shaded targets W e recommend the online option for people who do a lot of specific turbo sessions as part of their training It s a great way to make sure that you re meeting your goals for each session So how do you actually use it How to use the Online option First of all make sure you have an online PowerControl This has two ports in the back one for the sensor cable from your bike to plug into and one for the download cable so that you can connect the PowerControl to your computer If you don t have one of these you ll need to order one Then you ll need to set your bike up on an indoor trainer next to your computer If you need a longer download cable so that you can do this you can order one of these from us as well Make sure both your bike and your computer are secure and that you can see the computer screen Page 7 Part IX Using the Online O ption Now you ll need to fill in some preferences in the software O pen up the SRMW in software and then click on the Online icon it looks like a little ergometer Then click on O ptions in the top left hand corner o Total Time Control by Power E a File Name 00 00 00 na Total Distance in Meters Power Watt NoBrake _ 0 000 Restart 5 El Prev Step
29. your PowerControl if you decide you want to save it later The rest of the options on this screen only apply to ergometers Options Mode MainChart Predefined File Demo Mod Gearing Isocinetic Mode AtTestend Variable Save Data C Fixed 53 E off on Stop Ergo Button off C on on at Testend Horse Mode off Con Click on Apply to make sure that all of your choices are saved Entering a new training session or test Now that you ve got all of the settings the way you want them you can program your session Go back to the Mode tab and select Predefined File More options will appear on the screen as shown below Click on the Create button Options Mode MainChart Predefined File Demo Mode Extra Start Test by Stop Test by Cadence C Start Button no Cadence End Button Cancel Training File selected File C Open End Test Commentary Heartrate Cadence Total Time ari oft J 000 Page 10 Part IX Using the Online O ption The Create N ew Training File dialogue box will appear where you can give your file a name Here I ve called it Example Session Click on Save to move to the next step Create new Training File Save in ErgoFiles v 4 c EA File name Example Session v Save as type Training Files Cancel The file name that you entered now appears in the selected file field
Download Pdf Manuals
Related Search