agilehumor
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- Thread starter agilehumor
- Start date
r3volved
100 kW
Wouldn't you just be comparing your post-ride results between your Garmin and your cycle analyst (or alt. ebike display)?
The garmin should be tracking all human effort and no bike power...ebike display would be tracking all bike power no human power.
Total power used = garmin + bike?
The garmin should be tracking all human effort and no bike power...ebike display would be tracking all bike power no human power.
Total power used = garmin + bike?
agilehumor
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r3volved
100 kW
http://m.ebay.com/itm/272061542420
One of these + generic cycle speedo will pretty much give you the majority of info that the CA does - accumulated AH and live reading V/W. Just can't save anything...every bike start is a reset. The CA also has other benefits and integrated controls.
It just sounds like you are trying to compare your expended watts vs the bike's expended watts.
One of these + generic cycle speedo will pretty much give you the majority of info that the CA does - accumulated AH and live reading V/W. Just can't save anything...every bike start is a reset. The CA also has other benefits and integrated controls.
It just sounds like you are trying to compare your expended watts vs the bike's expended watts.
agilehumor
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The CA V3 measures human watts using crank rpm and a torque sensor giving totals for HWhrs, AvgHW, and AvgRPM. There's a little HW bargraph on the main screen. This stuff and the usual bike info are sent out the serial port where the data steam can be logged using an Analogger or a phone with a USB port. If you log the CA data with an Analogger, it will tag the data stream with GPS data. So - for a usual PAS bicycle setup w/torque sensor, the CA already logs motor and human power output. The ebikes.ca Trip Analyzer plots all this CA data with maps and stuff.
Since the CA can be used with any controller, your challenge would be the torque measurement, but a BeamTS could be used with a custom mount. An issue would be that all the friction losses of the elliptical pedal thingies would not be reflected in the torque/rpm calculations, but the significance of that error vs the other data is another matter.
In any case, all CAs log the bike data so if you can get a time-based data log from your Garmin, you can play it against a CA log and examine the results ex post facto.
Not the level of integration you seek, but doable with a bit of effort...
Since the CA can be used with any controller, your challenge would be the torque measurement, but a BeamTS could be used with a custom mount. An issue would be that all the friction losses of the elliptical pedal thingies would not be reflected in the torque/rpm calculations, but the significance of that error vs the other data is another matter.
In any case, all CAs log the bike data so if you can get a time-based data log from your Garmin, you can play it against a CA log and examine the results ex post facto.
Not the level of integration you seek, but doable with a bit of effort...
agilehumor
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This generation of CA simply lacks the hardware, but this is an opportunity for an ambitious individual to program a little dongle that plugs into the present CA V3, strips the data of interest from the log record stream (CSV format) and xmits it to the Garmin. 5V can be mooched off the CA from the throttle or AuxPot connectors. One of the many tiny micro boards (Arduino) and an ANT+ transceiver PCB should to the job. A minute Googling shows similar projects including an Instructable for monitoring an exercise bike.agilehumor said:
