pickworthi
100 W
I am considering chaining my "Mk1" ebike conversion, and am looking at Cycle Analyst V3 (plus a matched controller) as an option. However, I like the way my current PAS works, and would like to keep it that way after conversion.
My current controller (from a Dillenger UK Street Legal kit) appears to operate on a target speed approach. You can select a level of Pedal Assist (1-9), and this seems to set a target speed based on your max speed preset. Thus, if I select assist level 6, that seems to imply around 16.5mph power cut off with a full battery for me, dropping to around 15mph when battery is close to depleted.
When the gradient kicks up, the bike speed drops, and the power provided by the controller goes up, until it reaches the maximum available (inside the controller 15A max current limit). I am measuring this with a logging gizmo I built, and have plugged in between the battery and the controller.
This works well round here, where there are many sharp ascents that require (for me) full power assist available, and then just enough power to maintain around 15mph when things get easier.
Looking at the documentation for the Cycle Analyst:
https://www.ebikes.ca/pub/media/downloadable/documents/CycleAnalyst_V31_Web.pdf
It says that it offers three modes of PAS:
1) Basic (Pwr): In this mode, the CA3 attempts to produce a constant power
output in watts when pedaling is detected
2) Basic (ThO): This is a somewhat different approach to PAS where the
CA3's throttle output voltage is held constant
3) Torque: This mode is only available if a torque sensor is configured in the
PAS device setup.
I have discounted option 3 since I do not want (or have) a torque sensor.
By my reading, options 1 or 2 do not provide what I currently have. It appears that with the Cycle Analyst, if I want the power to increase as my speed reduces, I would have to use an Auxiliary switch to change the setting. This is really not a pleasant option to live with, compared to what I currently have.
Of course, the documentation does not describe the behaviour of option 2 when the speed drops below that implied by the fixed throttle setting.
What I am hoping is that someone on this forum has got a Cycle Analyst, and experiences the same sort of PAS as I do - in which case some reassurance that it will still be possible should I get a Cycle Analyst would be appreciated.
Many thanks.
(PS - I live in the UK, and don't break the law - so I adhere to UK e-bike regulations.)
My current controller (from a Dillenger UK Street Legal kit) appears to operate on a target speed approach. You can select a level of Pedal Assist (1-9), and this seems to set a target speed based on your max speed preset. Thus, if I select assist level 6, that seems to imply around 16.5mph power cut off with a full battery for me, dropping to around 15mph when battery is close to depleted.
When the gradient kicks up, the bike speed drops, and the power provided by the controller goes up, until it reaches the maximum available (inside the controller 15A max current limit). I am measuring this with a logging gizmo I built, and have plugged in between the battery and the controller.
This works well round here, where there are many sharp ascents that require (for me) full power assist available, and then just enough power to maintain around 15mph when things get easier.
Looking at the documentation for the Cycle Analyst:
https://www.ebikes.ca/pub/media/downloadable/documents/CycleAnalyst_V31_Web.pdf
It says that it offers three modes of PAS:
1) Basic (Pwr): In this mode, the CA3 attempts to produce a constant power
output in watts when pedaling is detected
2) Basic (ThO): This is a somewhat different approach to PAS where the
CA3's throttle output voltage is held constant
3) Torque: This mode is only available if a torque sensor is configured in the
PAS device setup.
I have discounted option 3 since I do not want (or have) a torque sensor.
By my reading, options 1 or 2 do not provide what I currently have. It appears that with the Cycle Analyst, if I want the power to increase as my speed reduces, I would have to use an Auxiliary switch to change the setting. This is really not a pleasant option to live with, compared to what I currently have.
Of course, the documentation does not describe the behaviour of option 2 when the speed drops below that implied by the fixed throttle setting.
What I am hoping is that someone on this forum has got a Cycle Analyst, and experiences the same sort of PAS as I do - in which case some reassurance that it will still be possible should I get a Cycle Analyst would be appreciated.
Many thanks.
(PS - I live in the UK, and don't break the law - so I adhere to UK e-bike regulations.)