The HPV to be 'electified' is a DIY velomobile intended for long distance travel.
I want a relatively low-power (about 150watts) efficient mid-drive that will integrate into transmission exactly like e-assist of Tetz:
http://www.recumbents.com/mars/tetz/E-Assist.htm
I've bought this motor spindle with integrated 10:1 gearbox:
https://www.aliexpress.com/item/32797544178.html
Paired with 13T cog on the spindle and 50T chainwheel it will pull my legs with around 100 RPM - my preferred cadence (because short cranks). I like this not just due to weight, but because it seems to emulate a fixed gear bike that actively helps you pull though dead spots, optimizing biomechanics and w/o hassle of ACTUAL fixed gear bike (like having no gears and having to pedal ALL the time, even steep downhill).
It will be combined with a hefty 24v (7s) battery.
I'll be needing an inobtrusive setup with thumb throttle and, most importantly cruise function - cause I'll likely be using it for hours and hundreds of miles (conservative CFD estimates of my shell suggests about 50 kmh on a combined 300 watts).
What kind of controller should I use? Using ESC like on Tetz trike w/o a current limiter is tricky, plus I like ability to use e-bike brake handles to stop assist in an instant.
As I understand, KT controllers with LCD should work - but would they, given 'unorthodox' nature of my drive? For instance, it will likely give out wildly incorrect speed due to two step reduction, and PAS is obviously out of the question.
I want a relatively low-power (about 150watts) efficient mid-drive that will integrate into transmission exactly like e-assist of Tetz:
http://www.recumbents.com/mars/tetz/E-Assist.htm
I've bought this motor spindle with integrated 10:1 gearbox:
https://www.aliexpress.com/item/32797544178.html
Paired with 13T cog on the spindle and 50T chainwheel it will pull my legs with around 100 RPM - my preferred cadence (because short cranks). I like this not just due to weight, but because it seems to emulate a fixed gear bike that actively helps you pull though dead spots, optimizing biomechanics and w/o hassle of ACTUAL fixed gear bike (like having no gears and having to pedal ALL the time, even steep downhill).
It will be combined with a hefty 24v (7s) battery.
I'll be needing an inobtrusive setup with thumb throttle and, most importantly cruise function - cause I'll likely be using it for hours and hundreds of miles (conservative CFD estimates of my shell suggests about 50 kmh on a combined 300 watts).
What kind of controller should I use? Using ESC like on Tetz trike w/o a current limiter is tricky, plus I like ability to use e-bike brake handles to stop assist in an instant.
As I understand, KT controllers with LCD should work - but would they, given 'unorthodox' nature of my drive? For instance, it will likely give out wildly incorrect speed due to two step reduction, and PAS is obviously out of the question.