16"+ Speed sensor on Bafang 750 BBS02 = top speed

[karlInSanDiego]

I'm fitting a 750W Middrive on the front boom of a recumbent tadpole trike. The trike in question is a 2002 GreenSpeed GLR with 16" wheels in front and a 20" wheel in rear (not my trike but good pics here: https://laidback.me/greenspeed-glr/ ). Given that the simple speed hack of calling a 26" wheel a 20" in the programming won't help with my c961 display on this small wheeled trike, I am trying to find out more info about various displays and their ability to override the 50 kph that my current setup will enforce. I'd also like to set the speed sensor on my front wheel, as purchasing 48" of extensions to get it to the rear stay, or splicing 48" into my speed sensor wire isn't optimal for the mild increase in diameter. My target cruising speed is 37 mph with medium sustainable pedaling. On my upright MTB with this motor and tall gearing, I managed 30mph. I chose the extreme recumbent bike to help enable high cruising speeds, and allow for use as a light cargo trike when needed. It has a 20 degree seat angle and was originally designed as a race trike.

I read that the DPC-14 (and I think the DPC-18) allow you to set max speed without a programming cable (I have cable) and that it's much higher (99 kph). This should be possible, while still giving an honest setting for a front 16" wheel pickup. I think the Eggrider V2 may allow this too. Don't want to invest in these strategies if it's unnecessary and I can override with software hack and my current equipment. Already way overbudget on this build so any suggestions you can give about cheapest and or cleanest solution would be much appreciated. Are there other displays like the C500 that might be cheaper that can do this? Am I right in understanding these displays allow the override of max speed? Thanks for any advice you can offer.

-kARL

 

[karlInSanDiego]

looks like the 500C can do override 50kph limit too (and us 99 kph top speed), and is cheaper, but maybe lacks much of the tunability of the Eggrider. Any thoughts on these various displays?

I had thought the display had little to nothing to do with the controller settings. But even it allows setting of wheel size, which writes back to the controller. It looks like subsequent generation of displays took more responsibility of allowing tuning of the controller in a way even the programming cable couldn't?

 

[karlInSanDiego]

Maybe I'm misunderstanding how far the software/programming cable has come. Is there better software than Bafang Configuration Tool V2 to use that'll easily unlock the 40kph limit?

 

[karlInSanDiego]

Answering my own question here. The Eggrider will override an old BBS02 controller's speed limiter.