Lectric Trike2 750 throttle problem

[Tom521]

We just received two Lectric Trike2 750s. They seemed fine until we tried to ride them using the throttle to move from a dead stop.

The throttles on each bike turn about 10 degrees (or about 1/4") before anything at all happens. Then the trike suddenly lurches and lunges forward.

Is this normal? Lectric says "operating as designed."

We've had two other ebikes (both kinds from Rad); their throttles were smooth and predictable from zero speed on up. Moving away from a dead stop was always gentle and predictable.

Since Lectric says they designed the trikes to do this lunging behavior (not sure why?), I tried to return them for a refund because we're in our mid eighties and this could lead to tipping over if a turn was involved - or getting them out of the garage which could lead to a small crash - very undesirable events!

Having said this, is there another throttle or controller that could be swapped in to prevent this sudden onset behavior?

Tom

 

[CanNik]

You can't get a refund on something that is not faulty it isn't their fault you can't use them

 

[Tom521]

Faulty design is certainly something they can control. Other bikes/trikes do not exhibit this dangerous behavior.

 

[Jeremy McCreary]

Welcome aboard! Sounds like a bad throttle implementation — no shortage of those out there.

But there could also be a narrow band of lever positions with a more progressive response that you might have overlooked.

Happened to me on our first ebikes. I thought their thumb throttles were all or nothing, but wife said, nope, you just have to find the right spot with the lever. And she was right — just this once, mind you.
;^}

With practice, I could thereafter feather in as much or as little throttle as I wanted. The trick for fine control: Plant my thumb on the housing and just roll it into the lever. Easy to hold a steady boost that way. Soon became 2nd nature.

Good luck.

 

[Tom521]

Jeremy,

Sure sounds like something to try - thank you.

 

[stompandgo]

Your dealer may be able to get to a settings screen on the display. Things that can be adjusted are:

Throttle active only after pedaling
PAS sensitivity
Throttle active when already moving

Some combination of these kinds of settings should get rid of the lurching. Also start in PAS level 1 and switch up once underway. Level 1 usually isn't hard off the line.

 

[Tom521]

stompandgo,

Good list of things to look into. Alas, I'm in NE FL and there's no Lectric dealer nearby so I'll try as best I can to see if those settings will help.

Tom

 

[PCeBiker]

The throttles on each bike turn about 10 degrees (or about 1/4") before anything at all happens. Then the trike suddenly lurches and lunges forward.

Is this normal? Lectric says "operating as designed."

My first ebike did the same thing. I replaced the "Quick" thumb throttle with a twist throttle and it didn't help.
Then I replaced the display with an off-road display that allowed for more adjustments, and that didn't help either so I replaced the controller with a KT controller and display and that made a world of difference.

My new ebike is also a cadence sensing rear hub drive ebike with a half-twist throttle, but the throttle feels way better.

The throttle still has the ¼" dead spot at the beginning of the rotation, and another ¼" at the end, but I get no lurching.
The programming of the power delivery is Way Better than my first ebike.

You should be able to install a KT controller and display on your trikes, but it may get a bit involved.
There might be some proprietary stuff going on with your trike?

Lectric says "operating as designed." so there probably isn't going to be any programming you can do to "fix" something that Lectric doesn't consider broken.

Faulty design is certainly something they can control. Other bikes/trikes do not exhibit this dangerous behavior.

Shitty programming of the power delivery is a design fault as far as I see it, but they don't see it that way.

 

[Tom521]

PCeBiker,​

Thank you for another possibility for fixing this design flaw!

I did a preliminary internet search; it seems "interesting" to try to find a KT model number that will work specifically with the Lectric 750 trike2. Perhaps I'll be able to find a source for that if I keep looking...

Tom