shifting down under strain on Prodigy

[michu73]

hi. Living in the northern California hills riding my very new Prodigy (magnificent beast!) -- I've discovered that the motor temporarily CUTS OUT when I try to shift down under duress, such as a hill. This is my fourth ebike in as many years that I've been riding in the hills, but THIS one cuts out the pedal assist for a few seconds when I downshift on a hill. Hmmmm. This bike is perfection itself except for this one issue. I used to race in my ill-spent youth, so I know about chains breaking under duress. However, you would think Ride1Up would allow me to make up my own mind about negotating a hill.
SO, is there a way to disable this cut-out?
Thanks!
M.

 

[Jimmy666]

hi. Living in the northern California hills riding my very new Prodigy (magnificent beast!) -- I've discovered that the motor temporarily CUTS OUT when I try to shift down under duress, such as a hill. This is my fourth ebike in as many years that I've been riding in the hills, but THIS one cuts out the pedal assist for a few seconds when I downshift on a hill. Hmmmm. This bike is perfection itself except for this one issue. I used to race in my ill-spent youth, so I know about chains breaking under duress. However, you would think Ride1Up would allow me to make up my own mind about negotating a hill.
SO, is there a way to disable this cut-out?
Thanks!
M.

The bike has a gear shift sensor that cuts power when shifting up or down, I am sure that you could disconnect it pretty easy. It is located nest to the derailer.

 

[AHicks]

I have a Bafang Ultra powered bike with that same function (shift sensor). I generally don't even notice it's there, but at low speeds and low cadence levels, if I need to downshift RIGHT NOW for something that's come up unexpectedly, there's a good chance I'm going to stall the bike due to the delay. So instead of even trying to downshift, I bump up the PAS level a couple steps. I'm usually riding in PAS 1, so bumping up into 2 or 3 gives me all the extra power that I generally need without hurting a thing (right now) - without the threat of stalling due to the delay. Point being, the Ultra is a torque monster, but the same trick on this bike may work out well for you as well many times. It might be worth a try. It's not something that happens to me very often, but it's a tool in my arsenal..... -Al

 

[teskow]

I too have a Prodigy. Mine does cut power when shifting but only for a split second. It is nearly undetectable.

 

[ChezCheese:)]

But isn't one always supposed to let up a bit when shifting? That's the way I learned to use a derailleur way back when. So I always try to anticipate what gear to be in before I need it.

 

[teskow]

Letting up when shifting just makes sense to ease the strain on the system. A torque system can keep power on just a bit when one lets up peddle pressure so as to not have an on and off feel if peddle pressure is interrupted momentarily. That could be annoying as he##. I have found for instant power cut off the best is to apply the brake as most have a motor power cut off in them. A shift sensor should do the same when shifting but you still need to ease up peddle pressure to not crunch the drive system..

 

[AHicks]

This isn't about the pause you generally take when shifting, it's about the electronic delay turning the power back on. It's not something you notice much normally, or maybe I should say I don't notice it much, unless you get into the scenario where the bike is barely moving, on the brink of stopping, then you shut off the power for a second (the switch shuts the power off for a second when shifted). If you're on grass, that's going to stop the bike in it's tracks..... As mentioned, the issue I have, is with low cadence and low speed.

 

[GenXrider]

Letting up when shifting just makes sense to ease the strain on the system. A torque system can keep power on just a bit when one lets up peddle pressure so as to not have an on and off feel if peddle pressure is interrupted momentarily. That could be annoying as he##. I have found for instant power cut off the best is to apply the brake as most have a motor power cut off in them. A shift sensor should do the same when shifting but you still need to ease up peddle pressure to not crunch the drive system..

I think that's 3 "peddle" pressures. lol