Dual Thumb Throttle?

[Wheezer]

First Post. I just put together an ebike for my wife. Go-Hub (Crystalyte 408) with a Ping 36w20ah battery on a Specialized Hardrock. Being someone who bike commutes anyways, I was a little sceptical of this ebiking stuff, but I am blown away by how I enjoy this bike. I am now trying to justify an ebike for myself.

Anyways, my problem is this: Her bike has SRAM Grip Shifters and it is difficult to downshift and keep the thumb throttle depressed while riding uphill. (Also she complained that her thumb was *tired*.) The obvious solution is to add a second thumb throttle for the other hand. Has anyone done this? How did you wire it?

 

[AussieJester]

Cant help with the second thumb throttle wiring, but how about your standard
twist grip throttle would this possibly be a better option or are there
gear twist grip thingos on both sides? If your local (to me) i can throw
one your way free of charge i have 4 of them sitting here collecting dust

Best of luck anywayz bud.

OH and welcome to ES

Kim

 

[dogman dan]

Since I never use the front derailur, my solution was to put the rear shifter on the left side, upside down, removed the front derailur and shifter, and have gone to a half twist throttle on the right for the motor. I found the thumb throttle comfort very dependent on how the thing was mounted. I wanted full throttle to be in a comfy place for my thumb, so I had to adjust where the brake handle was to let the throttle rotate to the optimum angle. I like the upside down shifter, since now with the left hand, I roll the shifter back for more speed, just like the throttle. You could flip flop the shifters and keep both, but not with a twist throttle, but you could get a handlbar or frame mount shifter for the front gears, or use the ones that are part of a brake handle.

Another way would be a left hand twist or half twist throttle, and some other way to shift the front gears.

 

[jerryt]

I have a left hand thumb throttle on my SRAM shifting Breezer. I was skeptical since I am right handed but since I also have arthritis in my right hand and thumb, I am very happy with the left side throttle.

 

[smithinparis]

I have a half twist grip, and found that my hand would get quite sore holding in one position for a long time (it's an hour and 10 minute commute). So I cracked it open and took the spring out. The problem this causes is that is obviously doesn't turn off by itself, and I can only suggest it if at the very least you have ebrakes ...
Anyway, it really does help, but if ever I have a spill, it could be dangerous due to no shutoff...

 

[Mark_A_W]

I have two throttles.

Just wire them in parallel.