Author Topic: Mounting of throttle/brake with Shimano shifters  (Read 9531 times)

Offline MikeX

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Mounting of throttle/brake with Shimano shifters
« on: November 07, 2012, 12:16:57 PM »
First off, hi everyone - I'm new here. Please confirm me as I have a few questions before buying an MPIII.


I always see the thumb/twist throttle and brake mounted on handlebars with twist-type gear shifters (or no shifters).
What if I have a Shimano click shifter with integrated brake, like this?


I'd like to add a thumb throttle, like this:

But the ring and especially indicator are very bulky and would impede on me using the shifter. Any solutions?

Also I wonder if it's possible to modify my shifter's integrated brake lever to activate regenerative breaking, using parts from the MPIII kit's levers.

Thanks!
« Last Edit: July 03, 2017, 12:02:55 AM by Bikemad »

Offline atcspaul

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Re: Mounting of throttle/brake with Shimano shifters
« Reply #1 on: November 07, 2012, 02:13:45 PM »
i had the exact same shifter kit with my trek 3500. I ended up buying a new shifter (click style) that did not have the brake integrated into it.  inexpensive one and use the golden motor regen brake levers. your shifter is not that important.  you will most likely just keep the bike in high gear to pedal assist and never shift at all unless your battery runs out.
« Last Edit: November 07, 2012, 02:17:27 PM by atcspaul »

Offline Bikemad

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Re: Mounting of throttle/brake with Shimano shifters
« Reply #2 on: November 07, 2012, 04:18:06 PM »
I agree with Paul, it will be much simpler to replace those gear changers than try and modify them.

I prefer the more natural action and cleaner look of the twist throttle control:

I just wish the grips were shorter, or at least went completely over the handlebar instead of sticking out an extra 25-30mm on each end.  ???

But, if I was planning on using a thumb throttle, I would fit of a pair of these:


And a 11-30T 7 speed thread-on freewheel:


The 30 tooth 1st gear sprocket is not likely to be used much (if at all) but the 11 tooth 7th gear sprocket will be a necessity if you want your legs to be able to keep up with the pedals while the motor is running at full speed. ;)

Here's a handy little tip for anyone using the thumb throttle:
Find a couple of coins or washers which are the same diameter as the handlebars (~22mm) and pop one inside each of the rubber grips before pushing the grips onto the handlebars. If your bike falls over, they should prevent the handlebars from punching a hole right through the end of the rubber grips as they hit the ground. ;)

Alan
 
« Last Edit: July 03, 2017, 12:02:30 AM by Bikemad »

Offline dBlues

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Re: Mounting of throttle/brake with Shimano shifters
« Reply #3 on: November 07, 2012, 04:44:32 PM »
I made a hack using hot glue and cable ties, I stripped off the regen switch and used some cable ties to connect it firmly to my hydraulic disc brakes. It's been ok, just ugly :)

I can send pics later, when I solve couple of other things :)

Offline MikeX

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Re: Mounting of throttle/brake with Shimano shifters
« Reply #4 on: November 07, 2012, 04:52:38 PM »
Thanks, guys

I wanted to keep the bike as "stock" as possible, but I think you're right - it might make more sense to just use the regular kit at the expense of replacing the shifter/brake.