Bike carb conversion: Gas pedal travel issue

nyberrg
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Posts: 28
Joined: Fri Aug 22, 2014 11:51 am

Bike carb conversion: Gas pedal travel issue

Postby nyberrg » Wed Aug 14, 2019 12:58 pm

Been building a 16v on carbs for a while now. Gonna run Mikuni carbs from a Kawasaki Ninja ZX6R.

Today I ran in to an issue while trying out throttle cables. Since the throttle cable mount point on the carbs is so small in diameter compared to the stock 4age I can barely push the pedal down an inch before I have full throttle.

Anyone else running these carbs on a 4age or know a nice way to solve the problem that doesn't involve sketchy welding to make the throttle cable run a longer route to fully open the throttles? :|

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jondee86
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Location: Wellington, New Zealand

Re: Bike carb conversion: Gas pedal travel issue

Postby jondee86 » Wed Aug 14, 2019 3:44 pm

Ideally you would want to swap the cable quadrant on the carbs for an AE86 EFI
sized throttle quadrant. If you can't swap the whole quadrant you might be able
take the outer part of the AE86 size quadrant and tack that onto the bike quadrant.

Image

There are other hacks that can get you there but this is the best way :)

NB: I stole this image from the Battle Garage website and they actually sell this
quadrant as a kit for converting 4age 20V throttles from the OEM linkage. Don't
know if you could use it on your carbs but it shows what you need to do to get
full travel on your gas pedal.

Cheers... jondee86
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man.

totta crolla
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Re: Bike carb conversion: Gas pedal travel issue

Postby totta crolla » Thu Aug 15, 2019 1:35 am

The quick and dirty way is to change the throttle pedal arm length.

davew7
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Location: Michigan

Re: Bike carb conversion: Gas pedal travel issue

Postby davew7 » Thu Aug 15, 2019 4:49 am

Take totta crolla's idea one more step. Make the throttle pedal arm adjustable. I used the cable eye end from the stock pedal, and threaded it into a lower tube section. You can then thread the arm length up or down, to the vary the leverage i.e. travel. Once you get the correct length lock it down with a jam nut. davew7

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nyberrg
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Re: Bike carb conversion: Gas pedal travel issue

Postby nyberrg » Mon Aug 19, 2019 2:20 am

Ended up having a bigger wheel fabricated and welded to the smaller wheel on the carbs. Need to relocate the cable a bit for it to be 100% but it seems like a good solution since removing the stock wheel seemed hard on my carbs.

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