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-   -   Hand / thumb throttle ideas. (http://www.diygokarts.com/vb/showthread.php?t=41224)

Ted83 05-05-2019 04:12 PM

Hand / thumb throttle ideas.
 
In the process of re building and to suit kids and adults it's going to be better with a hand throttle attached to the steering wheel.
Be nice to see what others have done to get some ideas please!

Thanks.

mckutzy 05-05-2019 04:23 PM

On both of my bikes... I use brake levers...
For a steering wheel... you need to get one with 2 piece clamp...

itsid 05-05-2019 07:22 PM

brake levers as throttle on a bike?
Mac you are a madman! :D

single piece clamps also work (hinge style for sure, cheap press-sheet maybe not as easily)
IIRC Kelly used thumb / lever throttles
almost exclusively on his karts.

The main problem with it is how to safely route the throttle cable,
it needs to have enough slack to not bind the steering of course and tied away
so you do not kink/rip it when you try get in or out the kart..
you must avoid sharp corners or it'll be tough to manipulate
(especially for kids with less finger strength than your average adult male)

And you still need the throw of to fully open the butterfly of course.

You may want to take a look at Kelly's thread (KartRods)
Sarge II is the first image of a lever throttle I found.
unfortunately you don't see much routing

There are even commercially available karts that use throttle levers
that rear suspended whatsitcalled UK kart comes to mind... uhm drifter? Kazuma drifter?
something alike...
Anywhoo,

lever over thumb I'd say
on a kart at least.

And on a bike, twistgrip over thumbthrottle and thumbthrottle over lever
(oh the mayhem when you want to stop and throttle up by mistake)
hehe sorry mac.. but a brake lever is weird to be used as a throttle on a bike, you have to agree ;)

'sid

mckutzy 05-05-2019 07:38 PM

I do agree... At the time, it wasnt so easy to acquire a throttle setup for a bike as it is now... well... for a cheap affordable price..
On my bikes at least, throttle is the same side, Right side, and the other has the brake, also on my Square chop bike, it also has a band clutch brake actuated by foot...

Now obviously this is a bike.. but using it this way needs to be practiced for proficiency regardless....

Ted83 05-06-2019 01:16 PM

http://i63.tinypic.com/rr3ujo.jpg

So i have adapted a old MTB gear shifter and will see how it works!
Thanks!

Panhead5496 05-06-2019 09:09 PM

Quote:

Originally Posted by itsid (Post 521901)
but a brake lever is weird to be used as a throttle on a bike, you have to agree ;)

'sid

I agree, I set my dad's Baja up with one to see how it was, and we both didn't like it. When full throttle you don't have NEAR the hand grip you do when you use a twist grip.

Just like you never see a jetski with a twist grip, always lever based, you hardly even see a bike with a lever based throttle.


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