Hydraulic Throttle Control Using Syringes?

Nehmo

Nehmo

Member
blue201212191.jpg
This pic doesn't have anything much to do with my question, but it's the current condition of my bike, so I posted it.

It requires an trivial amount of force to move the throttle at its shaft in the carburetor. Using a cable for control makes a much larger force necessary at the handlebar control. Although this system is acceptable, of the ways to improve the situation, one is to make a hydraulic system.
I’m considering using two large syringes as control & actuator. I think I can get them in 5cc versions and larger. Has anybody tried this?
 
It certainly would work.
I have fiddled around with using syringes as hydraulic master and slave units before, but just experimenting. Not actually accomplishing anything as ambitious as a throttle control.
 
Well see the nice thing about a twist throttle is that its a dead man's switch......you let go, it automatically stops, or more accurately in this case, returns. In an emergency stop situation, I would think that would be safest.
 
If the return spring is strong enough, a hydraulic control would act the same.
Release pressure off of the master cylinder and it would return to idle. Or if you have the idle set too slow, the engine would die.
 
Personally I'd rather see some experimentation with a hydraulic clutch than a throttle. Typically the throttle is so easy to move that I don't see any advantage to making it hydraulic but a clutch actuator moved by fluid pressure.... now that would be an improvement for many.

Just a thought; why not try using a motorcycle brake master cylinder on the handlebar clutch lever actuating a slave cylinder at the engine end to operate the clutch on a 2 stroke manual clutch?

Tom
 
Tom,

here's some info. to get you started:
http://www.youtube.com/watch?v=gl_uVt7acsk
http://www.customfighters.com/forums/showthread.php?t=39197&page=2
http://www.john-stichnoth.com/Hebo.html

http://www.650rider.com/index.php?name=Forums&file=viewtopic&t=5320

Here's a kit on Ebay:
http://www.ebay.com/itm/HYDRAULIC-C...Parts_Accessories&vxp=mtr&hash=item20c48177b2

You could probably use a slave hydraulic cylinder with a hydraulic reservoir.

Now you have all the info you need, go for it and be the first with a Happy Time with a hydraulic clutch!

Good Luck,

Chris
AKA: BigBlue
 
BigBlue said:
Tom,

here's some info. to get you started:
http://www.youtube.com/watch?v=gl_uVt7acsk
http://www.customfighters.com/forums/showthread.php?t=39197&page=2
http://www.john-stichnoth.com/Hebo.html

http://www.650rider.com/index.php?name=Forums&file=viewtopic&t=5320

Here's a kit on Ebay:
http://www.ebay.com/itm/HYDRAULIC-C...Parts_Accessories&vxp=mtr&hash=item20c48177b2

You could probably use a slave hydraulic cylinder with a hydraulic reservoir.

Now you have all the info you need, go for it and be the first with a Happy Time with a hydraulic clutch!

Good Luck,

Chris
AKA: BigBlue
Click to expand...
See? I knew it could be done. Actually my clutches all work very smooth and easy so I wouldn't invest the time/money but it would make a fun project for something just a little different.
Thanks for the research time and input, Blue. It's something to keep in mind and I hope someone will try it and report on their success.

Tom
 
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