3 speed tranny??

[freakboy]

Its just a solid swing arm with the engine and what not mounted to it, i can take pictures tomorrow i just got back from a party and i'm way to tired to walk. Its a some what small kart it has 1 seat but its kinda long its not as cramped as a dingo. i will try to google the kart and find it. http://www.softdisk.com/sites/gokarts/img/906c.jpg

I was going to make a double a arms for the front, because the shocks are so horizontal that the shafts keep on bending. so im re doing that. making dual a arms in the back. i still need to find 4 u joints.

And on top of that im putting the 20 hp vertical shaft engine in it. as soon as i get back to school i have mills cnc's any type of welder lathes out the wazoo. and a bunch of kids who do good work. I also can bring it in anytime to work on it. i also have acess to autocad 2009-2010 and inventor 2009-2010.

 

[frederic]

If you're going with an independent suspension on the drive wheels you'll more than likely need CV (constant velocity) joints, one per side. The reason is u-joints do not allow the axle to change length as the suspension articulates, whereas CV joints do - in some cases up to three inches for really large ones.

You don't need CV's if you can measure precisely, and put your two u-joints in line with everything else.

One needs to be on the line of the kingpin inclination angle, and the other needs to be on the line drawn through the suspension mounting bolts (the equiv of the kingpin inc angle but on the chassis). Then the axle will not need to change length as the suspension articulates.

If you're off more than a fraction of an inch, you'll be stressing something and eventually break parts, likely the u-joints.

Another solution to this need for an adjustable length axle is to be a copy-cat and make a driveshaft that can adjust in length, as often is the case on full-size pickup trucks.

Maybe this could be your final project? If I end up with an independent rear end this is what I'll be making instead of making/buying CV joints. In fact, I already have mine designed.

 

[freakboy]

what if i get the axles in the middle where its on a incline if i can get someone to put splines or mabey just 4 keyways on both axles. and then make like a 6 inch peice that goes on it so its adjustable? and i might just use a cv joint. i have to heavy duty ones from my moms expidition they would need to be turned down alot there a little to beefy. and inside of them they are like star joints or something.

 

[freakboy]

Any one have any ideas on a clutch to use? Or how to make one?

 

[frederic]

Need more detail as to what you are thinking as far as a clutch. There's the standard automotive type - metalic pads (like brake pads) pressed against a flywheel. There's the centrifigual which is like automotive drum brakes that spin.

 

[freakboy]

what would be the easyest to make? and the most simple?

 

[freakboy]

Alright i opened up my trans axle and decided to use all 6 gears neutral and reverse. i have all the ratios written down here. I want to use the spline shaft were the brake rotor was to run a sprocket to the axle. but im still trying to think of a way to make a clutch that will work good and i can engage easily and disengage. any ideas? i also need to figure out how to run a input shaft.

 

[Kaptain Krunch]

Try to convert a motorcycle clutch basket. That would be awesome.

 

[freakboy]

I dont know how i would be able to get that to work.