fully-built, high speed, independant suspension kart build

[rugbyguitargod]

The kind of suspension big head is very primitive, in its performance. That way will have very limited travel, due to only having a single universal joint.

For what you are looking to do, I would look a driveline with 2 articulating joints on each side. For an example, use a PTO shaft off a tractor, these are great as they slip with in each other great for AA suspension.

IMO it should be like this.

Single A arm suspension can use a single universal joint at the pivot point of the arms, this is because the wheel will move in an arch, not like Double A arm suspension.

Double A arm suspension should us something with two articulating joints, as the angle of the wheel changes throughout the range on movement.

Trailing arm suspension should be the same as the one above, to maximize its effectiveness. If you use a single UJ the travel will be limited to inches, compare to 10+ inches with 2 UJ.

If I was you, I would be looking for CVs out of a car or tractor PTO drives.

I am currently making a GPZ750 Piranha, I will be either using PTO shafts or CV joints, depending on what I can get my hands on, as well as using double A arm suspension.

Jeremy.

could a setup similar to this work in a high-speed application? such as with a 1000cc motorcycle engine? looking to do something like that suspension/axle setup, but i am not really sure on:

1) what type of diff/axle/rear end to use (ATV? car diff w/CV Shafts?)

2)tires/rims would be big and wide enough to accommodate disc braking on all four corners. (15x7 with a 225-55 race tire)

3) HOW to connect such an assembly to a motorcycle transmission?

basically, i'd like to be able to put this thing on a road course and lap the crap out of supercars lol. i love watching the gixxerkart vids, but the main thing that annoys me is all they're good for is DOING DONUTS and not much else. i want one that is practical and can do 175+ safely, handle well and slow down well enough.

first post on here, but i have been planning this for years. the frame is the easy part for me; the hard part is figuring out exactly what parts to use and how to put them to use reliably

 

[bighead]

Super cars? Where can you race super cars Vrs Buggies at?

Look at this. http://www.diygokarts.com/vb/showthread.php?t=10975

 

[rugbyguitargod]

i also looked into some larger two stroke engines (as suggested by rusty) because of their lighter weight to power factor, but the only ones that make anything close to the power levels of a liter bike are from jet ski's.

the ZX14R engine looks like a top candidate for me. 189 HP and 145 lb/ft of torque sounds fitting. if i ever need anything more than that, i could always go forced induction with a lower comp ratio rotating assembly and turbo.

 

[bighead]

Some sled engine push 300 to 400 500 600 700 hp plus.

http://www.youtube.com/watch?v=WTeufdhZSak

http://www.youtube.com/watch?v=sMa6PYc5dlU&feature=related

Here is some more pics in a vid of the green buggy above.

http://www.youtube.com/watch?v=BPKAPh-HlC8&feature=related

 

[rugbyguitargod]

can't watch any of em, my work internet blocks youtube

 

[newrider3]

If you're considering going 175+ mph/kph in something you're intending to build yourself, I sure hope you're an engineer or are willing to pay one.

 

[rugbyguitargod]

If you're considering going 175+ mph/kph in something you're intending to build yourself, I sure hope you're an engineer or are willing to pay one.

oh yea, i definitely intend on having one made. come to find out, there is a place about 1 1/2 hours away in Durham, NC called 'East Coast Sandrails' and they make completely custom frames and rolling chassis built to spec. i'm sure if i described what my intentions are, they could build me a rolling chassis, that way all i'd have to do is figure out the electronics and the drivetrain layout

www.eastcoastsandrails.com

 

[newrider3]

I would try to talk to someone who has worked on a Formula SAE project about suspension designs.
Suspension geometry that may work great off road, will more than likely blow hard on a paved road course.

 

[Rustydog2010]

You want to go close to 300km/h? That is insane. A ZX14 isn't going to push a kart, serval hundreds of KGs to that speed, let alone it probably cant get the bike to that speed. I think you need to be realistic, 250km/h? 200km/h? The Barracuda can do in excess of 200km/h I think, they are usually powered by Hayabusas. Is this for on road or off road? Come to think of it, I think I have seen a thread that may be helpful, i'll try find it.

Jeremy.