Mini sand dragger

[Bugpac]

I am seriously considering building a small sand drag rail this winter, Not sure if i wanna adapt a mc engine to cvt, Or just use a big snowmobile engine, Certainly will have a cvt drive either way.. Its likely i will have to have a short chain either way for the final drive, Unless i build some sort of final gearing box, no reverse tho...I havent outlined the dimensions etc yet, I'm thinking somewhere around 12' long, maybe 14...Ill post more later when i get going...Suspension should be rather easy, not sure what i want to do there yet....probbaly some sort of link rear live axle drive...

[borris]

Forget that !  Put a busa in it mounted longitudinally with a coupler directly into a small auto diff with a spool in it. Use an airshifter with ignition interrupt triggered by rpm switches. Then use a four link rear suspension on it and you will have a badass sand rail dragster.The 14 may be a little long.I'd likely shoot for 12' with a 4 link.

[Bugpac]

How about a narrowed 9" housing, and just build a d shaft that has a yoke fits right on the output shaft?

[Bugpac]

How much rear travel? about 2"

[borris]

NO! With a 4 link you want travel.Perhaps as much as 5" on an asphalt dragster.You'll want at least that much in the sand. Are you familiar with 4 link suspension principles?

[Bugpac]

very, but seems like far to much travel a sand dragger, Maybe droop travel, but you surely wouldnt want it to even come close to bottoming out....and you certainly would not want to much ride height either, thats why i question the travel..

[Bugpac]

Single a arm front suspension?

[borris]

[Bugpac]

The center of the rear axle has to be higher than the center of the two forward links correct?

[borris]

 UMmmm no. I'll see if I can find some old info for you.I used to have a manual that explains it all in detail in language we all can understand I got from Chris Alston 23 years ago before he released it for sale. If it is still available it is worth it's weight in gold sand! LOL. I'll look and see if I can find a source for it for you. Now that I've evaded an answer I have to plead for mercy.There's a few other things that need to be known to give an answer.You need to design a car first and find it's C/G(center of gravity) and then determine the 4 link mounting locations. 

[VLADD]

I went to school with Chris...Santa ana CA.

[borris]

Chris Alston of Alston Race Cars? WOW! Cool!

[Bugpac]

Im thinking rigid with twin tripples in it... what do you think about that vladd?

[Bugpac]

that puts me about 300hp on gas, add alchy and a bottle, so 500hp or so? in 800lbs

[AdollarShort...]

Double triples. That would be interesting to see. Are you planning on using CVT's on each engine? How are you going to get the power to the ground? Jackshaft? I seriously doubt you could get a twin engined rig down to 800#'s.