Servi car with big twin 4 speed

2139 Views 13 Replies 6 Participants Last post by 49Flat, Mar 14, 2012

bleedinknucks

Discussion Starter · Mar 13, 2012

Has anyone here done this? I have a big twin 4 speed and wouldlike to put it behind a 45" flattie in a servi car frame. I know im going to have to flip the rear and a custom tranny plate will have to be made. Im curious if anyone has done this. Maybe some pics.

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CarlLaFong

· #2 · Mar 13, 2012

A Norton or Triumph trans, as well as a BT 4 speed, is 1:1 in high, same as the 45.

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ole redeye

· #3 · Mar 13, 2012

Run a british gear box, lighter and much less expensive, plus has been done on here (JJ) 3-4 times.

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bleedinknucks

Discussion Starter · #4 · Mar 13, 2012

I was gonna run the big twin trans cuz i have it already. But ill look around for a brit trans I guess. I still need to finish the motor and do some work in the frame.

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Scavenger

· #5 · Mar 13, 2012

Have details on the set up somewhere will dig em out for ya

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49Flat

· #6 · Mar 13, 2012 (Edited)

This ain't for everyones taste but my 45 went into an aftermarket bigtwin hardtail frame, using late 70's HD 4 speed, spaced the engine just over 1.5" with some brackets/shims I made. Hell it's all I could afford at the time

Purists beware and if ya'll don't like it listen to "Killin in the name of" by Rage!! I've changed to good grade 8 bolts since the pics.

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bleedinknucks

Discussion Starter · #7 · Mar 13, 2012

Scavenger said:
Have details on the set up somewhere will dig em out for ya

Awsome.

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bleedinknucks

Discussion Starter · #8 · Mar 13, 2012

Hey 49flat, what belt drive did you use? Also any more pics of that bike?

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49Flat

· #9 · Mar 13, 2012

Bleedin'knucks, used a BDL 1.5" drive, old 3 stud HD clutch...what I had on hand when I decided to build the bike. It's a work in progress but hoping to ride it this summer.

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iiggii

· #10 · Mar 13, 2012

I like !

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bleedinknucks

Discussion Starter · #11 · Mar 13, 2012

Thats a cool tank. I put a sporty tank on my servicar just to see what it looked like, i wasnt feeling it. I think im going to run a wassell and tuck an oil tank under the seat area. I have a set of stock tanks with the oil tank integrated but i dont think im going to run them. I dont think theyll look good with a skinny springer.

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49Flat

· #12 · Mar 14, 2012

Thanks guys...Bleedinknucks I'd sure like to see your project in progress, I live for threads like that...don't care what the hell people use for fab materials or powerplants, run what ya brung and make it work!!! Oh of course keep it HD for official site rules

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bleedinknucks

Discussion Starter · #13 · Mar 14, 2012

Ill have pics of this project when i have more stuff going on. This is going to be a fun bike to build im sure. Itll be fun to ride too im sure.

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49Flat

· #14 · Mar 14, 2012

Homebuilt = family fun!! More power to ya and I'll be watchin for photos.

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