So I have this friend... - Wrist Twisters
 
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post #1 of 6 Old 05-20-2012, 07:16 PM Thread Starter
jrj
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So I have this friend...

And he has 2 spare S-10 4 cylinders w/ 5 speed combos laying around taking up space. His way of dealing with the problem is planning to turn one of them into a motorcycle using parts he has laying around. We (well, mostly he) have the basic idea for the shape/layout of the frame but we aren't quite sure what material we would want/need to handle the weight. The motors will stay stock but get switched to carburetors to get rid of all the electronic crap, so horsepower won't be astronomical. Would we be able to get by with 1" steel square tubing? He was thinking aluminum tubing, but I'm not sure how wall thickness would come into play. We have both been mechanics for awhile and are both relatively intelligent beings, but we don't have the education/experience in fabrication of this kind to know exactly what we need. The frame is what is going to take the most time getting right, so... Any ideas??

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post #2 of 6 Old 05-20-2012, 07:41 PM
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Originally Posted by jrj View Post
And he has 2 spare S-10 4 cylinders w/ 5 speed combos laying around taking up space. His way of dealing with the problem is planning to turn one of them into a motorcycle using parts he has laying around. We (well, mostly he) have the basic idea for the shape/layout of the frame but we aren't quite sure what material we would want/need to handle the weight. The motors will stay stock but get switched to carburetors to get rid of all the electronic crap, so horsepower won't be astronomical. Would we be able to get by with 1" steel square tubing? He was thinking aluminum tubing, but I'm not sure how wall thickness would come into play. We have both been mechanics for awhile and are both relatively intelligent beings, but we don't have the education/experience in fabrication of this kind to know exactly what we need. The frame is what is going to take the most time getting right, so... Any ideas??

Sounds like a fun project, BUT I've got about 300 more questions I'd like answered. The frame material question would be better answered by showing a mock up of the planned frame. You could build an AL frame to handle the weight, but if you've never done it before, I would do steel because its much more forgiving. Also its going to weigh a ton no matter what you do.

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post #3 of 6 Old 05-20-2012, 08:02 PM
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First thought I had was a go-kart.
Does he want to get rid of one of them?

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post #4 of 6 Old 05-20-2012, 08:06 PM Thread Starter
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I was thinking the same thing about the aluminum vs. steel. Not to mention it would be easier to weld up a steel frame with the equipment in his garage. I don't have a drawing yet to share but the basic idea for the frame is a single spar over the top, down the middle, with 3 spars on each side going down around engine deck height and 2 down the front. When I get a drawing in my hands I'll try to post it.

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post #5 of 6 Old 05-20-2012, 08:07 PM Thread Starter
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Originally Posted by EatDirtFartDust View Post
First thought I had was a go-kart.
Does he want to get rid of one of them?
Everything he owns has a price. If you want to come all the way to NC, I'm sure he would be willing to deal.

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post #6 of 6 Old 05-25-2012, 11:02 PM
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Originally Posted by jrj View Post
The motors will stay stock but get switched to carburetors to get rid of all the electronic crap, so horsepower won't be astronomical.
Hahaha, I have a '92 S10 with the 4-banger 5-speed and she can't even get out of her own way I don't think there is a such thing as a powerful Iron Duke 2.5.

Anyways, this sounds like a fun project! I'd try to make the frame out of steel since-
1.) steel is relatively cheap and sounds like you guys have the equipment to make it work
2.) the frame will have to be quite beefy to support that turd of an engine/tranny setup
3.) the stock engine mounts are all steel so it makes them easier to weld onto the frame

I have a few ideas on how this setup can go, and it seems like it would have to be a long and low bike. I'm curious on how to use the shifter. If you sit above the tranny, the shifter is in your crotch, and the bike has two or three feet of frame in front of you. If you sit on the engine, would you run a contraption to remote locate the shifter?

It would be neat to use a beefy shaft-drive rear end to adapt to the tailshaft of the tranny and go with a hardtail setup.

Would it be a foot-operated cable clutch? So many ideas to ponder
Good luck! I'd love to see some sketches and pics of the progress!

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