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Fabrication help

Started by Jarvicious, December 01, 2010, 10:44:14 AM

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Jarvicious

December 01, 2010, 10:44:14 AM
So I finally picked up a tank for my BMW project and decided to keep the stock front suspension so now I'm off to build a new sub frame, exhaust hangers, etc.  My question is, for the sub frame, what's a good way to build a pivot into the end of the steel stock so that the whole system is removable (kinda like the sbk's) that's not going to require a full machine shop to build.  I have a good amount of hand tools and fair fabrication skills but no drill press, lathe, mill, etc.  and I'd prefer not to weld the new parts directly onto the frame permanently.   Takers?
We're liberated by the hearts that imprison us.  We're taken hostage by the ones that we break.

ducpainter

#1
December 01, 2010, 11:44:09 AM
Quote from: Jarvicious on December 01, 2010, 10:44:14 AM
So I finally picked up a tank for my BMW project and decided to keep the stock front suspension so now I'm off to build a new sub frame, exhaust hangers, etc.  My question is, for the sub frame, what's a good way to build a pivot into the end of the steel stock so that the whole system is removable (kinda like the sbk's) that's not going to require a full machine shop to build.  I have a good amount of hand tools and fair fabrication skills but no drill press, lathe, mill, etc.  and I'd prefer not to weld the new parts directly onto the frame permanently.   Takers?


Pics?

First thought is heim joints.
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Speeddog

#2
December 01, 2010, 12:07:30 PM
- - - - - Valley Desmo Service - - - - -
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Monsterlover

#3
December 01, 2010, 05:18:49 PM
Heim joints or rod ends FTW!!!
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Jarvicious

#4
December 01, 2010, 08:07:29 PM
Total newb response.  So these are pre-fabbed tips you can weld onto rod or tube stock?

No pics as of yet, I'm kinda flying by the seat of my pants.  Plan is to get the tank and forward control situation settled in, then I can work on the seat position and overall geometry.  The frame does have mounting points where the old subframe was bolted on, but I'm not sure I'm going to use them until I get the tank fitted.
We're liberated by the hearts that imprison us.  We're taken hostage by the ones that we break.

Monsterlover

#5
December 01, 2010, 08:26:19 PM
http://www.mcmaster.com/#rod-ends/=9ysok4

They do make weld in versions, but those apply more to auto suspension fab.

The sizes you'll need would be thread on and secure with a lock nut.

poke around on mcmaster.com, they have damn near everything a mad scientist would need.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**
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