Jim Thomas Drawings

MAStuart · #1 (**permalink**) 06-13-2015, 07:20 AM

Hi Larry What I am getting at is how do you know the jig you are using is an accurate jig of an original. There will be problems in just building a jig accurately when welding it together . Most people would be shocked to see how much a weld can pull a joint when lets say a piece of tube gets welded on one end and the other end is 3 foot away. I have seen where a part was jigged up and welded and after the part was taken out of the jig it is imposable to put back in the jig. I would think that the original cars chassis varied from car to car for this reason alone. If the jig was built off of an original car how does anyone know that that car didn't have a crash in the past and have small twists and bends that cant be seen?

Mark

cobrakiwi · #2 (**permalink**) 06-13-2015, 09:07 AM

Building a frame from scratch is a large project, having something to copy or good plans is a must.
I would follow ScratchBuilders advise and contact Chuck.
I have built a few 427 type frames now, believe me, it is a lot of work but also very satisfying if you can pull it off.

One of my build links, New Build

Here is a pic of one of my 427 frames I just completed and dropped off to powder coating last week.

IMO, It will make your task a lot easier if you have all your suspension and body first.

I say have a go and good luck!

LMH · #3 (**permalink**) 06-13-2015, 10:42 AM

Quote:

Originally Posted by MAStuart

Hi Larry What I am getting at is how do you know the jig you are using is an accurate jig of an original. There will be problems in just building a jig accurately when welding it together . Most people would be shocked to see how much a weld can pull a joint when lets say a piece of tube gets welded on one end and the other end is 3 foot away. I have seen where a part was jigged up and welded and after the part was taken out of the jig it is imposable to put back in the jig. I would think that the original cars chassis varied from car to car for this reason alone. If the jig was built off of an original car how does anyone know that that car didn't have a crash in the past and have small twists and bends that cant be seen?

Mark

I really don't know if the car copied for the jig was ever in an accident or not. I know it was built using an original car though, during it's restoration. I'm not to a build point that I can say everything came into adjustment perfectly, so as for my frame, I can't say everything is perfect. Jeff Gagnons car came out of the same jig though, so he could say better than I.
Larry