Straightening a 914, no one around here has a cellette |
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Straightening a 914, no one around here has a cellette |
FourBlades |
Nov 25 2013, 10:28 AM
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#1
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From Wreck to Rockin Group: Members Posts: 2,056 Joined: 3-December 07 From: Brevard, FL Member No.: 8,414 Region Association: South East States |
I am thinking of putting my IMSA car on a frame jig and having it pulled totally straight. It was pretty hard getting the front suspension to line up when I installed it and the rear needs about an inch of spacers to get the camber right. I have not found anyone nearby that has a cellette bench to do the work. Will shops with other systems be able to get this done? This car has a 10 point roll cage in it, I hope to leave it as it and not cut any, but I guess I can replace some tubes if I have to. Can the experts give me some advice here about how to go about this or if this is a good idea. If you have been through this and don't mind sharing your experiences and costs it would be great. Thanks, John |
jd74914 |
Nov 25 2013, 05:15 PM
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#2
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Its alive Group: Members Posts: 4,796 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Just adding to the above, I think you are also going to have to cut the cage. I'm helping remake a Caterham frame now that was wrecked then attempted to be straightened on a bench. The end result was doubling the number of buckled tubes and cracked welds (as compared to the original accident). The weld cracking was a bit scarier as not all was easy to see (unlike the painfully obvious tubes) and wouldn't have been found without a cafeful inspection. For reference, Caterhams are TIG welded, fillet brazed, and them most likely stress relieved, so their joints are significantly more ductile than the MIG welds on most cages.
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rick 918-S |
Nov 25 2013, 06:47 PM
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#3
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Hey nice rack! -Celette Group: Members Posts: 20,680 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
Just adding to the above, I think you are also going to have to cut the cage. I'm helping remake a Caterham frame now that was wrecked then attempted to be straightened on a bench. The end result was doubling the number of buckled tubes and cracked welds (as compared to the original accident). The weld cracking was a bit scarier as not all was easy to see (unlike the painfully obvious tubes) and wouldn't have been found without a cafeful inspection. For reference, Caterhams are TIG welded, fillet brazed, and them most likely stress relieved, so their joints are significantly more ductile than the MIG welds on most cages. I believe that Caterham was more likely gas welded like an air frame. Specially if it's 4130. The best process for 4130 is gas welding. Tig works if properly stress relieved. The heat concentration with tig is too small causing the welds to cool fast rather than naturalize with the tubes. Lots of guys tig tube I know but I'm referring to the likely method back in the day. The best method is still old school. |
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