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Re: back brace
[Re: Scamp408]
#881076
12/18/10 01:47 PM
12/18/10 01:47 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
any pics of the premade or homemade
This is mine... home made out of 2 X 3 X .125 wall
cant see it real well but it tappers out to the bearing
flanges
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Re: back brace
[Re: DemonDust]
#881078
12/18/10 02:34 PM
12/18/10 02:34 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
So everyone that is welding them without a jig are you leaving the rear complete? Or stripping it bare?
I see Tony leaves them complete, what does everyone else do.
If you're leaving them assembled I'm sure you're draining the gear lube, or that could cause problems  
no full of gear lube, not enough heat to worry about anything if you do it right. 
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Re: back brace
[Re: DemonDust]
#881079
12/18/10 03:09 PM
12/18/10 03:09 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
So everyone that is welding them without a jig are you leaving the rear complete? Or stripping it bare?
I see Tony leaves them complete, what does everyone else do.
If you're leaving them assembled I'm sure you're draining the gear lube, or that could cause problems
I narrowed mine and back braced it at the same time
so there wasnt any guts in it... you can do it with
the guts in it but like was said ... no fluid ...
I weld about a inch then move to the other side and
just jump all around to let it cool (no fixture but
I do have a shaft and collets for set up
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Re: back brace
[Re: Scamp408]
#881084
12/19/10 02:39 PM
12/19/10 02:39 PM
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Joined: Jan 2003
Posts: 3,871
Smyrna, South Carolina
STEFF
master
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master
Joined: Jan 2003
Posts: 3,871
Smyrna, South Carolina
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The reason for a fixture is to pre-load the tubes away from the back braced side of the housing, being that when you weld, as the weld cools, it shrinks, hense warping. Here is a pic of the fixture I made when I back braced my Ford 9" Housing for my Road Runner. I have the housing bolted thru a plate, then have u-bolts at the ends of the tubes. I drew the tubes down about 3/16" each. I then Tig Welded the back brace, bouncing back-n-forth, side to side to control heat. When all done, the tubes came back darn near perfect. One side, right on, the other side within a 1/16". So, if I do another one, may only draw the tubes down about 1/8". After bracing was done, I cut the housing to the correct length & then welded new flanges on with my flange jig. DO NOT weld a back brace on, unless you plan to cut off & install new housing ends.   
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Re: back brace
[Re: STEFF]
#881085
12/19/10 03:19 PM
12/19/10 03:19 PM
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Joined: Feb 2005
Posts: 5,207
Menomonee Falls
DemonDust
master
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master
Joined: Feb 2005
Posts: 5,207
Menomonee Falls
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Quote:
DO NOT weld a back brace on, unless you plan to cut off & install new housing ends.
That jig would be very cheap to make. I like it 
Why do you have to cut the ends off if you back brace it? If it doesn't warp I don't see a problem 
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Re: back brace
[Re: DemonDust]
#881087
12/19/10 04:28 PM
12/19/10 04:28 PM
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Joined: Jan 2003
Posts: 3,871
Smyrna, South Carolina
STEFF
master
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master
Joined: Jan 2003
Posts: 3,871
Smyrna, South Carolina
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Quote:
That jig would be very cheap to make. I like it
Why do you have to cut the ends off if you back brace it? If it doesn't warp I don't see a problem
For all the welding being done with a back brace, no if's about it. It's going to warp.
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DO NOT weld a back brace on, unless you plan to cut off & install new housing ends.
