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Old 12-06-2018, 03:52 PM   #1
3 Rivet Member
 
1986 34.5' Airstream 345
Londonderry , New Hampshire
Join Date: Mar 2017
Posts: 186
Straighten my bumper!

I have an Airstream 345 motorhome that got bumped in the rear.
The bumper got pushed in about 3 inches and I want push it back
to it's original shape. They are extruded aluminum about .2 inches
thick. They are in the shape of a channel. I have a 55 ton arbor
press available.

I have been thinking about the best way to do this. I think that
I will make some wooden blocks that conform to the original
shape and use them with the press.

I have seen some amazing results in straightening alloy wheels
but they heat them. Should I heat the bumper? What temperature?

This is what it looks like next to my front bumper. The black mark
near the bend is just a reflection and not really there.
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Back side.
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This shows the extent of the bend.
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Old 12-06-2018, 04:31 PM   #2
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1967 26' Overlander
Alpine , Texas
Join Date: Jul 2018
Posts: 296
Shouldn’t be any problem . Push from inside and use some boards under to keep from warping . Go slow and move around . Take a 2x4 and round it to the radius of the back side after you get to that part . I just did a big steel bumper and going slow it looked perfect . Good luck , Blue .
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