To replace or not to replace: roof skin on 77 Trans an - Page 9 - Hot Rod Forum : Hotrodders Bulletin Board
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  #121 (permalink)  
Old 04-16-2017, 12:31 PM
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Quote:
Originally Posted by Schroeder View Post
Great stuff. Thanks. And just to make sure I'm getting this all right, if I have a outward bulge I need to weld at the highest point on the BACK side, right? I'm running this through my head trying to picture how the metal will shrink and I'm not sure I'm imagining it correctly or if it even matters. I hope I get a couple hrs in the shop today to cut a 20ga test panel out and try some of this great, great stuff you guys have given me. It's exciting.

I thought I scraped these out, but I guess not! I found em in the junk pile yet. Is this my new slapper?


Can you guys address whether the TIG would be better for this job or not (again maybe something I just have to test and try) and if the slapper NEEDS little teeth on it or not?


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You said you ordered a shrinking disc.

STOP applying any other heat source other than the shrinking disc.
Make yourself a slapper while you're waiting.

Yes, those leaf springs are slappers waiting to happen.

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  #122 (permalink)  
Old 04-16-2017, 12:39 PM
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Here's my favorite slapper. Not to big. It's concave on the bottom.
I've since replaced the handle as the L shaped connection cracked the weld. I now have a straight tube welded to it.

You can make the slapper from one piece of leaf spring by getting it red hot and bending it in a vice.
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  #123 (permalink)  
Old 04-16-2017, 12:55 PM
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Ok. Simple enough.. gonna do that now!


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  #124 (permalink)  
Old 04-16-2017, 01:36 PM
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Is there a certain thickness I shoukd aim for on the slapper? Your leaf spring looks very thin. Mine is about 1/4" thick at the thickest and maybe 1/8" at the thin end. Made it about 5" long. It's 2.5"wide. If this is too much I have some 11ga steel I can make one from.


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  #125 (permalink)  
Old 04-16-2017, 02:08 PM
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Good enough??



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  #126 (permalink)  
Old 04-16-2017, 02:24 PM
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Not so good. Like I said, try bending one out of one piece of spring.
Go about 6" for the blade, 1-1/2" for the bend and about 6" for the handle.

Use your zip cut to make the handle about an inch wide. And the 1-1/2" bend part.

Heat it red hot and bend her up.

Regular steel will not work. You're sitting on a gold mine of nice slapper steel in them springs.

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  #127 (permalink)  
Old 04-16-2017, 02:55 PM
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Yea, urs are all much thinner than mine. These springs are too thick . 1/4" thick

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  #128 (permalink)  
Old 04-16-2017, 03:06 PM
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Theres a light spoon in this $15 set. The hammer and dollies are also useful items.

4 Piece Door Skin Repair Kit
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  #129 (permalink)  
Old 04-16-2017, 05:17 PM
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For slapping, the comma dolly is the best as it's convex both directions.

CP554 Comma Dolly
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  #130 (permalink)  
Old 04-17-2017, 08:02 AM
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Quote:
Originally Posted by 123pugsy View Post
For slapping, the comma dolly is the best as it's convex both directions.

CP554 Comma Dolly
LOLOL, a "comma dolly" LOLOL I have never heard it called that, have owned one for 40+ friggin years and have never heard it called that.

Makes perfect sense and explains it perfectly.

Brian
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  #131 (permalink)  
Old 04-17-2017, 11:21 AM
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The red and silver hammer set he got has a comma dolly in it but the face is not convex, just curved. Same might be the case with that spoon in my link to the door skin set. Back when I bought mine they were yes convex both ways but they might be just curved now too.
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  #132 (permalink)  
Old 04-18-2017, 06:05 AM
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Why do I need a convex spoon and dolly for slapping? It seems like the radii never match the surface anyway. Sure, the roof skin is convex, but in a small localized area that's negligible


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  #133 (permalink)  
Old 04-18-2017, 01:06 PM
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Quote:
Originally Posted by Schroeder View Post
Why do I need a convex spoon and dolly for slapping? It seems like the radii never match the surface anyway. Sure, the roof skin is convex, but in a small localized area that's negligible


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Because the edge of a non convex dolly will create some wonderful dents.

Do yourself a favor and go get a beat up hood, door or trunk lid from the wreckers to practice on.
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  #134 (permalink)  
Old 04-18-2017, 02:24 PM
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To replace or not to replace: roof skin on 77 Trans an

Will do. Using a masonry rodder as a spoon now


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  #135 (permalink)  
Old 04-18-2017, 04:33 PM
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Quote:
Originally Posted by Schroeder View Post
Will do. Using a masonry rodder as a spoon now


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Why?
You have the makings for nice slappers on hand.

You got a pic of this thing?
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