CMP Fender to body joins

[David Dunlop]

Hi Bruce.

If it helps at all, my 44 15-cwt Chev WIRE-5 had driver side original fenders. The fender welt on the two pieces was an oilcloth type of fabric wrapped around a small cotton cord about 1/8-inch to 3/16-inch in diameter. Width about one inch.

The left side rear fender section had been damaged, removed and repaired at some point. It had a simple flat welt in it that was an impregnated cloth with no bead on the side at all.

The same beaded welt showed up in the WIRE-5 2K1 Box finishing the seam between the walls and ceiling plywood.

Back in the early 1980’s, Spae-Naur carried a variety of the oilcloth beaded fender welt: different widths and bead diameters.

My guess is fender welting usage may have varied over time through 11, 12 and 13 Pattern vehicles, but at any given point in time, across all weight classes, Chevrolet was probably using the same welt. Simple economy of production.

Hope this helps and doesn’t confuse.

David

[Ganmain Tony]

Bruce,

I do realise you asked what was the original material that went between the guards.

I believe MAC's have a reproduction of what we call P Channel.

I got some from the local rubber store in Wagga. But it is completely rubber and has no cord running through it. (The original bits I found when dismantling the F15 did have a rope/cord in them)

I can take a picture and post it here if it helps.

[Bruce Parker (RIP)]

Originally Posted by Ganmain Tony

Bruce,

I do realise you asked what was the original material that went between the guards.

I believe MAC's have a reproduction of what we call P Channel.

I got some from the local rubber store in Wagga. But it is completely rubber and has no cord running through it. (The original bits I found when dismantling the F15 did have a rope/cord in them)

I can take a picture and post it here if it helps.

That would be great. Original is nice, but finding something that looks the part and does the job works too.

[rob love]

I have always made the fender welting with canvas and rubber cord. A welting foot on the sewing machine lets you get the cord sewn in nice and tight. Then I spray the whole thing with asphalt undercoating from a can. I do the same with cotton webbing I use for fuel tank brackets. Without the asphalt, the webbing just soaks up the water and ensures, combines with any rubbing action of the area, rust.



You will want to make sure the fenders are painted with a tough and waterproof coating like POR-15. I have seen many otherwise perfect fenders with pinhole rust through and severe pitting where the antisqueek welting was. That said, done right, it will likely outlive you.

[Bruce Parker (RIP)]

Rob, thanks for the asphalt undercoating idea. I like it and was wondering what to impregnate all my roof fiber seals with.

[Phil Waterman]

Hi Bruce


My 1945 HUP had the fender welt as used on cars of the 30s basically oil cloth folded over a bead of jut rope. But it all so had about 2" wide fabric impregnated with with either tar or cosmoline.


I bough the fender welt over the year but I have also made in out of good grade oil cloth, folding it and sewing in hard cloths line rope. Both have stood up well, but then again my trucks now live indoors so rust has not been as much of a problem in the second half of their lives as the first.


Cheers Phil

[Bruce Parker (RIP)]

Originally Posted by Phil Waterman

Hi Bruce


My 1945 HUP had the fender welt as used on cars of the 30s basically oil cloth folded over a bead of jut rope. But it all so had about 2" wide fabric impregnated with with either tar or cosmoline.

Thanks Phil, but can you clarify your comment above? Did it have the bead and the 2" oil cloth or different fenders (or trucks) having the just the oil cloth or the bead? Or was it the bead folded over making a 2" width?