repairing fenders o

[Soundguy]

yep.. probably an epoxy.

I see plastic, fiberglass, abttery and gast tank repair epoxy sticks... jb waterweld is one of the more versatile as well.

 

[j t huskins]

These fenders are junk. The fenders on mine and one of my friends TC40 have cracked just from vibration and every day use. Mine are still holding in place but his cracked so far that one fell down onto the tire and had to be removed. NewHolland should have to recall these ill designed pieces of plastic. My friend bought and installed Ford 2630 metal fenders and solved his problem. They actually look good on the TC40. He just had to make a bracket to hold the loader joystick. I am going to fabricate some heavier metal under braces for mine and try to stop them from getting to the breaking off point

 

[Soundguy]

i love metal sheet metal vs plastic or fiberglass. way to easy to reapir tins vs plastics.. fiberglass is a lil better.. but still.. tin is easier..

 

[PILOON]

Most of those 'plastic' fenders are PVC as it is a very easy product to mold.

From way back (snow ski bottoms were PVC) I discovered that melting and dripping PVC (as basic as poly bags) to fill the gauges and cracks worked.
Update to current repairs I use hot glue sticks and melt/fuse the cracks and occasionally move the molten PVC around with a soldering iron and kinda iron things smooth.
I have even repaired plastic wing tips on some Cessna aircraft with hot glue and the repairs held up.
Think of it like welding two pieces of steel, you literally melt metal and fuse the pieces together!
Same works for plastic but you need same plastic as the filler.
Hot glue sticks serves the purpose and is sort of like using brass rods to braze two pieces of steel.

A tip; if the crack is partial, stop drill the crack where it ends (like 1/8" hole at the crack end) otherwise cracks will continue to grow.
(This was a standard and accepted technique on aircraft plexiglass windshields!)

 

[jimmysisson]

Even steel fenders can be abused by a tree.

Jim

 

[jinman]

Most of those 'plastic' fenders are PVC as it is a very easy product to mold.

The fenders on New Hollands are actually fiberglass. I've chipped the rear lips of mine with limbs caught on the rear tires and it is clearly fiberglass substrate with a thick colored top layer. I don't think the fenders are actually painted. The color is in the material.

 

[Gary Fowler]

Maybe composite is the right word for them then. Fiberglass for rigidity and with a plastic top coat with the blue color mixed in. That is going to make it a lot harder to make a non-noticeable repair.

 

[ray66v]

Before determining the best way to repair it, you need to determine what they are made from. Here are some of the many products out there.

If they are made from traditional fiberglass, the underside, or inside, (uncolored side), will be rough. Using fiberglass for this application would be unlikely.

If they are a composite that contains loose fiberglass fibers, and it is smooth on the inside, It is most likely SMC. This is a likely possibility for this application. It has mostly a pale grey color, with occasional darker swirls or streaks visible on the uncolored side. This is the material that Corvettes built in the last 40 years, are actually made from.

ABS plastic is black in color in the inside, no fibers and very brittle if bent too far.

PVC is solid white or grey with no fibers. They are not commonly used this way.

Both ABS and PVC smell exactly the same as they do when you cut or sand plastic pipe made from them.

All of the above materials are rigid, and have very little flexibility to them. If you parts flex, they are made from something else.

Do your parts fit any of these descriptions?

 

[Soundguy]

in almost all cases of fiberglass or plastic parts, I usuallt repair and reinforce fromt he underside, fill and then repaint the entire panel. I've found that fiberglas patches over metal panels, resin-d on.. or epoxied on, that cover an area way past the damage on either edge, make good repairs. after that it's all surface prep and body work.

that's why I like metal.. easier to fix, before the body work starts..

 

[jinman]

If they are a composite that contains loose fiberglass fibers, and it is smooth on the inside, It is most likely SMC. This is a likely possibility for this application. It has mostly a pale grey color, with occasional darker swirls or streaks visible on the uncolored side. This is the material that Corvettes built in the last 40 years, are actually made from.

Your description of SMC sounds exactly like what I saw on my chipped fenders. My money is on that rather than traditional fiberglass.