Burned up brake drums?

[Tinster]

Pulled a rear wheel yesterday and found a burned up brake
drum, as seen in photo.

Rear brakes- 100% new replacement parts including wheel
cylinders and entire emergency brake cable system, etc.

Wheel cylinders installed by professional mechanic, Dave
Graves.

New brakes adjusted by yours truly with Bentley Blue in
hand and TRF adjustment tool.

Rusted brake drums cleaned up and two coats acrylic
modified, two part epoxy paint applied.

Are the burned brake drums something I need to worry
about? The brakes function very well and make no noise.
They look really bad to me. Are they dangerous to drive?

thanks,

d

[/img]

 

[14dna]

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Dale;
That is nothing more than the paint you applied to the drum, being burned off. There is always a certain amount of contact between the drum and the brake shoe. This creates heat which then removes the paint. If you scrape the drum on this surface, it will clean up and be good as new, but as far as safety goes, this is NOT!! a factor. Strictly cosmetic.
Dave
/bcforum/images/%%GRAEMLIN_URL%%/driving.gif

 

[angelfj1]

Dale: Pull the drum, and clean it up (blasting is the best) , then paint (black is correct for a 'six') with high-temp paint. I like to pre-heat first in the powder coat oven and apply the paint hot. Should last forever.

 

[martx-5]

/bcforum/images/%%GRAEMLIN_URL%%/iagree.gif It looks as though your acrylic modified, two part epoxy paint couldn't stand the heat. I would however check to make sure that your handbrake is releasing properly and recheck the adjustment on the brakes. Heat on those drums shouldn't get really hot unless you're doing some spirited driving.

I also have a feeling that the epoxy paint may be keeping the heat in the drum...sort of like insulation. That is a no-no. You want to shed heat as fast as possible. You might want to remove all of that stuff and just paint with some hi-temp engine enamel.

 

[Tinster]

Thanks all!!

Really appreciated.

I think I'll just rotary wire brush it clean for
now and put the wheel back on. The sun has popped out
between downpours and I'd kinda like to drive the car
today.

Maybe down to El Caracol, our favorite biker bar on
the beach.

d

 

[14dna]

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Dale;
You have a PM.
Dave

 

[Brosky]

I agree with the blasting and minimal amounts of paint. No need to insulate heat inside the drums.

 

[John_Mc]

Dale, for some reason when I look at that picture I start craving two Graham crackers and a bar of chocolate. Not sure what to make of it....

 

[Mickey Richaud]

Dale, for some reason when I look at that picture I start craving two Graham crackers and a bar of chocolate. Not sure what to make of it....

/bcforum/images/%%GRAEMLIN_URL%%/lol.gif S'MORES! Don't forget the marshmallows! /bcforum/images/%%GRAEMLIN_URL%%/jester.gif

 

[Brosky]

Where is Dale? He seems to have vanished since this thread.

 

[Tinster]

Maybe Dale's tearing out the rear suspension and
brakes pending arrival of yet another large box
containing new parts?

Gotta get to the bottom of this burned up brakes thing!

Smores to it than meets the eye, me thinks?

"If you miss the train I'm on.............."

d

 

[AltaKnight]

Dale.....
You likely had it adjusted just a little too tight so it's dragging all the time; I always final adjust mine after the whell is back on and torqued up, then I can spin the wheel by hand and feel for the shoes dragging.
I always set mine do that I can just feel the brakes barely touching; then drive a bit and recheck.
But I also agree with others that you shouldn't paint the drums.

 

[Brosky]

<div class="ubbcode-block"><div class="ubbcode-header">Quote:] Maybe Dale's tearing out the rear suspension [/QUOTE]

OK, that explains it. Things are back to normal. I was worried because you were so quiet, but I see that everything seems to be status quo.