pulsing drum brake

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jabcb
Moto GP
Posts: 4317
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

pulsing drum brake

Post by jabcb »

What can be done with pulsing drum brakes?

I used search & found mention of the wet & dry paper trick but I don’t know what that is.
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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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tz375
Moto GP
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Joined: Mon Nov 03, 2008 10:47 am
Location: Illinois

Re: pulsing drum brake

Post by tz375 »

The question is whether the pulsing is caused by a rust patch on the drum or if it's out of round.

If it's out of round I guess you could try to stick wet and dry on the shoes and apply the brakes lightly (not on a moving vehicle of course) and see if that skims the tops off the high spots. I would be surprised if it made much difference but may be worth trying.

The real answer is to have the drum skimmed.
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