Yes you can have the drums cut off center. The machine that cuts the drum
have a shaft that can be out of round or bent. I worked in a machine shop
that cut large drums for 18 wheelers and we had to check it from time to
time to make sure it was cutting true
Gary Campbell
-----Original Message-----
From: Atwell Haines <carbuff@scooter.net>
To: spitfires@Autox.Team.Net <spitfires@Autox.Team.Net>
Cc: bschwart@pacbell.net <bschwart@pacbell.net>; Brad.Kahler@141.com
<Brad.Kahler@141.com>; Andrew Mace <amace@unix2.nysed.gov>
Date: Friday, June 12, 1998 10:02 AM
Subject: Re: Shakin' Spitfire
>Thanks Barry, Andy, and Brad.
>
>I think it is the rear because I don't feel the pulsation in the steering
>wheel, but I DO feel it when I pull up on the handbrake. When just
>cruisin', brakes not applied, the car is as smooth as silk (well for a
>Spit anyway!).
>
>I have checked for bent wheels by jacking the rear of the car and spinning
>them by hand. They seem true visually. (Haven't done it with the car
>running Barry..)
>
>If I had a bent wheel, drum, or hub flange, wouldn't the shakin' alway be
>there, braking or not?
>
>One thing I maybe should have mentioned: the DPO had run one side without
>the two countersunk brake drum screws. The hub center on that side is
>galled a bit as a result.
>
>Here is a point-blank question: Has anyone ever had brake drums turned
>improperly...off-center?
>
>At 10:36 AM 6/11/98 -0400, Atwell Haines wrote:
>>I get a pulsation when the rear brakes are applied. I have replaced the
>>shoes and turned down the drums. I can still "feel" the high spots in
the
>>brakes when adjusting them.
>>
>>I have spun the drums on the car but can't see any wobble per se. (Yeah I
>>know that a dial indicator is more accurate, but I don't have one.)
>>
>>I have tried changing the relationship/position of the drums to the hubs.
>>No noticeable effect.
>
>Brad asked,
>
>>I always thought pulsating brakes were caused by the front rotors and
>>pads not the rear drums.
>
>Andy guessed,
>
>>Bent wheel? Just a thought....
>>
>
>And Barry opined,
>
>>You may well have a bent flange/hub and not see it turning it by hand.
>>Have someone watch when you drive the vehicle and see if the wheels are
>>wobbling. If that's not possible, you can support the rear of the car by
>>the frame on jacks, wheels off the ground, front chocked, or pushed up
>>against an immovable object and run the car in fourth gear and watch the
>>wheels. It will be very apparent if either the wheels or hub is damaged,
>>if you remove the wheel you can see if its the hub. That's how I found
out
>>my GT6 flange was bent, and I never noticed it when turning the drum by
>>hand-of course I never said to run it in gear when on the jack stands-you
>>didn't here it from me :-}all disclaimers apply-
>>
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