Brake drums, was Step down headlight rims

[Peter Pleitner]

Hi 750/101ers, Listen up mechanics! What do drums have to do with headlights, as in the subject line??? PLEASE change subject line to represent content of your message. How would you like a manual with its index all mixed up? Now, about drums, Ian - those bands of yours were used to keep thin drums from splitting. Used to be common for Model A Fords, etc. until someone made cast iron drums. Similar bands are also used when turning drums to keep your ears from suffering through all the screeching and bell ringing. Dave et. al. - Now on to turning drums. Not a good idea using a drum lathe and carbide cutter on steel drums nor Alfin drums. Why? You have to remove too much material to get a good surface (0.004 to 6 inch) because the cutter just follows the surface taking anything less. And besides, any hot spots (hard) the cutter just skips over. By far the better method is to grind the drums. Usually the grinder attachment (only supplied with old brake lathes) has been misplaced. Cheers, Peter - that of the bands which some cars have had on the brake drums at one time. it was fitted with these bands around the drums; presumably fitted as an aftermarket fix for the out of round problem. I still have them hanging on the garage wall as a souvenir. Ian Thomson ----------

> On Mon, 18 Feb 2002, Dave Norris wrote: > > If the drums are out of round you could get them skimmed by someone > with a brake lathe. I'm sure what the limits are for skimming drums, > i.e. maximum inside diameter. Anyone have this information? > >Problem is, the drums are already so thin they can't take much of a cut. >And being steel rather than the more commonly used cast iron, it won't be >long before they warp again. Warped steel drums might as well be thrown >away, or sold to someone building a trailor queen.

[i.thomson@talk21.com]

Sorry Peter, I will promise to change the subject line in future! Are you suggesting that the bands were fitted to the drums (or some drums) as original equipment - or do you think it was a common after market "accessory". Ian Thomson

> >Listen up mechanics! What do drums have to do with headlights, as in the >subject line??? PLEASE change subject line to represent content of your >message. How would you like a manual with its index all mixed up? > >Now, about drums, Ian - those bands of yours were used to keep thin drums >from splitting. Used to be common for Model A Fords, etc. until someone >made cast iron drums. Similar bands are also used when turning drums to >keep your ears from suffering through all the screeching and bell ringing. >

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[Peter Pleitner]

Hi Ian, Definitely not original, but after market. Usually supplied by shop that turned drums beyond spec. Can't imagine, as some suggested they were used to keep the drums round (then after banding and heating they return to round? - doubtful). They were intended to prevent cracking the drum. Another point of advise, don't set hand brakes when drums are hot. Cheers, Peter -----Original Message----- From: i.thomson@talk21.com [mailto:i.thomson@talk21.com] Sent: Wednesday, February 20, 2002 3:50 AM To: pleitner@dundee.net; fold@bcpl.net; mg-tabc@yahoogroups.com; mg-tabc@yahoogroups.com Subject: Re: Brake drums, was Step down headlight rims Sorry Peter, I will promise to change the subject line in future! Are you suggesting that the bands were fitted to the drums (or some drums) as original equipment - or do you think it was a common after market "accessory". Ian Thomson

> >Listen up mechanics! What do drums have to do with headlights, as in the >subject line??? PLEASE change subject line to represent content of your >message. How would you like a manual with its index all mixed up? > >Now, about drums, Ian - those bands of yours were used to keep thin drums >from splitting. Used to be common for Model A Fords, etc. until someone >made cast iron drums. Similar bands are also used when turning drums to >keep your ears from suffering through all the screeching and bell ringing. >

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