I'm pretty sure, the max size is cast into the drums. The only
reason for turning drums is that if they are scored, it a) makes it more
difficult to remove them and b) the actual friction surface is reduced.
> ----------
> From: Randall Young[SMTP:randallyoung@earthlink.net]
> Reply To: Randall Young
> Sent: Wednesday, May 12, 1999 5:03 PM
> To: 'James Luke'; triumphs@autox.team.net
> Subject: RE: brake drums and shock oil
>
>
> Jim :
>
> I checked both my manuals, they don't list a maximum drum oversize, nor do
>
> they advise turning the drums.
> IMO, if you have a specific problem (pulsating pedal, badly scored drum,
> etc.), you should probably replace the drums. Otherwise, don't turn them.
>
> Most people will tell you that not turning them will shorten the life of
> the shoes, but I don't believe it. The shoes quickly conform to the
> surface of the drum, and unless the scoring is severe, use only a small
> fraction of the thickness of the shoe doing it. Shoes are a lot cheaper
> than drums !
>
> I'm still using an old bottle of Armstrong shock oil for my lever shocks.
> Seems like I got it from Whitney, but I haven't seen it in their catalog
> recently. Moss only wants $10/qt. Motorcycle shock oil would probably
> work fine (and is available in a wide variety of weights), but I haven't
> tried it yet.
>
> Randall
>
> On Tuesday, May 11, 1999 4:03 PM, James Luke [SMTP:jluke@unm.edu] wrote:
> >
> >
> > Hi all
> >
> > Can someone tell me what is the maximum diameter of the brake drums
> > on the TR4A? I went to have mine turned and they wont do it unless
> > they have the specs, which they cant find.
> >
> > Also, my lever shocks are pretty low on oil. What is the right thing
> > to fill them with? (hopefully not as hotly debated as dashpot oil)
> >
> > Jim
> > 66 TR4A
> >
> >
> >
>
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