I've just put new studs in the rear wheel hub, and when I fit a drum to it (also new if it helps) it is a really tight fit, so that I can't fully fit it by hand (the parts aren't on the car either). The drums are stepped BTW.
I have no idea how I'd get the drum off the hub if the rear arm assembly was all together, so while it's apart I want to work on the fit.

The shank on the new studs is 0.2mm bigger than the old ones (old ones are 9.90mm diameter), and the holes on the new drums appear to be an average of 0.4mm smaller than an old drum, but is seems as though the new holes are tapered slightly, so exact measurement is difficult.

So, can I safely open the holes up a smidgen (tech term) to make assembly easier (bearing in mind the stud/bearing carrier has a locating diameter onto the drum), or should I just leave them and organise a swear jar for when it comes to getting it all apart later?

Thanks.


PS. Dr Mini, I know minis are imperial, not that evil metric system, I only had a metric vernier handy!

I assume you backed off the brake adjustments before trying to fit the new drum Otherwise, I think you may have the wrong studs They are definately in square

I wouldnt be taking metal from the mounting holes except maybe to debur sharp edges ever so slightly.

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"Show me the Mini!"

All I have is the drum, the studs and the bearing carrier.
No other parts are assembled. All I'm doing is trying to get the drum to fit over
the studs smoothly before I attach it all to the arm.
The studs are square.

I'd drill out the holes, using a press drill preferably & it seems 1/16" extra should solve your problem
As the drum is fixed to the hub with the countersunk long thread PK screws (you can also use Allen bolts) and the wheel nuts will eventually lock it up pretty solid anyway, I can't forsee any problems

_________________
1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

Sixteenth inch sounds a bit, I was thinking 1/32nd tops (0.5mm).

I'm just checking for any safety issues before I get carried away and do something.

yep Harles, 1/32 (minimum variance) is wot I meant sorry

_________________
1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.