Shimano BR-IM50-R rear roller brake vs Sturmey X-FD.
- And the winner is ...........
*****The Shimano Roller Brake with a Total Knock Out in the fourth month!******
When I replaced my ancient (but still working) BR-IM41 roller brake
with a used IM50 and put a new X-FD on the front five months ago I was
expecting a long epic battle of the hub brakes that would take decades
What I got was more like one of those Mike Tyson fights that was over
before people even sat down, with the Sturmey completely busted before
the Shimano had even hit its first 6 month overhaul.
The Sturmey was weak from the start, but that was expected with the
break-in period. About two months in something changed in the hub and
I had to take in a lot of slack from the brake cable. The braking
became irregular and the hub would drag slightly even with the brake
cable disconnected. I suspect that this was when the end cap came
loose, which you can see here:
One month ago, while riding in a heavy rain, the hub completely quit
and went squishy. When I got home and pened it up I found the broken
arm and the loose end cap, as well as standing water inside the hub.
At that point I cleaned the whole hub out with rubbing alcohol and
sealed it back up with the locknuts as tight as possible without
stripping the threads. I put it back on the bike without the brake
attached and rode it while I waited to get in touch with Sturmey.
A month later Sturmey sent me a new hub. When I changed the brake
plate I found plenty of water inside the hub again:
The hub now works, but of course I am back to day one of break-in.
Anyone have any advice of accelerating break-in?
This wheel was supposed to be ready for a bike camping trip coming up in month.
> Anyone have any advice of accelerating break-in?Errm .. I didn't know the SA drum brakes needed a break-in! I just
> This wheel was supposed to be ready for a bike camping trip coming up in month.
use mine. I suppose maybe they don't brake so well in the first few
weeks, but I'm not one for fierce braking anyway.
Having said that, my rear brake is a 90mm one, so if I'm going down a
long hill (sometimes towing the trailer too), then that one takes most
of the braking load.
I've just fitted a brand new X-FDD on the front and didn't notice any
difference over the X-FD which it replaced. Maybe having 26" wheels
helps as well.