Bicycle Mechanics - Is my Shimano Nexus Inter-8 dead?

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View Full Version : Is my Shimano Nexus Inter-8 dead?

totoroben
09-28-09, 12:11 AM
Hello Bikeforums,
I rode my bike home a couple nights ago and realized I couldn't access gears 5-8 on my bicycle. The shifter would work, and I could see that the cable was pulling. When I shifted to 5 the pedals would lock up. I shifted through all the gears many times on the way home and determined that gears 1-4 were fine. Has anyone had this problem before? Is this problem able to be fixed? Will I ever be happy again?

K6-III
09-28-09, 02:37 AM
An additional stage kicks in for gears 1-4. Seems like its not withdrawing correctly to get you to gear 5.

Without taking it apart to take a look, it'd be tough to say what's wrong.
totoroben
09-28-09, 09:05 AM
oh well. I guess I will have to take it somewhere to get looked at.

totoroben
09-28-09, 09:10 AM
So K6-III, what model hub has worked best for you in terms of durability? I may have to buy a new one if this thing is shot.
Mr IGH
09-28-09, 09:54 AM
I'd pull the guts and soak them in a solvent (paint thinner), allow the dry, then soak in ATF before re-installing the guts. Maybe it'll work, maybe not. The newer 8R36 is the Nexus to buy, has Alfine 501 guts and better sealing than the older Nexus hubs.
K6-III
09-28-09, 01:05 PM
The new Nexus/Alfine, Sram S7, and Sram i-Motion 9 are all excellent choices for large wheels. If you don't mind figuring out how to get a smaller chainring, the Sturmey 8 speed (w) series is also on the table.
Bianchigirll
09-28-09, 03:44 PM
how old is your bike/setup? did the cable or something else just slip?