HammerSchmidt with internal hub gear

[TyranT]

Has anyone tried using a HammerSchmidt with a nexus 8 speed internal hub gear?
Im thinking of doing it and was wandering if anyone else has already.

[delirian]

sorry cant remember his user name but i know on the knooly forum theres a guy who is running a schmid and a shimano alfine hub and it seems to work ok.

[sambs827]

Two words:

Chainstay
Extention

[bear]

You still definitely need some sort of spring loaded chain tensioner to accmodate frame movement, but an externally simpler drivetrain would be very cool IMO. ;^)

[kenbentit]

Will a Nexus hub even hold up to real off road riding? I thought that was more for comfort bikes and such. Rohloff works, but costs as much as the HS (or more....)

[TyranT]

hmmm its like $1300 for hub and $800 for the hammerschmidt
plus new disc rotors

is there any cheaper alternative that wont just get trashed

[lelebebbel]

Some internal gear hubs including the SRAM and Rohloff have limitations for the input gearing to limit maximum torque.

The Hammerschmidt's low gear is a 1:1 drive with a 22 or 24t chainring.

The lowest input gearing Rohloff allows for the 14 speed hub is 2.375:1 - that means with a 22t Hammerschmidt, you would have to run a 9t cog or smaller, or you lose your warranty.
With SRAM hubs, it seems to be either 1.75:1 or 2:1, so you'd have to run 11t cog on the hub if you want to combine it with the Hammerschmidt.
Not sure if Shimano has published a limit.

[NorKal]

I say try it and report back to us if it works or doesn't work.

[TyranT]

sram should make a hub gear for the Hammerschmidt

[Monkeybike]

the alfine will do fine. it will take the pounding. I am currently using one on my xc bike, but that same hub was on a Dh rig for over a year and it never gave me a problem.