73.5deg seat angle, F-mech rated 61-66deg?

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5 posts & 4 voices | Started 2 years ago by alexonabike | Latest reply from alexonabike

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alexonabike - Member

Will this be a problem?

Kaffenback frame but new F-mech (Shimano R770) says its for 61-66deg SA.

Currently have a 105 which (as far as I can tell) has the same 61-66 deg recommendation. Will it be a problem?

Posted 2 years ago #
Mister P - Member

Are you changing to flat bar shifters? That mech is designed to do the same job as a 105 but with flat bar shifters instead of STIs.

Posted 2 years ago #
rolfharris - Blocked

Something in the back of my brain says that this is actually about angle to seatstays, but that's probably wrong.

Posted 2 years ago #
brant - Member

No - the 61-66deg angle is the angle between the chainstays and seat tube, not the seat tube angle.

Kaffenbacks (when I was there) have a 63.59deg angle between chainstay and seat tube so you will be fine.

Posted 2 years ago #
alexonabike - Member

Yup flat bar 10sp shifters (overpriced- YUP!)

Cheers all - yup brant - its one of 'yours'.

Posted 2 years ago #

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