Exceeding max front difference & 9-speed MTB / Road (in)compatibility
07-12-15 | 10:40 AM
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Exceeding max front difference & 9-speed MTB / Road (in)compatibility
I'm planning a new (first) bike build and it's going to be a do-everything bike likely a conversion of an existing hybrid to drop bar with somewhat customised gearing. I've got two questions...
1) I've read elsewhere that Shimano 9 speed MTB FDs are compatible with road shifters. Does that mean my Sora 3503 triple STI can shift a current generation 9-speed Shimano mountain triple FD (say Altus M370)?
2) The front chainset I've in mind is 26-36-48 which means a 22T difference. The Sora 3500 GS RD has a specified max front difference of 20T - should I expect a catastrophic crash or just minor rubbing?
1) I've read elsewhere that Shimano 9 speed MTB FDs are compatible with road shifters. Does that mean my Sora 3503 triple STI can shift a current generation 9-speed Shimano mountain triple FD (say Altus M370)?
2) The front chainset I've in mind is 26-36-48 which means a 22T difference. The Sora 3500 GS RD has a specified max front difference of 20T - should I expect a catastrophic crash or just minor rubbing?
07-12-15 | 10:57 AM
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Joined: Aug 2005
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From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
No, Shimano 9-speed MTB rear derailleurs are compatible with road STI shifters. MTB front derailleurs are not compatible with road STI shifters.
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