Q Factor Question

[Sscarich]

I have read many discussions of Q factor, but I remain confused. I ride about
four bikes with some frequency, all with significantly different Q factor. I
don't seem to have any problems with knee pain or anything else. Also, these
cranks vary in length from 170mm to 181mm (Cook Bros).

Here's my question: I want to put a road double crank (currently on my Merlin
road bike) on my Ritchey mountain bike (currently has Cook Bros triple),
because I want to use the bike as a road commuter and don't need the triple.
The road double is a Ritchey Cross with 34/50 rings. I am planning on putting
the Ritchey crank right on the Phil BB currently on the Ritchey bike, so the
inner ring will clear the chainstay.

Can I anticipate chainline problems, or does anyone see any obvious problem
with my plan.

TIA,

Steve Scarich

 

[jim beam]

Sscarich wrote:
> I have read many discussions of Q factor, but I remain confused. I ride about
> four bikes with some frequency, all with significantly different Q factor. I
> don't seem to have any problems with knee pain or anything else. Also, these
> cranks vary in length from 170mm to 181mm (Cook Bros).
>
> Here's my question: I want to put a road double crank (currently on my Merlin
> road bike) on my Ritchey mountain bike (currently has Cook Bros triple),
> because I want to use the bike as a road commuter and don't need the triple.
> The road double is a Ritchey Cross with 34/50 rings. I am planning on putting
> the Ritchey crank right on the Phil BB currently on the Ritchey bike, so the
> inner ring will clear the chainstay.
>
> Can I anticipate chainline problems, or does anyone see any obvious problem
> with my plan.
>
> TIA,
>
> Steve Scarich

chain line is likely less of an issue than the cranks striking the rear
stays. most mtb's, are much wider than road bikes in this area to
accommodate larger tires, with those made of aluminum being the widest
of all. if it fits, great, but don't be surprised if it doesn't.