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When riding with the Shimano 72 or the 80, did you notice any drag? Also thanks for the resource, Starbike.
Rear Derailleur Chorus Ultegra 6500, long cage
Shifters Chorus Ultegra 6500
Brakes Chorus Ultegra 6500
Seatpost Chorus Ritchey
Hubs Chorus Ultegra 6500
This approach has a couple of problems. First, if you narrow the hub, the axle will probably stick out past the dropout faces and the qr skewer will not tighten properly. You will have to shorten the axle by the amount of the spacer you remove. Second, narrowing the hub will require redishing the rim and will increase tha amount of dish.
If the frame has 126 mm dropouts and you want to use a 130 mm hub, just squeeze it in or cold set the frame. If the frame has 120 mm dropouts, find another bike to use.
The bike itself is a steel frame with Reynolds 531 and with Campy dropouts. Its a 1984. I have no idea about widening the rear end but it sounds kind of risky and so i think i will most likely use contemporary parts.
How can i tell the right sizes for wheels. hubs, cassettes?
I have a Co-Motion Mocha Tandem with 26” wheels. How does this effect gearing? Assuming the same gear combination how would it differ from a 700 wheel while climbing up hill? BTW mine has 52-39-30 front and 11-28 rear.
Be careful. If you have too big a difference between the big ring and the granny; if the chain is short enough for the granny gear it may be too short for the big ring. If you see what I mean. I
I've ridden in the Rockies and only used a 24x23 low gear. Never needed the 24x28 lowest gear. It did not hurt me.Not sure where you rode in the Rockies, but I will say that the route that the OP is talking about has much steeper climbs than anything I saw in the Rockies on the Trans America.