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180mm cranks on Cervelo Soloist Team

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180mm cranks on Cervelo Soloist Team

Old 03-13-09, 04:18 AM
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chummdizzle
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180mm cranks on Cervelo Soloist Team

I'm thinking about moving up to 180mm cranks (I have a 37 inch inseam). I was wondering if there will be any problems running them on a Cervelo Soloist team 56cm frame? ground clearance? toe rub?

I'm going to go with the new SRAM Rival OCT they are supposed to be super stiff although a bit heavy.
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Old 03-13-09, 05:28 AM
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You have a 37" inseam and are riding a 56cm frame? o_0;

Do you have the proportions of a velociraptor?
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Old 03-13-09, 08:07 AM
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Lets see I have a 34" inseam and ride mostly 58 cm bikes. You need a much bigger frame first. Second with 180s on a 56 frame any time you are going around a corner at speed pedaling you are going to hit the inside pedal on the ground. Roger
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Old 03-13-09, 08:25 AM
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Originally Posted by rhenning View Post
Lets see I have a 34" inseam and ride mostly 58 cm bikes. You need a much bigger frame first. Second with 180s on a 56 frame any time you are going around a corner at speed pedaling you are going to hit the inside pedal on the ground. Roger
Yep, I have a 33" inseam and I ride 56 or 57 cm frames. The OP must have a foot of seatpost exposed!

That said, the bottom bracket height is pretty constant and nearly independent of frame size so a 180 mm crank is no more likely to hit the ground on a given model 56 cm frame than on a 62 cm frame of the same model.
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Old 03-13-09, 01:04 PM
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Well I'm only 5"11, so while my inseam is 37 inches my torso is quite short. I've tried larger frames and the reach is just far too long. I would have to use a very short stem to be anywhere near comfortable.

Even on the 56 with a 110mm stem I feel a bit stretched out.
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Old 03-13-09, 02:10 PM
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Like others have mentioned, the BB is typically about the same distance from the ground regardless of frame size, since it is based on BB drop, and axle height (which is based on wheel/tire size), so it doesn't typically matter what size bike you are riding.

Pedal strike may be increased slightly, I am not sure. YOu will have to decide on your own there, but unless you are riding a fixie, you always have the option of coasting through corner sharp enough for this to be an issue.

Toe overlap may be increased a little, but even people with very small frames realize that toe overlap is only an issue at very low speed since once you are rolling more than a few miles per hour, virtually all of your maneuvering is done by leaning the bike.

I would say to try it, and see.
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Old 03-13-09, 02:15 PM
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Originally Posted by Little Darwin View Post
Like others have mentioned, the BB is typically about the same distance from the ground regardless of frame size, since it is based on BB drop, and axle height (which is based on wheel/tire size), so it doesn't typically matter what size bike you are riding.

Pedal strike may be increased slightly, I am not sure. YOu will have to decide on your own there, but unless you are riding a fixie, you always have the option of coasting through corner sharp enough for this to be an issue.

Toe overlap may be increased a little, but even people with very small frames realize that toe overlap is only an issue at very low speed since once you are rolling more than a few miles per hour, virtually all of your maneuvering is done by leaning the bike.

I would say to try it, and see.
ok thanks. I looked at the Cervelo website and the BB drop is the same through all sizes, so ground clearance would be the same. So the only issue is the toe overlap, which like you said isn't really a big deal.

Thanks for the advice, I'm going to try em out
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