Cervelo R2.5

Discuss light weight issues concerning road bikes & parts.
PNuT
Posts: 1332
Joined: Thu Sep 04, 2003 6:33 pm

by PNuT

Briwilk wrote:As for the seat position, I agree with the consensus and I plan to eventually go with a lighter zero off-set post. This is the post that came with the frameset so I’m just making due for now. As someone mentioned previously, I have a short femur relative to my overall leg length so it just something I have had to deal with on all my bikes.

As for the frame size, I’m 5’11’’ and the frame is a 56 cm. I have gone back and forth on flipping the stem, however, I climb in the Colorado Mountains about 90% of the time and simply prefer a more upright position when climbing. If I lived in Florida, I would probably ride with the stem flipped the other way with no discomfort.

As for weight, it is just under 15 lbs as pictured. Keep in mind that this is with a seat that I can stand to ride on for 5 plus hours and 220 gram tires which offer the durability I need for every day riding. Change out the seat, seat post and tires and it would be right at 14lbs.

Hope this helps.


it sounds like you are happy with your bike to me :D

by Weenie


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ultimobici
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by ultimobici

PNuT wrote:erm, can someone explain how a frame can be too long & too small to me please :?

If you are 6' but have overly long legs (36"), you may find that some stock frames may be right for leg length but too long for your torso length.
If they want an OCLV a 58 would initially be right size for a 6 footer, but because of the leg/torso ratio the saddle would be higher and the stem need to be shorter than normal. This would mean that extra spacers would be needed and the handling would be a little twitchier due to the stem length. On a bike with a carbon steerer the extra spacers would not be ideal.
So before buying your dream frame, invest in a proper fitting. Then see what allows you to achieve this position. I know that there are several dream bikes that I can't consider due to the geometry they have.

fdegrove
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by fdegrove

Hi,

I know that there are several dream bikes that I can't consider due to the geometry they have.


Exactly....
Don't forget either that starting with a smallish frame a "bigger" bike can be built.
Too big a frame and there's little you can do to make it fit.
Should you try, it most certainly won't end up in a "visually" pleasing bike either and I'd still be convinced it won't fit anyhow.

Ciao, :wink:
Being a snob is an expensive hobby.

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ultimobici
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by ultimobici

fdegrove wrote:Hi,

Don't forget either that starting with a smallish frame a "bigger" bike can be built.
Still won't necessarily work as seat angles change and if stem is too long steering becomes slow due to the tiller effect. Not to mention the effect it has on descending due to the weight distribution being more front-biased.
Get the right frame size - END OF STORY :wink:

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