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TT frame

Posted: Mon Feb 13, 2017 3:47 am
by bpe
I am finally in the market for a TT specific bike. I know aero trumps weight, at theist for a typical TT course, but am looking for an aero frame that is still lightweight. Can anybody help me sort through all the possibilities?
Thanks,
Brian

TT frame

Posted: Mon Feb 13, 2017 3:47 am
by Weenie

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Re: TT frame

Posted: Mon Feb 13, 2017 6:27 pm
by tilf
Do you need UCI legal or any other governing body legality?

Re: TT frame

Posted: Mon Feb 13, 2017 7:38 pm
by bpe
tilf wrote:Do you need UCI legal or any other governing body legality?


I would like it to be UCI legal, but I didn't think anything with a TT groupset/aero wheels and added power meter would still be that low, no matter what the frame weight was. Weight is easy to add.

Thanks,
Brian

Re: TT frame

Posted: Mon Feb 13, 2017 7:48 pm
by Kurets
TT bikes are commonly sold in Triathlon and UCI-legal versions. The triathlon models being more commonly available.
Being UCI legal has implications on frame shape, saddle position, bars, addons.

Re: TT frame

Posted: Mon Feb 13, 2017 8:36 pm
by bpe
I guess I always assume weight on this forum. I do want the bike to meet UCI requirements.

Re: TT frame

Posted: Mon Feb 13, 2017 8:52 pm
by allenpg
bpe wrote:I am finally in the market for a TT specific bike. I know aero trumps weight, at theist for a typical TT course, but am looking for an aero frame that is still lightweight. Can anybody help me sort through all the possibilities?
Thanks,
Brian


My Cervelo P2 tips the scales at around 17 lbs with tubulars. You could get lighter with the P3 (same frame, just a lighter fork). Still one of the most aero frames out there.

Re: TT frame

Posted: Mon Feb 13, 2017 9:24 pm
by stormur
BH Aerolight.

Re: TT frame

Posted: Mon Feb 13, 2017 10:04 pm
by wingguy
Argon E-117 Tri+ is a very light frame. Also the 2015 and 2016 Cannondale Slice Himod is extremely light for a TT bike, but not on the UCI approved frame list.

Re: TT frame

Posted: Wed Feb 15, 2017 12:43 am
by tilf
As stated, the UCI legality isn't weight so much as design of the frame and other components. http://www.uci.ch/mm/Document/News/Rule ... nglish.PDF

Page 8 and 9 get into the details of what the UCI requires (its much more detailed than the 3:1 ratio for tubing commonly cited).

Outside of the UCI you'd see things like the Cervelo P5X, Falco V, Diamondback Andean, and Dimond bikes. Beam type bike, magnetic covers of brakes, extreme tubing shapes, etc...

Within UCI there are several that are light already mentioned, as well as the Scott Plasma. If you care about UCI legality you probably care about winning -- and thus should look for the fastest bike more than the lightest bike. In that case, consider ponying up for some aero testing at A2, Faster, LA Velodrome, etc...

Re: TT frame

Posted: Wed Feb 15, 2017 1:46 pm
by Rudi
You might want to look at some of the older, but still respected frames like the classic Cervelo P3.

I have nothing to base this on but when you look at say the P5 (not the P5X) in comparison, the P5 looks like it has a lot more material on it.

Slowtwitch post from 2014 suggests the P5 frame and fork is over 2kg:
http://forum.slowtwitch.com/forum/Slowt ... _P5068254/

Edit: Quick search for the older P3 suggests frame around 1260g compared to the 1668g for the P5 above.

Re: TT frame

Posted: Wed Feb 15, 2017 1:46 pm
by Weenie

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Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



Re: TT frame

Posted: Wed Feb 15, 2017 1:58 pm
by wingguy
Rudi wrote:You might want to look at some of the older, but still respected frames like the classic Cervelo P3.

I have nothing to base this on but when you look at say the P5 (not the P5X) in comparison, the P5 looks like it has a lot more material on it.

Sure, but that's not so much to do with older or newer, but with conventional vs full integrated (brakes, fairings, bayonet fork, stem / bar system etc).

So the classic P3 or the current P3 are both lighter than the P5, the old E-116 or the new E-117 are both lighter than the E-119, the 2015/16 Slice is much lighter than the 2014 Slice RS...