Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 29
  1. #1
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    56,088
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)

    TT bike sizing...

    I hopped on a TT bike at my LBS today - a $3500 Cervelo model - and much to my surprise it seemed to fit me very well. That struck me as a bit odd, because this was a 54cm bike, and I ride a 56cm road bike (my Ibis is actually 57mm). If anything this bike might have been a touch too large, but my impression was that I would be able to dial it in with an allen wrench in about 15 mins. Nice bike by the way.

    Is that typical? Would a 56cm road bike guy often fit on a 54cm TT bike? Or does that vary completely between manufacturers.

    Finally, if I haul this rig out on the group rides I do am I condemning myself to Fred Hell? I don't know if I would actually do it, but once I buy the thing I'd like to get very comfortable with the bike's handling?

    Slap a pair of Zipps on that TT bike and it would be one very fast bicycle. But that TT position is going to take a lot of training to get used to.

  2. #2
    Senior Member
    Join Date
    Apr 2006
    Location
    Albuquerque, NM
    Posts
    2,957
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by patentcad
    Is that typical? Would a 56cm road bike guy often fit on a 54cm TT bike? Or does that vary completely between manufacturers.
    The way Cervelo sizes their bikes, most people end up one size smaller on a Cervelo than most other brands. Within Cervelo, though, if the 54 cm TT bike is right for you, you'ld probably end up on a 54 cm road bike as well.

  3. #3
    Burning Matches. ElJamoquio's Avatar
    Join Date
    Jan 2006
    Location
    San Jose, CA
    My Bikes
    Motobecane Le Champion SL, Cervelo P2SL
    Posts
    9,663
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by patentcad
    Finally, if I haul this rig out on the group rides I do am I condemning myself to Fred Hell? I don't know if I would actually do it, but once I buy the thing I'd like to get very comfortable with the bike's handling?
    Hmm... new TT rider on aerobars in group ride...

    No dice, Pcaddy.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

    Bikeforums 'Group Buy': Kinlin Rims, Sapim/DT Spokes, Formula/Bitex Hubs


    "The only good race pace is suicide pace, and today looks like a good day to die."
    -Steve Prefontaine

  4. #4
    Shoebomber Dick Rhee's Avatar
    Join Date
    Dec 2005
    Location
    Seattle, WA
    My Bikes
    2008 Canyon CF Pro w/ Chorus, 2005 Moots Vamoots w/ Ultegra, 1988 Cannondale commuter
    Posts
    1,071
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Like you, my coworker went from a 56 Cannondale to a 54 Cervelo Tri bike. I don't know if it's because of Cervelo's sizing, or if it's because tri/tt bikes fit differently, seing as though you're so much farther forward on those frames.

    As far as where to ride it? Personally I wouldn't want to take a bike like that on group rides, but my coworker has been using his Cervelo to commute to work and back 3 times a week to get used to riding in the new position.

  5. #5
    Senior Member Talewinds's Avatar
    Join Date
    Oct 2005
    My Bikes
    (2) 2004 Trek 1500, Team Colors:2004 Cannondale Ironman w/ Renn and Zipp: 2005 Kestrel Talon SL: 2001 GT Agressor: 2001 Schwinn Moab: 2001 Specialized S-Works M4 Festina Team Bike: 2002 Pinarello Prince: 1980 Schwinn Voyageur 11.8
    Posts
    1,154
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    People often ride smaller framed TT rigs than their road bikes.

  6. #6
    Texas Fight! UT_Dude's Avatar
    Join Date
    Oct 2006
    Location
    Austin, TX
    Posts
    2,023
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    2cm smaller is about right for a TT bike. My TT bike (a Cervelo) is actually the same size as my Tarmac, but the measurements are different, and they're both dialed in right..
    T E X A S F I G H T !
    http://www.chriscollins.org

  7. #7
    Royal Grand Exalted Pooba smoke's Avatar
    Join Date
    Feb 2005
    Location
    Eight Miles High
    My Bikes
    Time VXR ProTeam, Look 695, Pinarello Paris Carbon, Ridley Dean, Time ZXRS
    Posts
    1,362
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Talewinds
    People often ride smaller framed TT rigs than their road bikes.
    +1 my Time is a 53, my Cervelo TT bike is a 51. don't take it on a group ride. do go out on your own to work on the handling and get comfortable on it
    'In the end they will lay their freedom at our feet and say to us, "Make us your slaves, but feed us." '

    -Fyodor Dostoevsky's Grand Inquisitor

  8. #8
    Edificating dmotoguy's Avatar
    Join Date
    Aug 2005
    Location
    boise idaho
    My Bikes
    2005 Specialized Tarmac Comp, Steyr Clubman, Motobecane Phantom Cross Uno, Cannondale Caad9, IRO bffgss
    Posts
    2,441
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    just tell them you are practicing for a TTT.
    Ultimate Cat -o- Meter
    X-x0x-x-X - 40%

  9. #9
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    56,088
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    I wouldn't dream of taking a TT bike on a group ride until I had many solo hours to get comfortable with the bike. Not in a zillion years. I won't even attempt it until I'm smooth and confident on the bike. Which won't be until I purchase such a bicycle. Which is still in the hemming and hawing pre-fifteen threads on BF about it stage.

    This is only a pre-Pcad's Thinking About Buying a TT Bike Thread. But the Cervelos were nice bikes. Whatever. Like my LBS shop pal Rich said, 'once you get over $3K, none of it's crap.'

  10. #10
    cmh
    cmh is offline
    Senior Member
    Join Date
    Jul 2005
    Location
    Portland, OR
    Posts
    2,264
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    TT bikes are welcome on the group rides that I do, although it is a small group of usually 6-12 riders. What is generally not welcome is for riders to ride in the aero position when they are not on the front. I know nothing about sizing TT bikes, but I have read in various forums that people often ride a TT bike 1 or 2 cm smaller than their road bike. I am sure that Cervelo is a killer bike. I am looking forward to many threads contemplating its purchase.

  11. #11
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    56,088
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    http://www.cervelo.com/bikes.aspx?bike=P2C2007

    It's the P2C. The good news is the MSRP on the 2007 model is down to $3K even from $3500 last year (I may have been looking at a 2006 bike). Hopefully I can buy this bike for $2600 or so brand new. Cdale is introducing a new all carbon bike too. But there were fit adjustability aspects of the Cervelo that appealed to me. Also looked mega-aero and had a nice component mix. A P2C with Zipp 404's could even make Pcad a little faster.

    I would get it in Blow Me Blue of course.

  12. #12
    Ink-Stained Wretch pinky's Avatar
    Join Date
    Jun 2003
    Location
    Holyoke, MA
    Posts
    1,731
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just make sure you get fitted for the Cervelo properly. The angles don't change through the sizes which generally isn't too big a problem, but something to be aware of. Second thing is figuring out your position before you buy (on a bike not guestimating on the forum). I ride a 54cm top tube road bike (C-dale) but ended up on TT rig with a 50cm TT, and a scary amount of saddle to bar drop.

  13. #13
    Senior Member
    Join Date
    Sep 2005
    Location
    Dallas, TX
    Posts
    293
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Right now I'm on an old 58cm Trek road bike(because it was given to me, it's probably a bit big). I should probably be on a 56cm. I bought a new TT bike for triathlons and ended up on a 52cm QR Kilo. Its a nice bike and fits real good surprisingly. The 54 Cervelo was a bit too big for me. I think I have long legs and a short torso. Just be sure you get a good fit before you buy.

  14. #14
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    56,088
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    I ride a 56cm Cannondale Six13, fits me like a glove. I'm looking at a used 54cm Slice Six13 style TT bike. In the shop the 54cm TT bikes from Cervelo and Cdale really did seem about right, but it's hard to know since I've not really had the experience I have on a road bike. I may just buy this 54cm bike used (the price is certainly right) and see if I can get it to fit. If not I can re-sell it. I can buy this bike for $2200 with cheesy wheels. The new ones with Zipps retail for $5500, even with a discount, after tax I'd be laying out close to $5K.

    No wonder so much bike schwag gets purchased on eBay.

    I'm 5'11", longish legs, short torso. The Cdale TT bike has a short 53.5cm top tube. But that might not matter so much on a TT bike. My concern would be getting the handlebars high enough to get comfy on the bike given the small frame size.

    What are the odds this sizing will work out for me? Anybody want to hazard a guess based on all that? I'd bet it would work...

  15. #15
    Senior Member Talewinds's Avatar
    Join Date
    Oct 2005
    My Bikes
    (2) 2004 Trek 1500, Team Colors:2004 Cannondale Ironman w/ Renn and Zipp: 2005 Kestrel Talon SL: 2001 GT Agressor: 2001 Schwinn Moab: 2001 Specialized S-Works M4 Festina Team Bike: 2002 Pinarello Prince: 1980 Schwinn Voyageur 11.8
    Posts
    1,154
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It actually sounds just about right to me.

  16. #16
    Ink-Stained Wretch pinky's Avatar
    Join Date
    Jun 2003
    Location
    Holyoke, MA
    Posts
    1,731
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Well I don't think "comfy" is really what to be expected. I know 'dale generally reccomends going a size down for their TT bikes (so the 54cm fits), though given your geriatric old man status I'd be concerned with your flexability, but that's something a steep mtb stem could solve.

  17. #17
    Senior Member
    Join Date
    Jul 2006
    Posts
    1,085
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    People typically ride ~1 cm shorter TT in a time trial bike, and a slightly shorter stem, if your not used to riding a TT bike you wont really know what size feels right. much like a 6' tall person used to riding a mtn bike might thing a 54cm road bike is comfortable when it probably isnt.

    I would pay attention to Top tube lengths as bike sizes typically talk about the seat tube.
    Cat 1 o-meter 33%

  18. #18
    Senior Member Stallionforce's Avatar
    Join Date
    Apr 2005
    Location
    Victoria
    My Bikes
    05 Norco CRR Team Carbon Dura Ace, 06 Cervelo P2C TT Dura Ace, 88 Olmo Steelie w. Campy Mirage, Cypress CX w. 105
    Posts
    1,372
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My advice would be to size by the top tube. I ride a 58 top tube on the road, but a 56 on my TT bike. I would have even preferred a 54 to really get my seat in a legal position.

  19. #19
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    56,088
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by pinky
    Well I don't think "comfy" is really what to be expected. I know 'dale generally reccomends going a size down for their TT bikes (so the 54cm fits), though given your geriatric old man status I'd be concerned with your flexability, but that's something a steep mtb stem could solve.
    Yeah, but at least I can still spell right.

    Yep, that's a lot of votes for the 54cm TT size all things considered. Both bikes in the shop (the Cervelo and the Cdale) felt about right in that size. I think I'll give it a whirl.

  20. #20
    Eternal Cat3 Rookie branman1986's Avatar
    Join Date
    Jul 2006
    Location
    Atlanta, GA
    My Bikes
    2004 Giant TCR2 Composite & 2006 Fuji Touring
    Posts
    1,169
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm 63-64cm with road bikes, and I'm on a 61cm TT bike

  21. #21
    . botto's Avatar
    Join Date
    Jan 2006
    Posts
    40,335
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ElJamoquio
    Hmm... new TT rider on aerobars in group ride...

    No dice, Pcaddy.
    correct.

  22. #22
    Ink-Stained Wretch pinky's Avatar
    Join Date
    Jun 2003
    Location
    Holyoke, MA
    Posts
    1,731
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Damn the drunken posting....

    old man.

  23. #23
    Senior Member
    Join Date
    Dec 2004
    Location
    Athens, Ohio
    My Bikes
    Custom Custom Custom
    Posts
    5,104
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    my boss rides a 60cm Cannondale and rides a 54cm cannondale TT bike.

    I also size down on my TT bike. I ride a 54 Trek but my road rig is a custom 59TT x 52ST

  24. #24
    Texas Fight! UT_Dude's Avatar
    Join Date
    Oct 2006
    Location
    Austin, TX
    Posts
    2,023
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can drop a size, which seems to be the norm, but I didn't on mine to get stretched out.



    That lets me sit farther forward in the saddle, and move to the front of the aero bars (im actually sitting a bit too far back in this pic).

    Thus, keeping the size lets me both get in a position to both produce power (I actually have higher power on my TT bike than my road bike), and get aero with arms/back/etc.
    T E X A S F I G H T !
    http://www.chriscollins.org

  25. #25
    Senior Member garysol1's Avatar
    Join Date
    Apr 2005
    Location
    Avon , Ohio
    Posts
    9,844
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dmotoguy
    just tell them you are practicing for a TTT.
    TTT?

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •