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Frame flex... TCR vs. LeMond(7 posts)

Frame flex... TCR vs. LeMondJBergland
Mar 11, 2003 7:16 AM
I recently got a new (2002) Giant TCR. My old bike is a LeMond Zurich, 99'. I swapped the Ultegra (from the LeMond) with the 105 (from the TCR). I bought the TCR specifically for racing... light, stiff, and cheap. I did the final tuning on the TCR yesterday and put it in the trainer for a workout later on today. Not being able to resist the 'calls' from a new bike, I slipped a pair of shoes on and rode for a little while last night. After 30 minutes, I wonder if I bought the wrong bike/frame!!

Everything worked fine... nice crisp shifts, the 'new' sounding hummmmmm, the look of new bar tape, etc. I decided to hammer a little and see how this new 'racer' felt. With just a couple turns of the crank I could tell the front drl. Need some adjusting. I get back on the bike, hammer, more adjusting. Again... same thing. I was only able to spend 10-15 minutes working on this, but I'm concerned this is mostly frame flex?? My LeMond is steel (853) and I've always considered it somewhat flexible. However, compared to my TCR, the LeMond feels like a pure racer!!

Any thoughts?? TCR more flexible than a steel LeMond?? I kept the 105 BB in the TCR... would that be a source of any significant flex??

Take Care!!
Steel is real, my friend. You're our new poster-child. nmSpunout
Mar 11, 2003 8:15 AM
Ya, ya, ya...JBergland
Mar 11, 2003 8:32 AM
... I know 'steel is real'. I have a Waterford track bike that is VERY stiff!! But a LeMond Zurich vs. a compact alum. bike/frame?? I would think the TRC would be MUCH stiffer!!
re: Frame flex... TCR vs. LeMondMR_GRUMPY
Mar 11, 2003 9:58 AM
I've got a TCR and it does flex just a little. I'm pushing 200 Lbs, so I would expect it to. I've never had a problem with too much flex though. In fact, it feels a lot like a steel bike. Because flex is not a good thing in an aluminum bike ( Fatigue = Frame death ), I've switched it over to my RR. bike. I've got a new Gunnar with big 1 1/4" steel tubes for my crit bike now. (3 1/2 Lbs.)
re: Frame flex... TCR alum. vs. carbonBergMann
Mar 11, 2003 3:45 PM
Is there anyone out there who's ridden both?
Is there an appreciable difference in stiffness in terms of BB deflection while riding?
re: Maybe you've heard of ...sprinter
Mar 11, 2003 4:29 PM
a team called Once? The frames are stiff enough for them, so they should be stiff enough for you. I don't mean to sound sarcastic but this whole frame stiffness thing is way over-rated. I did about 60 crits on a large TCR last year and while it isn't the stiffest bike around it's definitely stiff enough. Don't worry, besides, does the guy with the stiffest bike always win?
Easy thar trigger...StupidLight
Mar 11, 2003 6:01 PM
Maybe you've heard that the Once boys get their own custom sizes, geometries, and wraps?
Mine was merely a question of genuine curiosity regarding the relative differences between the aluminum and composite TCR -- the one does cost about twice as much as the other.
If you re-read my post, you'll note that I did not pull a George Bush Sr. and assign values to degrees of stiffness ("stiff, goooood ... flexy, baaaad")
_you_ did that!
I'm actually quite fond of stupid-light, flexy and comfortable components.
Some folks on this board need to chill just a tad on the 'tude factor...