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Choosing proper frame size(5 posts)

Choosing proper frame sizeJammin
Aug 12, 2001 2:01 PM
I am buying a 02 Trek 2300 and the dealer only had a 54cm in stock. I am a guy, 5'6" and they set me up on a bike stand, set the seat, measured me and said the 54cm is perfect for me. At another bike shop there was a 52cm and they said it is perfect for me! What gives? I guess the dealer just want to sell what they have in stock?

The 54cm felt fine and I could pull both wheels off the ground 1" (with 2" tall Nike cross trainers on), the front hub was mostly conceled by the handle bar in a riding position and it felt pretty good.
Should the top bar measurement be taken in bare feet/socks??

I rode the 52cm bike and the top bar was lower and more comfortable at a stop or a possible quick get off, but I could see 3/4 of the front hub in front of the handle bars with my hands on the top of the brake rests.

Using the online measurement guide, I came up with needing a 53cm bike.

Considering the option of a shorter or longer steering stem, would it be wiser to go with a slightly larger frame or slightly smaller frame?? Seems to me a smaller frame is going to be lighter and stiffer/less forgiving, and a larger frame is going to be more relaxed and possibly smoother??

I am re-entering the road bike world after many years of mountain biking, so any comments or advice are appreciated.
re: Choosing proper frame sizeK2bldr
Aug 12, 2001 2:22 PM
If you have really done your proper sizing homework and feel confident that you are coming up with a mathematic recomendation of 53(you didn't say c-c or c-t so consider that), then buy the bike that feels best to you. Never discount how it feels to you over a "formula". Personally, I prefer to er on the large side if there is to and error at all. It generally equates to more comfort. Good luck.
re: Choosing proper frame sizePeterRider
Aug 12, 2001 2:24 PM
I'm no professional and ride a trek 5200 just for fun, so maybe my advice is a piece of s**t. Anyway, I would just say "ride the one you were feeling better on". If you were feeling good on both it will probably not make much difference.

I am between 5'9 and 5'10 and got a 56cm, the frame is slightly too large, so I put the seat post in the wrong position and the saddle as much forward as I could and the bike just rides wonderful.... I'm not even sure if next time I want to get a 54cm !!

If at the bike shop they checked on the Klein table, the size of the Klein frames is different and you can't take that table as a basis for buying a 2300.

How much are you going to pay for that 2300 ?
re: Choosing proper frame sizeJammin
Aug 13, 2001 2:17 AM
I got my 2300 for $1,705.00 out the door...and it is a 02 model. Why didn't you like your 2200? I know there is alot of differences between what you got and the 02 2300. The big thing is no more Rolf wheels ;-] I think the vertical height of the 52 is perfect, and the stretch to the bars on the 54 is perfect, so I need to figure it out real quick so they can order it.
Size-riteKerry Irons
Aug 12, 2001 5:39 PM
Try these sizing calculators to figure things out. Personal preference will shift the results of any calculator, but they give better results than are available in many bike shops (perhaps including the two you visited).

http://www.bsn.com/cycling/ergobike.html
http://www.coloradocyclist.com/BikeFit/index.cfm
http://www.sheldonbrown.com/harart-frames.html
http://www.electriciti.com/~bikelane/sizing.html
http://www.rivendellbicycles.com/frameinfo/Frame_Sizing.htm
http://www.peterwhitecycles.com/fitting.htm