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Bike frame sizes

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Manicminer:

--- Quote from: "gords" ---
--- Quote from: "M Thomas" ---it looks like I need a 26" frame with 20" wheels
--- End quote ---

Shouldn't that be the other way round? :?
--- End quote ---


My mistake. :oops:
I need a 22" frame and 26" wheels (just checked).

Dave:
A lot of bikes are now sold as small medium large but if its in inches for your size gords i would say 18' 19 inch frame MTB with 26inch wheels i ride a 18 inch GT fits just right.

Bush Tucker Man:
Frame sizes are still as far as I know (or ought to be) either
Centre to Centre
Centre to Top

That is to say, the centre line of the Bottom Bracket spindle (the axle in the shell at the Seat Tube & Down Tube) to the top  (or centre-line) of the Top-Tube (cross-bar for the non-cyclists amongst you :wink:)

If it's a sloping Top-Tube, ie Giant, consult the shop
My Pace had a sloping Top-Tube, but it measured as a 16" C-C measurement & had a ideal length Top-Tube.

On the road I usually ride a 54.5cm C-C, that's what my titanium Dyna-Tech is.

For MTB racing I used the same position as on the road (even down to handle-bar height)

Cyclo-Cross, I lowered the saddle by 1cm, it helped for running dismounts & remounting

Seat height ought to be set by the knee-angle, practically straight at full extension (without rocking the pelvis when pedalling

One thing that is equally important as the Seat-Tube length, is the saddle set-back.
Ideally for the most efficient position, the kneecap (with cranks hoizontal) ought to fall a couple of MM's behind the pedal spindle.

I wish I could justify a Trek Madone to SWMBO, it'd give me an incentive to start riding again :D  :wink:

littlepow:
Best to get a slightly smaller frame if you intend to take it off road, this will allow a greater freedom of movement and reduce the eye-watering experiences from not being compress your legs to absorb landings.

If it helps I'm 6'2" and use 16" Marin full suspension and a 17" Trek front suspension.

Good luck and happy riding, oh and walkers still won't like!

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