I know its not rocket science but i guess i have time to think and even made spreadsheet


https://docs.google.com/spreadsheet/...xnRUE&hl=en_US



showing you my old Scott speadster (It felt smaller ) Geometry and The 56 and 58 Surly , also Competitve cyclist French and Eddy Fit and Wrench Science to compare.
So my conclusion seems to be that Head Tube On 56 and 58 are 19 mm apart (that doest bother me). Now effective top tube seems to be closer between French Fit and 56 Surly and 10mm longer thatn my Scott ( meaning more comfy and shorter stem) , and i guess thats the most important thing. Now with my 840 mm inseam 812 on the 56 Surly givems me better clearence of 28 mm compare to 10mm on the 58 so one more Plus for the 56 But Seat tube C-C and C-T seems to be closer between 58 Surly and French Fit than 56 Surly and the French Fit but a lot of people said thats not the most important thing . So i might go with the 56 cm having one more month to think. Most of the people my height and inseam seems to have the 56 as well.

Intresting i asket Surly and they actually responded also favoring the 56 cm. Here is the email




Thanks for your interest in our bikes!

The 56cm would be a better choice based on standover alone but your point about riding a bigger frame for touring/randoneuring is also valid. Likely either will work provided you find the right stem length to achieve your desired reach in accordance to your chosen handlebar. A correct top tube measurement trumps "frame size" in my humble opinion.

Please check out our "Spew" article on fit: http://surlybikes.com/blog/spew/spew_bike_fit/. You should also read Sheldon Brown's take on the topic if you are looking for more comprehensive view: http://sheldonbrown.com/frame-sizing.html.

If you have a bike you feel comfortable on already, grab a tape measure and compare it's measurements to the geometry charts on our web page http://surlybikes.com/frames/.Make sure you measure your frame in the same way that we have measured ours to achieve relevant numbers.

We try to shy away from recommendations because of the high probability that we would be wrong. Too many variables and too many variations in people of similar height makes it statistically improbable that we would be "right" more than half of the time.

Best Regards,

Trevor F Clayton
Surly Bicycles
- Sales/CS -
(952)941-9391 x1401
Trevor@SurlyBikes.com
www.Surlybikes.com



Hope this helps other people . Whats everybody thinking .