Hi all ,

Have nearly finished saving up for a 700cc disc trucker so I’m now starting to think about a frame size . I was hoping a few people here might read through my reasoning to see if I have missed something .Based on my measuremens I reckon that I’m a candidate for either a 60 or 62 . I had a look at the Surly owners Size spreadsheet but I found the range of sizes that people my height were riding kind of confusing , from 58 s right up to 64 s ! Please bear in mind that I am going for bars at least level with the saddle for an upright comfortable touring position .

My measurements ;
Height – 6 foot 2
PBh – 94 cm
Saddle height (PBH – 10 ) 84 cm approx

My height comes from mostly leg and a long neck and head . I have the torso of a much shorter person . My arms are not particularly short .

From the Surly site the 62 cm has a standover height of 866.5mm so with my PBH of 940mm I think I should be fine for standover on both bikes .

When it comes to saddle height (84cm ) I’m thinking the 62 wins as with the 60 I may not be able to get the bars up that high . I also have to figure in that the higher I bring the stem up the steerer tube the shorter the reach will become due to the angle of the headtube . This could be a good thing if I go 62cm and a bad thing If I go 60 . I will specify to the shop that the steerer tube be left uncut to allow me to tweak .


As well as the above reasoning I also used a frame fit formula that I found in an older thread .

It’s ; Basic bike size=.67 of PBH so for me that ‘s .67 x 94 = 62.98 ( round up to a 63cm frame )

Then ;

“Top tube length modifier is a ratio of overall height divided by true inseam height. If it is greater than 2.2 then a longer top tube (maybe larger bike) is indicated. If it is less than 2.0 then a shorter top tube (smaller bike?) is indicated. This measurement corrects for long or short legs/short or long torso.”
So in my case ; 187.96/94 =1.9

So that puts me on a 62cm frame I guess . Any thoughts ?