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Fitting Your Bike Are you confused about how you should fit a bike to your particular body dimensions? Have you been reading, found the terms Merxx or French Fit, and don’t know what you need? Every style of riding is different- in how you fit the bike to you, and the sizing of the bike itself. It’s more than just measuring your height, reach and inseam. With the help of Bike Fitting, you’ll be able to find the right fit for your frame size, style of riding, and your particular dimensions. Here ya’ go…..the location for everything fit related.

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Old 02-28-14, 09:27 AM   #1
Tankbullock
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Van Nicholas website recommended 50cm, But the 54cm feels right.

I inputted my vital stats into VN frame sizing section on their site. And at 5'7" with my slightly short inseam and longer torso I got a 50cm advisory frame size. When I went to my LBS they had a 54cm in stock that I could demo, then order a 50cm if I liked it etc.

I felt right at home on the 54cm to be honest and am a bit concerned the 50 or even 52cm might be a bit undersized. Should you go for what you feel comfy on or on recommendations from the maker?

The thing that's harder to fathom is that 54cm isn't the actual measurement, it must be an effective sizing due to sloping top tube, so I can't really tell whether VN frames just come up small? I bought a Genesis Croix de Fer in 52cm as the 54cm felt too big height and length wise. This Ti bike (ventus model) feels much more like the 52cm Genesis in terms of stretch etc.

Bit baffled as there doesn't seem to be a concrete way of gauging height comparatively between manufacturers. One persons 54cm might not be another if that makes sense?
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Old 02-28-14, 07:46 PM   #2
gsa103
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Originally Posted by Tankbullock View Post
Bit baffled as there doesn't seem to be a concrete way of gauging height comparatively between manufacturers. One persons 54cm might not be another if that makes sense?
Research stack and reach, which are the measurements designed to provide effective comparisons. At the very least, effective top tube is a key measurement. Its easy to raise and lower a seat to accomodate leg length, but the same isn't true of torso length. Short legs and a long torso will likely want a larger frame than long legs and short torso.

54cm frame size doesn't seem crazy for a medium height rider with short legs. Most people can find a decent fit across a moderate range of frames. Its possible that 54cm is at the upper end of your size range.
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Old 03-01-14, 12:30 AM   #3
Tankbullock
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Thanks very much for the reply. I've been doing some reading on here and it does seem that my body type (long torso, short inseam) is a compromise between the stand over clearance and the right stretch to the bars. I had a small Planet X road bike once (50-52cm effective) and that felt cramped whilst riding. I probably could have done a 52cm but I'm certain a 50cm (as recomended on VN website) would have been to small for my long bod.
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Old 03-01-14, 12:42 AM   #4
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stem extension choices adjust for reach .. EZ to change.

pick 'size'* for standover clearance .. buy a different stem for that long torso.

thats seat tube length ..

if sloping top tube where you actually straddle the frame will be a bit above that .

find out the stand over height in the middle of the top tube.. ..

Last edited by fietsbob; 03-01-14 at 12:48 AM.
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