Colnago C60 sizing yet again

[mike s]

Question, I currently ride a 57 C50, 120mm stem slammed usually with 5mm spacer on top to spare. Geo charts show a 52s or a 57, was told a 52s was at least a 6 month wait for US, and the 57 they couldn’t give me a time frame. Now it seems that 54s seem to be all over the place. Has any one made it work that’s similar situation?

[Spaghetti Legs]

Is that a Colnago 57, meaning top tube somewhere around 55?

I will answer without any personal experience of the C60 but I think Colnago sizing runs similar across their models through the years. I ride 56 and 57 cm traditional geometry bikes. I have a C40 that is a 56.5 top tube. For years I rode a 52 slope E1, technically too small, but rode it comfortably with a long stem. That has an ETT of 55. I replaced the E1 with a 54s EPS (I was shopping for C59, same geo, but got a good deal on the EPS). It fits comfortably and rides great, but it feels much different, I think because of the mongo head tube. I think one day I might replace it with a traditional geometry like the C40.

Bottom line I think if you ride a 55 cm frame , a 54s will be big for you. Edit -⎌Also if you’re buying new, you should hold out for the right size

[mike s]

Correct top tube is 55...the reach is the same, stack is different by 17mm for the C60 52s and 54s.

[GonaSovereign]

54s = 58 (C-T) in traditional. You'll be slightly longer in the top tube. Not ideal of the 57 fits you perfectly.

[binxnyrwarrsoul]

Isn't a 52S the same (effective) top tube as a 56 traditional?

[huck*this]

Isn't a 52S the same (effective) top tube as a 56 traditional?


52s TT 55 54s TT 56.5

https://www.bikebug.com/images/C60%20Geomtery.jpg

[wallymann]

Question, I currently ride a 57 C50, 120mm stem slammed usually with 5mm spacer on top to spare. Geo charts show a 52s or a 57, was told a 52s was at least a 6 month wait for US, and the 57 they couldn’t give me a time frame. Now it seems that 54s seem to be all over the place. Has any one made it work that’s similar situation?

based on the geo charts (http://brown-snout.com/cycling/tech/_ColnagoGeometryReference.pdf) a C60 in 52s has a 5mm shorter TT than a C50 in 57. so you'd run +5mm stem on the C60 to get the same effective reach. if you need to buy now i'd much rather go longer -- to a 125mm stem than a shorter 115mm, but thats me. it might be tricky to find a stem with the exact reach/drop specs you need tho.