Bike sizing for weird shaped guy

secretsam
secretsam Posts: 5,120
edited December 2012 in Road beginners
I admit it

I'm an odd shape

5'9" ish, or 173cm according to my passport

Inseam, according to my measure using my Mum's Bible (don't ask) is 77cm, so I've short legs for my height (and a mahoosive head :twisted: )

My current bike is a CAAD8 54, which is pretty much 'square' and has a standover of nearly 80cm according to the technical details, and there's not much clearance between 'me' and it when I standover.

So what size should I go for? I guess I need a short seat tube (low standover) but what about top tube? The CAAD8 gives me a 54.5, which was much more comfy when I dropped in a 90mm rather than 100mm stem.

It's all a flippin' mystery, I've also got an old Spesh Sirrus in a large (56) which fits OK, possibly a bit big.

Sigh...poor, weird me...

It's just a hill. Get over it.