Super Galaxy Sizing

[oddnumber]

Afternoon all, I'd be really grateful for some sizing advice if possible please! I've seen a Dawes Super Galaxy on Facebook Marketplace (with older horizontal top tube geometry) which looks pretty much ideal. The chap selling listed the size as 22.5/23". I'm unfamiliar with old(er)school sizing - how suitable would that be for someone of 5'9ish?

I'd really appreciate any advice, thank you

 

[hamster]

Far too big, unless you are all legs. I would think you would need something like 21-21.5".

 

[oddnumber]

Ahh, OK - as I feared. Thanks Hamster. It looked slightly too long in the pics but thought I'd check.

Much appreciated.

 

[non-fixie]

Measure you cycling inseam. Multiply by 0.7. That should give you a decent indication for the frame size (seat tube, measured centre-to-top) you need for a bike like a Galaxy.

 

[oddnumber]

Measure you cycling inseam. Multiply by 0.7. That should give you a decent indication for the frame size (seat tube, measured centre-to-top) you need for a bike like a Galaxy.

Thank you! Where does the top tube (or ETT, at least) come into it?

 

[non-fixie]

Thank you! Where does the top tube (or ETT, at least) come into it?

At the risk of opening a can of worms ...

I am sure you will be able to find all sorts of ways to measure your body and determine the perfect theoretical top tube length, but unless your torso and arms are extremely long or short in relation to your inseam, you'll be able to make do with whatever comes with the seat tube in your size.

Depending on whether you want to be more stretched out or more upright, playing with different bar stem lengths should enable you to find a fit that works for you on most bikes.

The Dawes Galaxy was made for touring, so I would want comfort to take precedence over other requirements. In my case - I am not particularly flexible anymore - that means a limited saddle-to-bar drop, so my touring frames are all close to the upper limit of my size range.

I just measured my own Galaxy (a bare frame from the early eighties that I haven't built up yet) and it has a 64.5cm (25 1/2 inch?) seat tube (center-to-top) and a 58cm top tube (center-to-center). That should work well for me.

My inseam, BTW, is 89cm/35" and this Roy Thame is very comfy. It is a 64cm frame, with also a 58cm top tube:

 

[Blacktopdisciple]

Im six feet two inches tall and ride a 25 1/2 inch Galaxy.

 

[oddnumber]

At the risk of opening a can of worms ...

I am sure you will be able to find all sorts of ways to measure your body and determine the perfect theoretical top tube length, but unless your torso and arms are extremely long or short in relation to your inseam, you'll be able to make do with whatever comes with the seat tube in your size.

Depending on whether you want to be more stretched out or more upright, playing with different bar stem lengths should enable you to find a fit that works for you on most bikes.

The Dawes Galaxy was made for touring, so I would want comfort to take precedence over other requirements. In my case - I am not particularly flexible anymore - that means a limited saddle-to-bar drop, so my touring frames are all close to the upper limit of my size range.

I just measured my own Galaxy (a bare frame from the early eighties that I haven't built up yet) and it has a 64.5cm (25 1/2 inch?) seat tube (center-to-top) and a 58cm top tube (center-to-center). That should work well for me.

My inseam, BTW, is 89cm/35" and this Roy Thame is very comfy. It is a 64cm frame, with also a 58cm top tube:

Thank you, I really appreciate your explanation.

My fixed gear and my gravel bike are both 55cm ETT (and both have 'compact' geometry). If I opted for a 21 - 21.5" frame in a Galaxy or something with traditional geometry, the ETT is somewhat longer. I guess that's where stem length comes into play.