I am thinking of buying a Ridley Noah. I am 6'1" tall (184.2cm) and have a 34 inch (86.4cm) inseam.
Currently I have ridden a 56cm Cannondale Caad 9 frame. I typically use a 120mm stem.
Is there anybody out there with similar experience on Noahs who has a similar size to me as to advise which direction to go?
I like a more compact feel for whatever it's worth. However-I am concerned there will not be enough seat mast for me on a small frame. They say on the Ridley site the small frame are 700mm uncut from center of BB to top, I'm not sure how much wiggle room I would have with the seat hardware and spacers to get it where I need it to be. Currently I use 175 cranks and center of pedal axle to top of saddle is 94.5cm.
I would assume there is enough play there. But don't want to run too small or be hitting my toes on the front tire when I'm turning.

Looking for the wisdom of the group to help me. Anybody in the same boat?

You are close enough to me - I am 6'0", 35.4" PBH (although I only have 814mm between my saddle and seat) and fit a M Ridley perfectly (although mine are a Damocles and an Excal, not a Noah).

A S would be waay too small, dont you think?

I'm 5'6" and ride a small.. Excalibur that is, but the geometry is the same

That's why I'm asking. I stood over a small helium at a LBS and it felt pretty good. According to the sizing chart on Ridley's website. My inseam length is right on the cusp for what they advise for maximum length for a small.
What is "PBH"? I assume it's inseam?
https://data.ridley-bikes.com/sizes/sizes-en.pdf

Definitely not a small. Your legs are short, so your torso is long and the frame reach would be too short on the small. The head tube lengths on all sizes are on the tall side. Those wanting a racy fit might end up with no spacer and a 73 degree stem (just like the pros).

When comparing frames, compare the head tube length and BB drop to determine the difference in handlebar height range. Compare the TT length and the seat tube angle to figure the difference in reach, compared to what you are riding now. Each degree the STA is steeper adds about 1cm to the reach.

I'm 5'10" and ride a small Noah. I run a 120mm stem with a 6'' drop.

It would require about a 79cm saddle height to produce a 15cm drop with a 145mm head tube, even with a minimal 8mm headset, no spacers and 73 degree stem.

And?

And is your saddle height around 79cm or have you exaggereated your saddle to bar drop?

Nope my saddle height is just a tad under 79cm. My drop would be right at 6in give or take an 1/8th. I have a 32" inseam and extremely long arms for my size. I'm also quite flexible. BTW why would I exaggerate any of that..seems like a silly thing to call someone on. It's not like we are talking penis size...12.5" btw

And I thought Ron Jeremy wasn't a climber.

Having a third leg helps.

Well, that inseam must be a pants inseam, not a cycling inseam, otherwise the saddle height and inseam don't jive. A cycling inseam around 34 inches or 86 inseam would typically result in a saddle height around 76cm.

What this points out is that you have quite different proportions from the OP and your post was pretty much irrelevant.

If makes you feel better okay it was irrelevant.

I am 6'0" and my medium Noah fits me perfectly.

I'm 6'3" and recently went through the Retul fitting process with the intent of then taking those measurements and finding a frame that would really "fit". The result, Ridley Noah... XL size. Long legs, long arms and relatively short torso make fitting a bit of a challenge in my case. The results thus far are incredible. Have had the bike for a little over two weeks now and it's incredible... More importantly, though is the fact that the damn thing FITS RIGHT!!! Highly recommend going through the fit process before you select the frame first...

Let's revive this thread. I'm also looking at the ridley noah and I'm a bit confused about all these sizes. All of the calculators online give me results which seem way too big to me.
I'm 5'8.9" (175cm) with a little over 34" inseam (87cm) so a small would do the trick for me, right??

Grtz
Jonathan

Yes, a small should work.

I am 5'7" with a 32" inseam and I was riding a Scott CR1 Pro @ 54. I recently did a pro fit since I wanted a new Noah RS frame. After the fit the option was S or XS. While the small was closer to my Scott 54 the XS let me have more adjustment since I would not need to be all of the way back on the saddle rails. It did mean going with a longer stem but in the end both the fitter and I thought the XS would be a better option. I have about 200mi on the bike since then and the fit is perfect for me.

So you think I should go with the xs? That seems a bit small to me

Small (not xs) will fit you just fine.

Unfortunately, that response was confusing. The poster is NOT the same size as you are. He's shorter and so is his inseam. I have nearly identical proportions as stonecrd, and I'd pick an XS, but you shouldn't.