Author Topic: Between frame sizes  (Read 562 times)

Between frame sizes
« on: 23 April, 2021, 06:21:56 pm »
Hi folks,
It's been ages since I purchased a new bike and here's my dilemna...
My current bike is an old Specialized S-Works roubaix 58cm frame and fits ace...
I'm toying with buying a kinesis titanium frame and the size guide indicates a XXL is indicated as I'm 6' 2''
So, I'm between sizes... Do I go for an XL which is similar to what I cycle now or a XXL as indicated by the size guide.

Any thoughts, suggestions etc most welcome. (I'm so far out from a Kinesis dealer)

Cheers, Doo
I dunno why anybody's doing this!

citoyen

  • Occasionally rides a bike
Between frame sizes
« Reply #1 on: 23 April, 2021, 06:31:42 pm »
Personally, in that position, I would err on the smaller side. You can adjust upwards by fitting a slightly longer stem if necessary.

Not always so easy to adjust downwards if your frame is too big.

ETA: the key measurements to look for in the spec are stack and reach. “Frame size” isn’t always helpful.
"The future's all yours, you lousy bicycles."

cygnet

  • I'm part of the association
Re: Between frame sizes
« Reply #2 on: 23 April, 2021, 06:50:03 pm »
What's wrong with the SWorks Roubaix?

I've found the geometry to be slightly longer and taller than my other bikes, so quite possibly the sizing guide is correct.

Reasonably Inconsiderate

Geriatricdolan

Re: Between frame sizes
« Reply #3 on: 23 April, 2021, 06:52:32 pm »
Get the smaller, always

Re: Between frame sizes
« Reply #4 on: 23 April, 2021, 07:16:22 pm »
Have you had a play on this?
https://geometrygeeks.bike/

If you like what you have now, I'd choose the closest, though there's a few things that can catch you out, so you do need care to ensure you are comparing like with like.

citoyen

  • Occasionally rides a bike
Re: Between frame sizes
« Reply #5 on: 23 April, 2021, 07:30:31 pm »
What's wrong with the SWorks Roubaix?

What’s wrong with n+1? ;)
"The future's all yours, you lousy bicycles."

cygnet

  • I'm part of the association
Re: Between frame sizes
« Reply #6 on: 23 April, 2021, 07:39:27 pm »
What's wrong with the SWorks Roubaix?

What’s wrong with n+1? ;)

Nothing, if you want to downgrade ;)
Reasonably Inconsiderate

Re: Between frame sizes
« Reply #7 on: 23 April, 2021, 07:59:09 pm »
Hi Doo, I would look at measuring the length of the wheelbase on your current bike &  not to go any shorter, wheelbase is important for comfort & handling if you're a taller guy. Smaller frames have shorter top tubes & less wheelbase, OK you can use a longer stem/seat post & even shove the seat back but the bike will feel more lively & less comfortable plus you'll look too big for your bike, Kinesis frames have fairly long chainstays & decent a fork rake, most manufacturers have their geometry available.

Re: Between frame sizes
« Reply #8 on: 23 April, 2021, 10:06:29 pm »
Hi Doo, I would look at measuring the length of the wheelbase on your current bike &  not to go any shorter, wheelbase is important for comfort & handling if you're a taller guy. Smaller frames have shorter top tubes & less wheelbase, OK you can use a longer stem/seat post & even shove the seat back but the bike will feel more lively & less comfortable plus you'll look too big for your bike, Kinesis frames have fairly long chainstays & decent a fork rake, most manufacturers have their geometry available.

My Aithein has 405mm stays and 43mm fork rake;)

On the sizing front, I’m 185cm (short 6’ 1”) so fall between L and XL for most. I tend to size down because my inside leg is 88cm (34.5”) so shorter body... The Aithein is XL/59cm, is long and quite tall so I use a -17 degree 90mm stem with a 10mm spacer to get the fit I want. On a large I would use a 110mm 6 degree stem, and possibly fewer spacers.

Mike

Re: Between frame sizes
« Reply #9 on: 25 April, 2021, 10:31:42 am »
Thanks All,

Nothing 'wrong' with the roubaix - I love it. It's just that it's very old and I want a bike now that can fit wider tyres and has disc brakes.

Thanks for all the responses

Doo:)
I dunno why anybody's doing this!