Go Back  Bike Forums > Bike Forums > Cyclocross and Gravelbiking (Recreational)
Reload this Page >

Ridley guys - sizing assistance

Notices
Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like : "Unbround Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Ridley guys - sizing assistance

Old 09-24-12, 12:19 PM
  #1  
dnfcx
Senior Member
Thread Starter
 
Join Date: Sep 2009
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ridley guys - sizing assistance

all

I am looking to move from my current Kona Major Jake to a Ridely x-ride.

My Major is a 56 and I'm running a 100mm stem. saddle height is 74cm. 6mm saddle tip to BB. 5cm drop to bars. im 5'10.5"

--

Being unable to get all of my kit on to dial a fit, Im looking to you all for a bit of assistance.

anybody have a suggestion on the size?

Im leaning toward the 52. With a setback post and a 120mm stem - I can get the cockpit set. Though I think Ill be seeing a bit of spacers on there.

the 54, when I look at the geo - looks like it will be more like a standard 57tt (the ht and seat tube angle really stretch it out)...

--

anyhow - enough of a ramble. what do you all say?
dnfcx is offline  
Old 09-24-12, 01:06 PM
  #2  
flargle
Senior Member
 
Join Date: Jul 2007
Posts: 2,119
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I think the 52 would be too small. 53.5cm TT?

I'm curious about your statement that HT stretches out the bike?
flargle is offline  
Old 09-24-12, 01:46 PM
  #3  
Andy_K 
Senior Member
 
Andy_K's Avatar
 
Join Date: Jan 2008
Location: Beaverton, OR
Posts: 13,152

Bikes: Yes

Mentioned: 384 Post(s)
Tagged: 0 Thread(s)
Quoted: 2268 Post(s)
Liked 943 Times in 478 Posts
Head tube angle has negligible effect on perceived top tube length. Seat tube angle does have an effect, but I think you have it backward. A 1 degree steeper seat tube angle effectively lengthens the top tube by about 1 cm because you have to move the seat back to get the same position relative to the bottom bracket. You didn't say what year Major Jake you have, but it looks like the 56cm in recent MJ's have a 73.7 degree seat tube angle, whereas the 54cm X-Ride has a 73 degree seat tube angle.

The biggest difference I see between the Ridley geometry and the Kona geometry is that Ridley favors a taller head tube for the same top tube length. The taller head tube also makes the reach to the bars feel shorter, though it's more difficult to quantify and more dependent on arm length than the seat tube angle effect.

The 'reach' measurement in the geometry is meant to give a seat-tube angle independent measure of how far the bars are from the saddle. The 56cm Major Jake and the 56cm X-Fire have the same reach. Stack (bb to head tube top difference) is about 20mm larger on the X-Fire. That's not a huge difference.

I'm 5'9" and ride a 54cm Major Jake (fits like the current 53). If I were going to buy and X-Ride, I'd be torn between the 54 and the 56, probably choosing the 54 for standover clearance.

I think 56 is probably the best bet for you.
__________________
My Bikes
Andy_K is offline  
Old 09-24-12, 01:48 PM
  #4  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,318 Times in 828 Posts
I simply Look for it on the google..
https://www.ridley-bikes.com/en/bikes...#tab-bike-info

their sizing is CtoC, not CtoT

Last edited by fietsbob; 09-24-12 at 02:01 PM.
fietsbob is offline  
Old 09-24-12, 04:54 PM
  #5  
dnfcx
Senior Member
Thread Starter
 
Join Date: Sep 2009
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ridley's size chart puts me square in the middle of the 52 and the 54 size-wise. a 56 would just be crazy big.
dnfcx is offline  
Old 10-17-12, 05:28 PM
  #6  
bo_vk
Junior Member
 
Join Date: Jun 2006
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by dnfcx View Post
Ridley's size chart puts me square in the middle of the 52 and the 54 size-wise. a 56 would just be crazy big.
So what was your final decision - did you get the bike?
bo_vk is offline  
Old 10-22-12, 10:44 AM
  #7  
dnfcx
Senior Member
Thread Starter
 
Join Date: Sep 2009
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
i did. I went with the 52.

With a set back on the seatpost and a 110 stem - Im sitting pretty.

I get a bit of toe overlap on tight turns (90 degree tight), but I turn really badly and tend to not lean enough. Yet another reason for me to improve!
dnfcx is offline  
Old 10-28-12, 09:52 PM
  #8  
bo_vk
Junior Member
 
Join Date: Jun 2006
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
could you share actual stand over height measured from the floor to the top of the top tube? I just got 54 Ridley and I measured 832 mm (as it came from the box) compared to 870 what Ridley claims. The rest of Ridley published geometry was accurate.
really interested in what you find!!
bo_vk is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jambon
Fitting Your Bike
4
05-12-15 06:18 AM
bikecrate
Road Cycling
9
05-21-12 08:35 AM
531phile
Framebuilders
5
02-05-11 10:54 AM
freedomrider1
Road Cycling
5
09-18-10 08:30 PM
Stickney
Road Cycling
5
07-30-10 08:35 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.