HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Articles FAQ Contact About




Post new topic Reply to topic  [ 24 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Thu Sep 05, 2013 10:41 pm 
Offline
User avatar

Joined: Thu Jan 20, 2005 1:05 am
Posts: 27
Location: Seattle, Washington
I have a set of Hutchinson RT1 carbon tubeless wheels (mfg by Corima) with a shimano 10 speed cassette body.

Image


I converted to 11speed Di2 & still want to use these wheels. I contacted Corima & they don’t offer an 11 speed cassette body for these hubs.

With access to a machine shop I was able to convert them, here’s how

Notes of interest……….

10 speed cassette body has a taller (deeper) spline on the inner 8 cogs.

Image


The 11 speed cassette has uniform (short) splines & only fits over the shorter splines. It physically would not fit regardless of the width of the addition of the 11th cog.

The first step was to even out the splines on the cassette body. Since it’s aluminum it’s fairly straight forward to turn it on a lathe. Now the 11 speed cogs fit all the way onto the cassette body.

Next I measured the distance from the cassette lock ring to the axle lock nut to gauge the distance needed to clear the dropout. I used a Shimano WH-9000 C24 TL to gauge all the necessary measurements

Here’s the tricky part...... once done the cassette is no longer compatible with any other wheel set.

I machined the flange on the cassette spider of the last (biggest) cog to sit further on to the cassette body. This allows all 11 cogs to fit.

Image

There was ample clearance with the spokes & no interference with the hub. I can’t say if this will work on all hubs out there.

I now have an 11 speed carbon tubeless wheel set.

I can swap between wheels & (other than brake pad change) it doesn’t require any derailleur adjustment.

_________________
We're talking about flying down a mountain with just a bit of carbon and two skinny tires between ass and asphalt................

2010 S Works SL3 Tarmac, 9070 Di2, Hutchinson RT1 Carbon Tubeless
2010 S Works Epic, Sram XX, Carbon Roval Control SL


Top
 Profile  
 
PostPosted: Thu Sep 05, 2013 10:52 pm 
Offline
User avatar

Joined: Fri Feb 11, 2011 3:04 am
Posts: 2385
Location: Mississippi
Nice work!

Could have just gotten a Campy 11 freehub though and ran a Campy 11 cassette.

But nice work none the less!

_________________
Cervelo R3

http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=125962


Top
 Profile  
 
Posted: Thu Sep 05, 2013 10:52 pm 


Top
  
 
PostPosted: Thu Sep 05, 2013 11:02 pm 
Offline

Joined: Tue Sep 11, 2012 6:07 pm
Posts: 668
Location: The Taint of the USA!
nice job. lots of work, but i understand your desire to keep your wheelset. I'm in the same boat, but i contacted Reynolds for my DV3K's, and they confirmed that they do make an 11-speed freehub for 2011 and later DV3k's, Assaults, Attacks and Strikes. Best of all, no redish is required for the wheel to work.

_________________
2014 Crockett (under construction)
2013 Madone 5, Superfly
2012 SpeedConcept 7, Cobia


Top
 Profile  
 
PostPosted: Thu Sep 05, 2013 11:17 pm 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 1804
Location: Santa Cruz, California, USA
You could use that cassette on a real 11sp hub by adding spacers.

How much did you take off the back of the cassette?


Top
 Profile  
 
PostPosted: Thu Sep 05, 2013 11:31 pm 
Offline
User avatar

Joined: Thu Jan 20, 2005 1:05 am
Posts: 27
Location: Seattle, Washington
eric wrote:
You could use that cassette on a real 11sp hub by adding spacers.

How much did you take off the back of the cassette?


True, I machined off approximately 1mm from the back of the spider.

With my old 7900 10 speed cassette I added a 1mm spacer to this hub so I could swap between wheels without trimming the rear derailleur.

So you are correct I could just add a spacer & use them on 11 speed hubs.

btompkins0112 wrote:
Nice work!

Could have just gotten a Campy 11 freehub though and ran a Campy 11 cassette.

But nice work none the less!


In 2009 Corima only offered Campy 10 or Shimano/Sram 10 speed cassette body for these hubs. The current generation Corima hubs are 11 speed compatible.

_________________
We're talking about flying down a mountain with just a bit of carbon and two skinny tires between ass and asphalt................

2010 S Works SL3 Tarmac, 9070 Di2, Hutchinson RT1 Carbon Tubeless
2010 S Works Epic, Sram XX, Carbon Roval Control SL


Top
 Profile  
 
PostPosted: Fri Sep 06, 2013 12:14 am 
Offline
User avatar

Joined: Fri Feb 11, 2011 3:04 am
Posts: 2385
Location: Mississippi
Ah! Gotcha..... :beerchug:

_________________
Cervelo R3

http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=125962


Top
 Profile  
 
PostPosted: Fri Sep 06, 2013 12:28 am 
Offline

Joined: Mon Apr 11, 2011 3:16 pm
Posts: 166
sled driver wrote:
10 speed cassette body has a taller (deeper) spline on the inner 8 cogs.

Image



Eh?

sled driver wrote:
The 11 speed cassette has uniform (short) splines & only fits over the shorter splines. It physically would not fit regardless of the width of the addition of the 11th cog.


Eh?

sled driver wrote:
The first step was to even out the splines on the cassette body. Since it’s aluminum it’s fairly straight forward to turn it on a lathe. Now the 11 speed cogs fit all the way onto the cassette body.


Eh?

sled driver wrote:
Here’s the tricky part...... once done the cassette is no longer compatible with any other wheel set.

I machined the flange on the cassette spider of the last (biggest) cog to sit further on to the cassette body. This allows all 11 cogs to fit.


Haha, what? So you machined BOTH parts, effectively knackering both, when you could have just machined the freebody.


Top
 Profile  
 
PostPosted: Fri Sep 06, 2013 4:32 am 
Offline

Joined: Wed Jun 08, 2011 6:08 am
Posts: 124
It sounds like you only wanted to use the lathe. Should have put a 9 speed freehub body on there then milled it to take the 11spd cassette.


Top
 Profile  
 
PostPosted: Sun Sep 08, 2013 6:32 pm 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 1804
Location: Santa Cruz, California, USA
OwenJames wrote:
you could have just machined the freebody.


How would you machine the freehub to increase the depth? You have to machine the inner part of the splines so the cassette will seat all the way.
I can't think of way to machine down in there without cutting farther into the flange than the amount required for the 11sp cassette.


Top
 Profile  
 
PostPosted: Mon Sep 09, 2013 9:19 am 
Offline
User avatar

Joined: Wed Jul 13, 2005 10:51 am
Posts: 1051
Location: Sydney, Australia
Great work. If people think you're "ruining" parts then pffffft. Better to machine a freewheel body than ditch a whole wheel set you like.
I like it.

_________________
You can't be a real country unless you have a beer and an airline. It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.
-- Frank Zappa


Top
 Profile  
 
PostPosted: Fri Sep 13, 2013 3:26 pm 
Offline
User avatar

Joined: Thu Jan 20, 2005 1:05 am
Posts: 27
Location: Seattle, Washington
OwenJames wrote:

Haha, what? So you machined BOTH parts, effectively knackering both, when you could have just machined the freebody.


I could not machine the grooves any deeper in the cassette body. The 1st picture of the hub shows the actual cassette body. The 2nd pic was taken off the web to emphasize the step in the splines on another type cassette body.

While I wanted to upgrade to 11 speed, I was not to happy with the fact all my wheels were now obsolete I could purchase (& did) a 11 speed Dura Ace C 24 Tubeless wheelset, no one made a 11 speed all carbon 50mm Tubeless wheelset.

_________________
We're talking about flying down a mountain with just a bit of carbon and two skinny tires between ass and asphalt................

2010 S Works SL3 Tarmac, 9070 Di2, Hutchinson RT1 Carbon Tubeless
2010 S Works Epic, Sram XX, Carbon Roval Control SL


Top
 Profile  
 
PostPosted: Fri Sep 13, 2013 3:48 pm 
Offline

Joined: Sun May 19, 2013 1:01 am
Posts: 39
Now you need a machinist to change/replace cassettes. :)


Top
 Profile  
 
PostPosted: Fri Sep 13, 2013 9:57 pm 
Offline

Joined: Wed Aug 07, 2013 10:31 am
Posts: 50
Location: Brighton, UK
This is where Campag triumphs.


Top
 Profile  
 
PostPosted: Tue Sep 17, 2013 11:11 am 
Offline
Formerly known as CAADHEAD
User avatar

Joined: Sun Dec 21, 2003 8:32 pm
Posts: 1444
Location: WALES,UK
I'm interested in this solution, but a little confused. When you say you machined 1mm of material off the inside of the last sprocket on the rear cassette, are you talking about Dura Ace and Ultegra that have composite carriers? Would it be possible to machine the same amount of material off a Sram 11 speed cassette to get the same result? I have two sets of Lightweight Gen 1 Shimano spec wheel sets that I'd love to use 11 speed with and this option sounds promising as long as once machined the cassette does not foul the spokes?

_________________
Ti or dye!

The Weenie formally known as CAADHEAD


Top
 Profile  
 
Posted: Tue Sep 17, 2013 11:11 am 


Top
  
 
PostPosted: Tue Sep 17, 2013 7:19 pm 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 1804
Location: Santa Cruz, California, USA
I think it'd be a bad idea to take 1mm off the back of a Red cassete. That aluminium sheet pressed in to the back of the cassette is not very thick.
Their lower range cassettes have carriers like Shimano which would have more room for material removal.

Don't Lightweights use someone else's hub parts, like DT?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 24 posts ] 
Go to page 1, 2  Next


Who is online

Users browsing this forum: Google [Bot], jeffy, Majestic-12 [Bot], MattSoutherden, Method01, TonyMM and 51 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Converting 10 to 11 speed cassette

[ Go to page: 1, 2 ]

in Road

itsacarr

19

1970

Wed May 14, 2014 10:46 am

Guerdi View the latest post

There are no new unread posts for this topic. where to buy di2 10 speed rear mech or do i really need one

in Road

deegee

11

875

Thu Nov 27, 2014 11:42 am

amey View the latest post

This topic is locked, you cannot edit posts or make further replies. Shimano/SRAM 11 Speed wheels on Campy 11 Speed

in Road

dvincere

1

580

Mon Jan 27, 2014 3:51 pm

Butcher View the latest post

There are no new unread posts for this topic. Sram red aero 10 speed derailleur and new 11 speed shifters

in Road

Daley400

8

1365

Fri May 09, 2014 8:31 pm

aaric View the latest post

There are no new unread posts for this topic. Lightest 10 speed shimano rear mech to take 32T?

[ Go to page: 1, 2 ]

in Road

Paul8v

19

852

Mon Jan 13, 2014 2:26 pm

HillRPete View the latest post


It is currently Sat Dec 20, 2014 8:39 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB