Retrobike Forum Index

It is currently Sun Dec 04, 2016 9:43 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 16 posts ]  Go to page 1, 2  Next
Author Message
PostPosted: Tue May 14, 2013 12:22 am 
Old School Hero

Joined: Sat Nov 10, 2012 1:03 am
Posts: 173
I have an 8spd Shimano XT FH-M737 Parralax hub and the free hub has lots of play and needs replacing. Will a Shimano FH-RM 30 be a simple swap or can anyone tell me which exact one I need, all help appreciated.

Oh yes and can anyone tell what width B.B was fitted on a 96 KONA Explosif using Sugino Mighty 900 cranks.

Cheers :D


Top
 Profile  
 
PostPosted: Tue May 14, 2013 10:00 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
Mighty 900s take a 110mm BB. They are some of the nicest cranks ever - lighter than XTR too!

Usually freehub bodies are interchangeable, however I recently came across differences in the bearing throat size - if it measures the same you should be fine.


Top
 Profile  
 
PostPosted: Tue May 14, 2013 11:25 pm 
Old School Hero

Joined: Sat Nov 10, 2012 1:03 am
Posts: 173
Many thanks for your post, I have confirmed it is a FH-RM30/XT 8 Spd free hub. Just bought one, only £13 :D

I didn't know my cranks were that highly regarded, they are light and strong and after 17 years use they still have logos in tact, can't be bad lolz. Fortunately my B.B is 108 mm and a very helpful guy in Halfords gave me a 2mm spacer for nothing today, making the 110mm width required. It was a project which once this part is ordered will be finished at last.

A few photo's and story of the build will be posted soon.


Cheers


Top
 Profile  
 
PostPosted: Tue May 14, 2013 11:47 pm 
Old School Grand Master
User avatar

Joined: Fri May 01, 2009 7:11 pm
Posts: 8479
Location: Fircombe.
Explosif Phil wrote:
Many thanks for your post, I have confirmed it is a FH-RM30/XT 8 Spd free hub. Just bought one, only £13 :D

I didn't know my cranks were that highly regarded, they are light and strong and after 17 years use they still have logos in tact, can't be bad lolz. Fortunately my B.B is 108 mm and a very helpful guy in Halfords gave me a 2mm spacer for nothing today, making the 110mm width required. It was a project which once this part is ordered will be finished at last.

A few photo's and story of the build will be posted soon.


Cheers
How does the spacer work?


Top
 Profile  
 
PostPosted: Tue May 14, 2013 11:55 pm 
Old School Hero

Joined: Sat Nov 10, 2012 1:03 am
Posts: 173
It sits between the B.B shell on the frame and the B.B locking ring adding the extra 2mm needed. So the axle will sit 2mm further to the right/crankside which will give the correct chain line and finally eliminate chain rub. Although it will be 2mm shorter on the left, that won't be noticeable when pedalling and avoids me having to buy yet another part. It started out as just a tyre and a cassette! At £300 I stopped counting and said I wanted it to be mechanically perfect and looking just as good lol


Last edited by Explosif Phil on Sat May 18, 2013 12:57 am, edited 2 times in total.

Top
 Profile  
 
PostPosted: Wed May 15, 2013 2:15 pm 
Old School Hero

Joined: Sat Nov 10, 2012 1:03 am
Posts: 173
I have just found out that a RM30 free hub is not the correct part. Although it is 8Spd it isn't compatible. Does anyone know for sure which free hub I do need and where I can get one from?


Top
 Profile  
 
PostPosted: Wed May 15, 2013 3:38 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Mar 13, 2009 7:19 pm
Posts: 3132
Location: Leeds, for ages!
ah, yes, the rm30 is different at the back, outy rather than inny, (absorb the technical vibe there) :)

Most shimano freehubs will fit from deore upwards.

I've got one of these put away for when the next m750 hub goes bang (known for it)

http://www.chainreactioncycles.com/Mode ... elID=88244

the freehub will fit. it may be necessary to experiment with spacer arrangements (like the one that sits behind freehub and hub shell). also if any of your cones are pitted and the new ones match, mores the better. Dust seals may be fine too or reuse your existing ones. like i say, some trial and error but these freehubs are fundamentally the same.

on the link LX565 is listed too. :wink:


Top
 Profile  
 
PostPosted: Wed May 15, 2013 3:57 pm 
Old School Hero

Joined: Sat Nov 10, 2012 1:03 am
Posts: 173
The splines on the M750 free hub are not the same as M737. Looking at Shimano's compatibility chart there is only an XTR and a XT part listed. Called a few bike shops and the UK Shimano importer but no one knows of a alternative. Looks like I am stuck.


Last edited by Explosif Phil on Sat May 18, 2013 12:57 am, edited 2 times in total.

Top
 Profile  
 
PostPosted: Wed May 15, 2013 4:19 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Mar 13, 2009 7:19 pm
Posts: 3132
Location: Leeds, for ages!
i see, i do recall m737 being dubbed as the 'awkward one'.

I reckon thats why i stick to certain things, knowing of their compatibility etc...

sorry mate i can't help then. Would it be possible for you to post a pic up of the rear of the m737 freehub?


Top
 Profile  
 
PostPosted: Wed May 15, 2013 4:36 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Mar 13, 2009 7:19 pm
Posts: 3132
Location: Leeds, for ages!
Just had a look at the freehub chart.

the nearest match(as per tech waffle) the LX565 has the same part number...Y3SA98010. without a key i can't decipher the other letters and characters.

crc also have those in £11 odd.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 posts ]  Go to page 1, 2  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: baldbones, foz, kaya, Retro_Roy, shinobi, widowmaker and 56 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:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group