M951 XTR DH Spider BCD question

[Harryburgundy]

Am I right in thinking the M951 DH Spider is specific the the DH rings....ie 4 arm and a silly BCD?
Ta, Carl

 

[Harryburgundy]

Ah yes...to answer my own Q, I think they are 112 BCD

 

[Curly68]

Thats brilliant! Usually when I ask a question I have to wait for someone to answer it. How did you do that?
Yes they are 112 bcd and only the DH rings fit but the spider is held on with a lockring and you can get a Middleburn spider for £40 which then allows you to fit 4 arm 104bcd rings. Have done on mine!

 

[marc two tone]

spider

Thats brilliant! Usually when I ask a question I have to wait for someone to answer it. How did you do that?
Yes they are 112 bcd and only the DH rings fit but the spider is held on with a lockring and you can get a Middleburn spider for £40 which then allows you to fit 4 arm 104bcd rings. Have done on mine!

£40? cool,ive got some arms and a lockring,no spider!
how much does your complete set weigh? just for research?!

 

[Harryburgundy]

Thats brilliant! Usually when I ask a question I have to wait for someone to answer it. How did you do that?
Yes they are 112 bcd and only the DH rings fit but the spider is held on with a lockring and you can get a Middleburn spider for £40 which then allows you to fit 4 arm 104bcd rings. Have done on mine!

Thanks, pretty sure that was the answer, but always appreciate a double check.
Thanks,Carl

 

[Curly68]

Re: spider

Thats brilliant! Usually when I ask a question I have to wait for someone to answer it. How did you do that?
Yes they are 112 bcd and only the DH rings fit but the spider is held on with a lockring and you can get a Middleburn spider for £40 which then allows you to fit 4 arm 104bcd rings. Have done on mine!

£40? cool,ive got some arms and a lockring,no spider!
how much does your complete set weigh? just for research?!

Not sure how much they weigh. Not really bothered by that. I put them on and ride the bike!
Sorry that's not much help.

 

[FluffyChicken]

http://www.paul-lange.de/produkte/shima ... 951-DH.pdf

Though the 112 BCD was not specific to the DH version, the M951/952 series used it for their top ring for the 4 arm versions, though only the middle could be changed

Why they used a removable ring for the DH version I have no idea, moving away from the mono outer ring-spider of the triple version. Just seems a bit odd.

Pretty pictures also here
http://members.home.nl/children-of-the-korn/XTR950.htm


Middleburn spider weighs 65g according to CRC page.

 

[Harryburgundy]

http://www.paul-lange.de/produkte/shimano/support/explosionszeichungen_archiv/FC/FC-M951-DH.pdf

Though the 112 BCD was not specific to the DH version, the M951/952 series used it for their top ring for the 4 arm versions, though only the middle could be changed

Why they used a removable ring for the DH version I have no idea, moving away from the mono outer ring-spider of the triple version. Just seems a bit odd.

Pretty pictures also here
http://members.home.nl/children-of-the-korn/XTR950.htm


Middleburn spider weighs 65g according to CRC page.

Excellent info there.....whats that special tool (11).
Thought I would just need a lock-ring tool to remove the spider. :?

 

[FluffyChicken]

TL-UN96, I have no idea as never had one of these spider chainsets and the only tools I have for bottom brackets are the one that came with my BB-UN90 and my recent HTII thing. (and a hammer and screwdriver for the old cup n cone type )



Though looks like this thing on CRC http://www.chainreactioncycles.com/Mode ... odelID=995 but someone will actually know


EDIT staring at them , is it just there to hold the main tool in so it doesn't slip, e.g. you screw the crank bolts in to it ?


Same tool as used for middleburns apparently

 

[Harryburgundy]

No mention of its use here....

http://www.parktool.com/repair/readhowto.asp?id=121

Reckon when the cranks turn up it will all become clear