Retrobike Forum Index

It is currently Sun Dec 04, 2016 7:39 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 20 posts ]  Go to page Previous  1, 2
Author Message
 Post subject:
PostPosted: Sun Jul 22, 2012 11:10 pm 
Old School Grand Master
User avatar

Joined: Sun Sep 05, 2010 1:10 am
Posts: 4756
Location: Heathfield, East Sussex
I'm all for 'hotrodding' an older frame, but I have to say I wouldn't have fitted that mech to that frame; I just wouldn't be happy with that cable run, and there is no solution to the current set up issue... :?


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 23, 2012 9:43 pm 
Gold Trader
Gold Trader

Joined: Wed Feb 04, 2009 9:40 pm
Posts: 2157
Location: Nottingham
I mix and (mis)match all sorts of stuff, but I wouldn't run that wire line.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jul 24, 2012 1:22 pm 
Retro Guru
User avatar

Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
I'm fairly sure a bottom swing M950 front mech was not made?

Just to clarify, the front mech is top swing / bottom pull. Clearly pulling a mech from the opposite direction it was manufactured for would not work :roll: without a frame pulley type thingamajig.

The cranks / hubs / shifters / front mech are all M950 8sp, the rear mech is a slightly later rapid rise XTR M95? with the rollalmajig type thing built on the back.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jul 24, 2012 3:31 pm 
B.o.T.M. Winner / Feature Bike
B.o.T.M. Winner / Feature Bike
User avatar

Joined: Tue Dec 13, 2005 3:26 pm
Posts: 6191
Location: Tilting at windmills and shouting at the rain.
One of these might help if you have a screw in cable guide:

http://www.ebay.co.uk/itm/eXotic-Bottom ... 375wt_1187

Image


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jul 24, 2012 4:32 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16746
Location: Yorkshire, England
gtRTSdh wrote:
I'm fairly sure a bottom swing M950 front mech was not made?

Just to clarify, the front mech is top swing / bottom pull. Clearly pulling a mech from the opposite direction it was manufactured for would not work :roll: without a frame pulley type thingamajig.

The cranks / hubs / shifters / front mech are all M950 8sp, the rear mech is a slightly later rapid rise XTR M95? with the rollalmajig type thing built on the back.


Not the M950 number, but in the M952 9 speed version series they made the M952 bottom swing version I would guess due to demand, and have done ever since.
Pictured here is the top and the bottom pull version of the M953, M952 mech at the bottom.
Image
Image


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jul 24, 2012 8:17 pm 
Retro Guru
User avatar

Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
Pete_MCC - one of those is on it's way to me, perfect solution.

Fluffy Chicken - the bottom swing mechs don't have the special split cage which is what makes it special, shame they couln't have made it work but I guess the pivots move in the wrong way.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jul 24, 2012 9:11 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16746
Location: Yorkshire, England
gtRTSdh wrote:
Pete_MCC - one of those is on it's way to me, perfect solution.

Fluffy Chicken - the bottom swing mechs don't have the special split cage which is what makes it special, shame they couln't have made it work but I guess the pivots move in the wrong way.


They don't but then they abandoned that idea for some reason on the next update (M960) and haven't gone back, probably too complicated, added weight and wasn't needed. Anyone know what reason where given at eh time for bottom swing not using it and the dropping of the design for M960?
...
Does look a neat solution, be interesting to see if you can give it a nice bend as well. Bit like you can alter the bend on v-brake noodles with some effort.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 26, 2012 4:54 pm 
Retro Guru
User avatar

Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
BB cable guide with tube arrived today, quite accpetable quality, moulded as one piece. It's made from quite rigid plastic and the tube is about 6mm dia with a 2.5mm hole through it, I'll probably have to cut the tube down as it's about 3" long but it should do the joba nd it should wear well as the wall thickness is about 2mm. Going to try fitting it now (yes instead of riding with my dodgy knee that I'm waiting to heal before anyone tells me to go out and ride)


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 26, 2012 6:14 pm 
B.o.T.M. Winner / Feature Bike
B.o.T.M. Winner / Feature Bike
User avatar

Joined: Tue Dec 13, 2005 3:26 pm
Posts: 6191
Location: Tilting at windmills and shouting at the rain.
Sounds good, I might have to get one myself. Can you heat it with a hairdrier to bend it to a better shape or is it flexible as it is?


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 26, 2012 7:10 pm 
Retro Guru
User avatar

Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
Not really flexible, quite stiff, will bend a bit but not much, too much force on it would break the connection the the normal cable guide section.

Front mech now works perfectly with no fear of damaging the frame until it wears through after many years.

From underneath before chop.

Image

In situ.

Image

Bike build so far: weighs 9.5Kg/21lb as is, so say +1lb for pedals and grips.

Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 20 posts ]  Go to page Previous  1, 2

All times are UTC [ DST ]


Who is online

Users browsing this forum: boswell, Klein-aficionado, My_Teenage_Self, shinobi and 42 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