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PostPosted: Mon Feb 23, 2009 3:52 pm 
Retro Guru

Joined: Tue May 27, 2008 11:29 am
Posts: 405
Location: Tavistock, Devon, UK
I just bough ta Cannondale M400 frame from a member on here, its lovely, but has no under BB cable guide - just a hole in the alloy bb shell where one would go. I bought a shimano plastic guide form chainreaction, but it isnt the right shape at all - does anone have any tips on this?
Im not sure how it bolts on, as the hollowtech cranks im running wouldnt allow for a 'nut' to be used in the inside of the BB shell if i were to use a bolt from the outside.. as there isnt much room in the shell for anything other than the fat crank arm - or is a bolt meant to thread directly into the alloy hole?
Any help greatly appreciated!
Ive ordered a Campag cable guide from ebay, and hope itll fit - but Im not sure how it bolts on...
steve


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PostPosted: Mon Feb 23, 2009 4:02 pm 
Retro Guru
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Joined: Tue Jan 20, 2009 1:40 pm
Posts: 281
Location: Basingstoke
I recently fitted one. It's the blue shimano one. Not sure of the model number.

What I did was get a pop rivet that was long enough to go through the hole.
Pulled the gun to keep it in place.

Once I did this I was unable to get the bottom bracket through the hole as the pop rivet was in the way.

I then pushed the centre pin out of the rivet and squashed the rivet flat from inside the bottom bracket. This allowed the bottom bracket to be fitted without obstruction.

At the end of the day all you want to do is keep it in place. It doesn't have to be rock solid because the cables will be run over it anyway.


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PostPosted: Mon Feb 23, 2009 4:18 pm 
Posh Mark
Posh Mark
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Joined: Wed Apr 18, 2007 2:49 pm
Posts: 5981
Location: As far from the city as you can be ....
My LBS have a pot of them - got mine from there.

If you get stuck.......

Or here:

http://www.retrobike.co.uk/forum/viewtopic.php?t=23236&highlight=


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PostPosted: Mon Feb 23, 2009 4:21 pm 
Retro Guru

Joined: Mon Aug 21, 2006 12:10 pm
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Location: High Peak
The ones I've seen in the past have been fitted with a short screw which threads into the hole in the shell.


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PostPosted: Mon Feb 23, 2009 4:21 pm 
Retro Guru
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Joined: Fri Jan 16, 2009 10:50 am
Posts: 1043
Location: on the mothership with a probe up my aaa..
my old saracen has a little moulded bit of plastic that screws into a threaded hole in the bb shell, guides the front and rear mech cables.
constantly clogging up with mud and leaves and sticks, and loads of friction to make the gear changes that little bit harder. bloody nightmare
best bit is the screw is just a bit too long and sticks out inside the bb shell so you cant fit an isis cartridge bb in there.


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PostPosted: Tue Feb 24, 2009 10:45 am 
MacRetro rider
MacRetro rider

Joined: Fri Feb 09, 2007 4:16 pm
Posts: 8658
Superglue :D

Its worked for me on bikes with the same problem.

Cheers


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PostPosted: Tue Feb 24, 2009 1:24 pm 
Retro Guru

Joined: Tue May 27, 2008 11:29 am
Posts: 405
Location: Tavistock, Devon, UK
I was thinking along the superglue lines actually!
My other thought was to buy a clamp on cable stop for the seattube, and run a top route for the cable for both mechs - with full outer zip tied to the frame up to the cable stops - good idea?


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PostPosted: Tue Feb 24, 2009 1:43 pm 
MacRetro rider
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Joined: Fri Mar 09, 2007 2:11 pm
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Location: DUNDEE
I'm not giving mine up yet - the m400 one is much longer than the standard one,

..but you could fit a standard one and run a length of ptfe tube (brake inner sleeve) through the cable guide past the BB and thread the gear cable through that - should be enough protection to prevent sawing of the Alu.


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PostPosted: Tue Feb 24, 2009 2:03 pm 
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26157
Location: Moomin Valley
The tension of the cables usually keeps these blighters in place whether they are fixed to the frame or not.


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PostPosted: Tue Feb 24, 2009 3:39 pm 
Retro Guru
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Joined: Fri Jan 16, 2009 10:50 am
Posts: 1043
Location: on the mothership with a probe up my aaa..
Quote:
I was thinking along the superglue lines actually!
My other thought was to buy a clamp on cable stop for the seattube, and run a top route for the cable for both mechs - with full outer zip tied to the frame up to the cable stops - good idea?


thats pretty much what i do, except with duck tape instead of zipties :). was gonna suggest it, but not really factory original.


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