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Old 02-21-09, 09:33 PM   #1
Bikedued
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28.6 front derailleur with a stop?

Does anyone still make/sell one of these? I'm updating my 1983 Univega GranTurismo with 8 speed Brifters and Deore XT 90's derailleurs. I have a set of 8 speed hybrid wheels on it with 38C tires, and of course a long cage Deore XT to handle the triple in front. I have kind of hit a snag however. Running the shifter cables is proving to be a task, since the bottom bracket guide is an above the shell type. Should I drill the shell and install a cable guide underneath? I really don't want to as that wouldn't help with the rear anyway. It has the chain stay stop on top. I also don't want to install a clamp on stop on the seat
tube for the FD, that would look kind of like a band aid..... The only solution I've come up with so far is to use some 3M double sided tape to hold on the guide under the BB. I've seen that stuff do some amazing things with cars which are in the elements 24/7.

My main question I guess would be... Is there a FD still made these days with a housing stop, that can handle a triple? If not I guess I'm back to the DS tape, hehe.,,,,BD
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Old 02-22-09, 01:14 AM   #2
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Well I'm not sure what's wrong with the above the shell BB cable guide but anyway, a bit of double sided tape to hold a cable guide in place below the BB shell is fine. Mine was screwed in below the BB shell but I noticed it was slightly out of place and the cable to the front deraileur was rubbing on the frame. I moved the guide and held it in place with double sided tape and all is fine.

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Old 02-22-09, 08:13 AM   #3
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I've read here of riders successfully installing an under the bb cable guide with no bolt or any other retainer, just relying on the cable tension to hold it in place. So, if that works, the double sided tape should be plenty good.
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Old 02-22-09, 08:18 AM   #4
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Above the shell, as in a stop on the left side. Every FD I've seen except for old school stuff, has no stop built in for the cable housing to make the curve upwards? The only way the cable could make the turn is under the BB, or a full length cable housing with clamps((fugly)).,,,,BD

I guess it's time to break out the DS tape.
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Old 02-22-09, 08:22 AM   #5
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Most above BB cable guides that I'm familar with, use a bare cable. No housing needed in this location. Maybe show a pic.
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Old 02-22-09, 08:25 AM   #6
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Originally Posted by Bikedued View Post
Above the shell, as in a stop on the left side. Every FD I've seen except for old school stuff, has no stop built in for the cable housing to make the curve upwards? The only way the cable could make the turn is under the BB, or a full length cable housing with clamps((fugly)).,,,,BD

I guess it's time to break out the DS tape.
OK I get ya now.

Yes the DS tape on the plastic guide works just fine.
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Old 02-22-09, 08:56 AM   #7
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My guide looks like this one, but is a Suntour part.,,,,BD


http://images.andale.com/f2/115/106/...cableguide.jpg
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Old 02-22-09, 10:27 AM   #8
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A front derailer with a stop, just for clarification.



It seems to to me that you should be looking for a different cable guide rather than a different derailer. An old Campagnolo will work, and they're easy to find.



If you do decide to use 3M double sided foam tape, be sure it is the tape with the red backing. It's for exterior use.
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Old 02-22-09, 06:55 PM   #9
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Originally Posted by Dirtdrop View Post

It seems to to me that you should be looking for a different cable guide rather than a different derailer. An old Campagnolo will work, and they're easy to find.


When bikedued was talking about above the BB cable guides this is what I was thinking of.

As to double sided tape the tape I used was VERY thin, it isn't the foam core type which I have used for other things. While the thin tape probably doesn't grip as strongly as the thick, foam core style of tape it doesn't need to grip that strongly as the cable tension is keeping the guide in place and I'm concerned that thick tape under the guide will cause alignment problems. You can't see what I'm using to hold the guide on when using the thin, double sided tape.

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Old 02-22-09, 07:18 PM   #10
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For now I just have the cable tension holding it in place, and it seems to be in place pretty firmly. I will drop the cable as soon as I can get a shor piece of DS tape from work. It shifts perfectly, and is much more convenient to ride now.,,,,BD

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Old 02-23-09, 12:40 PM   #11
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How about a clamp-on cable stop? I considered this for my wife's mixte with the same issue, but ended up going with an older derailleur, which matched the ring profile well enough.
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Old 02-26-09, 08:46 PM   #12
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I used a clamp-on cable stop on my Univega when I converted it to a triple. I had a set of deore mountain bike derailleurs, and obviously no stop on the front, so I improvised with an old suntour clamp-on stop. Here's a photo from each side.



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