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Switching to bar ends...Do I need down tube cable stops?

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Switching to bar ends...Do I need down tube cable stops?

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Old 04-12-10, 09:15 AM
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CharmCityCycle
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Switching to bar ends...Do I need down tube cable stops?

OK, I've already sort of asked about this, and got some helpful responses, but I could use a little clarification. I'm switching from down tube shifters to bar ends. I just ordered the dia compe ones from Velo Orange:

http://www.velo-orange.com/diacosibash.html

I was going to go with some of the old Suntour barcons, but it seemed like they were going for just as much (or more) on ebay as the new dia compe copies. This is going to be my first bike, so I'm a little anxious to get it built up, and am less inclined to wait around for the good deals. Anyway, my question is, what else do I need? I keep reading about down tube cable stops for the braze ons...are these necessary? Also, I'm pretty sure the down tube shifters on my bike were clamp on (i.e. they are held on with a metal band). I'm going to take everything to the lbs next week to be built up, but I want to make sure I have everything that I need, that they aren't likely to have in stock.

Thanks in advance. I'm pretty sure this will be my last newb question for a while.
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Old 04-12-10, 09:18 AM
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Yes. You will need them, or else you'll need cable housing all the way down to the derailleur stops.

They did make such a thing as clamp on cable stops. They aren't too difficult to find, and shouldn't be terribly expensive.
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Old 04-12-10, 09:35 AM
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Is there some disadvantage to taking the cable housing approach?

If so, should I be looking at something like this:

http://cgi.ebay.com/ws/eBayISAPI.dll...%3DI%26otn%3D2

or this ugly new thing:
http://www.sjscycles.co.uk/product.a...S&currency=USD

or something completely other?
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Old 04-12-10, 09:44 AM
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The only disadvantage to running cables for barcons entirely in housing is that you'll need a lot of housing and you'll need some cable clips (or Zip Ties if you prefer) to hold the cable housing to the Downtube. Aesthetically some folks don't like to see that much housing running down the downtube although not everone gives a crap about that.

You'll either need cable clips or Cable stops, one or the other. Using a clamp-on cable stop is the more typical route, but there is nothing wrong with running housing all the way to the derailleurs and just using clips to keep the cable in place. Either way works.


If you're gonna use cable stops, you'll want one of these on (or something similar) http://cgi.ebay.com/Suntour-vintage-...#ht_500wt_1162 to go on the downtube approximately where your shifters used to be
and one of these (that you found earlier) http://cgi.ebay.com/ws/eBayISAPI.dll...1#ht_569wt_919 at the Bottom bracket.

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Old 04-12-10, 09:49 AM
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You'd want something like this.
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Old 04-12-10, 09:50 AM
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that seller owes us Zorro.... we both linked to his item
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Old 04-12-10, 09:57 AM
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Thanks guys. I just bid on his item, so he definitely does owe you.
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Old 04-12-10, 10:35 AM
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I feel kind of petty to admit this, but when I converted a bike to bar end shifters, the first shop I went in to wanted $25 for the time savers. Shocked, I went to the bike shop I use now and they gave me an old but perfect condition Shimano cable clamp.
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Old 04-12-10, 10:38 AM
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Problem Solvers?
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Old 04-12-10, 10:49 AM
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If you run cable housing the whole length of the shifter cables, you may have less crisp shifting due to cable housing compression/decompression, probably end up having to trim your derailleurs more. If you do do this, you might want to make sure you use cable housing designed for index shifting to minimize this.
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Old 04-12-10, 10:58 AM
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Originally Posted by Grand Bois View Post
Problem Solvers?
Right, Problem Solvers, someone had a link to the ugly things in a previous post.

I would advise against full housing runs. It causes a lot of friction and collects a lot of dirt. Cheap bikes used to use full housing back in the '70s, it was always a problem.
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Old 04-12-10, 10:58 AM
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Originally Posted by Grand Bois View Post
Problem Solvers?
Right, Problem Solvers, someone had a link to the ugly things in a previous post.

I would advise against full housing runs. It causes a lot of friction and collects a lot of dirt. Cheap bikes used to use full housing back in the '70s, it was always a problem.
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Old 04-12-10, 11:15 AM
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Find some old suntour clamp-on ratchet or power shifters (or similar) and disassemble them. The downtube stops can be attached where the shifters once lived.

I did this on my Lotus Odyssey which is now equipped with 9 speed 105 triple.
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Old 04-12-10, 11:29 AM
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Originally Posted by CharmCityCycle View Post
Is there some disadvantage to taking the cable housing approach?

If so, should I be looking at something like this:

http://cgi.ebay.com/ws/eBayISAPI.dll...%3DI%26otn%3D2

or something completely other?
If you currently have working DT shifters you don't want that clamp - it's for guiding cable at the base of the seat tube above the BB.
If you have braze-on mounts for the DT shifters you don't want the other clamp you bid on already. I have some adaptor's that screw onto the braze-ons that I'll send you.
If you had clamp on DT shifters you DO want the item you bid on. If you don't win I have one I'll send you.

Those VO bar ends are cool. I believe my Moteobecane still has them (though I sold one bike that used them).
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Old 04-12-10, 12:17 PM
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Originally Posted by robtown View Post
If you currently have working DT shifters you don't want that clamp - it's for guiding cable at the base of the seat tube above the BB.
The OP will need that Clamp for exactly that purpose, unless they've got one like it already.
**edit** on second thought, check your frame OP...see if you have a brazed on Cable-Stop on the left hand side of the downtube.


If you have braze-on mounts for the DT shifters you don't want the other clamp you bid on already.

The OP does not have braze-on mounts for DT shifters. They already stated in the initial post that the Shifters were clamp-on.

Last edited by Zaphod Beeblebrox; 04-12-10 at 01:00 PM.
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Old 04-12-10, 12:24 PM
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Originally Posted by eagleb View Post

I did this on my Lotus Odyssey which is now equipped with 9 speed 105 triple.
Are you running this in friction mode? If so, how is the shifting?
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Old 04-12-10, 12:29 PM
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Thanks everyone. Won the auction for the clamp on DT stops. Hopefully I'm good to go. I have to say the C&V section has the most helpful people...

Cheers.
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Old 04-12-10, 01:50 PM
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Originally Posted by robatsu View Post
Are you running this in friction mode? If so, how is the shifting?
I'm using brifters (which work very well), so it's a bit different.
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Old 04-12-10, 02:42 PM
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Originally Posted by unterhausen View Post
Right, Problem Solvers, someone had a link to the ugly things in a previous post.

I would advise against full housing runs. It causes a lot of friction and collects a lot of dirt. Cheap bikes used to use full housing back in the '70s, it was always a problem.
I agree that they're ugly and that full length housings belong on dept store bikes.
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Old 04-15-10, 02:20 PM
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I converted my bike from clamp on downtube shifters to Suntour bar-ends. I used this. No adjusters necessary. Works like a charm. I've read that the Dia Compe bar end shifters work even better than the Suntours. I sure do like my Suntours, so they must be pretty great.
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