Drum brake installation - cable guides on fork?
I'm approaching the end of a build, and the last thing to do is build the drum brake-equipped front wheel once my XL-FD hub arrives. I've never had a bike with drum brakes before, and I'm trying to figure out what'll keep the cable from flopping around on its run from the brake lever to the reaction arm on the hub. It'll be going onto a Panasonic Sport 500, an early '80s 10-speed. I'm hoping for something a bit nicer than just zipties, but it seems like that's perhaps the simplest option? I looked for pictures of these hubs installed, but everything was a close-up of just the hub, or if it showed more of the fork, it was usually on a bike that had brazed-on cable guides from the factory.
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Zip ties are how I did it 30 years ago. The cable attachments used for disc brake cables might also work:
http://www.universalcycles.com/shopp...&category=1613 http://www.universalcycles.com/image...dium/40212.jpg |
I've only ever used zip ties to secure drum brake cables on forks which do not have a built in cable guide, but there are cable guides out there which might be pressed into service. Might have to do some bending to get them to work on ovalized fork tubes.
http://ep.yimg.com/ca/I/yhst-3773699..._2268_94940684 Or, in the Sturmey Archer catalog, check out the cable guides on p. 46. One of what they have listed as top or down tube might fit, or the one for chain/back stay. Says you need the little plastic widget if you want it to be a cable stop, but ignore that and you've got an assortment of cable guides from which to choose. |
You might want to try routing the cable on the hidden side of the fork. Put two or three dabs of silicone on, and embed the cable before the silicone dries fully.
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Doesn't really apply in the OPs case, but I tend to like running drum brake cable/housing through the headset of a threadless setup using BMX-style through-the-headtube hardware. Answer makes one, there are others out there. Cable/housing runs out the bottom of the fork and I'll usually use one zip tie somewhere on or very near the fork crown area. Visually, cleans things up by hiding the big run of floppy cable/housing, and routes it to where it can be more or less hidden.
This is going to a disk brake and the fork actually has a cable guide, but you get the idea: http://www.bikeforums.net/attachment...3&d=1369830515 Not through the headset, but cable run under the grip, routing unsecured until it hits the drum cable stop: http://www.bikeforums.net/attachment...2&d=1359392870 |
Originally Posted by mconlonx
(Post 16534951)
I've only ever used zip ties to secure drum brake cables on forks which do not have a built in cable guide, but there are cable guides out there which might be pressed into service. Might have to do some bending to get them to work on ovalized fork tubes.
http://ep.yimg.com/ca/I/yhst-3773699..._2268_94940684 Or, in the Sturmey Archer catalog, check out the cable guides on p. 46. One of what they have listed as top or down tube might fit, or the one for chain/back stay. Says you need the little plastic widget if you want it to be a cable stop, but ignore that and you've got an assortment of cable guides from which to choose. |
Originally Posted by mconlonx
(Post 16535958)
Doesn't really apply in the OPs case, but I tend to like running drum brake cable/housing through the headset of a threadless setup using BMX-style through-the-headtube hardware. Answer makes one, there are others out there. Cable/housing runs out the bottom of the fork and I'll usually use one zip tie somewhere on or very near the fork crown area. Visually, cleans things up by hiding the big run of floppy cable/housing, and routes it to where it can be more or less hidden.
This is going to a disk brake and the fork actually has a cable guide, but you get the idea: http://www.bikeforums.net/attachment...3&d=1369830515 Not through the headset, but cable run under the grip, routing unsecured until it hits the drum cable stop: http://www.bikeforums.net/attachment...2&d=1359392870 |
"I'd be worried about them coming off in wet/cold weather."
I'd be more worried about them coming off in hot weather when the adhesive softens and creeps. You could also use self-fusing silicone tape in a matching or contrasting color (or clear) to strap the cable to the fork; it won't come loose and since it only sticks to itself it can be easily removed without leaving a sticky residue behind. |
Originally Posted by agmetal
(Post 16536031)
The stem idea is interesting, but you've correctly assumed that it won't work on my bike (quill stem). In the second picture, that looks cleaner than I'd expected (although I have my right hand controlling the front brake, so it would be crossing in front of the headtube). Do you run into any issues or excessive noise with the cable bouncing around?
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Cool...I'll probably try that to start, and see how it works out. If only the damn hub would hurry up and get here!
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I used electrical tape, b/c i'm classy. Plus, i've got front drums on bikes with black forks....
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Originally Posted by JohnDThompson
(Post 16537210)
You just need a braze-on :innocent:
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I made a guide, its bolted to the backside of the fork crown, and has a P clamp to loosely hold the housing.
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Originally Posted by Jeff Wills
(Post 16534251)
Zip ties are how I did it 30 years ago. The cable attachments used for disc brake cables might also work:
http://www.universalcycles.com/shopp...&category=1613 http://www.universalcycles.com/image...dium/40212.jpg |
Originally Posted by mconlonx
(Post 16534951)
Or, in the Sturmey Archer catalog, check out the cable guides on p. 46.
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Yeah, great catalog. I really like what the new Sturmey Archer has become. It's a bike geek's dream company.
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