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Old 01-15-05, 09:31 AM   #1
kylehampton
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Silliest question ever

I have never been touring or purchased a rack but I am building some touring bikes now for my girlfriend and me. So here is my question. Both bikes have the standard braze-on mounts near the rear dropouts. However, the top mount is a single braze-on located on the cross beam spanning the seatstay (right behind the straddle yoke for the brakes). I am more used to seeing two mounts on the outside of the stay.

Do all racks allow the use of this single central mounting point or do I need to buy some sort of adapter?

Thanks in advance.
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Old 01-15-05, 09:57 AM   #2
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That single "braze-on" is for fenders, or perhaps a reflector or a light. I don't know of any rack that attaches there. You'll need a clamps like the first on this page:

http://www.tubus.net/eng/produkte/zubehoer.php
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Old 01-15-05, 02:10 PM   #3
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My bike's Blackburn rack was mounted by my LBS in 1992 using the single-point method yours would allow. I have the dual anchor points also, but the Blackburn was apparently designed for mounting as I have it. It's rock solid and has been for all these years. Maybe some present-day racks still offer that mounting option. My experience with it reveals no downside.

Lew
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Old 01-15-05, 02:47 PM   #4
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Maybe some present-day racks still offer that mounting option. My experience with it reveals no downside.
If I may humbly suggest, get that changed to the clamp on dual option. My blackburn rack, like yours above, fell off last summer (after 6 years of loaded touring on roads and some rougher roads/paths) near the end of the trip (nothing is more annoying than having a rack attached at the bottom but not at the top and thus, being dragged behind you).

Seriously, use two clamps rather than a single brazon option. More sturdier and more stable.
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Old 01-15-05, 04:08 PM   #5
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Originally Posted by MsMittens
If I may humbly suggest, get that changed to the clamp on dual option. My blackburn rack, like yours above, fell off last summer (after 6 years of loaded touring on roads and some rougher roads/paths) ....
I'll definitely consider that, and thanks for the heads-up. I can only imagine how annoying that breakdown must've been. Which part failed on yours--the braze-on? My anchor point isn't a braze-on, but is instead a hole through that short crossbeam. It's seen 9000+ miles of loaded touring, but I've been easy on it as I don't load the rear rack overmuch, since I also have front panniers plus a substantial handlebar bag. I'm amazed by how stable it is; I can hardly budge it. But yes, it'd definitely be sturdier if dually anchored.
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Old 01-15-05, 04:10 PM   #6
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It's the actual aluminum bar that connected to the braze-on. It snapped in half. Oh.. and mine broke after about 25,000 KM in those 6 years.
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Old 01-15-05, 04:37 PM   #7
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That hole through the cross piece (properly the "brake bridge") is actually a brake mounting hole, though it can be used for a single point rack attachment.

You are indeed better off using two points to attach the rack. If you don't have the proper braze-ons (curiously enough Meanderthal's bike has them. They are the empty tubes on the seat stays just above the brake bridge and below the brake cable hanger) just use a couple of coated clamps like the ones in the picture I stole from www.thethirdhand.com

Your local bike ship probably has them in stock. They are cheap and effective.
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Old 01-15-05, 04:40 PM   #8
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They are the empty tubes on the seat stays just above the brake bridge and below the brake cable hanger) just use a couple of coated clamps like the ones in the picture I stole from www.thethirdhand.com
Yup. Those were the ones my bike shop gave me. IIRC, only cost about $4 CDN.
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Old 01-15-05, 04:41 PM   #9
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Yes, that looks to be the weak point in the system. My aluminum bar is about 1.5mm (1/16") thick and seems really sturdy, but way less than the rack itself. I've never actually looked at a dually-anchored rack. Are the two connecting bars integral to the rack? or separate, flat stock like mine?
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Old 01-15-05, 04:47 PM   #10
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Are the two connecting bars integral to the rack? or separate, flat stock like mine
The units I got were seperate.

I'll take two pictures: one of the present setup and one of the broken one.

[edit]

Ok. I can't find the bar (must have been pissed off enough to toss it. Here's my present setup:

Last edited by MsMittens; 01-15-05 at 05:10 PM.
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Old 01-15-05, 06:24 PM   #11
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"only cost about $4 CDN"

you can also find these at home depot and ace hardware. look for cable clamps
in the electrical section. cost like 20 cents apiece.
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Old 01-15-05, 06:33 PM   #12
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Thanks for the pic. I had misinterpreted your setup a bit and had assumed dual braze-ons like the ones on my seat stays. I've always wondered why the LBS didn't use mine, but maybe it was the rack selection that forced the decision back then.
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Old 01-15-05, 07:21 PM   #13
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Originally Posted by meanderthal
Are the two connecting bars integral to the rack? or separate, flat stock like mine?
Seperate flat stock and usually included with the rack. The advantage is in having two of them, providing a redundant "failsafe" system.
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Old 01-15-05, 08:22 PM   #14
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I had one of those single connecting bars shear at the frame bolt on an off road tour back in the eighties. I stopped on an uphill to get some water from a stream and the rack just toppled backwards, panniers and all, it was pretty tragicomic, actually. I needed to use bailing wire to keep the rack from pivoting backwards into the dirt. It'd be a good idea to get some frame clamps and a twin bar attachment.
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Old 01-15-05, 10:58 PM   #15
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Quote:
Originally Posted by Erick L
That single "braze-on" is for fenders, or perhaps a reflector or a light. I don't know of any rack that attaches there. You'll need a clamps like the first on this page:

http://www.tubus.net/eng/produkte/zubehoer.php
A few of those accessories would be great to take on extreme tours in case of braze-on failures. Thanks
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