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Hose clamp on seat tube?

Old 07-29-17, 10:45 AM
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Hose clamp on seat tube?

I'm going to go look at a bike today which I hope to refurbish for my nephew (it'll be his first road bike). In one of the CL photos, I see this hose clamp at the top of the seat post. I'm thinking it might have been used to hold some home-rigged seat pack or something, but it looks hinky to me. Are these seatposts prone to cracking there, in a way that someone might use a hose clamp to keep it together? I plan to take a screwdriver so I can take the clamp off and check, but I'm not sure what I'm checking for aside from an obvious split at the top of the post.
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Old 07-29-17, 10:55 AM
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Seatpost $15 in the grand sceam of things is that really a concern?
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Old 07-29-17, 10:57 AM
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I seem to recall seeing a seatpost where the mounting bracket was a separate piece fit into the tube but was loose enough to rotate. Not good. Obviously not possible on a forged one-piece.
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Old 07-29-17, 10:59 AM
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Some of the older Kalloy posts used to employ a set screw to anchor the head.
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Old 07-29-17, 04:44 PM
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I had one that cracked there. The top part was press-fit onto the tube and they apparently fitted it a bit tight, with predictable results.
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Old 07-29-17, 05:20 PM
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Originally Posted by copperfind
Seatpost $15 in the grand sceam of things is that really a concern?
Frankly, yes. The bike was being sold as "just needs tires/tubes and maybe general maintenance." The chain is rusted, the FD is bent, and it looks like it's been sitting outside a while. The asking price is c/w a bike that just needs maintenance and maybe tires. Every part that can't be refurbished puts me closer to offering only the value of a nice frame and fork with rusty cable guides. It all adds up, my friend.

Originally Posted by CroMo Mike
I had one that cracked there. The top part was press-fit onto the tube and they apparently fitted it a bit tight, with predictable results.
Yep, that's what it looked like - press fit. There was a split. Looks like the bike was dropped on its side and the post cracked when the seat hit. I got him to take another $20 off.
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Old 07-30-17, 07:50 PM
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Originally Posted by Kevindale
Frankly, yes. The bike was being sold as "just needs tires/tubes and maybe general maintenance." The chain is rusted, the FD is bent, and it looks like it's been sitting outside a while. The asking price is c/w a bike that just needs maintenance and maybe tires. Every part that can't be refurbished puts me closer to offering only the value of a nice frame and fork with rusty cable guides. It all adds up, my friend.



Yep, that's what it looked like - press fit. There was a split. Looks like the bike was dropped on its side and the post cracked when the seat hit. I got him to take another $20 off.
Unless it fits you perfectly, and is something you really want, I'd say pass. You've got too many negatives on it already.
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Old 07-30-17, 08:52 PM
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Originally Posted by gugie
Unless it fits you perfectly, and is something you really want, I'd say pass. You've got too many negatives on it already.
Looks like OP has purchased the bike and has entered it into the clunker challenge. With all of the mentioned defects, I'd say it's perfect for it.
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Old 07-30-17, 09:15 PM
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Originally Posted by zammykoo
Looks like OP has purchased the bike and has entered it into the clunker challenge. With all of the mentioned defects, I'd say it's perfect for it.
Yes, I did. My rationale is that I want a decent starter road bike for my 15 y/o nephew, something he can go fast with if he likes it, but that I won't bat an eye if it gets damaged or stolen. It's a bit small for me. There's also a good chance he'll outgrow it within the next couple of years, at which point he can pass it along to his younger brother or sell it and put that towards another bike.

I have a spare 105 clamp-on FD if I can't repair the bent one on there, and I think I have a spare seat post, maybe even two.
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Old 07-30-17, 10:26 PM
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Originally Posted by Kevindale
Yes, I did. My rationale is that I want a decent starter road bike for my 15 y/o nephew, something he can go fast with if he likes it, but that I won't bat an eye if it gets damaged or stolen. It's a bit small for me. There's also a good chance he'll outgrow it within the next couple of years, at which point he can pass it along to his younger brother or sell it and put that towards another bike.

I have a spare 105 clamp-on FD if I can't repair the bent one on there, and I think I have a spare seat post, maybe even two.
If it's in the Clunker Challenge, then you got a good deal on it!
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Old 08-01-17, 12:34 PM
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Originally Posted by copperfind
Seatpost $15 in the grand sceam of things is that really a concern?
My thoughts exactly!
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Old 08-01-17, 01:13 PM
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I've seen enough seatpost/clamp assembly separation on two piece seatpost to never consider using such if I can in any way avoid it ( it must be one of the worst ideas to save money by component manufacturers).......and this is from a "live dangerously" C&V bonded frame CF bike fan...
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