who has a seatpost clamp like this?
10-03-13, 08:07 AM
#1
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who has a seatpost clamp like this?
I need to know the diameter and length of the dowel nut. I'm hoping that it's 7mm in diameter and 10mm in length. I guess we'll know soon enough.
Thanks in advance.
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10-03-13, 08:18 AM
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I have three clamps like that and they are all different. Take the band to a fastener shop or well equipped hardware store and try to match the bolt and nut that fit.
10-03-13, 09:04 AM
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If the OP lost the cross drilled dowel nut, he won't find that at a hardware store. Those aren't standard commercial items. He might find one at an on-line specialty hardware supplier, but minimum order requirements and/or shipping cost will make it prohibitive.
His best bet is the shop the clamp came from, or if he's very lucky it may the parts Thomson uses on seatposts will fit. Those are readily available at a reasonable cost.
His best bet is the shop the clamp came from, or if he's very lucky it may the parts Thomson uses on seatposts will fit. Those are readily available at a reasonable cost.
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10-03-13, 09:10 AM
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Yeah, I missed the "dowel nut" part. All of mine use standard bolts and nuts and these would be relatively easy to match.
10-03-13, 10:38 AM
#5
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OBP Salsa makes the type, though the slotted at an angle style was developed for Carbon frames..
as a loose part the Dowel nut loss may force you to either fabricate your own,
or replace the whole clamp-band.
as a loose part the Dowel nut loss may force you to either fabricate your own,
or replace the whole clamp-band.
10-03-13, 10:46 AM
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OTOH, a complete clamp of similar design is as low as $7.00 (maybe even lower, I didn't shop it hard). One would be hard pressed to make a dowel nut for less than that unless set up for the job already.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
10-03-13, 11:02 AM
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The fact that it may be cheaper to buy another clamp than fabricate another nut says nothing about which option makes more sense; it's merely an artefact of capitalism's inability to reflect every cost.
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10-03-13, 11:06 AM
#8
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Plus the industries behind most brands being off shore , and shipped on the Sea to Importers.
The way the game is run these days..
The way the game is run these days..
10-03-13, 11:15 AM
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I find it frustrating when I lose a small yet essential and seemingly insignificant part of a bike part. Especially when we may have a pile of said item at the bike co-op but they are all missing an important part that isn't easily obtainable.
Like the half moon wedge nuts you find on a lot of seat posts. WE have a pile of seat posts at our bike co-op that are unusable because they are all missing pieces of the seat post clamp area like the wedge nuts.
Like the half moon wedge nuts you find on a lot of seat posts. WE have a pile of seat posts at our bike co-op that are unusable because they are all missing pieces of the seat post clamp area like the wedge nuts.
10-05-13, 10:18 AM
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I couldn't find the barrel nut/dowel nut in the right size, and the minimum purchase quantity was way too high anyway. The Thomson seatpost hardware is the right thread size, but the barrel nuts are too large in diameter. My Dad has a lathe, so I will send a set to him and he will turn them down and shorten them to fit.
Seems like a lot of futzing around for such a simple clamp - I hope it's worth it.
Seems like a lot of futzing around for such a simple clamp - I hope it's worth it.
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10-05-13, 10:25 AM
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I couldn't find the barrel nut/dowel nut in the right size, and the minimum purchase quantity was way too high anyway. The Thomson seatpost hardware is the right thread size, but the barrel nuts are too large in diameter. My Dad has a lathe, so I will send a set to him and he will turn them down and shorten them to fit.
Seems like a lot of futzing around for such a simple clamp - I hope it's worth it.
Seems like a lot of futzing around for such a simple clamp - I hope it's worth it.
1- the part is hardened a bit so machining will be tough
2- turning off the plating will leave it vulnerable to rusting
3- how will your dad hold it in the lathe while turning the OD over it's length?
All of these can surmounted, but no way it it worth the effort. Your dad would be better off fabricating new parts from a length of stock brass. The only issue is drilling and tapping the cross hole, but possibly he already has the right drill and tap. Otherwise the cost will come close to simply buying a new clamp outright.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
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WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
10-06-13, 02:40 PM
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Let's see, 285 views at 1 minute per view = 4-1/2 hours of viewing at a $10 minimum wage means that thinking about your nut has cost the world at least $45. Geesh, just buy a new clamp. Of course if some viewers work at Old Navy factories in Bangladesh the cost of your nut will have been less.That's capitalism for you.
