#1
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Duomatic rims
I have seen a lot of Torpedo Duomatic rims that
are "untrued" (?) beyond repair, often with three of four spokes broke. I take it is the same material (rim, spokes) with 1S, 3S or 5S Torpedo rims and spokes, where I haven't seen this to this extent by far. So I wonder, is it something with the Duomatic mechanism/usage that wears down the rim faster than the other hubs? -- underground experts united http://user.it.uu.se/~embe8573 |
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#2
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Duomatic rims
On 10/8/2018 9:24 AM, Emanuel Berg wrote:
I have seen a lot of Torpedo Duomatic rims that are "untrued" (?) beyond repair, often with three of four spokes broke. I take it is the same material (rim, spokes) with 1S, 3S or 5S Torpedo rims and spokes, where I haven't seen this to this extent by far. So I wonder, is it something with the Duomatic mechanism/usage that wears down the rim faster than the other hubs? No. Snip out the spokes, clean lubricate and adjust the hub then rebuild with new spokes and rim. German made Torpedo CB hubs (and US, UK, etc classic models) have substantial steel hubshells which move heat better than modern thin models. Worth keeping IMHO. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#3
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Duomatic rims
AMuzi wrote:
No. Snip out the spokes, clean lubricate and adjust the hub then rebuild with new spokes and rim. These rims cannot be trued, not with reasonable effort anyway. You'd had to move the Duomatic hub onto a better rim. German made Torpedo CB hubs (and US, UK, etc classic models) have substantial steel hubshells which move heat better than modern thin models. Worth keeping IMHO. I love Torpedo but I've seen so many completely distorted rims with Duomatic hubs so it baffles me it is a coincidence. But if you say so I suppose it is. -- underground experts united http://user.it.uu.se/~embe8573 |
#4
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Duomatic rims
On 10/8/2018 10:39 AM, Emanuel Berg wrote:
AMuzi wrote: No. Snip out the spokes, clean lubricate and adjust the hub then rebuild with new spokes and rim. These rims cannot be trued, not with reasonable effort anyway. You'd had to move the Duomatic hub onto a better rim. German made Torpedo CB hubs (and US, UK, etc classic models) have substantial steel hubshells which move heat better than modern thin models. Worth keeping IMHO. I love Torpedo but I've seen so many completely distorted rims with Duomatic hubs so it baffles me it is a coincidence. But if you say so I suppose it is. You cannot possibly be serious. The rim maker has no relationship to the hub maker. Zero. You have a fine classic hub and a wrecked rim. Throw the rim away and build on a new rim just like everyone else does periodically. Although some riders (Jobst Brandt et al) reuse spokes we don't see the point, a rebuild here being new spokes with new rim, and a high volume service at that. Equipment wears out. Some things, such as Campagnolo Record hubs or SA gearboxes or Torpedo hubs or classic steel frames, get rebuilt/refurbished. Other things, such as tires, rims, brake blocks, STi shifters and handlebar tape, are disposable. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#5
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Duomatic rims
AMuzi wrote:
The rim maker has no relationship to the hub maker. Zero. I mean: the *usage* of the Duomatic with the constant gearing back and forth by pedaling backward and then accelerating! -- underground experts united http://user.it.uu.se/~embe8573 |
#6
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Duomatic rims
On Monday, October 8, 2018 at 8:57:49 AM UTC-7, AMuzi wrote:
On 10/8/2018 10:39 AM, Emanuel Berg wrote: AMuzi wrote: No. Snip out the spokes, clean lubricate and adjust the hub then rebuild with new spokes and rim. These rims cannot be trued, not with reasonable effort anyway. You'd had to move the Duomatic hub onto a better rim. German made Torpedo CB hubs (and US, UK, etc classic models) have substantial steel hubshells which move heat better than modern thin models. Worth keeping IMHO. I love Torpedo but I've seen so many completely distorted rims with Duomatic hubs so it baffles me it is a coincidence. But if you say so I suppose it is. You cannot possibly be serious. The rim maker has no relationship to the hub maker. Zero. You have a fine classic hub and a wrecked rim. Throw the rim away and build on a new rim just like everyone else does periodically. Although some riders (Jobst Brandt et al) reuse spokes we don't see the point, a rebuild here being new spokes with new rim, and a high volume service at that. Equipment wears out. Some things, such as Campagnolo Record hubs or SA gearboxes or Torpedo hubs or classic steel frames, get rebuilt/refurbished. Other things, such as tires, rims, brake blocks, STi shifters and handlebar tape, are disposable. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 Andrew, while we're on the subject - I've been seeing a LOT of broken Mavic wheelsets. They usually crack between spoke holes and because people do not inspect them they grow to the point that they actually break spokes out of the rim. I don't recall this ever occurring with MA-2's. Do you have anything to say about this? |
#7
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Duomatic rims
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