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Axle for Velocity rear tandem hub
We have a Velocity rear tandem hub (145 mm spacing) with a bent axle.
I measured the diameter and it looks like 11-12mm, an odd size. It is also aluminum and that seems like a poor choice for a tandem hub. Any ideas where to find a replacement axle? The hub is made by Chosen and they don't list parts. |
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#2
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Axle for Velocity rear tandem hub
try WHEELS MFG online.
or LOOSESCREWS |
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Axle for Velocity rear tandem hub
On Feb 12, 5:05*pm, somebody wrote:
We have a Velocity rear tandem hub (145 mm spacing) with a bent axle. I measured the diameter and it looks like 11-12mm, an odd size. *It is also aluminum and that seems like a poor choice for a tandem hub. Any ideas where to find a replacement axle? *The hub is made by Chosen and they don't list parts. Have you contacted Velocity directly? In my experience they are very supportive and obliging. Also in my observation, a 12mm aluminum axle without threads can be much stronger than a 10mm hollow steel axle with threads on it, such as Shimano use on their tandem hubs. If you come up empty-handed, a smooth OD aluminum axle is one of the easiest parts for a machine shop to make. Specify 7075 aluminum for the strongest widely available aluminum alloy, or have them substitute an alloy steel like 4140 CrMo or 17-4 stainless. Chalo Colina |
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Axle for Velocity rear tandem hub
On Feb 13, 1:56*pm, Chalo wrote:
On Feb 12, 5:05*pm, somebody wrote: We have a Velocity rear tandem hub (145 mm spacing) with a bent axle. I measured the diameter and it looks like 11-12mm, an odd size. *It is also aluminum and that seems like a poor choice for a tandem hub. Any ideas where to find a replacement axle? *The hub is made by Chosen and they don't list parts. Have you contacted Velocity directly? *In my experience they are very supportive and obliging. Also in my observation, a 12mm aluminum axle without threads can be much stronger than a 10mm hollow steel axle with threads on it, such as Shimano use on their tandem hubs. If you come up empty-handed, a smooth OD aluminum axle is one of the easiest parts for a machine shop to make. *Specify 7075 aluminum for the strongest widely available aluminum alloy, or have them substitute an alloy steel like 4140 CrMo or 17-4 stainless. Chalo Colina ah CC k posse ? Your weather has been excrebale no ? did it rain ? what steel does Wheels MFG turn Wheels axles from ? If the tandem man want real steel go for Wheels alloy or better. With Wheels, the strong axle is delightfully bendable back into straight with a vise and 11 pound tapping hammer. The steels in early Suntour and SR steels do same...strong yet malleable. Of course, in tandem conditions, your recommendation of 4140 would never bend ? 4140 is unbendable ? |
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Axle for Velocity rear tandem hub
On Feb 13, 8:40*pm, kolldata wrote:
Of course, in tandem conditions, your recommendation of 4140 would never bend ? 4140 is unbendable ? 4140 CrMo alloy is just chromoly, a little stronger than 4130. Mainly, it's the most industrially standard chromoly for machined parts, the same way 4130 is the easy choice for fabrication. Remember, when we pay machinists for their time, we want them to be able to find the material quickly and work it without trouble. For sheer strength and toughness, a maraging steel alloy like Carpenter Aermet 100 would be better. Don't ask an ordinary local machinist to cut that, though. Chalo |
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Axle for Velocity rear tandem hub
On Mon, 13 Feb 2012 12:56:27 -0800 (PST), Chalo
wrote: On Feb 12, 5:05*pm, somebody wrote: We have a Velocity rear tandem hub (145 mm spacing) with a bent axle. I measured the diameter and it looks like 11-12mm, an odd size. *It is also aluminum and that seems like a poor choice for a tandem hub. Any ideas where to find a replacement axle? *The hub is made by Chosen and they don't list parts. Have you contacted Velocity directly? In my experience they are very supportive and obliging. Also in my observation, a 12mm aluminum axle without threads can be much stronger than a 10mm hollow steel axle with threads on it, such as Shimano use on their tandem hubs. If you come up empty-handed, a smooth OD aluminum axle is one of the easiest parts for a machine shop to make. Specify 7075 aluminum for the strongest widely available aluminum alloy, or have them substitute an alloy steel like 4140 CrMo or 17-4 stainless. Chalo Colina Great idea. I'll take the axle out to see what the rest looks like in terms of how far its threaded. The Velocity people are helpful, but they don't list the axle. They do have a steel freehub body, and that won't get deformed by the cassette the way the original aluminum body did. |
#7
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Axle for Velocity rear tandem hub
Carpenter ! search Metals Superstore, a chain. At the Boeing area,
very effective, also SF. I understand MSS has an unobtanium. Interesting Velocity doesn't have the original. If the hub has miles then a new one ? Use carbide to cut the Carpenter steel ? |
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Axle for Velocity rear tandem hub
On Tue, 14 Feb 2012 07:09:29 -0800 (PST), kolldata
wrote: Carpenter ! search Metals Superstore, a chain. At the Boeing area, very effective, also SF. I understand MSS has an unobtanium. Interesting Velocity doesn't have the original. If the hub has miles then a new one ? Use carbide to cut the Carpenter steel ? Metals Superstore/Metal Depot show english sizes. Where to get metric? And the pipe has a thin wall, any good place to find a thick wall? |
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