What hubs are these?
03-06-24, 01:17 PM
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What hubs are these?
I’m at my favorite chrome plating shop in St. Louis and noticed these hubs. Never seen anything like them.
anybody recognize??
thanks
anybody recognize??
thanks
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03-06-24, 02:22 PM
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I don't know the answer, but those hubs are very interesting!
Sure, the tapered & rippled section between the flanges is unique, but the spoke holes in the flanges also caught my attention. They don't exist at a constant radius from the axle like a typical hub.
I'd hesitate to assume that these are bike hubs, based on these novel features.
Pretty interesting, in any case!
Steve in Peoria
Sure, the tapered & rippled section between the flanges is unique, but the spoke holes in the flanges also caught my attention. They don't exist at a constant radius from the axle like a typical hub.
I'd hesitate to assume that these are bike hubs, based on these novel features.
Pretty interesting, in any case!
Steve in Peoria
03-06-24, 02:26 PM
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Don't know. But I want a pair.
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03-06-24, 02:32 PM
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t'is possible to chrome plate aluminum
Tecno Tubo Torino for example offered some of their alloy saddle pillars in a chrome plated finish in the late seventies - early eighties time
do not wish to assert hubs are dural underneath but wanted to mention it as a possibility to keep in mind...
one clue might be the flange thickness
would be interesting to see pattern of relief holes in flange - below those of spoke holes
since hubs not in your possession appreciate it may not be possible to make further images
-----
t'is possible to chrome plate aluminum
Tecno Tubo Torino for example offered some of their alloy saddle pillars in a chrome plated finish in the late seventies - early eighties time
do not wish to assert hubs are dural underneath but wanted to mention it as a possibility to keep in mind...
one clue might be the flange thickness
would be interesting to see pattern of relief holes in flange - below those of spoke holes
since hubs not in your possession appreciate it may not be possible to make further images
-----
03-06-24, 08:36 PM
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-----
t'is possible to chrome plate aluminum
Tecno Tubo Torino for example offered some of their alloy saddle pillars in a chrome plated finish in the late seventies - early eighties time
do not wish to assert hubs are dural underneath but wanted to mention it as a possibility to keep in mind...
one clue might be the flange thickness
would be interesting to see pattern of relief holes in flange - below those of spoke holes
since hubs not in your possession appreciate it may not be possible to make further images
-----
t'is possible to chrome plate aluminum
Tecno Tubo Torino for example offered some of their alloy saddle pillars in a chrome plated finish in the late seventies - early eighties time
do not wish to assert hubs are dural underneath but wanted to mention it as a possibility to keep in mind...
one clue might be the flange thickness
would be interesting to see pattern of relief holes in flange - below those of spoke holes
since hubs not in your possession appreciate it may not be possible to make further images
-----
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03-06-24, 11:52 PM
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GT Superlace
GT Chrome Superlace + NOS GT Freestyle Tire + UKAI Speedline by RIPPIN', on Flickr
I assume the staggered holes mean the wheel can be built three cross without the spokes interfering with each other.
GT Chrome Superlace + NOS GT Freestyle Tire + UKAI Speedline by RIPPIN', on FlickrI assume the staggered holes mean the wheel can be built three cross without the spokes interfering with each other.
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05-21-24, 06:05 PM
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Robvolz were you at St Louis Plating (aka Family Finishing, LLC) by chance? I'm trying to see if they are still in business or do I need to find an alternate shop to get my chrome forks redone. TYIA
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05-21-24, 09:04 PM
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Looks like three-cross in the photo.
05-22-24, 02:51 AM
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The spokes are in a four-cross pattern.
There are two spoke-hole circles; all the spokes going one way exit from one circle, all the others the other.
All the spokes exit the flange at the same angle they would were there two spoke-hole circles the same diameter.
It helps if you understand that the sole function of a crossed-spoke pattern is to avoid wind-up; that tangential spoking is thus the most desirable, and that the number named "cross" indicates how close to tangent a spoke is.
The spoke angle is easy to figure out: it's 720*(X/N), so for a 36-hole wheel[1] you get:
0=0
1=20
2=40
3=60
4=80 degrees
Maximum "cross" for any hub is N/9 - this maximum is the value above which the spoke angle is greater than 90, meaning the spoke line reduces the effective hub diameter (giving more windup as well as other negatives).
In the wheel above the spokes are indeed close to tangent; the reduced diameter of one spoke-hole circle relative to the other is what ALLOWS a four-cross spoke angle - large-flange hubs usually cannot achieve this as the spoke heads interfere (were the two spoke-hole circles the same diameter the maximum cross would likely be 3).
[1] this assumes equal spacing of hub and/or rim spoke-hole positions
There are two spoke-hole circles; all the spokes going one way exit from one circle, all the others the other.
All the spokes exit the flange at the same angle they would were there two spoke-hole circles the same diameter.
It helps if you understand that the sole function of a crossed-spoke pattern is to avoid wind-up; that tangential spoking is thus the most desirable, and that the number named "cross" indicates how close to tangent a spoke is.
The spoke angle is easy to figure out: it's 720*(X/N), so for a 36-hole wheel[1] you get:
0=0
1=20
2=40
3=60
4=80 degrees
Maximum "cross" for any hub is N/9 - this maximum is the value above which the spoke angle is greater than 90, meaning the spoke line reduces the effective hub diameter (giving more windup as well as other negatives).
In the wheel above the spokes are indeed close to tangent; the reduced diameter of one spoke-hole circle relative to the other is what ALLOWS a four-cross spoke angle - large-flange hubs usually cannot achieve this as the spoke heads interfere (were the two spoke-hole circles the same diameter the maximum cross would likely be 3).
[1] this assumes equal spacing of hub and/or rim spoke-hole positions
Last edited by oneclick; 05-22-24 at 04:57 AM.
