I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard. I'd appreciate any guidance someone might give me on the feasibility of such a conversion.
"Todd Bryan" <[email hidden]> wrote in message news:va9ub.23309$Q64.23141@fed1read03...
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I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard. I'd appreciate any guidance someone might give me on the feasibility of such a conversion.
Exactly. You may not even have to go with a shorter axle, so try it out first. 3mm isn't a bunch.
IIRC, I put about 16mm of space between the end of the hub and the outside of the locknut on the drive side. Seems to keep my track wheels happy... Your chainline may vary, so check it out first!
I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard. I'd appreciate any guidance someone might give me on the feasibility of such a conversion.
Yes that would work fine, the easiest way to go is to get a hub with a typical 10mm axle and buy a collection of spacers that allows you to remove the proper amount, then trim the axle so it does not protrude past the dropouts. 10mm aluminum spacers in various widths should be readily available at any decent shop.
"Paul Southworth" <[email hidden]> wrote in message "]news:[email hidden]...
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In article va9ub.23309$Q64.23141@fed1read03 said:
I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard. I'd appreciate any guidance someone might give me on the feasibility of such a conversion.
Yes that would work fine, the easiest way to go is to get a hub with a typical 10mm axle and buy a collection of spacers that allows you to remove the proper amount, then trim the axle so it does not protrude past the dropouts. 10mm aluminum spacers in various widths should be readily available at any decent shop.
--Paul
If you do that, make sure you thread on a nut before you cut it. After you're done cutting, back the nut off.
bryan-<< I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard.
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That's right, just need to ensure you have enough threads on the right side for the freewheel you intend to use.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"
I have an older frame with 120mm rear spacing. I'd rather not bend the frame out to 126mm, but good 120mm hubs are hard to find. I've noticed that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many of these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard. I'd appreciate any guidance someone might give me on the feasibility of such a conversion.
I've done it for an old 10-speed bike and ended up with a dishless wheel as a result. It wasn't necessary to shorten the axle.
I have an older frame with 120mm rear spacing. I'd rather not bend th=
e
Quoted message said:
frame out to 126mm, but good 120mm hubs are hard to find. I've notice=
d
Quoted message said:
that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many =
of
Quoted message said:
these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard.=
Quoted message said:
I'd appreciate any guidance someone might give me on the feasibility o=
f
Quoted message said:
such a conversion.
Like others have said, that sounds alright. If you remove unequal amoun= ts =
of spacer on either side of the hub, you will need to recenter (aka dish= ) =
dvt <dvt [email hidden]> wrote in message news:<opryulfeccqi5lh2@localhost>...
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Todd Bryan said:
I have an older frame with 120mm rear spacing. I'd rather not bend th
e
Quoted message said:
frame out to 126mm, but good 120mm hubs are hard to find. I've notice
d
Quoted message said:
that many of the 126mm freewheel hubs appear similar to 120mm hubs; that is, the flange-to-flange spacing did not change. Instead, many
of
Quoted message said:
these hubs appear to have spacers on the axle just outside of the locknuts. To me this implies that with a shorter axle and removal of these spacers, one can convert such a hub to the older 120mm standard.
Quoted message said:
I'd appreciate any guidance someone might give me on the feasibility o
f
Quoted message said:
such a conversion.
Like others have said, that sounds alright. If you remove unequal amoun ts
of spacer on either side of the hub, you will need to recenter (aka dish )
the wheel.
I am using a 138 mm hub in a 135 mm dropout the dropouts spring back to 135 when the wheel is removed. this does not damage the bike.
