Off Center Rims?

I've built with rims like this for years. They might look a bit odd at first, but they do work well.
Even before Ritchey started this with his WCS OCR rims, I was drilling my own Weinmann blanks in the
late 70's. It works.

paddler-<< They (those that make them) say that Off Center rims make a stronger wheel --sounds good
to me... but what are the negatives, if any? >><BR><BR>

I think the only negatives is that some makers, knowing the rim design is a good one, make them a
wee bit too light for my taste. I would love to see some beefier rims also be offset.

But the idea is a good one, making the left side spoke tension higher in relation to the right.

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

D. Cockman said:

They (those that make them) say that Off Center rims make a stronger wheel --sounds good to me...
but what are the negatives, if any? If this has already been talked to death, I'm sorry, please
direct me to the info. Thanks Darrel

It is a good idea to reduce the imbalance between the spoke tensions so it is going in the right
direction. The only problem I see with it is that no one makes narrow (21mm or smaller) rims with
offset drilling and eyelets. No space, it seems. So, like it or not, brass nipples are called for.
It's not the end of the world, it just removes an option.

Of course, offset drilling won't make a poorly made rim into a good one. It should make a well made
rim a little better, but neither I nor anyone I've spoken with can say how much. One can produce
well built rear wheels with and without offset drilling.

Bontrager Fairlanes are wider rims, with offset drillings and eyelets. I've built with them and like
them. Velocity Aeroheads are narrower rims, without eyelets, and build up into nice wheels too.

Steve Shapiro [email hidden]

Peter wrote: "I think the only negatives is that some makers, knowing the rim design is a good one,
make them a wee bit too light for my taste. I would love to see some beefier rims also be offset."

Ritchey is making a touring/HD version of their OCR rim. One can get it in 32 hole (triple tunnel,
22.5 mm wide).

App

D. Cockman said:

They (those that make them) say that Off Center rims make a stronger wheel --sounds good to me...
but what are the negatives, if any? If this has already been talked to death, I'm sorry, please
direct me to the info.

None that I know of have double eyelets. It could be a clearance issue, especially for 19 mm racing
rims. It would seem reasonable for wider rims like the Fairlane. But Bontrager/Trek cheapo-ed out by
only using single eyelets and increasing weight.

gwhite <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

D. Cockman said:

They (those that make them) say that Off Center rims make a stronger wheel --sounds good to
me... but what are the negatives, if any? If this has already been talked to death, I'm sorry,
please direct me to the info.

None that I know of have double eyelets. It could be a clearance issue, especially for 19 mm
racing rims. It would seem reasonable for wider rims like the Fairlane. But Bontrager/Trek
cheapo-ed out by only using single eyelets and increasing weight.

Any opinions on the use of a 2:1 spoking pattern (e.g., 16 spokes on the right side, 8 on the left)
to even the tension between the two sides?

Nigel Grinter

Qui si parla Campagnolo said:

For Tom to make a 'touring' rim in 32 hole is folly. Why not 36? Those pesky 4 spokes weigh a
whopping 28 grams.

... and don't forget the rim is lighter with those holes in it. :-)
--
David Damerell <[email hidden]> Kill the tomato!

Qui si parla Campagnolo said:

Pete-<< Ritchey is making a touring/HD version of their OCR rim. One can get it in 32 hole (triple
tunnel, 22.5 mm wide). >><BR><BR>

For Tom to make a 'touring' rim in 32 hole is folly. Why not 36? Those pesky 4 spokes weigh a
whopping 28 grams.

I thought that was really weird too.

[email hidden] (Qui si parla Campagnolo) wrote in message
news:<[email hidden]>...

Quoted message said:

Nigel-<< Any opinions on the use of a 2:1 spoking pattern (e.g., 16 spokes on the right side, 8 on
the left) to even the tension between the two sides? >><BR><BR>

It doesn't equal the tension tho. silly way to make a wheel, IMHO-

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

True, but it does raise the tension of the spokes on the non-drive side, making it much less likely
they will loosen/fatigue in use.

Qui si parla Campagnolo said:

Pete-<< Ritchey is making a touring/HD version of their OCR rim. One can get it in 32 hole (triple
tunnel, 22.5 mm wide). >><BR><BR>

For Tom to make a 'touring' rim in 32 hole is folly. Why not 36? Those pesky 4 spokes weigh a
whopping 28 grams.

Ritchey apparently doesn't believe in anything more than 32 spokes:

ritcheylogic.comrims.pdfOpen ↗

They do apparently believe in OCR. Their entire line is available with it now.

Wouldn't it make more sense for MTB wheels to have 36? A lot of them do take quite a bit of abuse
off road. Spoke count is also related to air resistance but at the lower average speeds of
off-roading I would think this would not matter.

Velocity's OC road rims are available with 36 but they're only 20mm wide. They also have an OC MTB
rim--available with 36 of course.

Fairlanes are only available with 32 or 48 through most sources though apparently you can get them
with 36 from Rivendell. I'm not sure why they wouldn't just make these in 36 hole normally. The
Fairlane seems like a good choice for touring.

Are there any other off-center rims out there?

--Bill Davidson
--
Please remove ".nospam" from my address for email replies.

I'm a 17 year veteran of usenet -- you'd think I'd be over it by now

(Nigel Grinter) said:

[email hidden] (Qui si parla Campagnolo) wrote in message
news:<[email hidden]>...

Quoted message said:

Nigel-<< Any opinions on the use of a 2:1 spoking pattern (e.g., 16 spokes on the right side, 8
on the left) to even the tension between the two sides? >><BR><BR>

It doesn't equal the tension tho. silly way to make a wheel, IMHO-

True, but it does raise the tension of the spokes on the non-drive side, making it much less likely
they will loosen/fatigue in use.

I think the theory for having unequal number of spokes on easch side of the rear wheel is sound.
However, there are certain practical limitations that might mean it will be difficult to achieve.

For a start you need a rim with the number of spoke holes in it divisible by three.

If you use a 36 hole rim, that means you will have 24 spokes on the drive side of the wheel and 12
on the other. That means you will need a hub suitable for a 48 spoke rear wheel to build the wheel.
They are not easy to get. Anyone know if one exists for a slide on cluster system?

You could use a 24 hole rim. That would mean 16 spokes on the drive side and only 8 spokes on the
NDS. A rim with only eight spokes on one side does sound sound to me like a recipe for reliability.

SNOOPY

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"dianne_1234" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Shimano sells tanem hubs in 48 holes. Probably some spacers on the left could be removed to bring
OLD close to 130mm.

Nope. I tried that. More like 138mm minimum because of the shape of the cones/caps

--
Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971

(Snoopy) te**yson@caverock.*et.*z.*is'n' wrote in message
news:<[email hidden]>...

Quoted message said:

(Nigel Grinter) said:

[email hidden] (Qui si parla Campagnolo) wrote in message
news:<[email hidden]>...

Quoted message said:

Nigel-<< Any opinions on the use of a 2:1 spoking pattern (e.g., 16 spokes on the right side, 8
on the left) to even the tension between the two sides? >><BR><BR>

It doesn't equal the tension tho. silly way to make a wheel, IMHO-

True, but it does raise the tension of the spokes on the non-drive side, making it much less
likely they will loosen/fatigue in use.

I think the theory for having unequal number of spokes on easch side of the rear wheel is sound.
However, there are certain practical limitations that might mean it will be difficult to achieve.

For a start you need a rim with the number of spoke holes in it divisible by three.

If you use a 36 hole rim, that means you will have 24 spokes on the drive side of the wheel and 12
on the other. That means you will need a hub suitable for a 48 spoke rear wheel to build the
wheel. They are not easy to get. Anyone know if one exists for a slide on cluster system?

You could use a 24 hole rim. That would mean 16 spokes on the drive side and only 8 spokes on the
NDS. A rim with only eight spokes on one side does sound sound to me like a recipe for
reliability.

SNOOPY

I can only speak from my own (very limited) experience: I have two sets of Speed Dream wheels build
with an 8:16 left:right spoking pattern and both have been maintenance-free over 3 years of varied
use, including racing.

A further limitation on this type of pattern is that you probably shouldn't use rims on which the
spoke holes are offset alternately left and right to accomodate spokes from the left and right hub
flanges. If you use the 1:2 spoking pattern on a rim with offset, half the spokes will be coming
from the 'wrong' side of the rim, and I don't think this would be a good idea.

Nigel Grinter

A Muzi said:

"dianne_1234" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Shimano sells tanem hubs in 48 holes. Probably some spacers on the left could be removed to bring
OLD close to 130mm.

Nope. I tried that. More like 138mm minimum because of the shape of the cones/caps

It would be nice to find a 130mm hub cassette with more than 36 spokes. I have been toying with the
idea of getting a 24-spoke hub and a drill. Yeah, I know it would void the warrantee. It would be
saner with a large-flange hub, but those don't exist any more, either.

--

David L. Johnson

__o | And though I have the gift of prophecy, and understand all _`\(,_ | mysteries, and all
knowledge; and though I have all faith, so (_)/ (_) | that I could remove mountains, and have not
charity, I am nothing. [1 Corinth. 13:2]

"A Muzi" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

"dianne_1234" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Shimano sells tanem hubs in 48 holes. Probably some spacers on the left could be removed to
bring OLD close to 130mm.

Nope. I tried that. More like 138mm minimum because of the shape of the cones/caps

Maybe mine's different. I have a 145mm FH-HF07 with 14mm of spacers on the left side.