how many used but still pretty round non-aero rims are discarded?

Hi All,

I used to post here and to R.B.M. a bunch but it's been a long, long time since my last post. This message would seem more relevant to R.B.M. but in my absence that group seems to have died. So...

I have a product idea that requires a round structural element. Plastic hula hoops work but they are not rigid enough. Bicycle rims work great. I've looked into having something manufactured but the cost seems excessive, and wouldn't it be something if I could find a way to recycle bicycle rims. The best candidates are 700c and 27" non-aero alloy road rims (tubular would be the very best, being the most minimal). MTB rims would work, the 29 inchers probably being more preferable. Of course some damage is expected....minor cracks and small dents would be OK, the thing just needs to be non-pretzeled and unbroken.

In the event I can sell my product idea...may I please ask of anyone in the know to supply estimates of how many candidate rims they discard? Please include location, too. Also what the cost would be to remove the spokes / hub and stock the rim for sale? In other words, what would you want to charge for the rims?

If the replies are considered irrelevant to the group (I would classify them as such) please email me: .

Thanking you very much with the kindest regards,

Rob D'Entremont
Richardson, Texas

27" tires were made in one batch then sold out of warehouses: 1975-1990 ?

then 700c came along.

the tide went out on 27"

steel was abandoned for aluminum....improved metallurgy

then one day in the late 1990's...the 27" tires were gone.

we filled dumpsters with 27" rims.

1996 ?

ask the LBS....

https://www.google.com/maps/search/b.../data=!3m1!4b1

On Thu, 9 Jun 2016 16:55:25 -0700 (PDT), Rob
wrote:

Hi All,

I used to post here and to R.B.M. a bunch but it's been a long, long time since my last post. This message would seem more relevant to R.B.M. but in my absence that group seems to have died. So...

I have a product idea that requires a round structural element. Plastic hula hoops work but they are not rigid enough. Bicycle rims work great. I've looked into having something manufactured but the cost seems excessive, and wouldn't it be something if I could find a way to recycle bicycle rims. The best candidates are 700c and 27" non-aero alloy road rims (tubular would be the very best, being the most minimal). MTB rims would work, the 29 inchers probably being more preferable. Of course some damage is expected...minor cracks and small dents would be OK, the thing just needs to be non-pretzeled and unbroken.

In the event I can sell my product idea...may I please ask of anyone in the know to supply estimates of how many candidate rims they discard? Please include location, too. Also what the cost would be to remove the spokes / hub and stock the rim for sale? In other words, what would you want to charge for the rims?

If the replies are considered irrelevant to the group (I would classify them as such) please email me: .

Thanking you very much with the kindest regards,

Rob D'Entremont
Richardson, Texas

I don't know the quantity you want but for, say 100 pieces, most of
the Chinese makers will sell at reasonable prices. I see single wall
alloy rims for $1.75 (but in lots of 1,000)

see http://m.made-in-china.com/hot-china...cycle_Rim.html for
examples.
--
cheers,

John B.

On Thu, 9 Jun 2016 16:55:25 -0700 (PDT), Rob
wrote:

Hi All,

I used to post here and to R.B.M. a bunch but it's been a long, long time since my last post. This message would seem more relevant to R.B.M. but in my absence that group seems to have died. So...

I have a product idea that requires a round structural element. Plastic hula hoops work but they are not rigid enough. Bicycle rims work great. I've looked into having something manufactured but the cost seems excessive, and wouldn't it be something if I could find a way to recycle bicycle rims. The best candidates are 700c and 27" non-aero alloy road rims (tubular would be the very best, being the most minimal). MTB rims would work, the 29 inchers probably being more preferable. Of course some damage is expected...minor cracks and small dents would be OK, the thing just needs to be non-pretzeled and unbroken.

In the event I can sell my product idea...may I please ask of anyone in the know to supply estimates of how many candidate rims they discard? Please include location, too. Also what the cost would be to remove the spokes / hub and stock the rim for sale? In other words, what would you want to charge for the rims?

If the replies are considered irrelevant to the group (I would classify them as such) please email me: .

Thanking you very much with the kindest regards,

Rob D'Entremont
Richardson, Texas

I answered this once but... Have you enquired at commercial sheet
metal shops about bending up some hoops from tubing. You could join
the ends with a plug. It would depend on wall thickness and diameter
but a power bender that uses an internal mandrel to prevent that tube
from collapsing will certainly bend a bicycle rim size hoop in 1/2
inch tubing.

But I don't know about costs :-)
--
cheers,

John B.

On 6/9/2016 6:55 PM, Rob wrote:
Hi All,

I used to post here and to R.B.M. a bunch but it's been a long, long time since my last post. This message would seem more relevant to R.B.M. but in my absence that group seems to have died. So...

I have a product idea that requires a round structural element. Plastic hula hoops work but they are not rigid enough. Bicycle rims work great. I've looked into having something manufactured but the cost seems excessive, and wouldn't it be something if I could find a way to recycle bicycle rims. The best candidates are 700c and 27" non-aero alloy road rims (tubular would be the very best, being the most minimal). MTB rims would work, the 29 inchers probably being more preferable. Of course some damage is expected...minor cracks and small dents would be OK, the thing just needs to be non-pretzeled and unbroken.

In the event I can sell my product idea...may I please ask of anyone in the know to supply estimates of how many candidate rims they discard? Please include location, too. Also what the cost would be to remove the spokes / hub and stock the rim for sale? In other words, what would you want to charge for the rims?

If the replies are considered irrelevant to the group (I would classify them as such) please email me: .

Thanking you very much with the kindest regards,

Rob D'Entremont
Richardson, Texas


Labor to snip out spokes and clean the rims, combined with
transit charges, are going to add up with any serious
quantity. That said, it's a good approach for
test-marketing. Your samples could be spray-painted used
rims from local shops.

If your product proves appealing and your numbers seem to
work, having a run of rims made with no spoke piercings and
minimal finish will be cheaper than you think.

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

On 6/9/2016 11:08 PM, John B. wrote:
On Thu, 9 Jun 2016 16:55:25 -0700 (PDT), Rob
wrote:

Hi All,

I used to post here and to R.B.M. a bunch but it's been a long, long time since my last post. This message would seem more relevant to R.B.M. but in my absence that group seems to have died. So...

I have a product idea that requires a round structural element. Plastic hula hoops work but they are not rigid enough. Bicycle rims work great. I've looked into having something manufactured but the cost seems excessive, and wouldn't it be something if I could find a way to recycle bicycle rims. The best candidates are 700c and 27" non-aero alloy road rims (tubular would be the very best, being the most minimal). MTB rims would work, the 29 inchers probably being more preferable. Of course some damage is expected...minor cracks and small dents would be OK, the thing just needs to be non-pretzeled and unbroken.

In the event I can sell my product idea...may I please ask of anyone in the know to supply estimates of how many candidate rims they discard? Please include location, too. Also what the cost would be to remove the spokes / hub and stock the rim for sale? In other words, what would you want to charge for the rims?

If the replies are considered irrelevant to the group (I would classify them as such) please email me: .

Thanking you very much with the kindest regards,

Rob D'Entremont
Richardson, Texas

I answered this once but... Have you enquired at commercial sheet
metal shops about bending up some hoops from tubing. You could join
the ends with a plug. It would depend on wall thickness and diameter
but a power bender that uses an internal mandrel to prevent that tube
from collapsing will certainly bend a bicycle rim size hoop in 1/2
inch tubing.

But I don't know about costs :-)


Good thought.
I once had a half dozen round 48" diameter hoops made from
conduit by a plumber. Dirt cheap and very round.

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

On Thursday, June 9, 2016 at 10:52:26 PM UTC-4, wrote:
27" tires were made in one batch then sold out of warehouses: 1975-1990 ?

then 700c came along.

the tide went out on 27"

steel was abandoned for aluminum....improved metallurgy

then one day in the late 1990's...the 27" tires were gone.

we filled dumpsters with 27" rims.

1996 ?

ask the LBS....

https://www.google.com/maps/search/b.../data=!3m1!4b1

nnnnnnnnnnnnnnnnnnn

industry agreement forcing buying new 700c compnents at uh $350 ? per....

then 5-6 years later 27" tires reappeared in small quantities.

On Thu, 9 Jun 2016 16:55:25 -0700 (PDT), Rob
wrote:

I have a product idea that requires a round structural element.
Plastic hula hoops work but they are not rigid enough.
Bicycle rims work great. I've looked into having something
manufactured but the cost seems excessive, and wouldn't it be
something if I could find a way to recycle bicycle rims.
The best candidates are 700c and 27" non-aero alloy road
rims (tubular would be the very best, being the most minimal).
MTB rims would work, the 29 inchers probably being more preferable.

If you're going to corner the market for used bicycle rims, you had
better hurry up because ham radio operators (like me) are stockpiling
old rims building magnetic loop antennas:
https://www.google.com/#q=bicycle+rim+magnetic+loop+antenna
https://radio.g4hsk.co.uk/projects/magnetic-loop-antenna/
https://s3.amazonaws.com/files.qrz.com/g/dl2hrg/k_MLoop_5.jpg
There are some tricks to selecting a rim suitable for an antenna, but
I'm sworn to secrecy. As you might suspect, bigger is better for such
antennas. Also, hollow bicycle rims make tolerable 60KHz WWVB
shielded loop antennas.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Thursday, June 9, 2016 at 9:52:26 PM UTC-5, wrote:
27" tires were made in one batch then sold out of warehouses: 1975-1990 ?

......
ask the LBS....

https://www.google.com/maps/search/b.../data=!3m1!4b1

Thank you!

Rob

On Friday, June 10, 2016 at 9:02:01 AM UTC-7, Jeff Liebermann wrote:
On Thu, 9 Jun 2016 16:55:25 -0700 (PDT), Rob
wrote:

I have a product idea that requires a round structural element.
Plastic hula hoops work but they are not rigid enough.
Bicycle rims work great. I've looked into having something
manufactured but the cost seems excessive, and wouldn't it be
something if I could find a way to recycle bicycle rims.
The best candidates are 700c and 27" non-aero alloy road
rims (tubular would be the very best, being the most minimal).
MTB rims would work, the 29 inchers probably being more preferable.

If you're going to corner the market for used bicycle rims, you had
better hurry up because ham radio operators (like me) are stockpiling
old rims building magnetic loop antennas:
https://www.google.com/#q=bicycle+rim+magnetic+loop+antenna
https://radio.g4hsk.co.uk/projects/magnetic-loop-antenna/
https://s3.amazonaws.com/files.qrz.com/g/dl2hrg/k_MLoop_5.jpg
There are some tricks to selecting a rim suitable for an antenna, but
I'm sworn to secrecy. As you might suspect, bigger is better for such
antennas. Also, hollow bicycle rims make tolerable 60KHz WWVB
shielded loop antennas.


OT THREAD HIJACK ALERT (with apologies to Sir):

So Jeff, I have a FM tuner/reception question. I have a little Pro-Ject Tuner Box: http://www.musicdirect.com/p-115288-...ner-box-s.aspx

It has a Belling-Lee (PAL) plug on the back, and I use an F adapter. http://www.showmecables.com/product/...e-Adapter.aspx

Attaching ANY coax (whether or not connected to an antenna) via the F adapter adds a ton of hiss. It sounds better with no antenna at all (although the signal is very weak) -- or the adapter plug is used with just a piece of bare copper wire sticking out the back. If I hook it up to my house antenna (I'm old school, no Comcast -- and the transmission tower is within five miles), it super-noisy. My antenna is in the attic and has UHF and VHF elements. It is not grounded.

Is there some weird shielding issue? I terminated the coax with a standard F plug and believe that I did it right. The same sorts of terminations are working with my TV. I don't see any obvious problems with the F to Belling-Lee adapter.

Thanks.

-- Jay Beattie.