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New invention. Hole less rim



 
 
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  #11  
Old August 17th 05, 04:52 PM
joemarshall
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Default New invention. Hole less rim


more here

http://www.velocitywheels.com/zvino.htm

It looks like the inserts hold a nipple in them, so you may be able to
unscrew a broken spoke from the nipple and rescrew in a new one. Maybe
without the bend at the nipple, you've got less chance of breaking that
end of the spoke than at the hub. Supposedly the load is spread over a
larger area of the rim by the way the spokes are attached, does that
make any difference?

Joe


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  #12  
Old August 17th 05, 06:14 PM
U-Turn
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Default New invention. Hole less rim


-Originally posted by johnfoss-*
the purpose of this design is to prevent air leaking through the spoke
holes when using tubeless tires. The benefits for "regular" tires may
not be as apparent.*

This benefit is deceptive; the proper rim strip does just as well with
the advantage of being much lighter than the corresponding metal.


joemarshall wrote:
*more here

http://www.velocitywheels.com/zvino.htm

It looks like the inserts hold a nipple in them, so you may be able to
unscrew a broken spoke from the nipple and rescrew in a new one. *

But how do you get the inserts out to change a nipple?


*
Maybe without the bend at the nipple, you've got less chance of
breaking that end of the spoke than at the hub. *

Actually the bend for a typical 700c wheel is very very slight anyway.
And that's not where spokes break, they break at the 90 degree bend near
the head, due to fretting, usually from an undertensioned wheel.

*
Supposedly the load is spread over a larger area of the rim by the way
the spokes are attached, does that make any difference? *

Normal good-quality rims have either thickened metal around the spoke
hole, or make use of eyelets, which both accomplish the same thing.
Ditto for the wide-flange nipples I use on the Coker wheels.


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  #13  
Old August 17th 05, 07:17 PM
jagur
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Default New invention. Hole less rim


i want to try those Velo plugs.


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  #14  
Old August 17th 05, 08:19 PM
unicus
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Default New invention. Hole less rim


An interesting concept for spoke attachment, though I've seen similar
methods for attaching other stuff (that works well), but there's not
nearly enough information for anything other than a cursory evaluation.
I guess they won’t want to give to much info out (patent pending). I've
always considered the traditional method of spoke to rim and spoke to
hub attachment, though perfectly functional, a little antiquated.


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  #15  
Old August 18th 05, 07:54 AM
ChangingLINKS.com
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Default New invention. Hole less rim


U-Turn wrote:
*It is an interesting idea because of the ability to have different
numbers of spokes.

It won't make the rim lighter, because it has a continuous spoke-rim
interface, rather than selectively placed ones.

It also won't support higher tension, one of the primary aspects of
wheel strength. The limiting factor in spoke tension, for the better
rims, is not hole strength, but brace angle and the rim's torsional
stiffness. These attributes are unaffected by the new idea.

Additionally, it appears to make replacing a nipple/spoke impossible
without rebuilding the entire wheel. This is a no-go item in my
mind.

It multiplies the number of parts required to build a wheel.

The only real advantage I see is that it allows the nipple to pivot to
follow the spoke line, but this is not much of an advantage for larger
wheels, especially 3x.

Oh, and it provides lots of advertising space!

Overall -- two thumbs down. *



I think it goes . . .

First they ridicule.
Then they violently oppose.
Then they honor.


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  #16  
Old August 18th 05, 02:04 PM
U-Turn
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Default New invention. Hole less rim


ChangingLINKS.com wrote:
*I think it goes . . .

First they ridicule.
Then they violently oppose.
Then they honor. *

New ideas are great. Some of them make a lot of money. A very, very
few of them stand the test of time. Many ideas that do not last, make a
lot of money anyway because people buy something that is "different".

In this case, the inventor appears to be trying to solve a problem that
either 1) does not exist, or 2) only exists for manufacturers. In this
implementation, it appears to add several disadvantages to the user.

It may be a stepping-stone to other implementations that revolutionize
the bicycle wheel. Or, it may be yet another dead end. Or, it may
spark yet another idea in the inventor's or someone else's mind.

My post above was intended neither to ridicule, oppose, or honor. It
was me trying to analyze the invention from a technical point of view
based on scanty evidence. If you send me the money, I'll build you a
wheel using one of those rims - if they are available as rims only!


--
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  #17  
Old August 18th 05, 02:45 PM
S_Wallis
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Default New invention. Hole less rim


U-Turn wrote:
*...
In this case, the inventor appears to be trying to solve a problem
that either 1) does not exist, or 2) only exists for manufacturers.
In this implementation, it appears to add several disadvantages to the
user.
... *

Yes, I think the only immediately significant benefit is that it
eliminates the secondary operation of drilling the spoke holes in the
extrusion before it is rolled into a rim. It will roll more smoothly
without holes also. Both of those things benefit the manufacturer.
At first the idea of being easier to seal for tubeless sounds great.
But, as Dave said, I think rim strips do a good job of that. The
biggest leakage problems seem to be at the tire bead.

It may catch on but it will start with the most popular sizes in the
bicycle market, most of which we don't use anyway.

I do think it looks cool though.

Scott


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