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How do you measure and cut spokes?

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How do you measure and cut spokes?

Old 12-11-17, 02:51 PM
  #1  
Badzilla
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How do you measure and cut spokes?

Specifically, what measuring tool should I buy to measure the spokes for cutting?

If you have a well tested method for measuring and cutting, please let me know that too.

Currently I have no metric measure except for a caliper that is too short.
Also, I have no other sort of measuring tool that would work, metric or not.

Thanks.
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Old 12-11-17, 03:07 PM
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spoke ruler
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Old 12-11-17, 03:28 PM
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you don't just cut spokes...you need to cut an thread, there are specialized tools for that
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Old 12-11-17, 03:35 PM
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Originally Posted by squirtdad View Post
you don't just cut spokes...you need to cut an thread, there are specialized tools for that
Ideally, the threads are *rolled*, which makes them stronger and less likely to break.
This tool does that: https://www.niagaracycle.com/categor...hoC6qIQAvD_BwE
Steve
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Old 12-11-17, 04:33 PM
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I use a ruler to measure length, and I leave cutting/rolling the threads to the folks who know what they're doing.
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Old 12-11-17, 04:51 PM
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As alluded to above - you CANNOT cut spoke threads - they will not work with commercially available nipples.



The one of the left is rolled, the one on the right is cut; starting with the same diameter material. A cut thread will have very little to no thread engagement in a standard nipple.
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Old 12-11-17, 08:17 PM
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Originally Posted by nfmisso View Post
A cut thread will have very little to no thread engagement in a standard nipple.
Also, the metal is strengthened by the rolling process (see attached image). I've also been under the impression that the valleys in rolled threads may not be as sharp as those in cut threads, and therefore less likely to be stress risers.
Steve
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Cut vs Rolled Threads.jpg (41.0 KB, 233 views)
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Old 12-11-17, 09:51 PM
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FYI, assuming you are talking about using a threader such as the Hozan/Cyclus, standard practice is to

1) use a pair of high leverage side cutters or small bolt cutters to cut the spoke/blank 1mm longer than you are targeting, and

2) use a grinding wheel to bring the peak flat and grind a slight bevel on the edge (which helps the rolling head engage properly). Keep the end of the spoke cool with a cup of water while grinding.

3) keep the rolling head lubricated with a drop of oil every couple of spokes. The large nut in the tool should be turned down until threads are rolled just enough to easily thread in a spoke nipple. This setting will remain the same, assuming you are using all the same make of spoke.

If you are cutting more than a few spokes at a time, you'll quickly come to realize its shortcomings. In many cases, it's worth your time alone to buy spokes already cut to size from a seller that does not charge extra for the service.

Of course, if you happen to have super deep pockets and are talking about a Phil or Morizumi, operation is greatly simplified...
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Old 12-12-17, 06:45 AM
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This Park Tool ruler is nice and will measure bearing balls as well.
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SBC-1_001.jpg (116.8 KB, 209 views)
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Old 12-12-17, 07:02 AM
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Originally Posted by shelbyfv View Post
This Park Tool ruler is nice and will measure bearing balls as well.
it seems that Park makes a tool for everything on a bike, whether there is actually a need for it or not. Having said that, I do have more than a few Park tools and they work well.
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Old 12-12-17, 07:08 AM
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For basic bicycle questions like this you only need to go to SheldonBrown, specifically "Measurements for Spoke Length Calculations" and it will show you all you need to know to get the length. As noted above I don't understand "cutting".
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Old 12-12-17, 10:24 AM
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Park spoke ruler, Phil Wood cutter.
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Old 12-12-17, 11:11 AM
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Longer spoke, roll the threads further*, install spoke true wheel then cut off what sticks up over the nip head,
and will make a flat tire, from the inside out.

Hozan thread rolling tool will roll the threads down, as far as you want.
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Old 12-12-17, 02:03 PM
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Originally Posted by sweeks View Post
Ideally, the threads are *rolled*, which makes them stronger and less likely to break.
This tool does that: https://www.niagaracycle.com/categor...hoC6qIQAvD_BwE
Steve
Or this one, if you want to cut to length and roll threads in a single operation:


https://www.philwood.com/products/tools/spokemach.php

Have your credit card ready …
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Old 12-12-17, 02:28 PM
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Note how they don't mention the price, they are a major investment for a business..

10 fold of the Hozan, at least..
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Old 12-12-17, 03:37 PM
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Originally Posted by JohnDThompson View Post
Have your credit card ready …
The operator's manual alone is $75!!
Steve
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Old 12-12-17, 06:51 PM
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I should have stated my question clearly. Some did guess what I meant.

I need to measure the spokes for cutting (threading comes after cutting). Of course spokes must be a certain length, that length being in millimeters. So I need a tool to help accurately measure and mark the spokes for cutting. I have the famous home user style spoke thread maker (Made in Japan), but that comes after cutting the spokes to length.

I am stuck figuring out how to accurately cut 36 spokes to the same correct length.

Maybe I should have also mentioned the spokes in question are "J bend" (I guess). They bend in the shape of a J where connected to the hub.

I guess the mentioned tool will do (Park Tool Spoke, Bearing, and Cotter Gauge - SBC-1). If it hooks onto the J bend part, it might angle a bit when marking the spoke for cutting, but at least they will all be the same length.

Thanks.
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Old 12-12-17, 06:57 PM
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what a silly question. ever heard the expression "wheelhouse"? it exists because everything about wheelbuilding is very specific for that purpose.

spoke ruler. spoke cutter. nothing less.
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Old 12-12-17, 09:20 PM
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Originally Posted by Badzilla View Post
I am stuck figuring out how to accurately cut 36 spokes to the same correct length.

Maybe I should have also mentioned the spokes in question are "J bend" (I guess).
Spokes like that are measured from the inside of the bend to the end of the threads. You can do it with a ruler.
Then all you have to do is mark them for cutting... maybe make a jig of some kind.
Steve
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Old 12-13-17, 08:52 AM
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Can't you buy spokes the correct length ?
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Old 12-13-17, 10:12 AM
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Prior to acquiring a shop grade spoke threader, I used to measure with a spoke ruler, mark with a sharpie, cut with a diagonal cutter, touch up the tip on a grinder, and roll the threads with a Hozan spoke threader.
That was OK for replacement spokes here and there, but in my business, I need to thread many thousands of spokes per year.
My Morizumi machine has handled that task beautifully for the last five years.
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Old 12-13-17, 10:35 AM
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Originally Posted by Badzilla View Post
Specifically, what measuring tool should I buy to measure the spokes for cutting?

If you have a well tested method for measuring and cutting, please let me know that too.

Currently I have no metric measure except for a caliper that is too short.
Also, I have no other sort of measuring tool that would work, metric or not.

Thanks.
Cutting spokes is rarely done at shop level. It's much easier and cheaper to just buy the right size to begin with.

If you bought the wrong size, return them. If you can't return them buy the new, correct size spokes anyway and find another way to get rid of the wrong ones even if you donate them to a co-op.
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Old 12-13-17, 12:15 PM
  #23  
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I have a Park spoke length gauge, but I have to say that I was not all that impressed with it and went back to using my Starrett 12" rule. Basically I measure one spoke (twice) and mark it with a small file then use it to transfer a mark to another flat surface (usually my table saw). Once that is set up, it's pretty easy to measure and mark the rest. I have a Hozan tool, which I bought so I could use up all (hundreds) of the spokes that I have accumulated over the years. I like the tool but to cut and thread 72 spokes for a new set of wheels is a bit of a chore.

Good luck.
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Old 12-13-17, 12:17 PM
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For anyone info . the distance of the threads on a spoke is 10 MM . The Parktool 's ruler is a great one to use .

Last edited by bikeman715; 12-13-17 at 05:53 PM.
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Old 12-13-17, 01:45 PM
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Homebrew01, Moose: Maybe the OP wants the experience (and possible satisfaction) of doing the job himself?
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