Cycling Equipment · Public discussion

Hozan spoke threader

Started by Doug Goncz · · Last activity · 3 posts · 731 views

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Cycling Equipment
Published
20 August 2004
Last activity
21 August 2004
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Doug Goncz
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  1. Hello, all!

    Before threading stainless spokes with the Hozan C-700 spoke threader, which
    says in the instructions that it works on stainless spokes and comes preset for
    14 gage spokes, do you have to anneal the spoke by heating it red in a torch
    flame and allowing it to cool slowly?

    I say this because I am familiar with the work hardening produced in many
    metals by cold working, e.g. wire drawing, and wonder if my seemingly
    inconsistent results with this threader is due to it being provided with steel
    wheels instead of carbide, or whether I should be annealing the spoke ends
    first.

    This threader is supposed to have carbide wheels for threading staineless
    spokes, isn't it?

    I got mine from Alfred E. Bike for $75 and I can't believe it has the proper
    carbide wheels. It seems like they replaced the head. As shipped, it wasn't
    even set for 14 gage spokes! The adjusting nut was totally slacked off.

    I am looking at about two hours of ruining one test spoke after another as I
    sneak up on the 14 gage setting by adjusting the nut the recommended 5 degrees
    at a time, one-sizth of the arc between the point of a nut and the flat of a
    nut. That is, there are six flats and six points marking 12 points around the
    circle, but the instructions say not to adjust the nut more than 1/72 of a
    circle at a time. What a freakin' hassle.

    Anyway, what I am most interested is in the carbide wheels. They'd be dark
    grey, wouldn't they? Mine are light silver grey and I am almost certain they
    are steel.

    I should test one with a magnet, but it'd better be a mighty clean magnet, or
    I'll get filings on the wheel and get them crammed into the spoke surface. Yuk.
    Just touching the steel wheel with a magnet might magnetize it, causing it to
    attract iron and steel filings, ruining the threader operation.

    Yours,
    Doug Goncz ( ftp://users.aol.com/DGoncz/incoming )
    Student member SAE for one year.
    I love: Dona, Jeff, Kim, Mom, Neelix, Tasha, and Teri, alphabetically.
    I drive: A double-step Thunderbolt with 657% range.

  2. ( Doug Goncz ) said:

    Before threading stainless spokes with the Hozan C-700 spoke threader, which
    says in the instructions that it works on stainless spokes and comes preset for
    14 gage spokes, do you have to anneal the spoke by heating it red in a torch
    flame and allowing it to cool slowly?

    No. Don't do that-- spoke threads are cold formed on fully hardened
    stainless steel wire. (FYI, most stainless steel is not heat
    hardenable and anneals fully regardless of cooling rate.)

    Quoted message said:

    I say this because I am familiar with the work hardening produced in many
    metals by cold working, e.g. wire drawing, and wonder if my seemingly
    inconsistent results with this threader is due to it being provided with steel
    wheels instead of carbide, or whether I should be annealing the spoke ends
    first.

    I expect if you anneal first, you will get beautiful threads on spokes
    that break quickly with use.

    Quoted message said:

    Anyway, what I am most interested is in the carbide wheels. They'd be dark
    grey, wouldn't they? Mine are light silver grey and I am almost certain they
    are steel.

    I should test one with a magnet,

    Cemented carbide is composed of some 8% to 10% metallic cobalt, which
    is strongly magnetic. I find that the attraction between a NbFeB
    magnet and carbide tooling is approximately half as strong as between
    the same magnet and M42 molybdenum-cobalt tool steel, and roughly
    one-quarter as strong as its attraction to M2 molybdenum-tungsten
    (HSS) tool steel.

    Chalo Colina

  3. Hello, all!

    Without a working spoke threader, I decided to try the OEM spokes from
    the smaller flange hub which was laced three cross, laced onto the
    bigger hub four cross.

    It worked!

    Er, well, it came close. Spoke penetration is low, not full, but the
    wheel is rideable.

    I will thread a spoke into the nipples from the outside, using it as a
    measuring gage, and buy slightly longer spokes that will fit right,
    instead of shortening the OEM spokes and threading them.

    I will return the spoke threader if AE Bike will take it back. I
    believe I have a reasonable case. It's supposed to work right out of
    the box.

    By the way, I did four cross with no cross, that is, side to side four
    cross, but on each side, all "pull" or "push" spokes. I did this on my
    Peugot and it has worked just fine for hundreds of miles. It all
    depends on hub windup, and this is so small it is simply not
    measureable. The hub is effectively a rigid body.

    This makes plucking spokes easier, to even tension during building
    since they vibrate freely, and makes replacing spokes easier, but does
    allow vibration during riding, which can loosen spokes. I will be
    adding shell covers to make an aero disc wheel soon, of clear 0.020
    inch thick Lexan. These will damp the vibration.

    I'm off to ride close to home today.

    Yours,

    Doug Goncz
    Bless me, father, for I have sinned.
    It has been 7 1/2 hours since my last cigarette.

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