Rear axle nylon nut - Kawasaki Versys Forum
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post #1 of 22 (permalink) Old 11-28-2011, 04:48 PM Thread Starter
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Rear axle nyloc nut

Anybody know the specifications for the rear axle 18mm nut? Such as pitch, etc?
I would like to replace the rear axle castle nut with a nyloc nut, and discard the cotter pin.
Any suggestions on where to purchase this item?
Thanks

Last edited by Pismocycleguy; 11-29-2011 at 12:28 AM.
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post #2 of 22 (permalink) Old 11-28-2011, 05:00 PM
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'Houston I think we have a problem"

I assume you mean a nylock nut. Get ready for an onslaught.

I bought these for my KLR but lost my tools before my first flat and never got to use them.



A web search provides several other variations.

The stock nut is listed as
42045 NUT,CASTLE,18MM 42045-018
on
http://www.cheapcycleparts.com/model...semblies/41071

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Last edited by cmoreride; 11-28-2011 at 06:45 PM.
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post #3 of 22 (permalink) Old 11-28-2011, 05:08 PM
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You probably won't set the atmosphere on fire if you use a nylock nut but I'm not sure it is a good idea to use that kind of nut in this application.

The nut normally needs to be tightened with 80 ft-lbs of torque I believe. If this is to hold a certain tension on the rear assembly and is not just a safety issue (prevent your rear wheel from falling out), then a nylock nut will not be able to reproduce that tension by a long shot; you will strip out the nylon.

In that case just using a regular nut without a cotter pin to secure it seems like a better solution to me, because I don't think that nut would ever come loose when tightened to 80 ft-lbs, but it will be able to be tightened down with the required torque.
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post #4 of 22 (permalink) Old 11-28-2011, 05:16 PM
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Quote:
Originally Posted by Pretbek View Post
You probably won't set the atmosphere on fire if you use a nylock nut but I'm not sure it is a good idea to use that kind of nut in this application.

The nut normally needs to be tightened with 80 ft-lbs of torque I believe. If this is to hold a certain tension on the rear assembly and is not just a safety issue (prevent your rear wheel from falling out), then a nylock nut will not be able to reproduce that tension by a long shot; you will strip out the nylon.

In that case just using a regular nut without a cotter pin to secure it seems like a better solution to me, because I don't think that nut would ever come loose when tightened to 80 ft-lbs, but it will be able to be tightened down with the required torque.
Yep Id say the use the regular nut and the cotter pin you dont want to take that kind of chance.
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post #5 of 22 (permalink) Old 11-28-2011, 05:23 PM
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Why??????????
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post #6 of 22 (permalink) Old 11-28-2011, 06:06 PM
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Most of my dirtbikes don't use a cotter pin. Not sure why a nylock wouldn't work. I've never had a axle nut back off after proper installation.

1974 Kawasaki F11
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post #7 of 22 (permalink) Old 11-28-2011, 06:32 PM
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Quote:
Originally Posted by kenr74 View Post
Most of my dirtbikes don't use a cotter pin. Not sure why a nylock wouldn't work. I've never had a axle nut back off after proper installation.
My CBRs have locking type nuts and no cotter pins. If its good enough for Honda should be OK on a Kawasaki. The Honda nut is not nylon though. Its a crimped metal nut if I remember correctly.

ST1300, Versys, SV650S

Last edited by gti20vturbo; 11-28-2011 at 06:36 PM.
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post #8 of 22 (permalink) Old 11-28-2011, 07:57 PM Thread Starter
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Quote:
Originally Posted by gti20vturbo View Post
My CBRs have locking type nuts and no cotter pins. If its good enough for Honda should be OK on a Kawasaki. The Honda nut is not nylon though. Its a crimped metal nut if I remember correctly.
Looks like my spelling checker on my iPad over corrected "nyloc" to "nylon"! I'm still getting use to all of the automatic features.
I know that Dual Star offers locking axle nuts for KLR650's, KTM's and Suzuki V-Srroms. So that must have some merit!
I'll keep searching!
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post #9 of 22 (permalink) Old 11-28-2011, 11:35 PM
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I'm with the guys who say to use the metal lock-nuts, not the "Nylocks". The metal ones are re-usable, and I had a set on my KLR for pretty much EVERYTHING. The local hardware store here in Florence, AZ, sells 'em.

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post #10 of 22 (permalink) Old 11-29-2011, 12:18 AM
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M18 X 1.5 (fine thread)

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post #11 of 22 (permalink) Old 11-29-2011, 12:25 AM Thread Starter
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Question BMW Motorcycles

Over the weekend I noticed that the new, chain driven, BMW Motorcycles do not use a cotter key on the rear axle bolt. They all had a nut that looked very much like a nyloc nut. I will do some further research and find out what type of locking nut they are using on their bikes.
The above pictures of a steel lock nut do not look anything like what BMW is using.

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post #12 of 22 (permalink) Old 11-29-2011, 12:30 AM Thread Starter
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Question Pitch of axle threads

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Originally Posted by invader View Post
M18 X 1.5 (fine thread)
I think that the rear axle has a coarse pitch of 2.5?
/Users/johncole/Desktop/Locking_Axle_Nuts.gif
/Users/johncole/Desktop/AXLE_NUTS.JPG

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Last edited by Pismocycleguy; 11-29-2011 at 12:39 AM.
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post #13 of 22 (permalink) Old 11-29-2011, 12:43 AM
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It is in fact M18 X 1.5 as measured.

Suzuki flanged metal lock nut # 08319-3118A, as used on 2008+ DL650 V-Strom.

(used) http://www.ebay.com/itm/NUT-swing-ar...item518a7057ec

Last edited by invader; 11-29-2011 at 12:50 AM.
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post #14 of 22 (permalink) Old 11-29-2011, 12:45 AM
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Just remember nylock nuts are only good once. You need to replace them every time you remove them.


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post #15 of 22 (permalink) Old 11-29-2011, 06:39 AM
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The old adage applies: If it ain't broke, don't fix it. IMHO
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post #16 of 22 (permalink) Old 11-29-2011, 07:35 PM Thread Starter
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Talking Self-locking flanged nut

Quote:
Originally Posted by invader View Post
It is in fact M18 X 1.5 as measured.

Suzuki flanged metal lock nut # 08319-3118A, as used on 2008+ DL650 V-Strom.

(used) http://www.ebay.com/itm/NUT-swing-ar...item518a7057ec
This is what I am using,
M18 x 1.5p


Saves the hassle of messing with a cotter key and trying to line up the notches in the castle nut. Don't need to keep buying cotter keys.

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post #17 of 22 (permalink) Old 11-29-2011, 07:38 PM Thread Starter
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Question Why not?

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Why??????????
Because I can and I want to!
Much neater, cleaner, and easier to apply and remove!

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post #18 of 22 (permalink) Old 11-29-2011, 07:48 PM
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how do they function?
obviously they have some locking mechanism correct?

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post #19 of 22 (permalink) Old 11-29-2011, 07:53 PM Thread Starter
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Talking

Quote:
Originally Posted by cmoreride View Post
how do they function?
obviously they have some locking mechanism correct?
They have a thin steel rim where you would find nylon on a nyloc nut.
It must place tension on the threads.

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post #20 of 22 (permalink) Old 11-29-2011, 11:23 PM
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IF you're really anal - after you put locknuts on, drop a cotter-pin thru the hole in the unlikely event the nut starts to back-out, which keeps it from departing.

Ed
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