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Author Topic: Husky 701 broken top triple clamp.  (Read 712 times)

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Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #20 on: June 07, 2021, 06:59:34 pm »
Same alu nut that tightens the front axle, which is also Alu into steel.

Been using them for years in many KTM's and never a single issue.
Probably some factory mishap and just KTM's luck that it would happen on ZA's own Caucasian-Japanese person.

Jy moet jou blou onderbroek inruil vir 'n witte met 'n rooi kol op.  ;)

 :imaposer:

The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.


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Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #21 on: June 07, 2021, 07:15:44 pm »
I remember Noneking also had a 701 with some factory flaw, swing arm ? Next time take that XT Dakar replica  :deal:
Luckily that nut cant be too expensive and the stem thread should be fine as it's proper steel ?

Yip, new nut arriving this afternoon, R200, and the stem is steel, and fine. :thumleft:

R200! Hul het jou sien aankom.
Ek het juis dieselfde soort nut moes koop vir die 26mm vooras, en dit was Eur7

Ja, dis nie net Yamaha wat ons sien aankom nie. :thumleft: :thumleft:
 

Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #22 on: June 07, 2021, 07:19:04 pm »
Same alu nut that tightens the front axle, which is also Alu into steel.

Been using them for years in many KTM's and never a single issue.
Probably some factory mishap and just KTM's luck that it would happen on ZA's own Caucasian-Japanese person.

Jy moet jou blou onderbroek inruil vir 'n witte met 'n rooi kol op.  ;)

 :imaposer:

The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.

22Nm. And definitely no loctite. It started turning about 20degrees, then seized up. I took about an hour to undo it. Only the front few threads are damaged, because only the front few threads protrude into the stem.
 

Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #23 on: June 07, 2021, 09:11:27 pm »

[/quote]

The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.
[/quote]

22Nm. And definitely no loctite. It started turning about 20degrees, then seized up. I took about an hour to undo it. Only the front few threads are damaged, because only the front few threads protrude into the stem.
[/quote]

Where did you get the 22Nm spec? I have 12Nm? ("Screw, top steering head").
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Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #24 on: June 07, 2021, 11:33:41 pm »


The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.
[/quote]

22Nm. And definitely no loctite. It started turning about 20degrees, then seized up. I took about an hour to undo it. Only the front few threads are damaged, because only the front few threads protrude into the stem.
[/quote]

Where did you get the 22Nm spec? I have 12Nm? ("Screw, top steering head").
[/quote]

It's factory-engraved on the yoke, 17Nm for the fork pinchbolts.
 

Offline paulb

Re: Husky 701 broken top triple clamp.
« Reply #25 on: June 08, 2021, 06:57:49 am »
Oom Daan se sak het die triple clamp geslaan met daai groot val  :3some:
Better to have it and not need it , than to need it and not have it
 

Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #26 on: June 08, 2021, 07:47:40 am »
Oom Daan se sak het die triple clamp geslaan met daai groot val  :3some:

 :biggrin:
 

Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #27 on: June 08, 2021, 07:54:06 am »


The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.
[/quote]

22Nm. And definitely no loctite. It started turning about 20degrees, then seized up. I took about an hour to undo it. Only the front few threads are damaged, because only the front few threads protrude into the stem.
[/quote]

Where did you get the 22Nm spec? I have 12Nm? ("Screw, top steering head").
[/quote]

Dom, I have been thinking about this, and went to Google. I find 12Nm for this "screw". My own feeling is also that as a pre-load torque for tapered roller bearings, 22Nm is just too steep.

Completely different application, but car tapered roller wheel bearings get torqued to only about 3-4Nm.

Will speak to Eddie today. [Eddy2race]
 

Offline BuRP

Re: Husky 701 broken top triple clamp.
« Reply #28 on: June 08, 2021, 09:58:26 am »
Ja, dis nie net Yamaha wat ons sien aankom nie.

Myyyyyyy donner, jy slaap daai tiepe reaksies ne?
 :lol8:
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Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #29 on: June 08, 2021, 10:05:59 am »


The bolt is really only there to load the bearing - it only needs 12 Nm and no Locktite. Must have been a bodge job from the factory.

22Nm. And definitely no loctite. It started turning about 20degrees, then seized up. I took about an hour to undo it. Only the front few threads are damaged, because only the front few threads protrude into the stem.
[/quote]

Where did you get the 22Nm spec? I have 12Nm? ("Screw, top steering head").
[/quote]

It's factory-engraved on the yoke, 17Nm for the fork pinchbolts.
[/quote]

I am not talking about the pinch bolts - rather the top steering head bolt that was stripped ... that is why I said "The bolt is really only there to load the bearing". Listen properly  :lol8:
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Offline Jughead

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Re: Husky 701 broken top triple clamp.
« Reply #30 on: June 08, 2021, 10:21:52 am »
I see this type of stripped bolt often.

It is normally the result of a small burr on the factory turned steel thread that it screws into.  This small burr picks up the aluminium from the bolt since it is the softer material.  Once it has picked it up it compresses it as the screw is turned, resulting in the thread locking up.  That is why it only turned out about 20 and then locked up.  After the 20 you now have a ball of aluminium locking the thread up, and all just goes south from there.

I do not believe that it is anything anyone has done subsequent to the original factory installation.  Rather just a badly finished thread from the factory.
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Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #31 on: June 08, 2021, 10:26:04 am »

Dom, I have been thinking about this, and went to Google. I find 12Nm for this "screw". My own feeling is also that as a pre-load torque for tapered roller bearings, 22Nm is just too steep.

Completely different application, but car tapered roller wheel bearings get torqued to only about 3-4Nm.

Will speak to Eddie today. [Eddy2race]
[/quote]

As I say above it is not 22Nm on the tapered bearing (that yes would be too much) but 12Nm (as it sounds your Google confirmed). I have serviced the bearing on both our 701's and know that this is right and works perfectly. The pinch bolt on the top triple steering stem is 20Nm, and the top fork pinch bolts are top 17Nm and the lower ones 12Nm. Here endeth the lesson.  8)
« Last Edit: June 08, 2021, 10:58:34 am by BiG DoM »
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Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #32 on: June 08, 2021, 11:23:01 am »
While I tend to agree with you, Prof Dom, this remains confusing. :biggrin:

 

Offline OomD

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Re: Husky 701 broken top triple clamp.
« Reply #33 on: June 08, 2021, 12:21:34 pm »
I'm no mechanic, but wouldn't it say "Nm" if it were a torque value, like the 17Nm one?
 

Offline katana

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Re: Husky 701 broken top triple clamp.
« Reply #34 on: June 08, 2021, 02:12:41 pm »
Judging by the dimple at 24, it would seem like the steering angle. 
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Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #35 on: June 08, 2021, 02:15:25 pm »
I'm no mechanic, but wouldn't it say "Nm" if it were a torque value, like the 17Nm one?

One would think so, yes.
 

Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #36 on: June 08, 2021, 02:17:39 pm »
Yes it is the offset. I had a Speedbrain XTrig adjustable triple set for my G450X and it had similar markings.
« Last Edit: June 08, 2021, 02:34:27 pm by BiG DoM »
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Offline OomD

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Re: Husky 701 broken top triple clamp.
« Reply #37 on: June 08, 2021, 02:39:18 pm »
Yes it is the offset. I had a Speedbrain XTrig adjustable triple set for my G450X and it had similar markings.
Interesting... what offset would that be? And how does one adjust between the two?
 

Offline 2StrokeDan

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Re: Husky 701 broken top triple clamp.
« Reply #38 on: June 08, 2021, 04:39:20 pm »
Thank Dom, that clears this up.
 
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Offline BiG DoM

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Re: Husky 701 broken top triple clamp.
« Reply #39 on: June 08, 2021, 05:44:08 pm »
Thank Dom, that clears this up.

Where I am confused is why there are two offset markings as I am unaware that there is offset adjustment on this triple?  ???  I wonder if it changed with the 2020/21 change in suspension and fork travel? Maybe Eddie can clarify?
« Last Edit: June 08, 2021, 05:45:02 pm by BiG DoM »
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