Nasty Surprise

[daviee]

Thought that was the point to make sure it don't come off , if it was too tight it would have stripped the threads on the nut as that is the softer of the two components but it didn't so not a problem

[Bretty]

You're clearly a man of extremes... and this years guinness world records holder for the world's longest sentence. I almost passed out reading that. :P 

[daviee]

been working on bike longer than i care to mention from dyno rolling road to two stroke tuning i have a fair idea what im doing

[fazersharp]

The Yam official service manual states 90nm on the 12mm nut.

[Bretty]

Mate, you've just recommended that people torque their sprocket nut up to 450Nm. Are you sure that's good advice?


I wonder how many of these sprocket failures are the result of people guessing the torque on the nut?

[fazersharp]

[fazersharp]

Here this lot will keep you going for a while ----enjoy

http://foc-u.co.uk/index.php/topic,19504.msg225613.html#msg225613

http://foc-u.co.uk/index.php/topic,19958.msg230546.html#msg230546

http://foc-u.co.uk/index.php/topic,17632.msg203662.html#msg203662

http://foc-u.co.uk/index.php/topic,16751.msg193040.html#msg193040

[Graham53]

That's interesting. I took my bike to a (3 letter) south London tyre place for new chain and sprockets. I took the side cover off 4months later to find what appeared to elbe my original sprocket?! I guess they now have a policy of not touching the front sprocket on a fazer now?!

Yup that's the place 3 letters
Don't know if it's good they didn't try to kill you or bad they haven't learned what to do

[daviee]

Mate, you've just recommended that people torque their sprocket nut up to 450Nm. Are you sure that's good advice?


I wonder how many of these sprocket failures are the result of people guessing the torque on the nut?

right smart arse where did i recommend it ,, i stated what i had done simple as that but their is always one dick head that likes to blow stuff out of proportion , best thing you can do mate it get a life and stop trolling peoples post fukin muppet

[Bretty]

Sorry mate, not trolling you or a smart arse. But a lot of people read this forum before doing jobs for the first time. The best advice is to use what ever you have to to get the nut off and a torque wrench to put it back on.


...or if the threads are fooked, weld it back on. Haha.

[fazersharp]

Mate, you've just recommended that people torque their sprocket nut up to 450Nm. Are you sure that's good advice?


I wonder how many of these sprocket failures are the result of people guessing the torque on the nut?

right smart arse where did i recommend it ,, i stated what i had done simple as that but their is always one dick head that likes to blow stuff out of proportion , best thing you can do mate it get a life and stop trolling peoples post fukin muppet

WOW steady  .

Anywho, looks like I have another bike with no sprocket issues to add to my collection of unaffected 98s.
Have you read through those links yet.

That gun of yours it says up to 320 or whatever so how do you control it to stop at any given torque, and the advert says "up to 320 - enough to remove wheel nuts" --- well I can do that by hand with a crappy tool in the car kit, bit of an odd thing to say.

   

[Fazerider]

.. their is always one dick head that likes to blow stuff out of proportion..

As you're demonstrating.


Anyhow... just went out to investigate a clunking noise I get when pulling away or riding slowly and found my 12mm sprocket nut is loose!
The shaft showed no signs of damage when I changed C&S, it was thoroughly degreased, and the new nut loctited on at the recommended torque and the security washer tabbed over. Admittedly that was 50k ago (thanks, Scottoiler), but it's still a surprise to find the new ones can also suffer the problem.
Time to get the old stick welder out.

[YamFazFan]

Mate, you've just recommended that people torque their sprocket nut up to 450Nm. Are you sure that's good advice?


I wonder how many of these sprocket failures are the result of people guessing the torque on the nut?

right smart arse where did i recommend it ,, i stated what i had done simple as that but their is always one dick head that likes to blow stuff out of proportion , best thing you can do mate it get a life and stop trolling peoples post fukin muppet

When someone posts the details of a procedure that they felt worked well for them it's generally taken as an implied recommendation.

I'm pleased to see you have clarified that it was in fact not a recommendation, as suggesting tightening this nut up that ball breaking tight would clearly be ludicrous advice

[darrsi]

.. their is always one dick head that likes to blow stuff out of proportion..

As you're demonstrating.


Anyhow... just went out to investigate a clunking noise I get when pulling away or riding slowly and found my 12mm sprocket nut is loose!
The shaft showed no signs of damage when I changed C&S, it was thoroughly degreased, and the new nut loctited on at the recommended torque and the security washer tabbed over. Admittedly that was 50k ago (thanks, Scottoiler), but it's still a surprise to find the new ones can also suffer the problem.
Time to get the old stick welder out.

Is yours a '98, just out of curiosity? 

[fazersharp]

.. their is always one dick head that likes to blow stuff out of proportion..

As you're demonstrating.


Anyhow... just went out to investigate a clunking noise I get when pulling away or riding slowly and found my 12mm sprocket nut is loose!
The shaft showed no signs of damage when I changed C&S, it was thoroughly degreased, and the new nut loctited on at the recommended torque and the security washer tabbed over. Admittedly that was 50k ago (thanks, Scottoiler), but it's still a surprise to find the new ones can also suffer the problem.
Time to get the old stick welder out.

Is yours a '98, just out of curiosity? 

Read it again and you will see that the lose nut was a replacement and therefore not a factory fitted 98

[Fazerider]

Is yours a '98, just out of curiosity? 

The bike is, but the engine was a second hand one and the serial number ends with an X which probably makes it a '99.
Securing the nut (apologies for my hideous welding) hasn't cured the clunking.
I've a suspicion the massive gap between teeth on the sprocket may have something to do with it...

[fazersharp]

Is yours a '98, just out of curiosity? 

The bike is, but the engine was a second hand one and the serial number ends with an X which probably makes it a '99.

Das sprocket ist kaput
 fully worn out sprocket 

[darrsi]

Is yours a '98, just out of curiosity? 

The bike is, but the engine was a second hand one and the serial number ends with an X which probably makes it a '99.

Das sprocket ist kaput
 fully worn out sprocket

Damn, i"ve been rumbled.