Ducati Monster Forum

Moto Board => Tech => Topic started by: zzilla on June 12, 2011, 05:14:18 PM

Title: Sprocket carrier retaining nut....
Post by: zzilla on June 12, 2011, 05:14:18 PM
....Anyone heard of the retaining wire/pin breaking due to metal fatigue?

Today while I was riding, I experienced a total loss of acceleration or engine braking. Thought it was the transmission internals.

SHIT! I thought to myself.  :o

Pulled over. Shifted through all the gears with the clutch pulled in, no odd sounds/feelings.

Hmm... I thought to myself.  ???

Looked over chain/sprocket assembly....turns out the retaining nut and retaining wire/pin (whatever you feel like calling it) are missing. This caused my sprocket carrier to walk itself out from the rear axle, and when the splines disengaged, I lost all power.

Needless to say I am thankful that I have friends nearby with a pickup truck and someone upstairs who helped me out.

I hope this isn't due to any mischief in my neighborhood. That's all I'll say about that. Parts on order. [bang]
Title: Re: Sprocket carrier retaining nut....
Post by: ducpainter on June 12, 2011, 05:23:58 PM
Were they wired?

I always safety wire the retaining clips on both nuts on my SSS because it's been known to happen..

Title: Re: Sprocket carrier retaining nut....
Post by: DarkStaR on June 12, 2011, 07:20:20 PM
Mines are zip-tied.
Title: Re: Sprocket carrier retaining nut....
Post by: rockaduc on June 13, 2011, 01:19:20 PM
I use safety wire AND zip ties
Title: Re: Sprocket carrier retaining nut....
Post by: ducpainter on June 13, 2011, 03:10:17 PM
Quote from: rockaduc on June 13, 2011, 01:19:20 PM
I use safety wire AND zip ties
Do you wear a belt...

and suspenders? ;D
Title: Re: Sprocket carrier retaining nut....
Post by: Speeddog on June 13, 2011, 04:05:33 PM
I've seen quite a few bikes come in with the nut finger tight and the wire clip in place.
Title: Re: Sprocket carrier retaining nut....
Post by: ducpainter on June 13, 2011, 04:16:45 PM
Quote from: Speeddog on June 13, 2011, 04:05:33 PM
I've seen quite a few bikes come in with the nut finger tight and the wire clip in place.
My 996 used to do that.

I found that cleaning and greasing the threads before torquing helped.
Title: Re: Sprocket carrier retaining nut....
Post by: rockaduc on June 14, 2011, 12:31:02 PM
Quote from: ducpainter on June 13, 2011, 03:10:17 PM
Do you wear a belt...

and suspenders? ;D

Sometimes...no one wants me to have a wardrobe malfunction [beer]