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New V7 Transmission Rattle

Jerry421a

Just got it firing!
Joined
Aug 31, 2015
Messages
4
Location
Boise
Hello all. I am new to the forum and new to Moto Guzzi.

So far I really like my new 2014 V7.

I have one question. The transmission rattles a little more than I expected at idle in neutral with the clutch lever released. If it were a car I would say the input shaft bearing was starting to fail.

The rattle started at about 200 miles. It now has about 800. The first service is complete including changing the transmission fluid. It now has Royal Purple 75w-90. The noise was unaffected with the transmission oil change. No major metal chunks or flakes came out. Just a little fine metal sheen in the oil and a little deposit on the magnet.

Is this noise normal for a Guzzi? it does not sound terrible but a little annoying. Thanks for any responses.

Jerry
 
Please help me understand. I am looking at the exploded view in the parts catalog. It looks very similar to a dry clutch on a car. When the clutch lever is released and the clutch is engaged, I do not understand what part is loose to rattle. The pressure plate would be putting full pressure on the driven disk against the flywheel. This would mean the the pressure plate, flywheel, driven disk and the transmission input shaft that splines to the driven disk are all spinning together. What part is left loose to rattle?
 
When the clutch lever is released the clutch is engaged. The plates do not rattle as they are tight against each other.
But the clutch release mechanism, what might be called the throw out mechanism, is free to rattle. Probably contributing more to the noise than that is the transmission itself. With the clutch engaged the transmission, at least half of it, is spinning. Those parts spinning around tend to make a rattle. The dry clutch itself has little to do with it in my opinion other than the throw out mechanism. Being dry, it tends to make more noise than a similar set up in a wet clutch.
 
When the clutch lever is released the clutch is engaged. The plates do not rattle as they are tight against each other.
But the clutch release mechanism, what might be called the throw out mechanism, is free to rattle. Probably contributing more to the noise than that is the transmission itself. With the clutch engaged the transmission, at least half of it, is spinning. Those parts spinning around tend to make a rattle. The dry clutch itself has little to do with it in my opinion other than the throw out mechanism. Being dry, it tends to make more noise than a similar set up in a wet clutch.

Yup....gear rattle...completely normal. Due to the pulses of the twin making the gears dance. My Stelvio has been doing it for the last 40,000 km so not too worried. It may get louder as the bike ages. As you increase throttle in neutral the sound will go away as the pulse frequency increases and the gears spin more uniform. Once you put it in gear and ride, the noise will go away. Take a screw driver and put it on the gearbox and then to your ear. As you pull the clutch in and out, you will hear the noise from the gears.

To reassure your self (and I did the same thing to reassure me...), next time you are riding down a hill, put the bike in neutral and let the clutch out, the sound will be gone as things are now spinning properly and then return as you are slowing down to a stop.

As I have said before, the best tool with a Moto Guzzi is a good set of ear plugs. Bike rides a lot better when they are worn.
 
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