Ducati Monster Forum

Moto Board => Tech => Topic started by: michael holmes on March 29, 2018, 12:29:23 PM

Title: First and second gear.
Post by: michael holmes on March 29, 2018, 12:29:23 PM
Hello,
Is it typical for the Ducati monster gearboxes when you engage 1st gear it comes
with a clunk, a kind of distinctive but very strong clacking.
Also shifting to second is a bit rough, after that its a brease.

Could it be the plates are wearing or is it just a Ducati thing.
When i put the engine in fifht gear and release the clutch on idle it stalls immediatly so
the speaks against wearing.

My motorcycle is a 620 monster capirex from the year 2004.

Many thanks,
MH
Title: Re: First and second gear.
Post by: stopintime on March 29, 2018, 01:19:05 PM
More a Ducati thing than many other bikes. At higher revs and more abusive riding (racing heritage) it's better that it requires firm shifting. Not so great when cruising through town.

It would be clunkier than normal IF the clutch isn't adjusted correctly or if you have air trapped in the fluid.
Title: Re: First and second gear.
Post by: michael holmes on March 29, 2018, 08:45:40 PM
Thanks,
I noticed that when i push the bike forward and let it roll a little
the shifting in 1st gear is much more smooth.
Could that explain something about wear?

With normal use the plates must hold 18000km before they
have to be changed i guess?

MH
Title: Re: First and second gear.
Post by: Howie on March 30, 2018, 04:45:45 AM
You are experiencing clutch drag.  Some is normal on your wet clutch bike, particularly when cold.  Check the slave cylinder for leaks and try bleeding.
Title: Re: First and second gear.
Post by: Speeddog on March 30, 2018, 08:27:12 AM
Is it 5-speed or 6-speed?
Title: Re: First and second gear.
Post by: michael holmes on March 30, 2018, 09:26:08 AM
It' s a 6-speed gear box.
Title: Re: First and second gear.
Post by: Speeddog on March 30, 2018, 10:25:08 AM
So you've got the Adler 'slipper' clutch.
If you're hard on the clutch, it can be prone to slipping.

As Howie and Stopintime said, flush and bleed is a good low-cost countermeasure to the clunkyness.

If you have an adjustable lever fitted, set it 'out' a notch and see if that helps.
Title: Re: First and second gear.
Post by: michael holmes on March 30, 2018, 11:27:28 AM
Ok thanks for your replies, ill try bleeding it and see
of it helps a bit.

The lever itself is not adjustable but there' s a little
screw inside the lever, that can be turned in or out.
There's a drop of glu on it.

MH
Title: Re: First and second gear.
Post by: Howie on March 30, 2018, 01:52:41 PM
Quote from: michael holmes on March 30, 2018, 11:27:28 AM
Ok thanks for your replies, ill try bleeding it and see
of it helps a bit.

The lever itself is not adjustable but there' s a little
screw inside the lever, that can be turned in or out.
There's a drop of glu on it.

MH


The drop of glue is there to discourage you.  That adjustment is for free play.  Too little free play and your clutch will slip.
Title: Re: First and second gear.
Post by: michael holmes on March 31, 2018, 12:22:06 PM
I bled the clutch today, no air bubbles in the system.(dot4)
I use 10w40 castrol motor oil jasoma2, so thats ok to me.
When i put the motor on a paddock stand and put it in 1st gear with the clutch engaged the rear wheel
starts to turn.
After it has stopped when braking its starts to turn again.
With a warmed up engine 80+ degrees celcius it doesn't turn that easy any more, and after braking
it doesnt start to turn.  

Are these normal actions or is there a problem with the clutch system?
Title: Re: First and second gear.
Post by: BK_856er on March 31, 2018, 01:24:18 PM
I've tried several "for wet clutch" motorcycle oils, and the only one that makes my APTC clutch work its best is Mobil 1 Racing 4T 10W-40.  YMMV.

BK
Title: Re: First and second gear.
Post by: DarkMonster620 on March 31, 2018, 01:33:21 PM
Quote from: michael holmes on March 31, 2018, 12:22:06 PM
I bled the clutch today, no air bubbles in the system.(dot4)
I use 10w40 castrol motor oil jasoma2, so thats ok to me.
When i put the motor on a paddock stand and put it in 1st gear with the clutch engaged the rear wheel
starts to turn.
After it has stopped when braking its starts to turn again.
With a warmed up engine 80+ degrees celcius it doesn't turn that easy any more, and after braking
it doesnt start to turn. 

Are these normal actions or is there a problem with the clutch system?

sounds like it might be slipping . . .
Title: Re: First and second gear.
Post by: stopintime on March 31, 2018, 01:59:54 PM
Quote from: michael holmes on March 31, 2018, 12:22:06 PM
........
When i put the motor on a paddock stand and put it in 1st gear with the clutch engaged the rear wheel
starts to turn.
........

Disengaged? Lever in or out?
Title: Re: First and second gear.
Post by: michael holmes on March 31, 2018, 03:23:44 PM
Lever in.
Title: Re: First and second gear.
Post by: ducpainter on March 31, 2018, 03:25:06 PM
Quote from: DarkMonster620 on March 31, 2018, 01:33:21 PM
sounds like it might be slipping . . .
Sounds more like drag to me.
Title: Re: First and second gear.
Post by: stopintime on March 31, 2018, 04:08:38 PM
Quote from: ducpainter on March 31, 2018, 03:25:06 PM
Sounds more like drag to me.

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