clutch surge - MVAgusta.net
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 10-17-2013, 06:53 PM Thread Starter
Senior Member
 
rickyleesurf's Avatar
 
Join Date: Jan 2008
Posts: 395
clutch surge

After installing a new clutch master cylinder, Im experiencing a problem.
It only happens when I am at a stop and getting ready to go. As I ease off the clutch, I feel it grab and start rolling. But after the clutch is fully released, the bike wants to surge. Has caught me off guard a few times. Especially making a turn at a stop light. Thought I was going to get launched into the sidewalk. I do have an STM clutch slave, which I believe is 30mm. My mc is 16x18.
Thanks in advance for any info and solutions
rickyleesurf is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 10-17-2013, 08:30 PM
Senior Member
 
theknurl's Avatar
 
Join Date: Jul 2009
Location: Palos Verdes Est, SoCal, USA
Posts: 13,908
Send a message via Skype™ to theknurl
Wink //

make sure its well bled!

Noel-theknurl

The Forum Curmudgeon
I'm not PC either
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'08 910R
'05 F4
ph. 310-414-7247 PST, GMT -8
PayPal;
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Skype; theknurl
theknurl is online now  
post #3 of 7 (permalink) Old 11-12-2013, 10:02 PM Thread Starter
Senior Member
 
rickyleesurf's Avatar
 
Join Date: Jan 2008
Posts: 395
Bled it many times, still have the same problem. Could there be a problem with the actual clutch? Maybe a bad spring?
rickyleesurf is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 11-13-2013, 02:08 AM
Moderator
 
Donsy's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 22,055
New Site Garage
They way you describe the symptoms sounds a bit weird, if you say the bike surges, is it with the clutch semi engaged ?
FWIW, I doubt it's a bad spring, this would just let the clutch slip under heavy acceleration.
On one of the F4's I worked on in the past, the clutch push rod had built up contamination because of the leaky slave cylinder, this caused the push rod to get stuck every now and again.
It would get stuck inside the front sprocket cover casing.
So the clutch would slip and then as the pin came out, all of a sudden the bike would take of at an alarming rate, as if someone had just dropped the clutch.
Might be worth looking into this.

Dons Nel
Own - Two F4 1000R's 06 and 07.
PayPal :
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

eMial:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mobile in Australia: 0438 385 776
Website with MV Manuals for Most models -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Donsy is offline  
post #5 of 7 (permalink) Old 11-13-2013, 06:32 PM
Senior Member
 
theknurl's Avatar
 
Join Date: Jul 2009
Location: Palos Verdes Est, SoCal, USA
Posts: 13,908
Send a message via Skype™ to theknurl
Wink ?

Donsy;
I didn't see it the 1st time either, its with the clutch fully released
there's easy 2-250lbs or more of spring pressure, so the plates are seated
push rod can't hold it open......or it would slip horribly

its fueling, my Brutale does it, just off idle lightly accelerating its dead and then it takes off trying to loft the front.....
and at 80-85mph and rolling off the throttle decelerating hard it has a couple of lean cells in the map.... it backfires loud enough to wake the dead

same throttle position.....

Noel-theknurl

The Forum Curmudgeon
I'm not PC either
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'08 910R
'05 F4
ph. 310-414-7247 PST, GMT -8
PayPal;
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Skype; theknurl
theknurl is online now  
post #6 of 7 (permalink) Old 11-13-2013, 07:34 PM Thread Starter
Senior Member
 
rickyleesurf's Avatar
 
Join Date: Jan 2008
Posts: 395
Great........ Looks like I'll be doing wheelies every time I take
off from a stop light Maybe I should put the stock clutch
slave back on and see if it does the same thing.
rickyleesurf is offline  
post #7 of 7 (permalink) Old 11-13-2013, 10:37 PM
Moderator
 
Donsy's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 22,055
New Site Garage
Smile

Quote:
Originally Posted by rickyleesurf View Post
Great........ Looks like I'll be doing wheelies every time I take
off from a stop light Maybe I should put the stock clutch
slave back on and see if it does the same thing.
If it wasn't leaking, that would be one option for sure.

Dons Nel
Own - Two F4 1000R's 06 and 07.
PayPal :
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

eMial:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mobile in Australia: 0438 385 776
Website with MV Manuals for Most models -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Donsy is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to use all of the features of the MVAgusta.net site, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome