750 SR shift issue - MVAgusta.net
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 38 (permalink) Old 10-20-2016, 10:31 AM Thread Starter
New Member
 
Join Date: Oct 2016
Posts: 6
750 SR shift issue

Hi All. New to the forum, so I'll dive right in. I have a 2004 750 SR and I'm the second owner. The bike has a weird problem. To get back to neutral you have to slightly increase the revs or it won't go in. It also 'creeps' forward when stationary and in gear. The first owner (who is a friend) told me he spent a long time talking to MV about it and was told its a problem with all the SPR engined MVs.
Since I've bought the bike my local dealer swapped out my clutch for a standard 750 one and the problem went completely away. Put my SPR clutch back in, and the problem returns. MV don't seem to know why and also can't tell me why the SPR clutch does this. Anyone know anything about this problem? TIA.
MV SR Noel is offline  
Sponsored Links
Advertisement
 
post #2 of 38 (permalink) Old 10-20-2016, 10:59 AM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,823
Send a message via Skype™ to silentservice703
Welcome...you are the second SR to join the family this month!

Where are you on this Big Blue Marble?

I suspect, if the problem isn't there with the standard clutch, but is there with the SR clutch, then there is an issue with the length of the clutch push rod.

That is assuming the system is well bled and no modifications have been done to the clutch lever or master cylinder.

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

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


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #3 of 38 (permalink) Old 10-20-2016, 11:03 AM
Al-
Senior Member
 
Al-'s Avatar
 
Join Date: May 2011
Posts: 1,007
I had this issue with my spr also. I ended up replacing the clutch discs and steels and it went away. I think they had gotten a bit sticky from sitting over the years.
Al- is offline  
Sponsored Links
Advertisement
 
post #4 of 38 (permalink) Old 10-20-2016, 12:19 PM Thread Starter
New Member
 
Join Date: Oct 2016
Posts: 6
Quote:
Originally Posted by silentservice703 View Post
Welcome...you are the second SR to join the family this month!

Where are you on this Big Blue Marble?

I suspect, if the problem isn't there with the standard clutch, but is there with the SR clutch, then there is an issue with the length of the clutch push rod.

That is assuming the system is well bled and no modifications have been done to the clutch lever or master cylinder.
I'm in Dubai, UAE (but British, so not a native). My mate imported the SR from the factory in 04 as there was no dealer here. An official dealer opened about 6 months ago and have been really helpful.

I'll pass on the info to the dealer mechanic, as he taken this on as a sort of pet project, as he's annoyed he can't find the solution.
MV SR Noel is offline  
post #5 of 38 (permalink) Old 10-20-2016, 12:21 PM Thread Starter
New Member
 
Join Date: Oct 2016
Posts: 6
Quote:
Originally Posted by Al- View Post
I had this issue with my spr also. I ended up replacing the clutch discs and steels and it went away. I think they had gotten a bit sticky from sitting over the years.
Thanks for the info. Apparently its a common problem, but no-one at MV seems to know how to fix it. I already tried new discs and steels, but no luck. Now a new basket is arriving next week to see if that solves it. Might end up just fitting a standard 750 clutch to solve it, as I have a track bike, so the MV doesn't get used in anger too much.
MV SR Noel is offline  
post #6 of 38 (permalink) Old 10-20-2016, 12:48 PM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,823
Send a message via Skype™ to silentservice703
What is the difference between the SR clutch and the standard clutch?

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

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


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #7 of 38 (permalink) Old 10-20-2016, 03:12 PM Thread Starter
New Member
 
Join Date: Oct 2016
Posts: 6
Quote:
Originally Posted by silentservice703 View Post
What is the difference between the SR clutch and the standard clutch?
The plates are all the same, but the basket is slightly different (and the springs I believe). It's all very small differences, but enough to make a difference. We've asked MV (at factory level) if the standard clutch can cope with the SR power (plus mine is factory chipped). But unsurprisingly no-one there seems to want to answer that.
MV SR Noel is offline  
post #8 of 38 (permalink) Old 10-20-2016, 04:01 PM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,823
Send a message via Skype™ to silentservice703
You did not change the basket initially, and the clutch worked with the regular 750 plates.

Therefore, you can conclude that the basket has nothing to do with it.

It is in the height of the plate stack.

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

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


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #9 of 38 (permalink) Old 10-20-2016, 07:34 PM
Senior Member
 
theknurl's Avatar
 
Join Date: Jul 2009
Location: Palos Verdes Est, SoCal, USA
Posts: 13,806
Send a message via Skype™ to theknurl
Thumbs up ?

First Welcome to the Forum Noel! .......from another Noel

750 clutches have 6 springs on the pressure plate and all the fiber discs are the same

910-1000S clutches have 4 springs on the pressure plate and the top and bottom fiber

discs are narrower than the rest.....

there is also a flat washer and a belleview spring on the hub under the 1st steel plate

(page G-09 of the 910 Brutale Parts Manual) items #17 & #18, flat washer goes on 1st

all the plates and discs must be flat.....

then bleed the clutch

http://www.mvagusta.net/forum/showthread.php?t=196585

if the fiber discs are in spec it will work.....

my vote, air in the system

Chuck; the hydraulics compensate for clutch wear automatically, push rod length too


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 #10 of 38 (permalink) Old 10-20-2016, 07:50 PM
Senior Member
 
Ian SAVS's Avatar
 
Join Date: Feb 2012
Location: NC. USA
Posts: 4,543
New Site Garage
Send a message via Skype™ to Ian SAVS
Quote:
Originally Posted by silentservice703 View Post
What is the difference between the SR clutch and the standard clutch?
The Senna 750, the SPR and the SR all got an upgraded "stronger" clutch. Don't know yet what parts were different.

What we've got here, is failure to communicate.
Ian SAVS 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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