Welcome to the Access Norton Forum. Login as a VIP member to remove the advertising banners.


CLUTCH BASKET TOUCHING PRIMARY

Classic Norton Commando Motorcycles.

CLUTCH BASKET TOUCHING PRIMARY

Postby willy mac » Thu Mar 16, 2017 3:07 am

Not a new topic I know,

I have a belt drive primary and the clutch basket has started making contact with the primary case when I kick it over, the wobble in the basket is nothing new from reading in the forum, but just wondering if anyone has had this themselves and what you did to remedy it.
I don't think it's making contact when running as there is no noise I can hear and nothing to feel, there are no witness marks on the case but the edge of the basket is showing signs of contact.
Clutch works fine and gear change is sweet, at the last put together the clutch centre nut was torqued to 35-40 lbs ft .

Any thoughts would be appreciated.

Mac.
JPN REPLICA
YAMAHA XJR1300

willy mac
Posts: 203
- Images: 0
Joined: Mon Nov 23, 2009 9:19 am
Location: St Andrews Scotland

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby marinatlas » Thu Mar 16, 2017 5:39 am

Hi, if it was working fine just before, may be the mainshaft circlip locating the clutch spacer had failed and thus had migrated a bit in wards, otherwise maybe missing some spacer the 0.048" or 0.036 " one (s), ouwarfds the spacer, we hope your mainshaft is straight...........more to come, hope this help!
User avatar

marinatlas
Posts: 586
Joined: Sun Nov 04, 2007 1:45 am
Location: France-St malo

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby concours » Thu Mar 16, 2017 5:42 am

Pics please. Too many details left out to be guessing.
User avatar
Access Norton VIP Paying Member
concours
VIP MEMBER
Posts: 3038
View Photo Album - Images: 0
Joined: Thu Dec 29, 2011 5:52 pm
Location: Kensington, NH USA

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby marinatlas » Thu Mar 16, 2017 5:49 am

If , it just rub when kicking ........did you take out the primary outer case to ahve a look when kicking ? if the fact of pushing on the kick could make the mainshaft going inwards , there could be some trouble with any bushes in the tranny..............more to come!!
User avatar

marinatlas
Posts: 586
Joined: Sun Nov 04, 2007 1:45 am
Location: France-St malo

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby rockitdoc » Thu Mar 16, 2017 7:21 am

Thicker spacer would be simplest fix.
1960 DBD34 (rocker)
1972 Norton Combat Commando (Badboy)
1974 Commando (custom)
1976 R90S (bank vault)
2012 ST1300 (appliance)
User avatar
Access Norton VIP Paying Member
rockitdoc
VIP MEMBER
Posts: 115
Joined: Wed Nov 05, 2014 8:25 am
Location: Fort Collins, CO

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby willy mac » Thu Mar 16, 2017 10:10 am

Sorry guys it the outer casing it's touching not the inner.
JPN REPLICA
YAMAHA XJR1300

willy mac
Posts: 203
- Images: 0
Joined: Mon Nov 23, 2009 9:19 am
Location: St Andrews Scotland

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby cash » Thu Mar 16, 2017 12:33 pm

Has the clutch been assembled incorrectly, the clutch center nut come loose or the inner case centre stud missing its spacers??

Dave

cash
Posts: 1136
Joined: Fri Nov 10, 2006 12:13 pm
Location: west cumbria

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby batrider » Thu Mar 16, 2017 1:07 pm

You are saying it "started" doing this? Check the mainshaft nut on the right side. If loose it allows the mainshaft with clutch basket to move outwards. Happened to me when mine was brand new and I used a roadside rock to tighten it in the middle of nowhere. There is a tool for this to avoid hurting the nut.

Russ
'72 Combat Roadster 2020xx
'61 Matchless G3 350, ex-Dutch Army
'09 H-D XR1200
User avatar

batrider
Posts: 1678
Joined: Sat Aug 09, 2008 5:09 am
Location: UBE, PA USA

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby willy mac » Fri Mar 17, 2017 10:51 am

I've taken the clutch apart today and removed the basket. The nut was still tight, circlip still in one piece, the recessed washer and spacer were correctly fitted, hardly any movement in the mainshaft in any direction, same again with the clutch centre on the splines, but there seems to be a fair bit of slop in the basket bearing.
The only number I can see on the bearing is FSS166 6007, any of you who are good with bearing types and quality might be able to say whether this is a decent or cheap and nasty bearing, my thoughts are with the latter. I think a new one might be the first move from here.
JPN REPLICA
YAMAHA XJR1300

willy mac
Posts: 203
- Images: 0
Joined: Mon Nov 23, 2009 9:19 am
Location: St Andrews Scotland

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby cash » Fri Mar 17, 2017 12:14 pm

Hi willy mac,
I would have thought the clutch plates and diaphragm would push a loose basket back away from the outer case. Is the basket catching all the time or only when you pull the clutch lever? Is there any in out movement of the primary casing, can you pull it out away from the clutch? And finally, what was the last thing you did?

Dave

cash
Posts: 1136
Joined: Fri Nov 10, 2006 12:13 pm
Location: west cumbria

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby willy mac » Sat Mar 18, 2017 4:56 am

Hi Dave

The only time the basket is catching as far as I can fathom is when it gets kicked over and it's catching the outer casing but not leaving witness marks. Clutch operation is fine as is gearchange. The last thing I did was put the primary back on the gearbox had not been touched. More investigation required me thinks.
JPN REPLICA
YAMAHA XJR1300

willy mac
Posts: 203
- Images: 0
Joined: Mon Nov 23, 2009 9:19 am
Location: St Andrews Scotland

Re: CLUTCH BASKET TOUCHING PRIMARY

Postby auldblue » Fri Mar 24, 2017 7:47 pm

Hi Willie Mac, did you get to the bottom of why your box was jumping into gear when switching off because you say the box is working fine now which is a result .?

Jg
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
Access Norton VIP Paying Member
auldblue
VIP MEMBER
Posts: 920
View Photo Album - Images: 1
Joined: Tue Nov 20, 2012 8:31 pm


Return to Norton Commando Classic Motorcycles

Who is online

Users browsing this forum: Deets55, peculierboy and 39 guests