BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
The Bonneville Shop JRC Engineering dealers
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Member Spotlight
Queen's Horseman
Queen's Horseman
Halifax, Nova Scotia, Canada
Posts: 64
Joined: June 2008
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
44 registered members (Alan_nc), 288 guests, and 377 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Davenz13, Sean65, Rerock, pkuzyk, Hunter S
10476 Registered Users
Top Posters(30 Days)
NickL 89
franko 73
Triless 67
Popular Topics(Views)
747,056 mail-order LSR
Forum Statistics
Forums34
Topics68,816
Posts670,289
Members10,476
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate Thread
Clutch slip #731384
04/08/18 8:56 pm
04/08/18 8:56 pm
Joined: May 2009
Posts: 299
Omaha, NE, USA
P
Paul Sammut Offline OP
BritBike Forum member
Paul Sammut  Offline OP
BritBike Forum member
P

Joined: May 2009
Posts: 299
Omaha, NE, USA
As I was taking my '51 Rapide for a test ride after installing twin-leading shoe brakes (and in a rare window of fine weather between snowfalls), I noticed significant clutch slip (standard clutch). The brakes work well (thank you, Vincent Speet!) but the slipping rapidly became worse, so I quickly returned home. I removed the clutch cover, expecting to see that oil had managed to seep past the shaft into the chamber. Well that hadn't happened, but I noticed the clutch shoes had lost chunks of material and noted that the circlip (865) formerly retaining one of the shoes wasn't there. As I scraped out the housing of material, the twisted, mangled circlip was found in the debris. I believe I had used new circlips and had carefully ensured they were seated when I worked on the clutch at the beginning of the last season. Now, of course, I am second guessing myself and imagine I didn't do a good enough job. However, i am going to worry about it in the future as I install new assemblies and circlips.
Has anyone else had this happen? Are there different qualities of circlips available? John Healy, I will contact you tomorrow to order new parts!
Thanks in advance,
Paul.


Paul

'74 Commando - Interstate
"74 Commando - Hi-Rider, possibly
'65 Atlas, mostly anyway
'15 R1200 GS Adv
'51 Vincent Rapide
'58 Ariel Square Four
Support your #1 Vincent Forum

Check out British motorcycles for sale:
Vincent Motorcycles on e-Bay UK, Vincent motorcycles on e-Bay North America
Re: Clutch slip [Re: Paul Sammut] #731700
04/12/18 12:05 pm
04/12/18 12:05 pm
Joined: Nov 2007
Posts: 126
Birmingham, UK
T
Twin Pot Phil Offline
BritBike Forum member
Twin Pot Phil  Offline
BritBike Forum member
T

Joined: Nov 2007
Posts: 126
Birmingham, UK
Hello Paul,
I am assuming that the clutch shoes have not been 'faced up' at all - by removing some of the shoe metal to regain a flat surface, as that allows the shoes too much room to walk up and down the spindle (thrust washes to take up the difference are your friend when here). If there are washers involved make sure they are not biasing the way the shoes sit on the spindles relative to each other, as that make the drum want to also bias on its axis (but only by a minute amount).
Are the shoe spindles new(ish) or original, some repop units (many years ago) did not have the groove for the circlip cut correctly as a square form - there was a noticeable radius at each of the points where the side of the groove met the floor of the groove, causing the circlip to 'ride up' out of the groove when in use.
The circlips should be 'springy' such that as you open one up and then let the tension off it should return to where it came from (some have been known to be soft as a result of poor heat treatment).
I always worked on the basis of the more of a s*d the circlip was to get on the spindle, the more likely it was to stop there!

Does that help any?
Cheers
Phil

Re: Clutch slip [Re: Paul Sammut] #732029
04/16/18 3:31 am
04/16/18 3:31 am
Joined: May 2009
Posts: 299
Omaha, NE, USA
P
Paul Sammut Offline OP
BritBike Forum member
Paul Sammut  Offline OP
BritBike Forum member
P

Joined: May 2009
Posts: 299
Omaha, NE, USA
Thanks, Phil. I don't know the answers to your questions, I'm afraid, as I bought the bike only about 18 months ago. I will certainly inspect the spindles and grooves carefully. The shoes appear standard to my unpracticed eye. I'm hoping the new circlips, which are on their way from VOC will be of good quality. I will also check to be sure there is no "sidedness" (is that a word?) to them.
Regards,
Paul.


Paul

'74 Commando - Interstate
"74 Commando - Hi-Rider, possibly
'65 Atlas, mostly anyway
'15 R1200 GS Adv
'51 Vincent Rapide
'58 Ariel Square Four

Moderated by  John Healy 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.6.2