View unanswered posts | View active topics It is currently May 13th, 2025, 5:36 pm



Reply to topic  [ 7 posts ] 
 Centrifugal clutch 
Author Message
viking bastard
User avatar

Joined: April 18th, 2009, 11:43 am
Posts: 2424
Location: Meneac, Bretagne France
Post Centrifugal clutch
One for the engineers

Every time we receive fresh stock, the clutch coronas diameter changes.

Before they had too much meat on the linings, preventing the clutches from working properly. I had them machined a fraction and they worked well.

Attachment:
P3290720.JPG


The next lot of coronas are too small in diameter. It looks like that not enough lining has been fitted.
I can't find any informations what the gab should be (using feeler gauges) between the drum and the lining, measured on 3 points. The drum diameter is OK

Attachment:
P3290723.JPG


You do not have the required permissions to view the files attached to this post.

_________________
Image


January 30th, 2013, 4:01 pm
Profile WWW
Agony Aunt - You have a car problem? Speak to Ken

Joined: March 6th, 2009, 1:40 am
Posts: 3675
Post Re: Centrifugal clutch
Hej Viking,
measurement between outer edges/faces of linings is 219.1mm
Inner diameter of clutch drum 219.9mm, so clearance between shoes and drum is 0.4mm

Double checked by using a 0.8mm feeler gauge at one spot, with shoe assembly sitting inside drum.
Brand new items in Citroen boxes, not relined/refurbished or pattern parts. ;)

I'd guess that you've adjusted the position of the drum on the input shaft...

ken

_________________
Image


Last edited by ken on January 30th, 2013, 5:56 pm, edited 1 time in total.



January 30th, 2013, 5:12 pm
Profile
viking bastard
User avatar

Joined: April 18th, 2009, 11:43 am
Posts: 2424
Location: Meneac, Bretagne France
Post Re: Centrifugal clutch
Thanks mate.

_________________
Image


January 30th, 2013, 5:36 pm
Profile WWW
Firing on two.

Joined: March 26th, 2010, 8:41 pm
Posts: 234
Post Re: Centrifugal clutch
Interested in 2cViking - when you machine the clutch, how do you stop it 'centrifuging' out of shape ?


January 31st, 2013, 6:47 pm
Profile
viking bastard
User avatar

Joined: April 18th, 2009, 11:43 am
Posts: 2424
Location: Meneac, Bretagne France
Post Re: Centrifugal clutch
bobh wrote:
Interested in 2cViking - when you machine the clutch, how do you stop it 'centrifuging' out of shape ?



Low rev lathe.

Attachment:
P3290714.JPG


Attachment:
P3290719.JPG


You do not have the required permissions to view the files attached to this post.

_________________
Image


January 31st, 2013, 7:19 pm
Profile WWW
Firing on two.

Joined: March 26th, 2010, 8:41 pm
Posts: 234
Post Re: Centrifugal clutch
Just another thought, If you turn them at low revs, then in use, when they expand under centrifugal force you will loose circularity. Shouldn't you pack them out to final diameter plus a bit, then turn them to final diameter. Or am I being a bit to Nerdy ? Don't answer that one, I think I know the answer.


February 1st, 2013, 9:17 pm
Profile
Firing on 1-2 Spark
User avatar

Joined: November 8th, 2009, 5:42 pm
Posts: 2847
Location: NL
Post Re: Centrifugal clutch
bobh wrote:
I think I know the answer.
:lol: :lol: :lol:

_________________
Russell wrote:
Hi Geo,
you've been one of the sites biggest attractions in recent years.
Russ


February 1st, 2013, 9:48 pm
Profile WWW
Display posts from previous:  Sort by  
Reply to topic   [ 7 posts ] 

Who is online

Users browsing this forum: No registered users and 95 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.