BSA C10 C11 C12

BSA C10 C11 C12 Forum => Technical Section => Topic started by: rolariel on February 14, 2020, 11:24:27 am

Title: C11G cam follower end float.
Post by: rolariel on February 14, 2020, 11:24:27 am
Hello, I have looked on this site and I can't find the answer to this. I have just fitted a cam follower spindle to my crank case and pressed it in with the followers, spacer and circlip fitted until I could just feel a perceptible end float, probably about 3 thou. Everything moves freely and smoothly. I noticed on another set of cases that the end float was about 1/8". As there is no positive location stop for the spindle I am not sure what the end float should be. The circlip fits inside the recess in the timing cover and the spindle does not protrude inside the crank case. Any information gratefully received. Thanks, Roland.
Title: Re: C11G cam follower end float.
Post by: chaterlea25 on February 14, 2020, 12:09:36 pm
Hi Roland,
That sounds fine
Once they are free it'll be fine
Check that when the cam is fitted that the followers are lined up with the cam lobes
Quite often they do not like up perfectly

John
Title: Re: C11G cam follower end float.
Post by: Owen on February 14, 2020, 12:26:11 pm
Is the shaft loose in the engine casing as originally it would have been a press fit.  With the followers spacer and circlip in place the end float would be set buy the timing chest cover.
Title: Re: C11G cam follower end float.
Post by: Donald on February 14, 2020, 02:05:30 pm
Hi there
The end float  will be set by how far  the shaft  is pressed into the engine case and the length  of the spacer , the spacer is held in place by circling so its position  is set.The end cover only supports
the shaft. The only thing retaining  the shaft is the  tight press fit  into  the case .How did you fit shaft
into  engine  case?t
 I had about 1/16 inch end float on mine
Title: Re: C11G cam follower end float.
Post by: timsdad on February 14, 2020, 02:22:04 pm
A bit of Loctite will sort it out, - it's what it's for.


Ray
Title: Re: C11G cam follower end float.
Post by: ROB KEMP on February 14, 2020, 07:20:05 pm
3 thou isn't much I should think you need more like 15 thou
Title: Re: C11G cam follower end float.
Post by: rolariel on February 14, 2020, 11:19:38 pm
The spindle was a tightish press fit with the crank case fairly warm and the followers and cam lobes line up very well. Provided others agree that the end float I have is okay, then I would be loathe to increase the float much as this would allow the followers to run out of true with the lobes. Thanks for all the replies, Roland.