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Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: bikemadinspain on 08.04. 2017 14:39

Title: Outer Primary Chain cover
Post by: bikemadinspain on 08.04. 2017 14:39
Hi, I am rebuilding a 53 Goldenflash with a small journal engine.

Does anybody know if the outer primary chain covers come in different sizes.  The one I have was not fitted to the engine and came in a box with the other parts of the engine, however,  I am now reassembling the engine I cannot get the cover to fit over the clutch casing without pressing against it.

The clutch does not snag inside the cover and works fine.

The casing has a ser no of 67-170 p1 on it.

Many thanks
Title: Re: Outer Primary Chain cover
Post by: duTch on 08.04. 2017 15:41

 G'day maaate- haven't heard from you in a while, but I don't live here so no surprise *smile*

 As far as I know, ther's only one type of cover for the Plunger models, and the part # in the book is 67-1701, and the part# as I'm led to believe is 1# off the casting #, so at least it sounds close .. *conf*

 The trouble you have could be due to the hollow 'dowell pegs' in front and rear screw holes being out of shape and not going in the corresponding inner-case holes ?? (assuming they are there)...if not that, and the clutch is installed, then the clutch may be sitting further out that it should be..I know it's a bitch to have to pull apart and check, but but did you do progressive dry run assembly of the cover and all other bits before adding in the clutch??
Title: Re: Outer Primary Chain cover
Post by: RichardL on 08.04. 2017 20:12

 G'day maaate- haven't heard from you in a while, but I don't live here so no surprise *smile*

 

For sure, I probably live here too much, much to the affect of making people crazy but, c'mon Dutch, if you're not living here it is, at least, a well-used vacation home.

Richard L.
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 09.04. 2017 08:02
Hi gents,

yes disappeared off the radar for a few years due to, well life going round really, homes cars bikes etc etc.

Have  stripped all the clutch back off yesterday then got distracted, I will look further  this morning and let you know what I find.

Just glad the casings are the same I can now tie it down to either a blonde moment by me or a part fault.  *eek*
Title: Re: Outer Primary Chain cover
Post by: duTch on 09.04. 2017 09:53

 
Quote
but, c'mon Dutch, if you're not living here it is, at least, a well-used vacation home.

 aaah yeah, I do have the occasional relapsation *smile*

 b.m.i.s- maybe goes without saying to also dummy place the clutch without tightning mainshaft nut or adding springs- but you'll have to do the Cush nut up fully (without spring to start ) These two bits are all that I can see would impede the cover (other than the dowells)
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 09.04. 2017 13:32
Nice bikes,,

Can a short video be attached as an attachment?

Just tried but takes ages so cant figure out if its my computer or its to big
Title: Re: Outer Primary Chain cover
Post by: morris on 09.04. 2017 14:11
Nice bikes,,

Can a short video be attached as an attachment?

Just tried but takes ages so cant figure out if its my computer or its to big

No. It'll be to big as you mentioned.
If you have an outlook-hotmail account you can upload it to your "public" files and post the link on the forum. I think G-Mail offers something similar to.
If not, there's Photobucket or the likes
Title: Re: Outer Primary Chain cover
Post by: Greybeard on 09.04. 2017 15:05
YouTube?
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 09.04. 2017 16:10
Hi Morris, I remember that sign of yours!!!

Hi Greybeard, yes I am working on it at the mo, nice to see u r a supporter of the gentlemen's ride, I am hoping to do it this year in Alicante Spain
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:35
Tried and tried and cannot get it to load on U tube etc,

So have resorted to a few more pics.

Forget it, I cannot load them either, apparently I have made them to big...., not got a great deal of patience with computers....

I am off to walk the dog calm down and try something else.
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:48
some pics, fingers crossed
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:49
is the outer casing the correct shape?
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:50
at last
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:51
finally, please shout up if u see what's wrong I am not easily offended.
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 18:53
I mean of course the clutch cover case not the outer casing
Title: Re: Outer Primary Chain cover
Post by: duTch on 10.04. 2017 19:55

 Clutch cover looks a bit distorted, like maybe the spring adjuster nuts have been loose at some stage and deformed it- just guessin' ...how does it look on the inside ??

 Try leaving it off (clutch cover), and see if that makes a difference. I run mine without it and no probs
Title: Re: Outer Primary Chain cover
Post by: chaterlea25 on 10.04. 2017 20:41
Hi,
Quote
I mean of course the clutch cover case not the outer casing

That makes a little more sense *ex*
That the dome cover will not fit over the assembled clutch *????*
BSA used this type cover on a few different models M20's and some pre war models
From memory the plunger cover looks deeper??

John
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 10.04. 2017 20:59
Hi Dutch and John,

Never figured for one second that the cover could be left off.

Yes it is all scored on the inside when three of the clutch studs when I initially stripped it down had been stripped clean of the screwdriver thread top.

I have of course replaced the whole lot with new parts.

I will put it back together tomorrow afternoon and see how I get on.

With hindsight and looking back on the rebuild I wished I had sourced another engine, but I have enjoyed the rebuild and I have learned more than I had ever learned just tinkering with bikes.  *smile*
Title: Re: Outer Primary Chain cover
Post by: duTch on 11.04. 2017 00:42

 OK that's interesting, maybe as John says it may be the wrong cover.
 How many clutch plates are in there? - maybe it's too fat, the parts book says five friction plates but I only use four because the nuts didn't screw on enough and kept undoing, and that could also contribute to your issue   *dunno*
Title: Re: Outer Primary Chain cover
Post by: Butch (cb) on 11.04. 2017 08:47

 G'day maaate- haven't heard from you in a while, but I don't live here so no surprise *smile*

 

For sure, I probably live here too much, much to the affect of making people crazy but, c'mon Dutch, if you're not living here it is, at least, a well-used vacation home.

Richard L.


I'm not sure that any of us actually exists when we are not here.
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 11.04. 2017 14:51
5 came out and I had the 5 back in with the clutch working ok just had the issue with the case.

If we don't exist how come I keep getting nagged by my Mrs!!

Title: Re: Outer Primary Chain cover
Post by: Topdad on 11.04. 2017 15:29
It's your wifes superpower !  *conf2*
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 16.04. 2017 07:18
Cheers Gents,

all sorted, left the cover off, clutch and all the working parts turning over nicely.

 *smile*
Title: Re: Outer Primary Chain cover
Post by: duTch on 16.04. 2017 10:52

 Good to hear, but be worth keeping an eye on the adjustment with those five friction plates, as I may have said I had issues with the adjuster nuts backing off (It'll drag and slip, and you'll hear them gouging the actual outer casing, as the topic suggests)...after I dumped one out, it's generally behaving, and each time I have it open, I rotate the spare plate in/one out (just so I have five evenly worn and not four worn and one new one )

 Maybe you should also consider changing the topic to something more specific like " plunger Clutch cover" ?
Title: Re: Outer Primary Chain cover
Post by: bikemadinspain on 16.04. 2017 12:52
Very good point Dutch, I will keep in mind.

Also good point about the title, just tried to change but could not figure out how to edit it, any idea?

Regards
Title: Re: Outer Primary Chain cover
Post by: duTch on 17.04. 2017 22:46
 Another thing to keep in mind is that by leaving the cover off doesn't fix it, just removes the symptom but not the cause *eek*..

 
Quote
Also good point about the title, just tried to change but could not figure out how to edit it, any idea?

 Dunno- only thing I can think of is the 'modify' option top right corner (of your posts) , otherwise *dunno*