The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: Oldtoys on 29.03. 2021 13:17

Title: Quizz, where this fit?
Post by: Oldtoys on 29.03. 2021 13:17

Gently re assembling the thing, but need help about where this fit *conf*
One looks like a cable clamp, Speedo or?
The other sounds very engine but ???
Thanks in advance

Title: Re: Quizz, where this fit?
Post by: Swarfcut on 29.03. 2021 14:16

   That washer thing is part number 67 0349.

  If you have almost finished the engine assembly, there may be a little bit of bad news......

 Swarfy.

Title: Re: Quizz, where this fit?
Post by: fffcycles on 29.03. 2021 14:20

The oil flinger for the primary side crank bearing ? I just put mine in and that is the start of the engine rebuild so guaranteed bad news.
Frank

Title: Re: Quizz, where this fit?
Post by: Oldtoys on 29.03. 2021 15:51

Thanks
Merde!!!!! *problem* *pull hair out*
Plan B from chain case side may be a bad option...

Title: Re: Quizz, where this fit?
Post by: Swarfcut on 29.03. 2021 16:36

 I said there  MAY be a problem. If the engine has an oileal on the crank, (post 1953, B Series Crankcases) that slinger is not used and is spurious to your engine. If there is no seal, early engines, then you need it, and the drive side outer  race has to come out. The good news is that as long as the race goes back as was, crank float adjustment is not affected.

 Swarfy.

Title: Re: Quizz, where this fit?
Post by: Oldtoys on 29.03. 2021 17:05

This is 51 so no oil/air barrier through the bearing.
I need to take some substance and pass a night  *sad2*

Title: Re: Quizz, where this fit?
Post by: Swarfcut on 29.03. 2021 19:15

 You may be the first member of the forum to report on the effectiveness or otherwise of this part. Worst scenario is that oil will enter the primary chaincase. Second worse is that oil will leave the chaincase.  With the usual wet sumping on standing that occurs, could be that the overall effect is minimal. One things for sure, that primary chain will get some lubrication from time to time.

 Swarfy.

 Additional  Google translated Merde as Feck.   Probably a loose translation to express the same feeling of despair.

Title: Re: Quizz, where this fit?
Post by: Oldtoys on 29.03. 2021 20:03

I agree, fluid translation will happen just by flow but also pull and pushed by the vaccum in the crank case usually controlled by the air valve on timing side. The volume of air will be 3 X. Speculations at this stage but I begin to consider a full day action to extract and dismantle entirely the thing when all the process is fresh in my memory.
Not proud of this, we sometimes need a lesson to keep humble.

PS, "Merde" is more simply shit, and can be used as a smooth sentence ponctuation in some french regional dialecte... *smiley4*

Title: Re: Quizz, where this fit?
Post by: spanersc on 29.03. 2021 20:21

The bracket is a speedo cable clip, part number 67-9039.

Title: Re: Quizz, where this fit?
Post by: Minto on 29.03. 2021 21:26

My 52 motor, as far as I can tell, has been rumbling along without one. No problems there, plenty elsewhere.
That said I have managed to procure an item from Draganfly which I intend to install this time round. Though the item from DF is flat rather than dished like yours (correctly).
Jase

Title: Re: Quizz, where this fit?
Post by: WozzA on 30.03. 2021 05:39

Did you run over the bracket with the lawn mower?   *dunno* *pull hair out*

Title: Re: Quizz, where this fit?
Post by: Minto on 30.03. 2021 16:51

My drive side as it was taken off, no flinger...
Jase

Title: Re: Quizz, where this fit?
Post by: Triton Thrasher on 30.03. 2021 18:09

My 650 twin of another marque has never had an oil thrower or oil seal on the crankshaft drive side.