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The BSA A7-A10 Forum
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Technical (Descriptive Topic Titles - Stay on Topic)
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Gearbox, Clutch, Primary
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Primary chain rubbing
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Topic: Primary chain rubbing (Read 1075 times)
Drew Back
A's Good Friend
Join Date: Jun 2014
Posts: 172
Karma: 0
Primary chain rubbing
«
on:
15.08. 2014 14:28 »
Got my primary all together now chain alighnment pretty good seems like duplex primary chain is rubbing cases behind clutch basket I do have a clutch thrust washer installed Do I need a thicker washer seems like the one Im using is pretty thick any one have a good pic of what it should look like??I do have the sloped part facing the tranny I think that is the right way around..
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muskrat
Global Moderator
Wise & Enlightened
Join Date: Jul 2009
Posts: 11046
Karma: 132
Lithgow NSW Oz
Re: Primary chain rubbing
«
Reply #1 on:
15.08. 2014 21:08 »
G'day Drew. Probably a silly ? but have you installed the abutment ring (two halves) behind the thrust washer?
Cheers
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'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7
Drew Back
A's Good Friend
Join Date: Jun 2014
Posts: 172
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Re: Primary chain rubbing
«
Reply #2 on:
16.08. 2014 04:55 »
No not silly I dont have that part or see it in the book?? Do you have a good pic of how this all goes together like a real time photo??I will be away for weekend but will try to get pics up of what I have sunday.
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duTch
Ricketty Rocketty Golden Flashback
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Join Date: Oct 2011
Posts: 4528
Karma: 41
Re: Primary chain rubbing
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Reply #3 on:
16.08. 2014 05:25 »
Good lateral thinking Musky, no 'ifs and or buts/butts' about it-
Drew, in the parts book- item # 74 p/n 67-3251
http://www.draganfly.co.uk/index.php/accessories-a-misc/product/14326-
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia
morris
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Join Date: Aug 2012
Posts: 1779
Karma: 27
Antwerp, Belgium
Re: Primary chain rubbing
«
Reply #4 on:
16.08. 2014 09:47 »
Hi Drew,
ring looks like this, and fits in the groove on the gearbox shaft behind the chain wheel
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'58 BSA A 10 SA
'52 BSA A 10 Plunger
'55 MORRIS ISIS
The world looks better from a motorbike
Belgium
Drew Back
A's Good Friend
Join Date: Jun 2014
Posts: 172
Karma: 0
Re: Primary chain rubbing
«
Reply #5 on:
16.08. 2014 11:56 »
Thank You for the pic I shall have to look for that piece in my parts jumble..Will let you know how I make out..
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Drew Back
A's Good Friend
Join Date: Jun 2014
Posts: 172
Karma: 0
Re: Primary chain rubbing
«
Reply #6 on:
17.08. 2014 21:57 »
I could not find that piece anywhere in my stash I guess I need to order it..This is what I have..
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duTch
Ricketty Rocketty Golden Flashback
Wise & Enlightened
Join Date: Oct 2011
Posts: 4528
Karma: 41
Re: Primary chain rubbing
«
Reply #7 on:
17.08. 2014 22:33 »
So just add to Morris, when they arrive, (obviously if in one piece you'll split them) check they fit in the recess in the back of the thrust plate, then hold 'em in place in the groove in the mainshaft with some grease......good luck
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia
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The BSA A7-A10 Forum
»
Technical (Descriptive Topic Titles - Stay on Topic)
»
Gearbox, Clutch, Primary
»
Primary chain rubbing