Author Topic: A10swing arm identification  (Read 1445 times)

Online berger

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Re: A10swing arm identification
« Reply #45 on: 28.10. 2018 01:45 »
plam on a plunger crinkle hub the bearing sleeve is 67-6061 and hub is 67 -6126  .. hub on 54/55 swing arm is 67/6136---[ I may have a crinkle hub for plunger stashed away if I find it I will compare to my swing arm one tmow] the bearing sleeve on a 54/55 model part number 67-6027 has a long and short side where the bearings fit  and I think it is  possible to fit it the wrong way {not too sure long time ago} could you measure the  length of the swing arm ,? I will measure mine as well as in between its forks and see if there is a difference------ 1956/57 used full width hub  as did I think 1960 to 63, from frame number GA7-101  I don't know about 1958/59 no data

Offline Plammimam

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Re: A10swing arm identification
« Reply #46 on: 28.10. 2018 09:31 »
Berger, the swing arm measures 16 1/2 inches from inside centre of the cross tube to the end of the wheel lugs, I put a rule across the end of both swing arm lugs to get the distance in the centre, so we are on the same page.
Width between the lugs is 7 inches
The 67-6027 bearing sleeve looks the right way round with the long end to the right side where I have spacer 67-5890 fitted to flush of the end of the tube for the 67-6028 spacer to fit against.
I did note the 67-6027 spacer sits slightly under the middle/ inner bearing, you can see that on previous pictures. I thought should have been flush?
I have also seen the hubs with rivets or bolts in the centre, mine has neither, it is clean. May help identification

Offline duTch

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Re: A10swing arm identification
« Reply #47 on: 28.10. 2018 13:49 »

 
Quote
......I have also seen the hubs with rivets or bolts in the centre, mine has neither, it is clean. May help identification..

 Given that you have a screw-in RH bearing retainer, I'm fairly certain that's a Plunger hub, and the rivet *heads* will be visible inside the hub.

 I know little about Swing-arm models, but any chance of pics of the rest of the swing-arm as this has now morphed to 'wheel bits ID', and the brake pedal set-up may also help with ID...?

  Looking at part lists shows similarities between 'Late A10' & some A65's but with variations....

 
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

Offline Plammimam

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Re: A10swing arm identification
« Reply #48 on: 28.10. 2018 14:05 »
Morning all, I decided to strip out all the bearings and check the installation from scratch, found a number of assembly issues where not pressed together properly. I reassembled to remove all the additional space and I can now fit together with the 67-6028 spacer but I have to spring the swing arm to clear the hub plate when fitting the spacer. So I am now good with the exception of the 1 inch slot in the tight swing arm lug for which I will have a bush made.
Thanks all for the assistance I certainly learned a lot this week

Online berger

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Re: A10swing arm identification
« Reply #49 on: 28.10. 2018 15:00 »
I have not been to the pub, ok plam getting somewhere now swing arm same as you on length , mine is a tad under 7/1/16 wide- this may explain why my distance piece 67-6028 slides in no problem along the dust cover to meet up with collar 65-5890 and inside of arm  . stub axle 3/1/4 long ---what I think is an A 65 stub is 3/5/8ths.-- the long side of bearing sleeve 67-6027 is where collar 65-5890 sits, the bearing sleeve is 3/7/16ths long.-there is only one bearing retaining ring LH thread that holds the bearing in the sprocket side. collar 65-5890 and distance piece 67-6028 hold the right side bearing by butting up to  the inner race .as dutch says plunger has two retaining rings.   Swing Arm one retaining ring on sprocket side.  ----plain as mud my brain hurts.  now for something that may matter or not , on a plunger crinkle hub right side the outer bearing housing with the threads for locking ring stands proud of the hub crinkly bit  , on swing arm  this right hand side where the bearing outer sits is sunk back from the edge of the crinkly bit. the bearing sleeve -67-6027 where collar 65-5890 fits stands a tad proud of crinkly bit when its all in situ . as you have pointed out maybe the only thing you will nave to do is make a bush to take up the space of the bigger swing arm slot *yeah* *yeah* *yeah* *yeah* *yeah* *yeah* *yeah* *yeah* *yeah*   I will have to go to the pub tomorrow *countdown* *beer*   

Offline duTch

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Re: A10swing arm identification
« Reply #50 on: 28.10. 2018 15:16 »

 
Quote
....... now for something that may matter or not , on a plunger crinkle hub right side the outer bearing housing with the threads for locking ring stands proud of the hub crinkly bit  , on swing arm  this right hand side where the bearing outer sits is sunk back from the edge of the crinkly bit. the bearing sleeve -67-6027 where collar 65-5890 fits stands a tad proud of crinkly bit when its all in situ . as you have pointed out maybe the only thing you will nave to do is make a bush to take up the space of the bigger swing arm slot *yeah*.......... *yeah* ........

 I think the factory just machined off the redundant thread, but I expect the A65 ones with external thread for the speedo drive will again be longer (which is irrelevant here)....but I'm still curious what swingarm Plammo has, especially looking at the chainguard mount... *conf2*...which may have been modded on...

 
Quote
....  I will have to go to the pub tomorrow *countdown* *beer*   

 Why put off what you can do today...?....and again tomorrow... *smile*

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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Re: A10swing arm identification
« Reply #51 on: 28.10. 2018 15:33 »
early start tomorrow dutch  so not a good idea today, don't know when to throw towel in *beer*  so tomorrow it is. yes that swing arm slot is confusing.com

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Re: A10swing arm identification
« Reply #52 on: 28.10. 2018 15:41 »
yes dutch I just had another look at the pictures IT is a plunger hub-- two retainers but the bearing sleeve sits same as mine ----- I think *pull hair out*

Offline duTch

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Re: A10swing arm identification
« Reply #53 on: 28.10. 2018 15:47 »

 
Quote
.... IT is a plunger hub-- two retainers but the bearing sleeve sits same as mine ----- I think *pull hair out*

 yep bearing spreaders are deffo diffo    *smile*
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

Offline Plammimam

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Re: A10swing arm identification
« Reply #54 on: 28.10. 2018 17:00 »
The chain guard mounts are an add on, I doubt BSA welding was that bad.

Offline PatM20

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Re: A10swing arm identification
« Reply #55 on: 31.10. 2018 14:08 »
Hi

My swinging arm, which looks BSA is 11/16" nearside spindle slot and 1" offside.

The larger offside slot looked as if it was machined that way.

Regards

Pat