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1962 A65 rear wheel mounting ?
#822424 09/05/20 12:30 pm
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Hi ! one year ago i changed the rear wheel sprocket on my 62' A65 Royal Star. I had to take off spindles, bushes and spacers .... but now i think i didn't mount it back again right : on the left side, there is a kind of conical spacer ( 68-6015), but when everything is strongly tightened, this spacer moves on the axle/spindle (5 mm)

Isn't it supposed to be pressed by the tightening on the inside of the swing arm ?

on each side, there are big washers (42-6078 and 42-6336), i firstly put it outside of the swing arm. I now tried to put it inside the swing arm (to make it "spacers" more than washers) it didn't change this problem


Does anyone here have experience with this kind of wheel ?

you can see the schematic here : https://www.draganfly.co.uk/bsa/bsa/a50-a-a65/1962-63/category/195-rearwheel

Thank you for your help !


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Re: 1962 A65 rear wheel mounting ?
Rokplo #822454 09/05/20 6:40 pm
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Undo the wheel spindle on the RHS 68 - 6007 a couple of turns, now see the wheel nut if 42 - 6 077 on the LHS will tighten any more.

if you tighten the RHS before the LHS it may cause the problem you describe. If that doesnt fix it further investigation will be needed.

Last edited by gavin eisler; 09/06/20 7:35 pm. Reason: wrong part number for wheel nut

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
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Re: 1962 A65 rear wheel mounting ?
gavin eisler #822525 09/06/20 6:48 am
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Thank you Gavin, i'll have a try ..... do you confirm that the washers must be "inside" the swingarm ?


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Re: 1962 A65 rear wheel mounting ?
Rokplo #822531 09/06/20 8:58 am
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No. I do not confirm.
The washers should be outside the Swinging arm


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: 1962 A65 rear wheel mounting ?
gavin eisler #822534 09/06/20 11:06 am
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on the left side, the 42-6078 (spindle nut washer) is not supposed to be on the inner side of the swing arm ?!?!? that sounds very strange for me .....


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Re: 1962 A65 rear wheel mounting ?
Rokplo #822591 09/06/20 7:39 pm
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A wheel spindle nut needs a washer, sounds normal to me, otherwise its wouldnt be called the "spindle nut washer" in the parts list.
if it was meant to go inside it would be called a spacer.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
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Re: 1962 A65 rear wheel mounting ?
Rokplo #822603 09/06/20 8:49 pm
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The full width rear hub wheel is fitted as follows,
Wheel and hub are separated by the 4 large bolts which join the hub to the sprocket.

The sprocket and carrier with bearing and short wheel spindle are fitted to the swinging arm first.
If at this point , with out the wheel attached, just when fitting the sprocket alone, if you cannot fit the short spindle without 5 mm of slack ,
then possible you have the wrong spindle.or perhaps the wrong spacer 68- 6015

After the sprocket side is fitted , the wheel and brake are mounted by the four bolts, , the spacer adroit then the long wheel spindle is fitted to secure the whole lump to the swinging arm.
The sprocket side is supposed to remain in place, to replace a tyre the wheel spindle is removed from the RHS( adroit) , the RHS spacer is removed , , then the 4 bolts come off to part the wheel leaving the sprocket attached, this saves messing with the chain.
Maybe you know already, if you dont I hope it might help.

If it all fits in with excess play at either side , any number of parts may be wrong, one mistake that you can make is to leave out the internal spacer 42 6323. If all the parts are not original, it is very easy to end up with missmatches from different models and years which look similar but differ in key dimensions.

Last edited by gavin eisler; 09/06/20 9:44 pm.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: 1962 A65 rear wheel mounting ?
Rokplo #822610 09/06/20 9:41 pm
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I have looked harder at the this.

To have 5 mm of play between the part 6015 spacer and the swing arm, either the spindle does not fit the swingarm slot properly, it should engage on two flats, or ,either spacer 6015 or spindle 6014 is the wrong part, could be either, could be both.

This is dangerous, if spacer 6015 is free to move then the bearing centre is not trapped corectly
the sprocket assembly should be locked solid to the swing arm with no play at all , spacer 6015 should push on the inner bearing ring, the sprocket should spin freely .
Spindle 6014 has 3 steps, the largest diameter locates against the dust seal and bearing inner ring

the second step should be the fit of the bearing depth / thickness

spacer 6015 should fit on the third step with the large side to the bearing and be locked in place when its assembled with the spindle nut tight.

the third step is where the 2 flats locate on the swing arm slot, then threads to take the nut

Either the third step of the spindle 6014 is too long or incorrect in other ways , or spacer 6015 is too short .
Maybe it can be made to work with additional spacers, beware , check sprocket alignment, this may be affected , as may the centre line of the back wheel.

I found a PDF on line showing the rear sprocket and spindle bearing repair, page F6 fig 8 in the Work Shop manual shows the spacer 6015 with the large end, AND a smaller spacer the same OD as the thin end of 6015, this is not shown on the dragnfly info or in the WSM text. This was on a private members site so I cant link it , sorry. Could be the answer one unnamed no part number piece that just exists as a piece of forgotten artwork.

Last edited by gavin eisler; 09/06/20 10:13 pm.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: 1962 A65 rear wheel mounting ?
gavin eisler #822660 09/07/20 7:04 am
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Thank you for theese informations .... i found this post about the same problem :

http://www.britbike.com/forums/ubbt...spacer-here-on-the-back-wheel#Post605721

In this post, someone says that the 42-6078 "spindle nut washer" should be inside the swingarm, between the swingarm and the 68-6015 spacer .... It seems that this "washer" is thicker than the right side washer (42-6336), and if if it was just a simple washer on the outside of the swingarm, it wouldn't need to have a different thickness ? there is a pic at the end of this post, showing it in place, and it looks logical that way ....

What do you think about it Gavin ?


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Re: 1962 A65 rear wheel mounting ?
Rokplo #822665 09/07/20 9:14 am
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I think a nut should have a washer beneath it, especially a wheel spindle nut. if you need a spacer to make it work fit an additional spacer instead of borrowing the nut washer to use as a spacer.

Last edited by gavin eisler; 09/07/20 9:15 am.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: 1962 A65 rear wheel mounting ?
gavin eisler #822669 09/07/20 9:50 am
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Found another schematic including a spacer of this kind "68-6018" ... it appears in the 1965 schematics ... all other parts are the same refs (68-6015 spacer, 68-6014 half spindle etc ...) there is just this additional spacer - it's 8 mm thick. Seems to be what i am missing.

I believe my rear wheel has somme mixed parts coming from a 65', and this spacer had been forgotten ....

the 65' schematic :

https://www.draganfly.co.uk/bsa/bsa/a50-a-a65/1965/category/1036-alloy-hub


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Re: 1962 A65 rear wheel mounting ?
Rokplo #822672 09/07/20 11:40 am
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That looks like the fix.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: 1962 A65 rear wheel mounting ?
Rokplo #822836 09/08/20 4:32 pm
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After some research, it seems that the 68-6015 spacer exists in two forms : a large one, and a smaller one that needs the 68-6018 ring spacer to get the right thickness. Strangely, the two versions have the same ref number, but were used on different bike years. You can find the two versions on Draganfly, and clearly see that there is a big difference between the two versions ..... Another BSA mystery ......

Last edited by Rokplo; 09/08/20 4:32 pm.

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Re: 1962 A65 rear wheel mounting ?
Rokplo #823100 09/09/20 11:59 pm
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Sneckitty doss.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod

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