Author Topic: A10 gear box gaskets or gasket maker?  (Read 196 times)

Offline mario medeiros

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A10 gear box gaskets or gasket maker?
« on: 05.05. 2021 19:19 »
What is used more to reassemble your gear box dry gaskets or with some gasket maker or no gasket and just use gasket maker?

I think the one i use is Permatex moto seal much like Yamabond.

Thanks

Online muskrat

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Re: A10 gear box gaskets or gasket maker?
« Reply #1 on: 05.05. 2021 21:43 »
G'day Mario.
I make most of my gaskets, mostly 0.4 & 0.8mm.
For sealant I use Permatex #3 aviation. If carefull the gaskets can be re-used.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
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Offline Slymo

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Re: A10 gear box gaskets or gasket maker?
« Reply #2 on: 06.05. 2021 01:05 »
I use Flexoid 0.4 or 0.8mm assembled dry and retightened after a couple of days. Don't leak and can be re used a couple of times at least.
NZ

Online KiwiGF

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Re: A10 gear box gaskets or gasket maker?
« Reply #3 on: 06.05. 2021 02:35 »
What is used more to reassemble your gear box dry gaskets or with some gasket maker or no gasket and just use gasket maker?

I think the one i use is Permatex moto seal much like Yamabond.

Thanks

From memory the gearbox gaskets are unusually thin, maybe 010” if you use thicker material (or none) it may affect end floats etc.

New Zealand

1956 A10 Golden Flash (1st finished project)
1949 B31 rigid “400cc” (2nd finished project)
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Online Greybeard

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Re: A10 gear box gaskets or gasket maker?
« Reply #4 on: 06.05. 2021 09:39 »
Just a quick note. I found on my Plunger bike, after the box was overhauled, I had to remove the inner cover gasket before the gearbox would work properly.

Online bsa-bill

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Re: A10 gear box gaskets or gasket maker?
« Reply #5 on: 06.05. 2021 09:44 »
Quote
I had to remove the inner cover gasket before the gearbox would work properly.

Funny old world GB, I had to put an extra gasket in to get mine going  *smiley4*
All the best - Bill
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1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline Swarfcut

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Re: A10 gear box gaskets or gasket maker?
« Reply #6 on: 06.05. 2021 09:55 »
 Good mating faces, paper gaskets and Hylomar work for me. In the old days it was Red Hermetite.  Both are non setting types. Paper gaskets and Silicone work for bruised casings, but as always, not too much. Gasket thickness can be critical in some cases, as in earlier posts.

 Swarfy.

Online Black Sheep

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Re: A10 gear box gaskets or gasket maker?
« Reply #7 on: 06.05. 2021 10:04 »
A smear of gease on the gasket works for me. Also means gasket is reusable. My contribution to saving the planet.
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Offline BSA_54A10

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Re: A10 gear box gaskets or gasket maker?
« Reply #8 on: 06.05. 2021 14:37 »
The thickness of the inner gasket controls the end float in layshaft and moved the mainshaft with respect the the 4th gear dogs.
The thickness of the front gasket controls the clearance for the kick start & moves it with respect to the kick start pinion.
Because of all of the variations on the thicknesses of things like the flange on top hat bushes you some times need to alter the thickness of the gaskets .
I have just done a box for the M20 and had to put a 1mm front gasket in there to prevent the kick start fouling and also jambing on the ratchet

So button the box up full tight and verify that the kick start will return properly and all gears select properly before you even think about gaskets
I use some shim washers between the inner & main castings and again between the inner & outer to determine what ( if any ) thickness of gaskets is required.
T was always gong to make up some gasket sets from shim stock so I could do this properly but another one of those "roundtuit" jobs for when I find the box that I stored the spare time in.
Bike Beesa
Trevor