idler / camshaft pinion

[Russ]

Have just stumbled across a small problem I have, or maybe not?
For the future rebuild of my 51 A10 I have in my parts box an Idler pinion numbered 67-336 and a Camshaft pinion numbered 67-338. I am unable to locate 67-336 listed anywhere while Draganfly has 67-338 listed for an A50 / A65. My parts book,(A7 / A10 1949 to 1953) lists the Idler pinion as 67-335 and the Camshaft pinion as 67-337.
What pinions do I have and are they compatible with my A10.

Thanks Guys,
Russ

Trev, If you happen to read this, I think you gave me one of the pinions I have but can't remember which one.

[a10 gf]

Here's what's been working on my A10 plunger, stamped nr's are unclear.

From left to right:  44   49   22,  & from the photo check the placement of marks.

And some interesting reading > http://www.a7a10.net/forum/index.php?topic=789.msg5017

[beezermacc]

The critical issue is to make sure you haven't got a rogue gear from a longstroke which have the same number of teeth but timing marks in different places. There are some good pictures of what you should have on the Cheshire BSA website  www.cheshirebsa.co.uk

[Russ]

Thanks Guys,
Excellent photo a10gf I will check mine against yours.
beezermacc you started me on this as I followed your previous post to the cheshirebsa site where I discovered my pinions had different numbers.
I will now check the number of teeth on mine and position of timing marks. If they are right I should use them, however, I'm a bit anal and will probably start a search for pinions with the correct numbers as listed in the parts book. I will then know that those two gears in there have the right numbers. Happy!!

Russ

[RichardL]

Russ,

My parts book lists 67-335 as the idler pinion with spindle and key for 56/57 swingarm with 67-336 as the pinion,only.

Richard L.

[Russ]

Thanks Richard.

Does anyone know if the pinions I have are compatible with my 51 A10 Plunger.

Russ

[beezermacc]

The pinions on all the post-longstroke A7's and A10's are all the same.

[Russ]

Thanks Andrew, that's exactly what I wanted to know.

Russ

[trevinoz]

Russ,
          Don't panic, the number on the part is usually not the part number but one off.

Trev.

[Russ]

Thanks Trev,
Happy now.
Russ