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Rocker cover NG 350 1936

Posted: Wed Aug 03, 2022 3:09 pm
by MikeCrook
Anyone have a rocker cover for the above ? I believe the 500cc is the same not sure about WNG. Its the left hand as sitting astride the bike , inlet ?.

I dont mind buying two if it helps.

Thanks

Re: Rocker cover NG 350 1936

Posted: Wed Aug 03, 2022 6:04 pm
by Roger Gwynn
Do you mean rocker cover? The 1936 should have 'open' valves with a single rocker box split horizontally enclosing the rocker gear with 2 sheet metal dome cover over the upper ends of the valves. From 1938 there are 2 rocker boxes, an exhaust at the front and an inlet at the rear. No similarity between the 1933-37 version and 1938-58 one. The earlier one had different boxes for the 250/350 and the 500. Have a look in a parts book and see if you can see the parts you need.

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 7:15 am
by Andy H
You could post a photo to show us what you need.

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 8:40 am
by MikeCrook
As you say Roger they are sheet metal domes , part no 85734,A7/413 cover for rocker adjustment.
Thanks .

Mike

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 10:06 am
by Roger Gwynn
I am having a conversation with Matthew Gellert is Oz about making these. Awkward little suckers but he says he has a way. Not seen him on the forum so I will ask him about selling in the wider world and let you know.

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 10:09 am
by Roger Gwynn
Just checked with him and it is the inner covers 871-34, not the caps that he is making. Sorry to get your hopes up.

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 2:34 pm
by mark.prizeman

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 5:45 pm
by MikeCrook
Orderd from drags, problem was not knowing what to call the part.

thanks Roger and Mark .

Re: Rocker cover NG 350 1936

Posted: Thu Aug 04, 2022 6:06 pm
by mark.prizeman
As an act of marque revenge the Valve spring enclosing caps 871-34 (571-34) can be made from ready chromed BSA bantam plunger shrouds...

Re: Rocker cover NG 350 1936

Posted: Sun Aug 14, 2022 1:01 pm
by Roger Gwynn
The clips to hold these caps on are available from Michael Browne in Oz ambrowne@bigpond.com see https://www.australian-ariel-register.c ... browne.pdf
864-35 and 866-35