Can anyone tell me the size of the holes in the gauze of a Burgess air filter as fitted to the WB30 and the side gauze of a Vokes tank top filter as fitted to the M20?....Ian

email (option): ian@wright52.plus.com

I have both Ian, but how do you measure the holes? Ron

email (option): ronpier@talk21.com

Hi

When I had the same issue with the Amal screw on filter with the metal wire gauze circular discs (30/339) my solution was to offer up small drill bits of known diameter until I found one that was a snug fit. I'm not familiar with the Vokes filters. If they are a pressed gauze with the elongated holes it may be trickier to measure

email (option): steve@bsa-inc.com

email (option): wd.register@gmail.com

Might be easier to think of it like this.
Also find a child that can count.
Good eyes are required.

Holes / Wires Per Linear Inch = 50
Holes / Wires Per Square Inch =2,500
Wire Thickness = 0.2mm
Hole Size / Aperture = 0.308mm

Mark

email (option): pes.sales@btconnect.com

'A hole is a defined nothing, a nothing with an edge... 😄' ...Or it could be a something with a nothing...:laughing:

I'd probably go for a snug fitting drill...I've had both filters but now have niether!!....:stuck_out_tongue_winking_eye: ..Ian

email (option): ian@wright52.plus.com

Haha! I didn't invent this Ian! I work for the Belgian subsidiary of the German company Trumpf. They made this philosophic video...

email (option): wd.register@gmail.com

Come on gentlemen..Check your holes....Ian:upside_down_face:

email (option): ian@wright52.plus.com

Ian, I have a NOS Vokes filter here to fit a Norman T300 generator - it looks identical to the M20 version but I haven't directly compared them.
Bottom gauze holes are 1/8" and side holes 9/64".
Not sure if that helps.
Cheers,
Adam.

email (option): adamfelstead4@gmail.com

Ian, I have a NOS tanktop Vokes (I think from a Royal Enfield but not sure).

That has 1/8" holes on both the sides and bottom.

The hole spacing is offset on each row and if you take the measurements for the vertical centre to centre spacing on the small red cross in the picture below that distance is 0.350" as near as I can make it with old original paint.
The horizontal spacing for for each row is close to 0.200". It is an awkward thing to measure given the offset arrangement but hopefully that is of use?

email (option): rays54@hotmail.com

Thanks chaps..Just the Burgess now....Ian:relaxed:

email (option): ian@wright52.plus.com

Thanks chaps, just the Burgess now...Ian:relaxed:

email (option): ian@wright52.plus.com

Hi Ian.....Heard you the first time!:relaxed:

Mine is a bit squeezed in between other bikes at the moment, but I'll take some small drill bits and drag my gammy limbs in there if I can and report back later. Ron

email (option): ronpier@talk21.com

email (option): ronpier@talk21.com

Ian a 3/32" drill bit fits perfectly. Ron

email (option): ronpier@talk21.com

Thanks Ron....Ian:relaxed:

email (option): ian@wright52.plus.com

Bit late to the party here, but I have had about 50 Vokes filters over the years, and my observation on the side mesh is that sometimes the same material was used as the bottom, and sometimes a much finer mesh was used. I have drawings, but I didn't make them, and they are in mm.

Also have sketches for the side mounting straps with imperial sizes.

Give me a shout when you need them Ian.

Cheers,

Lex

email (option): welbike@outlook.com