Author Topic: Combined petrol tap-fuel filter for 1926-on Douglas (600 SV, maybe EW, others?)  (Read 2090 times)

0 Members and 1 Guest are viewing this topic.

Offline cardan

  • Master Member
  • ****
  • Join Date: Jul 2007
  • Posts: 667
  • Location: Adelaide, South Australia
    • Leon's Vintage Motorcycle Page

I've found (almost) 5 of these taps amongst Jack's stuff. Made by EWARTS, but also stamped with the DK trademark. Just the thing to finish off that restoration. More info at http://www.douglasmotorcycles.net/index.php?topic=5093

(Also possible to use these to amuse your friends. If you leave one on the table while having coffee/tea/meal with friends it is IMPOSSIBLE for them to resist playing with it! They are lovely items.)

$A125 each.

Leon

Offline Michel H

  • Full Member
  • **
  • Join Date: Feb 2010
  • Posts: 76
  • Location: Brussels-Belgium
Hello,
I just break the petrol tap of my EW350. How much ask you for one complete tap (+ shipping cost to Belgium) ?
Regard.

Offline Jonathan

  • Full Member
  • **
  • Join Date: May 2007
  • Posts: 31
  • Location: Geelong, Victoria, Australia
Hi Leon, Jonathan from Geelong. (We met at Victor Harbour - 1924 TS, 1925 CW, 1947 T35)
I would like to buy one for my S6 Project.  It looks like the right tap for the Job.
I will be back in AU from holidays on the 18th June.
You can reply through this site or privately on 0438 513 812

Thanks
Jonathan H.

Offline dougs6

  • Member
  • *
  • Join Date: Jan 2009
  • Posts: 7
  • Location: Timaru, New Zealand
Hello Leon,
I would like to buy 1 of the taps please for my S6.
Can you let me know postage to NZ please.
I am OK with paypal

Thanks Stewart

Offline cardan

  • Master Member
  • ****
  • Join Date: Jul 2007
  • Posts: 667
  • Location: Adelaide, South Australia
    • Leon's Vintage Motorcycle Page

Just back from a week away. I had hoped that some of my time would have been devoted to "Douglas-ing", but instead lots of Rudge-ing, tidying, and tool-ing.

Re the taps: I've just posted the the following message on another post, and it applies to these taps:

"Interesting discussion. I would have said that all petrol taps of this size have 1/8 BSP male threads on the inlet, but measuring a range of tapes - Douglas and non-Douglas - I've found that while all have 28 tpi, some are BSP (0.383" or there-abouts) and some are 0.375" (i.e. 3/8-28). Bizarre!

"I'm even more confused at the outlet end. Most early (pre-1930) taps are about 7/16" major diameter. All seem to be 19tpi, but some are about 0.430" major diameter, while others are the full 7/16" (0.4375"). I suppose that the 0.428" 19tpi is a pipe thread of some sort, and the other is some form of 7/16-19.

"Yes there's only about 8 thou difference between the threads, but there are certainly different sizes! In practice, the different parts could be screwed together providing there is not too much wear."

Three of the petrol taps/filters for sale seem to have 1/8 BSP threads on the inlet end, and two seem to have 0.375-28. I don't understand this, but from my measurements on non-Douglas taps these two sizes appear in other taps. I now understand why I've experienced taps so tight that they almost seize in the tank fitting (0.383 tap, 0.375 hole), and others sloppy enough that a bit of teflon plumber's tape is useful (0.375 tap, 0.383 hole).

Michel - Doug tells me he has seen the combined tap/filter in some EW catalogue photos, but decide for yourself if it's the tap you want and let me know. The price is $A 125 + postage.

I'll try to get to the post office in the next day or so to get prices on postage. I think all the taps are now spoken for.

Cheers

Leon

Leon

 

motorcycle