OK it's not a M20 but I'm going nuts trying to find adaptors so I can fit "normal" taps to my G80.
I need adaptors that are female 1/4 BSP to male 1/8 BSP. Has anyone got an idea where I can get these?
All I can find on-line are crappy things for paint spraying from China. :confounded:

there are plenty of BSPT and NPT adaptors around but I am after the non-tapered variety.

cheers
Pete

email (option): petercomley@web.de

A 1/4 to 1/8 reducer would be quite a normal fitting. But the way I read your request, it sounds like you are asking for an 1/8 to 1/4 "increaser"?? (Is there such a fitting?) I reckon this would have to be specially machined and would move your tank outlet down by at least 1/2".

Very rough sketch! Ron

email (option): ronpier@talk21.com

Hi Ron

I am after the reducer like in your sketch, female 1/4 down to male 1/8. If that is a standard fitting,any idea where I can get one (or 2)?

email (option): petercomley@web.de

It's the sort of fitting in the plumbing trade that would be called an M&F fitting (Male and Female). I think you would be better to get them made by an engineer. Ron


Although I just found this https://www.exalto-emirates.com/04-pumps-plumbing-and-sanitary/06-fittings/reducing-nipple-with-m-f-heads-brass-art-0246/reducer-18-x-14-m-f-brass.html

email (option): ronpier@talk21.com

Is one of those too long ears on the donkey problem?

why not just open out and re-tap the holes in the tank.?

Although I can't see what your problem with the 1/8 taps is anyway.
Never had any grief with them.

Ken I think Pete's problem is the unavailability of modern replacement taps in 1/8 BSP. I did think to suggest tapping out the original threads, but it depends if there is sufficient thickness to the bosses. Ron

email (option): ronpier@talk21.com

My problem with the original taps, with the cork inserts etc, is that I have several bikes and as the Matchless gets used very infrequently, the corks dry out and it pisses petrol everywhere when I do fancy a ride on it. Putting a couple of reliably non-leaky type taps on, of which I have a drawer full, is for me the answer. I just need an adaptor or two. I could knock up some on the lathe but would have to buy another BSP Tap (got a die) which is probably more than the cost of buying adaptors -if they do indeed exist!

I don't want to retap the tank...one day I will die and the next owner may want to fit the originals. :laughing:

Ron, thanks for the link.....but in the U.A.E., there must be someone more local!

email (option): petercomley@web.de

This is what you want :-

https://uk.rs-online.com/web/p/brass-bronze-threaded-fittings/0439975/

or in steel for hydraulics which would be stronger.

https://uk.brammer.biz/product/1153966/name/PARKER-THREAD-REDUCER-EXPANDER-RI1-8EDX1-4CF

Pete, you'll have Parker Legris dealers anywhere, but Parker do have odd minimum box quantities.

Surely then, 1/8 taper cock brass taps are the way to go and perfectly period.

with the way you are intending ultimate authenticity is not an issue?

When I lay a bike up the empty tank gets litre of two stroke mix in it,stops the tank rusting and wets the cork.