The Ariel W/NG is another such bike with only one tap and balance pipe.:rage: Ron

email (option): ronpier@talk21.com

All I can add is that my M20 with two plain taps will get you from Aylsham to Swanton Morley, about 15 miles , on a very dark night on reserve. I'm pleased to say
Richard

So 2 main taps is the way to go? (No reserve tap) , just to finish off what’s the thread size required? My 2 taps leak like a sieve!

email (option): neil.blount@hotmail.co.uk

Originally the taps on a WM20 were 1/8 BSP both ends, But lots have been changed now to the more common 1/4 BSP. Ron

email (option): ronpier@talk21.com

I have got so fed up with leaky original tasp that I have changed ovefr to Bap taps on all my bikes. I get them in pairs (maoin and reserve). Admittedly a bit more fiddly to operate on the M20 due to the carb cables being right in front of them but a price worth paying for long term reliable taps.

Ditto...BAP taps are inexpensive and effective..I've used them for years. No good for rivet counters of course....:relaxed: ...Ian

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