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Yes those lovely bowls that sit under early Manx tanks. I’m lucky to have a pair on my machine but sadly one weeps fuel from the taper valve. Cleaned,lapped and polished butt still weeps.
The taper valve tap is held in place by a Quadrant plate to limit rotation to 90 degrees, pushed into place by a spring lock washer a nut and a split pin. I take it the spring pressure on the quadrant plate draws thee tapeeer valve into position..
My question is, do you run out of pressure on the quadrant plate when it can no longer travel on the square drive.
Any help gratefully received on this annoying problem. Lockdown gives me the time to investigate but not sure what I’m doing
Cheers all
Jon
Fixed temporarily
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Fuel taps.
Hi Jon,
Yes these taps are a long standing problem. Paul makes new ones, but to achieve the quality makes them quite expensive. The old repair was to cut off the bottom part of the tap and bore and tap (no pun intended) the sump for an ordinary Enots push tap. This looks a bit of a bodge, but is the easy way out. I have a couple of sumps like this and hope to solder a modern cut back lever tap to look like the original. Another possibility might be to reface the taper and get it hard chromed, or try and find a new taper from a modern tap and make it fit.
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After a few discussions with Paul Norman I elected to experiment by giving the taper a coating of solder. Just heat it, bakers fluid and a bit of plumbers solder wiped with a wet newspaper, lapped it in and reassembled. Initially it would still weep in the closed position but hold when open. Due to frustration I then decided to fit it 180 degrees out and turn the other way. And it seems to work. Not entirely happy but may well go with a similar route but nickel plate the pin to bring the holes in line.
cheers jon