Author Topic: Coventry Eagle Silent Superb Fuel Tap  (Read 419 times)

Offline Nerden

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Coventry Eagle Silent Superb Fuel Tap
« on: June 14, 2018, 06:45:01 PM »
Hi

Could somebody kindly explain what sort of tap I need? Iíve looked at various types but I canít see how I can make them fit- see photo.

Many thanks

Mike


Offline cardan

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #1 on: June 15, 2018, 12:34:44 AM »

Hi Mike,

A quick google shows most restored Cov Eagles of this type use a sliding push-pull (hexag-on) type tap, with a flat slide and cork seals in the body.

However I think I spy in some period photos and adverts an Ewarts-type push-pull tap - the one with the single-ended cylindrical slider with the cork seal attached.

If you want the bike to be very correct, perhaps contact the Cov Eagle marque specialist at the VMCC, or try John Hodson via https://www.coventryeaglemotorcycle.org.uk/index.html to get the real story.

In either case, instead of the tap screwing into the fitting, there is obviously a couple of brass pieces required to complement the tap: a top bit with a thread, and a bottom bit, to secure the tap in position.

Interesting detail - let us know if you come up with an illustration of the original.

Cheers

Leon

Offline 33d6

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #2 on: June 15, 2018, 01:47:03 AM »
Yes, I think I've just ploughed through the same illustrations and the mounting seems to be a curious use of a banjo union. I suspect that will be a bit of a one off turning project. The illustrated spare parts list doesn't show the tap in clear enough detail to check what make.

I think a careful look at a finished restoration is needed.

Cheers,

Offline Nerden

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #3 on: June 15, 2018, 06:31:11 PM »
Thanks both for the replies.

The parts list seems to show a domed nut on top of the union and Iíve seen similar fittings on photos of restored bikes.  I was contemplating a 3/8  bsp banjo bolt and female coupling on the bottom. I need to look at some taps really. Could one of you kindly send a photo of the type of tap you think it needs?

Many thanks

Mike

Offline cardan

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #4 on: June 16, 2018, 12:27:40 AM »

Here's an earlier discussion on the hexagON tap: http://classicmotorcycleforum.com/index.php?topic=5335.msg22597#msg22597

A google search for "ewarts plunger tap" brings up lots of photos, like the one below.

Both tap types were widely used, and there are lots of variants, and lots of modern reproductions.

Cheers

Leon



Offline cardan

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #5 on: June 16, 2018, 12:47:59 AM »

Offline Nerden

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Re: Coventry Eagle Silent Superb Fuel Tap
« Reply #6 on: June 17, 2018, 01:30:39 PM »
Thanks, much appreciated.

Mike