Decent Tank Taps

Do you need anything for your B50??

Moderator: minetymenace

Post Reply
Canberra
>1300
>1300
Posts: 1309
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Contact:

Decent Tank Taps

Post by Canberra »

After shearing <218 <218 yet another tank tap made from high quality butter on my 3 gallon B50SS tank I am wondering has anyone found good replacement fuel taps <201 <201 to fit the tank without re-tapping the threads that can mate up with the standard hose fittings :?: Good quality brass would be preferred, maybe even as standard and reserve versions.

John
User avatar
SteveS
>600
>600
Posts: 604
Joined: Mon Jul 10, 2006 8:28 pm
Location: Nuneaton, Warks. U.K.

Re: Decent Tank Taps

Post by SteveS »

Hi Jon

I'll be interested in any replies you get as one on my B50T has just sheared and one on the WDB40 did the same a couple of weeks ago.

Not sure if its to do with ethanol fuel causing the rubber seal to swell so tight that the force you apply to move the lever overcomes the strength of the metal outer?
Steve Sewell
beat
>1400
>1400
Posts: 5826
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland

Re: Decent Tank Taps

Post by beat »

https://www.usdream.fr/contents/fr/p190 ... racer.html

hi John,

do you mean something like this :?: :?:

beat
Canberra
>1300
>1300
Posts: 1309
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Contact:

Re: Decent Tank Taps

Post by Canberra »

The main problem is the thread into the tank and material used on the taps makes it impossible to tighten the tap securely without it fracturing. The tap body is so soft it easily deforms if you try to hold it whilst tightening and this can cause the seal to fail and hinder the taps rotation. They really have to be treated with kid gloves and after a few times tightening in and out of the tank they just fail. Maybe its a problem of the quality of replacement taps that are being marketed world wide.

Yes Beat that is the design that fails.
beat
>1400
>1400
Posts: 5826
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland

Re: Decent Tank Taps

Post by beat »

I do use this modern Tap sealer stuff outcoming of a Loctite tube.
so no need of tighten it up to near a crack as by a ring gasket.

why not :?:

beat <201
skippy
>1400
>1400
Posts: 1505
Joined: Mon Dec 19, 2011 3:25 am
Location: Horsham Vic Australia

Re: Decent Tank Taps

Post by skippy »

I have thread tape on mine to seal them. the taps come from Mark Cook. I have had to change them from tank to tank a few time without a problem.
Doug
Should never have sold them old motorbikes
Canberra
>1300
>1300
Posts: 1309
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Contact:

Re: Decent Tank Taps

Post by Canberra »

I'm beginning to think that there are various quality available on the market. I use thread tape on my taps and it is very difficult to tighten the nut and sealing washers without the tap turning. This means holding the body of the tap when the material is rather prone to deformation damage. I figure the 1/4 NP thread that goes in the tank stretches on the nut and after a few installations splits the thread.

I have never tried Loctite first and allowing it to cure before tightening up the locking nut. What form do you use Beat?
beat
>1400
>1400
Posts: 5826
Joined: Sun Jun 04, 2006 5:33 pm
Location: Switzerland

Re: Decent Tank Taps

Post by beat »

Canberra wrote: Wed Dec 02, 2020 2:15 pm What form do you use Beat?
it has the Nr 577 " thread sealant " . ( also called : the plumber's joy )
commonly, I do not trust this modern stuff, - but in this case I must say : it is working properly and it is fuel-tight.

:thumb
Canberra
>1300
>1300
Posts: 1309
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Contact:

Re: Decent Tank Taps

Post by Canberra »

Thanks Beat.

I found a couple of old original taps which were broken at lever. I notice the metal was distinctly better than what is being sold now as replacement parts and body was a lot thicker in section.

Does anyone know if they the same as used on Commandos with 1/4 NT threads in early 70s? I see later Commando taps had different part numbers

John
User avatar
kommando
>1400
>1400
Posts: 2015
Joined: Mon May 24, 2004 8:41 pm
Location: Scotland

Re: Decent Tank Taps

Post by kommando »

Commando taps were always 1/4 BSP to match the tank, they varied in quality as did the Triumph ones before even the Chinese and Indians became involved. The last decent Triumph tap was one made by BAP of Italy but even then they are copied by India.

No idea if these are genuine

https://www.feked.com/1-4-x-1-4-b.a.p.- ... -main.html



As for breaking the taps I have done this but to try to prevent it I use a 1/2 Width nut as on the feked picture and a copper enclosed rubber O ring washer. With this washer you get a seal well before the tap is tight and it allows you to position the tap using the 1/2 width nut.

Image
User avatar
minetymenace
Gerry1
Gerry1
Posts: 7784
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Contact:

Re: Decent Tank Taps

Post by minetymenace »

What kommando said, dowty washers for ever.
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.
Canberra
>1300
>1300
Posts: 1309
Joined: Fri Sep 03, 2004 11:45 am
Location: Canberra, Australia
Contact:

Re: Decent Tank Taps

Post by Canberra »

Do the later taps (which appear to be more substantial) fit on a 3 gallon tank? Bearing in mind the taps on the larger tank is a bit close to the side covers.
User avatar
minetymenace
Gerry1
Gerry1
Posts: 7784
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Contact:

Re: Decent Tank Taps

Post by minetymenace »

Yes John, I'll take a piccy when I can....
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.
Post Reply