Tap Plungers

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pauldridge
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Re: Tap Plungers

Postby pauldridge » Tue Mar 05, 2019 4:50 pm

FYI, a company in the US, Baxter Cycles, manufactures these plungers in brass, with o rings.. just $20 US:

https://www.baxtercycle.com/product/push_pull_petcock_plunger_insert/

Photo: https://www.baxtercycle.com/wp-content/uploads/2017/09/ALW_PETCOCK_PLUNGER_KIT.jpg
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simon.holyfield
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Re: Tap Plungers

Postby simon.holyfield » Tue Mar 05, 2019 5:07 pm

Thanks Phil, I've not seen that before.
cheers

Simes

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pauldridge
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Re: Tap Plungers

Postby pauldridge » Tue Mar 05, 2019 5:32 pm

I just wasted my money on a set of new plungers with cork seals from another source. One of the corks was so tight I had to use a pair of pliers to actuate. In spite of that, just a month or so later, I am already getting a bit of seepage from the plunger. I just ordered the o-ring set myself, on advice from a noted Ariel engine rebuilder here in the US who had favorable experience, so we'll see how that goes!
Phil Auldridge Austin, Texas - USA
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paul.jameson
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Re: Tap Plungers

Postby paul.jameson » Tue Mar 05, 2019 8:44 pm

When re-furbishing petrol taps it is quite common to find that the tap body has worn quite badly. I have often had to ream the body out so as to make a hole of consistent diameter for the corks to run in. Do bear this in mind when deciding how to re-furbish your tap.
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simon.holyfield
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Re: Tap Plungers

Postby simon.holyfield » Tue Mar 05, 2019 9:11 pm

paul.jameson wrote:When re-furbishing petrol taps it is quite common to find that the tap body has worn quite badly. I have often had to ream the body out so as to make a hole of consistent diameter for the corks to run in. Do bear this in mind when deciding how to re-furbish your tap.


Thanks Paul, I have seen that too. I've not attempted to fix it yet but I'll find a suitable reamer before I make any plungers. I've at least two to do.
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
http://ariel-square-four.blogspot.com

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simon.holyfield
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Re: Tap Plungers

Postby simon.holyfield » Sat Mar 09, 2019 8:32 pm

Folks,

Does anyone know the history behind these taps? I've had a quick Google and haven't found much.

Prewar, taps appear to be adjustable and have larger (3/4") hex or diamond knurled plungers; at some point post war, the plungers get a lot smaller and the adjustability disappears. I have a lot of non adjustable plungers which have a straight knurled knob of around 1/2".
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
http://ariel-square-four.blogspot.com

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alan.moore
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Re: Tap Plungers

Postby alan.moore » Sat Mar 09, 2019 11:54 pm

Simon
This page on the VOC website suggests the change was late forties

https://www.voc.uk.com/net/docs/tl/petroltapt28.pdf

Cheers
Alan
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simon.holyfield
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Re: Tap Plungers

Postby simon.holyfield » Sun Mar 10, 2019 2:48 am

Perfect, thank you Alan!
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
http://ariel-square-four.blogspot.com

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charles.bulloch
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Re: Tap Plungers

Postby charles.bulloch » Mon Mar 11, 2019 12:36 pm

Hi, all.

Has anyone tried the Baxtercycles neoprene o rings?

C

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simon.holyfield
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Re: Tap Plungers

Postby simon.holyfield » Wed Mar 20, 2019 10:30 pm

Today I am learning how easy it is to break tiny slot drills...
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
http://ariel-square-four.blogspot.com


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