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dade
United Kingdom
503 Posts |
 Posted - 24/01/2020 : 10:51:36
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Recently I had the good fortune to track down an original Dog Bone petrol cap for my P type after a trial fit it was obvious that the internal spring was not strong enough and the cap was a very loose fit.
I asked the question on the Forum "Has any one repaired a Dog Bone cap"? without success, so I contacted Vintage MG Parts knowing that they supplied kits of internal components for these caps, Richard Hardy confirmed by email that his components would probably fit my cap and for a small fee he would fit them for me, bearing in mind that a jig and an adapted press is required to fit the inner spun brass spring retainer.
I arranged the re chroming of the cap and Richard fitted the new internals. My original worn and tatty cap now looks as new and fits tightly.
The reason that I make this posting is to draw members attention to the fact that these components are available and can be utilised to fit original Dog Bone caps, as I suspect that there must be plenty of 80 year old Dog Bones that have weak springs and do not fit tightly.
Please note that I have no connection with Vintage MG Parts other than being a satisfied customer.
Russ
PB0333
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DickMorbey
United Kingdom
3672 Posts |
Posted - 24/01/2020 : 10:58:09
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Hello Russ, glad to hear that there was a happy ending to this story!
Dick Morbey
PA-PB 0743
Frieth, Oxon, UK |
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Simon Johnston
United Kingdom
6011 Posts |
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coracle
United Kingdom
1888 Posts |
Posted - 24/01/2020 : 13:52:13
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I have just been looking at the narrative within the VMGP web page: http://www.vintagemgparts.com/dog_bone_filler_caps_-_early.html and I am a little confused.
The dogbone on the left of my picture, which I believe to be an original, is as is described as the original MG design. The one on the right, I know to be a reproduction, but is very like the original one shown at the top this thread.
Were both designs original but the stepped one is an early version and the flat topped later?
P.S. I thought PB's had a completely different design that swings open rather than twists off. I think Andy King once did them. |
Edited by - coracle on 24/01/2020 13:59:14 |
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mgmog
United Kingdom
463 Posts |
Posted - 24/01/2020 : 14:23:53
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factory pic.
I also thought stepped was original.
Rich Stott
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Simon Johnston
United Kingdom
6011 Posts |
Posted - 24/01/2020 : 14:31:14
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Non factory pic 
Stepped design.
Simon J
J3437 |
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coracle
United Kingdom
1888 Posts |
Posted - 24/01/2020 : 17:09:57
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A PB filler cap. |
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Richard Hardy
United Kingdom
2143 Posts |
Posted - 24/01/2020 : 18:44:16
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Thanks Russ for the nice feedback, appreciated
The early J and PA filler caps were the stepped type. There were of course other companies making caps but not the stepped type. The stepped type was a two part body, part metal spun, part casting, the non-step was a one piece casting.It may be that the factory switched to a more simpler and cheaper cap for the late production run P and N types etc..
The one piece cap is the easy one to reproduce. The stepped one is labour intensive to get right.
The PB had the octagonal lever type cap which attached to the neck via a bayonet fitting
On the stepped ones, I incorporate a loop eye at the base of the smaller brass cone so enthusiasts have the option to attach a chain and t-bar to prevent the cap from popping off. The new caps will not pop off on their own, only if the neck bayonet o the tank is not as crisp as it once was.
Rich
Vintage MG Parts |
Edited by - Richard Hardy on 24/01/2020 18:53:14 |
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Simon Johnston
United Kingdom
6011 Posts |
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Richard Hardy
United Kingdom
2143 Posts |
Posted - 24/01/2020 : 21:53:22
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Ok Simon, J and early P, possibly to include late PA may be more accurate grammar
Rich
Vintage MG Parts |
Edited by - Richard Hardy on 24/01/2020 21:54:13 |
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Simon Johnston
United Kingdom
6011 Posts |
Posted - 24/01/2020 : 22:05:46
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This picture of a seemingly very original PA (which I think is PA1964 out of 2250 so near the last of the PAs) clearly shows an unstepped cap
Simon J
J3437 |
Edited by - Simon Johnston on 24/01/2020 22:06:25 |
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Colin McLachlan
United Kingdom
988 Posts |
Posted - 25/01/2020 : 14:03:37
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My PA 0613 has an unstepped cap, and one owner family from 1937 till me, so a good chance it is original.
Colin
Crail, Fife.
PA 0613
MG3242
Register No. 2591 |
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