Author Topic: Can anyone identify this tank?  (Read 227 times)

Online Minto

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Can anyone identify this tank?
« on: 24.05. 2021 18:08 »
When I bought this A10, I was unaware of the amount of odd bits on it, which doesn't bother me in the least but I certainly wouldn't have paid as much as I did for it had I known what I know now.
I'm not sure what the tank is off, I thought maybe an A7, but maybe not. Anyone want to chuck a suggestion in. Also, the front brake isn't as any other A10 that I've seen, it doesn't have the torque arm and looks smaller than others. Do both of these brakes fit the same fork legs or are they wrong too?
Here's an old picture before I changed the tank for a shiny one from Delhi.
52 A10 plunger
Aprilia RSVR

Online Greybeard

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Re: Can anyone identify this tank?
« Reply #1 on: 24.05. 2021 21:09 »
The front wheel of my 55 Plungie for comparison

Offline muskrat

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Re: Can anyone identify this tank?
« Reply #2 on: 24.05. 2021 21:31 »
G'day Minto.
Both look A7 to me. The A10 had the bigger tank and 8" front brake.
Click the link below "Muskys Plunger A7"
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online trevinoz

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Re: Can anyone identify this tank?
« Reply #3 on: 24.05. 2021 23:07 »
It's a bit hard to see, but do the taps mount at a backward angle?
If so, it is a long stroke A7 tank.

Online Brian

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Re: Can anyone identify this tank?
« Reply #4 on: 25.05. 2021 03:38 »
A10's could have that shaped tank, there doesnt seem to be that many around though, I have only seen a couple. I had one on a A10 I built some years ago. The tank is identical to a A7 one except the screw holes that hold the badge on are different, they are positioned correctly for the A10 badge.

Offline Swarfcut

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Re: Can anyone identify this tank?
« Reply #5 on: 25.05. 2021 09:33 »
 Jase. Early tanks have no rubber mountings and the same basic pressings could be found throughout the BSA range, adapted and modified to suit specific model trims as noted previously. Tank bottoms also vary, depending on the tank capacity offered and the differing height between A7 and A10 Motors. A large capacity tank will always fit an A7, not always the other way round.

 Front brake types can be mixed and matched along with their corresponding fork legs, as the fork bushes and stanchion diameter remained the same throughout production. The brake anchor type, peg, slot or torque arm is the decider along with the yoke width which limits the choice on very early models. Frame head bearings are the same, so later fork assemblies fit early frames.

 Swarfy.

Online Minto

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Re: Can anyone identify this tank?
« Reply #6 on: 25.05. 2021 19:58 »
Thanks all, the tanks in the loft bubble wrapped in a box at the moment so trying to find better pictures of it. But from what I can see, the taps are angled back, and very near the rear of the tank. The rear mounts don't look like the usual A7 ones, though that's difficult to tell really. The tank has no cut out at the rear for the saddle either.
I would like to change the front brake at some point (as it truly is bloody useless)
But might not bother if it means new forks, etc.
So I'm thinking probably A7 long stroke tank then, thanks Trev, I would never have sussed that.
Regards
Jase
52 A10 plunger
Aprilia RSVR

Online Greybeard

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Re: Can anyone identify this tank?
« Reply #7 on: 25.05. 2021 22:55 »
... Iwould like to change the front brake at some point (as it truly is bloody useless)
The bigger version, like mine, is excellent, I've been told that it is better than the full-width brakes.

Online Minto

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Re: Can anyone identify this tank?
« Reply #8 on: 26.05. 2021 01:15 »
... Iwould like to change the front brake at some point (as it truly is bloody useless)
The bigger version, like mine is excellent, I've been told that it is better than the full-width brakes.

I was thinking of a pair of floating ceramic Brembo discs with 8 pot radially mounted calipers but not sure if my forks have the correct bolt hole placement.
52 A10 plunger
Aprilia RSVR

Online Black Sheep

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Re: Can anyone identify this tank?
« Reply #9 on: 26.05. 2021 06:19 »
Stoppies! *smile*
2 twins, 2 singles, lots of sheep