Author Topic: A7 Star Twin Rocker Box 1950/1952  (Read 328 times)

Offline Eduleite

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A7 Star Twin Rocker Box 1950/1952
« on: 07.06. 2015 00:42 »
Hello everybody,
Could anyone tell me if this rocker box is actually the  Star Twin?
Numbering, ZA7S4727 is 1950, right?
It seems to be the Triumph ...
Hugs,
A7 Star Twin 1950
A7 Star Twin 1952
Brazil

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #1 on: 07.06. 2015 01:04 »

 Longstroke engines have separate rocker boxes with screw in caps like that, but that's about as much as I know....best let those who know....what does the rest of the head look like...??
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline Eduleite

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #2 on: 07.06. 2015 01:45 »
One more pic.
And other engine.
Number AA7S1284.
A7 Star Twin 1950
A7 Star Twin 1952
Brazil

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #3 on: 07.06. 2015 03:34 »

 The top photo looks to my limited knowledge to be a Longstroke A7 ('46?-'50?), bottom photo later Shortstroke model('49->), and if that's the enigine# for it, then A7...I believe as per recent discussion, that the 'S' after 'A7' denotes Star Twin in both cases, as there was Long and Short stroke versions of the ST.

 Triumph had external pushrod tubes, so don't think there's one of them...
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline Tomcat

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #4 on: 07.06. 2015 06:08 »
G'day Eduleite, DuTuch got it in one. photo 1,2 and 3,long stroke XA7, YA7 and ZA7. Photo 4 & 5 short stroke AA7 or ZA10. And 'S' in the frame numbers means SPRING frame, 'R' rigid and just numbers is also rigid. Cheers TC
'48 A7 '59 SR '74 850 Commando TDM900

Offline kiwipom

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #5 on: 07.06. 2015 07:26 »
Hi guys good looking mechanics tool kit there,cheers
A10.G.Flash(cafe racer)Honda 250 vtr. Yamaha Virago XV920.

War! what is it good for?Absolutely nothing, Edwin Star.
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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #6 on: 07.06. 2015 08:42 »

 ..hope that doesn't mean I know more than I thought..could be a dangerous thang... *eek*

 
Quote
And 'S' in the frame numbers means SPRING frame
that's the frame-frame, not the engine-frame..... *conf*..but best we'll leave that alone...
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline Eduleite

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Re: A7 Star Twin Rocker Box 1950/1952
« Reply #7 on: 08.06. 2015 14:59 »
Thank you guys!
Besides my perfectionism, I believe that had many variations and in my country, the difficulty of finding parts for all these years ended up creating a lot of changes. I would like to rebuild a as original as possible. *smile*
A7 Star Twin 1950
A7 Star Twin 1952
Brazil