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[Debreeze]

Thanks for haveing me. Just picked up 1951 a7 golden flash plunger, not ran in 30 ish years so a lot to learn, had a bantam in 1974 when i was 14  and a few triumphs in the 80's. Currently have a bonniville 2001 a crf 250x and a honda 70

[RichardL]

Welcome to the forum. 

With regard to a lot to learn, we all started there. As a '51 A7, it wouldn't be a "Golden Flash," but, possibly, a "Star Twin" or just "A7." No matter, looking forward to seeing a lot of pictures of getting her up to running condition. If you think the engine is good right now, that's great, but you should probably take it apart to inspect the whole thing and, very importantly, clean the sludge trap (lots here on that when you use the search tool). If you do that, it may stay good.

Richard L.

[a10 gf]

& welcome aboard!  You'll find all needed help to get it on the road.
Looking forward to pictures.

[CheeserBeezer]

Great to have you aboard! There's lots of help on this forum. I can guarantee that any (A7 / A10) problems you have will be solved here! Maybe post some pictures with engine and frame numbers and we can tell you exactly what you've got.

[Greybeard]

Welcome 👍

RichardL, I'll see your 'Sludge Trap' and raise you a 'Timing Side Bush'.

There are videos about this on YouTube.

[muskrat]

G'day Debreeze  fellow 51 A7 luver.
I've had mine for over 40 years.
51 was the start of the "short stroke" A7's, you'll love her.
Cheers

[Greybeard]

I can guarantee that any (A7 / A10) problems you have will be solved here!

The only problem we cannot help you with is paying the bills 💷💷💷

[Swarfcut]

 Hi DB.   I reckon a time seized Oil Pump  and a blocked pick up pipe trumps just about everything else mechanically. Then considering the magneto.......

 Swarfy

[Greybeard]

So, DB, have we scared you enough yet? 

[Rocket Racer]

Thanks for haveing me. Just picked up 1951 a7 golden flash plunger, not ran in 30 ish years so a lot to learn, had a bantam in 1974 when i was 14  and a few triumphs in the 80's. Currently have a bonniville 2001 a crf 250x and a honda 70

Great to have you on the site, we love photo's!
Don't listen to all these gloom and doom merchants. These bikes are over 70 years old so one that's been off the road does need a good going over, (yes always worth flushing the sludge trap on any BSA or trumpet twin ). But they are simple bikes and if put together with a bit of care are amazingly robust. While I don't presently have a 500 on the road, I've ridden a mates star twin and that is such a sweetie, smooth as. No wonder these bikes earnt the Maudes trophy (worth reading about) for their ISDT exploits. My experience is mainly with the 650's but am building a 500 racer, thats how much faith I have in these motors.
Don't hesitate to ask, don't believe everything you hear, but on the whole you'll get useful support and direction.
Tim

[Greybeard]

This is a blocked sludge trap, (on another model of motorcycle) . Oil is supposed to pass through here on the way to the big ends 🤪