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RGS vs Super Rocket
#784670 09/18/19 11:55 am
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Can anyone tell me the difference between a Rocket Goldstar engine compared to a Super Rocket engine?


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
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Re: RGS vs Super Rocket
Spitfire Ken #784688 09/18/19 3:14 pm
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Ken, your message was NOT "printed all in caps."

Has your left hand gotten better?

Re: RGS vs Super Rocket
Irish Swede #784694 09/18/19 4:40 pm
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no I wish it had; on some days the hand is better than on others but not often. it is still difficult and I need to do back over it and add the necessary caps. it's very tedious.
I still didn't get any response to my question. perhaps all caps works better.


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
Re: RGS vs Super Rocket
Spitfire Ken #784695 09/18/19 4:49 pm
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Google gets you to the Wiki page which says

The later (1961-1963) 9:1 compression ratio Super Rocket engine was used with a 357 Spitfire camshaft and a 1 5/32" bore AMAL Monobloc carburettor which gave 46 bhp (34 kW) as standard.

https://en.wikipedia.org/wiki/BSA_Rocket_Gold_Star

Not an awful lot, it was a style over substance model and a copy of what the Ton-up boys were doing,

Re: RGS vs Super Rocket
Spitfire Ken #784698 09/18/19 5:49 pm
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Ken
I believe the engines were exactly the same as the Wikipedia data says. Also there wasn't a change in the RGS serial number identifying it as as anything different than a '62 A10.
Only the BSA records can identify the bike as an RGS as it left the factory.
The frame on that one year I believe was different in that it has stronger cast lugs top and bottom on the front motor mounts. This makes it easier to clone a RGS from a '62 Super Rocket.
Sam

Re: RGS vs Super Rocket
Spitfire Ken #784713 09/18/19 7:55 pm
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Hi All,
The history I have read suggests the RGS engines were taken from the normal SR production line
4 cast lugs on the down tubes does not an RGS make !!!!!
Some replacement frames and other export order frames could incorporate the 4 cast lugs

John

Re: RGS vs Super Rocket
chaterlea25 #784721 09/18/19 9:47 pm
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Originally Posted by chaterlea25
Hi All,
The history I have read suggests the RGS engines were taken from the normal SR production line
4 cast lugs on the down tubes does not an RGS make !!!!!
Some replacement frames and other export order frames could incorporate the 4 cast lugs

John



I was going to say something similar. I know of a 4 lug frame which also doesn’t have the side car lug within the left rear passenger footrest loop. Still not an RGS frame though.


beerchug

(Display name changed for cyber security reasons)

Re: RGS vs Super Rocket
Samsmc1 #784786 09/19/19 3:25 pm
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Originally Posted by Samsmc1

there wasn't a change in the RGS serial number identifying it as as anything different than a '62 A10.
Only the BSA records can identify the bike as an RGS as it left the factory.
The frame on that one year I believe was different in that it has stronger cast lugs top and bottom on the front motor mounts. This makes it easier to clone a RGS from a '62 Super Rocket.
Sam




AFAIK, the new lug arrangement was a change on all the twin and big singles from '62 on. The RGS frames were stamped A10 while all other A7/A10 models were stamped A7. All the BSA engines were assembled down a separate assembly line and stamped when finished. When a RGS chassie was in need of an engine a Super Rocket engine was randomly grabbed. Rocket Gold Stars were built for the '62 and '63 model years.


Bill B...


Boomer
Re: RGS vs Super Rocket
Spitfire Ken #784849 09/20/19 2:58 pm
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THANKS FOR THE FEEDBACK. SO IT SEEMS THAT OTHER THAN THEIR LIMITED NUMBERS, THE BETTER FRONT BRAKE, ALLOY RIMS AND SPORT FENDERS; WHAT WE HAVE IN THE RGS IS A TARTED UP OVER PRICED 1963 SUPER ROCKET PARTICULARLY IN THE CASE OF THE US SPEC. RGS.

I DON'T KNOW WHY BUT I STILL WANT ONE. ANYONE OUT THERE LOOKIN TO DOWNSIZE?


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
Re: RGS vs Super Rocket
Spitfire Ken #784850 09/20/19 3:01 pm
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Just do a replica, half the price and 100% of the performance plus the added benefit of not making a mistake and buying a fake.

Re: RGS vs Super Rocket
Spitfire Ken #784889 09/20/19 9:59 pm
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Hi Ken,
It is debatable whether the 190mm brake is as good as the 8in. single sided finned cast iron hub ?
A more affordable solution ?, but different from A10 SR fork bottom sliders are needed to fit the 8in. or 190mm

John

Re: RGS vs Super Rocket
chaterlea25 #784957 09/21/19 1:28 pm
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Thanks' I appreciate the thought. I usually check these thing out pretty well before spending that type of money. I'm pretty particular and I have not found a replica that is close enough. I do not want to build one myself. I would probably go overboard and in the end spend more than it would cost to buy a real one.


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
Re: RGS vs Super Rocket
chaterlea25 #784958 09/21/19 1:31 pm
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Thanks' I did not know that different A10 SR fork bottom sliders are required to fit the 8in. or 190mm. That's good information


I APOLOGIZE FOR THE USE OF CAPS. I CAN ONLY TYPE WITH MY RIGHT HAND SO USING THE SHIFT KEY IS BEYOND MY CAPABILITES.

The Devil is in the details.

1957 BSA A10 Spitfire Scrambler (numbers matching, very correct, very nice condition)
1965 BSA A65 Lightning Rocket "Clubman" (restored)
1966 BSA A65 Spitfire MK-II (restored)
1967 BSA A65 West Coast Hornet (under restoration)
1975 Norton Commando Roadster (2100 miles)
2001 Kawasaki W650
Re: RGS vs Super Rocket
Spitfire Ken #784990 09/21/19 8:14 pm
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Hi Ken,
The 8in. and 190mm wheel takes the LH screw in wheel spindle
This type of fork legs were used on quite a few different BSA models
If you can source the A65 legs that use the screw in spindle they have the two way rod dampers which is
an improvement over the earlier types

John

Re: RGS vs Super Rocket
Spitfire Ken #785018 09/22/19 12:07 am
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IMHO the 8" single sided brake is an excellent brake.
I had one fitted to a 1954 A7 Shooting Star when living in UK.
I went to the 1967 Isle of Man TT on it with a few friends.
Being younger than I am now (but perhaps just about as stupid!) we went around the circuit on our bikes on Mad Sunday going as fast as we could.
Going down the long straight to Creg-Ny-Ba I was neck and neck with a friend when he looked across and made the accepted sign to stop for a pint.
We pulled into the car park of the Creg-Ny-Ba Hotel braking at the last minute.
We went into the bar and were just starting to down our first pint when a guy rushed into the bar and shouted " Who owns the BSA Shooting Star?--it is on fire!"
I rushed outside and saw the what looked like smoke coming out of the front brake.
What had happened was that with all the heavy braking the brake had got so hot that it melted the grease in the front wheel bearings and it had found its way into the drum which was way too hot to touch!
Since then I have had a great deal of respect for that old BSA 8" single sided brake.
Sorry to bore you!
You can now return to the topic in hand!

Re: RGS vs Super Rocket
Spitfire Ken #785043 09/22/19 3:53 am
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The standard super rocket brake is much better if you fully float the shoes.


Moderated by  Allan G, Jon W. Whitley 

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