Author Topic: North Coast British Columbia A10 (1956 GF)  (Read 4477 times)

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
North Coast British Columbia A10 (1956 GF)
« on: 23.04. 2011 18:31 »
Greetings everyone,

First post, thanks to Erling for assistance rendered, helped make the trip through the registration process fairly painless.

This is my first A10, purchased from a friend on April 20th, 2011.
It's a basket case now but it had been a chopper when the friend purchased it a number of months ago.
He had found it in somebody's basement and bought it, for next to nothing, with an eye to bringing it back as a chopper/bobber of some sort.
Unfortunately, he didn't get any boxes containing the BSA parts that had been removed in the original chopper building process.
After the main lump was removed (CA10 11xxx), the rolling chassis was dismantled and all the parts went into a 4'x4'x3' box. I'm pretty sure that was the last time my friend looked at what was in the box as he was unsure whether the frame was solid, plunger, or swinging, when I asked him about it he said that he thought it was rigid. He also didn't think he had gotten a carb with it (there were two).
His main focus was on the engine, which was seized up. Turned out to be just the rings rusted to the barrel, came free fairly easily and damage looks minimal.

I had last talked to him a couple of months ago, he still seemed enthused about the project then, just a little unsure about which chopper/bobber style he was going for. In hindsight I think he realized that something closer to stock would be the proper thing to do, and that he couldn't really justify another reasonably stock British bike. He already has a very nice 1972 Commando, looks original but has a few mods/improvements like oil pressure gauge, mikuni single carb, etc. It's a beauty and he rides it regularly through our riding season here.

About ten days ago I was in the process of cleaning out my basement, getting rid of an accumulation of old used small block Chevy parts. I was giving it all to the same friends son, he's about 25 years old, work's as a marine engine mechanic, grease on his hands night and day. He'll be able to make some use of all this "stuff" I had hoarded over the years. As we were chatting, I asked how his dad was coming along with the BSA, totally caught me by surprise to hear he was selling it!
I wasn't really interested (no, not really), both my already owned BSA's are still projects, did I really want another one?

Of course I had to take a look, find out why he was selling it etc., didn't want to be kicking myself later for not at least finding out what it was. My friend was pleased to hear that I was interested, he wanted to know that the bike was going to be brought back to life and he knew that I could/would be able to do that.
The main lump was all nicely laid out on the bench, he showed me the cylinders, a couple of broken fins and fairly minimal damage from the rings seizure, looked like it may come up fine with just a honing. I was pleased to see that the head was alloy and looked to be in excellent shape, hadn't expected the alloy based on the engine number. The chassis parts were still in the 4X4 box but it was on a shelving unit about ten feet in the air, this was at his workplace. He had propped an extension ladder up against it so that I could climb up and take a look at what was inside.
First thing I saw was the frame, which had the swinging arm and shocks attached. It had been painted a psychedelic paisley/tie-dyed green, I could see that somebody had put a lot of work into it as it had been completely smoothed out and corners blended with bondo. At least it appeared to be a complete A10 frame, un-butchered except for the paint and bondo. There was a horrendous looking set of handlebars in the mix, shaped like a couple of Z's. No sign of a gas or oil tank, no proper seat either.
I told my friend that I was a little more interested now and asked if he could give me a day to think about it.
It didn't take long, I called him that evening, we agreed on a price and arranged for me to pick it up a couple of days later (two day's ago).
It's still in the back of my truck (canopy) as I need to free up a  bit more room in my basement/workshop, hope to have it indoors before I go back to work next week.

I was curious about the head, brought it indoors to check it out a little further. The numbers between the intakes (remove-able inlet manifold) are 67-1106 J54 AM.

Looking forward to cleaning up the frame to find out what it's number is. I'll be sure to get a bunch of "before" photos before doing anything to it.

There really didn't seem to be any parts in the box that stood out as Golden Flash bits, that's what the engine would appear to be though, 1956 build?
My friend had also purchased some reference material, Haynes workshop manual, Service Bulletins, Parts book. Nice of him to throw them in as he had just paid good money for them.


Cheers,

John




1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline a10 gf

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Sep 2006
  • Posts: 3214
  • Karma: 57
  • West Coast, Norway & Alpes Maritimes, France
    • A10 GF
Re: North Coast British Columbia A10
« Reply #1 on: 23.04. 2011 19:24 »
Nice intro post, & welcome to the forum, am hoping you will enjoy the place.


Stand with
A10 GF '53 My A10 website
"Success only gets you a ticket to a much more difficult task"

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #2 on: 23.04. 2011 20:20 »
Thanks, I already enjoy it here!

Lot's of great bikes and even the young guys are adults, what's not to like?
1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 10976
  • Karma: 131
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: North Coast British Columbia A10
« Reply #3 on: 23.04. 2011 20:35 »
G'day John, welcome to the forum.
 The head is a '54 Road Rocket. Nice find, those heads usually sell for more than you probably paid for the whole lot.
http://atlanticgreen.com/a10dph.htm have a look there.
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #4 on: 24.04. 2011 00:12 »
G'day muskrat, it's a pleasure to be here!

I had stumbled upon that site a few days ago, after discovering the head was alloy. Even though I hadn't taken note of the casting number, I did recall seeing the separate manifold for the intake. My friend had already posted the engine for sale on the British Cycle Supply site, he had the engine serial number there as well so I was really expecting to see an iron head.

Are you sure the head is from a '54 Road Rocket? It looks to me, just based on the info at atlanticgreen.com, that it is a 1958/59 Super Rocket head. Does the J54 on the head indicate the year?

I'm the furthest thing from an expert, just started researching these bikes about a week ago! So much to learn.

Measured the valves, intake is 1.45", exhaust is 1.38". The intake ports measure .94".
1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline scotty

  • Resident Legend
  • *****
  • Join Date: Aug 2008
  • Posts: 561
  • Karma: 8
Re: North Coast British Columbia A10
« Reply #5 on: 24.04. 2011 04:01 »
Eh john

welcome to the forum.

lots of good advice from the members here.

I can't wait to see a paisley tie died themed a10 frame...pls post some pics when time allows

Where are you on the N coast ?

I'm down on the south coast here in squamish but i sail up the N coast a lot during the year.

Good luck with the build

cheers

scotty

Scotty

Current liabilities:
'56 A10 Dark Flash
‘74 Berlin Bomber R75-6

Offline muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 10976
  • Karma: 131
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: North Coast British Columbia A10
« Reply #6 on: 24.04. 2011 04:25 »
G'day John,
               yours is a '54-'55, from then on all were cast manifold. On that site he says his had '58-'59 valves not that it was a '58-'59 head. Notice the valve retainers are different, they are the SR type.
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #7 on: 24.04. 2011 04:35 »
Hi Scotty,

I'm in Prince Rupert, pretty good chance you'll be stopping in here sometime soon.

Hopefully get some pictures in the next couple of days, make sure you're prepared for a flashback though.

Maybe we'll get a chance to shoot the breeze in person this summer.

Cheers

John

1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #8 on: 24.04. 2011 05:56 »
G'day Muskrat,

Think I'm starting to get it sorted out.
There's more information at http://www.beezanet.com/twincarb/default.htm

1954 or 1955 Road Rocket alloy head it is.

Cheers

John




 
1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline trevinoz

  • Newcastle, N.S.W. Australia.
  • Wise & Enlightened
  • *
  • Join Date: Jul 2006
  • Posts: 3220
  • Karma: 71
Re: North Coast British Columbia A10
« Reply #9 on: 24.04. 2011 06:10 »
John,
             It is DEFINITELY a 1954/5 Road Rocket head.
The "J54" is the date code.
They can be found with different codes or with no date at all, which are probably the later made ones for the "speed kit".

   Trev.

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #10 on: 24.04. 2011 16:08 »
Greetings Trev,

So it seems that the engine is from a 1956 Golden Flash, with a 1954 Road Rocket alloy head added at a later date.

There were two carbs in the box, a 930 and a Monobloc. The Monobloc still had the throttle and cable attached.


Cheers

John
1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline trevinoz

  • Newcastle, N.S.W. Australia.
  • Wise & Enlightened
  • *
  • Join Date: Jul 2006
  • Posts: 3220
  • Karma: 71
Re: North Coast British Columbia A10
« Reply #11 on: 24.04. 2011 21:51 »
G'day John,
                   The number on the flange of the Monobloc will identify it.
Similarly the number on the side of the Concentric.
Original Flash carby is 376/1.
   Trev.

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #12 on: 24.04. 2011 23:39 »
G'day Trevor,

The number on the flange of the Monobloc is 389/81.

A little digging at www.amalcarb.co.uk shows it to match a 1962 U.S.A. Rocket Gold Star. That shouldn't really be much of a problem.

It's not all coming up roses though, photos of what's left of the bike are next.

Cheers

John
1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #13 on: 24.04. 2011 23:44 »
For your viewing pleasure...


1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident

Offline Two Alpha

  • Moving Up
  • **
  • Join Date: Apr 2011
  • Posts: 27
  • Karma: 0
  • Prince Rupert B.C. Canada
Re: North Coast British Columbia A10
« Reply #14 on: 25.04. 2011 00:25 »
I'm much more impressed with the engine than I am with the rest of it.

Frame looks like it used to be A7/A10. No passenger footrest loops?

Top yoke looks like it is Road Rocket, don't recognize the sliding tubes though.

Exhaust pipes look usable.

Levers and grips/throttle may be usable.

Does anybody recognize the swingarm as A10?

Looks like a long road back to respectable.

Cheers

John


1956 A10 Golden Flash
1961 G80CS
1968 A65LA Lightning
1968 A50 Royal Star
1968 TR6R Trophy
1972 T120R Bonneville
1973 TR7RV Tiger
1975 T160 Trident