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Southern Cross AKB 3


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  #1  
Old 06-18-2016, 09:37:52 AM
JeffR JeffR is offline
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Default Southern Cross AKB 3

G'day to all,

New to the forum, had an interest in old engines for a fair while but have had bugger all experience with them.

I bought a couple of Southern Cross AKB 3s both missing original parts, fuel tank, water tank, exhaust, carburettors. Does anyone have any advice on where to source parts for these engines?

One turns over and has good compression and the other moves about an inch either way so hopefully I can get it unstuck. Any advice on freeing up an engine?

Just wanted something small and relatively easy to restore before I jumped into the deep end.

Any info would be greatly appreciated.

Jeff.
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  #2  
Old 06-18-2016, 09:39:45 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Photos of other engine.
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  #3  
Old 06-18-2016, 10:04:15 AM
Paul Richardson Paul Richardson is offline
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Default Re: Southern Cross AKB 3

Welcome Jeff,..that looks like a nice little project,thanks for posting.
It's the first of that type I have seen.Someone hire will know a little more about them I'm sure.Just go easy pulling things to bits,but I suppose you know that much already?
I hope you post a pic or two of your progress?
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  #4  
Old 06-18-2016, 06:17:15 PM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Hello Jeff
Congratulations are in order. You have selected a nice little engine to start with. I'm fairly biased towards Southern Cross.
The AKB is a little engine that has some 'unusual' characteristics. I love them
Ian, 'rustyengines', will more then likely contribute something here. He has the Southern cross registry and is a top bloke. And he's not far away from you.

If the tags are missing, the engine number will be on the cam shaft end. Dating is easy if you can find the numbers. Simply look at the registry (which Ian has built) and look down the pages to fit your number into existing ones.
http://southerncrossregister.nqmp.or...es-akb-bgc/akb

Your quite lucky in having the original style magneto on both engines. I'm envious of you for getting those on your little engines.
I would not be surprised if they both work when serviced and possibly (more like probably) a new condenser placed inside.

As for parts, for a carbi there is a bloke in Toowoomba who has stuff on ebay all the time. Collectaholic or something or try Rob S here. Both are good to deal with.
For tanks try John the Tank man here as originals would be hard to find, or try making the tanks yourself if you can solder. The hopper and fuel tank are basically boxes. If need, I can help with sizes.
The mufflers are farmpumper style mufflers but I'm sure nobody would notice if another style was used. They're a bit noisy with the original and I screw another one on when I run it at home to make it a bit quieter.
Here are a few pictures and a video of our little AKB I got going late last year. I have to remake the video one day. I have the wrong title on it. Stupid, stupid, stupid me.

So if there are any questions simply ask away. The only stupid question is the one you don't ask.

Cheers Scott
PS: Both the cooling tank and fuel tank were homemade for this engine. I also made the top for the carbi.









---------- Post added at 08:17:15 AM ---------- Previous post was at 08:14:09 AM ----------

Hello. Me again
With your first engine, I would hesitate in using the carbi on it. It must have worked at some stage, so use it until an original pops up. Things have a way of popping up when your not looking for them or don't need them urgently.
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Old 06-18-2016, 08:54:13 PM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Quote:
Originally Posted by Paul Richardson View Post
Welcome Jeff,..that looks like a nice little project,thanks for posting.
It's the first of that type I have seen.Someone hire will know a little more about them I'm sure.Just go easy pulling things to bits,but I suppose you know that much already?
I hope you post a pic or two of your progress?
Thanks Paul, definitely will be taking it steady on these. I will take photos as I go along.
Cheers
Jeff

---------- Post added at 10:54:13 AM ---------- Previous post was at 10:22:57 AM ----------

Scott,
Many thanks for the heads up, prior to buying the engines I did some research on them and came across the video and pictures of your AKB. Pretty good resto there.
Apparently the yellow engine did run with the non-original carby on it. This engine has no ID plate on it and I can't see the Serial No. on the camshaft as it is a bit corroded and has the belt pulley making access hard. The crankshaft end I can see the first three numerals 154, unsure of fourth numeral and the fifth numeral looks to be a 3.
The green engine has the ID plate with Serial No. 9868, confirmed on both the crankshaft and camshaft ends. Have completed the rego form for the SC Register and Ian has informed me that it was made in 1941.
I'll definitely be asking for advice when the time comes.
Appreciate the informative response.
Regards.
Jeff.
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  #6  
Old 06-18-2016, 09:26:18 PM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Quote:
Originally Posted by JeffR View Post
Apparently the yellow engine did run with the non-original carby on it. This engine has no ID plate on it and I can't see the Serial No. on the camshaft as it is a bit corroded and has the belt pulley making access hard. The crankshaft end I can see the first three numerals 154, unsure of fourth numeral and the fifth numeral looks to be a 3.
Regards.
Jeff.
Hello again Jeff
I would not mind betting your second engine is 1943.

The carbi on your yellow engine seems like a Briggs and Stratton carbi. I may be wrong and, hopefully, someone will confirm or deny this.
Does your yellow engine have the crank handle engaging dog on it? Or has it been taken off to fit the pulley?

With the seized one I'd take the head off to have a bo-peep to see how bad she is and fill her up with auto transmission oil or some other thin oil. By the time you get to 'doing her up' some thing may have soaked oil in to help things along.
See if the valves are stuck while the head is off.
Be careful when you take the head off as there is a good chance you'll be able to re-use the head gasket.

Cheers Scott
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  #7  
Old 06-18-2016, 11:25:44 PM
john gilbert john gilbert is offline
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Default Re: Southern Cross AKB 3

Hi Jeff and Others, congratulations to Scotty2, that tank you made looks pretty cool to me. I have emailed to Jeff direct and will try to add the pics here, showing the base with the hold down bolts in place etc. cheers John
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  #8  
Old 06-19-2016, 02:02:57 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Scott,
Not sure about the carby will have a closer look tomorrow.

The only thing I can see on the crankshaft outside of the flywheel is the head of the gib key. The belt pulley keyway and the camshaft keyway aren't lined up perfectly and I can't see a key in there, although it needs a clean up to get rid of the dirt , grease etc. off the engine. I'll tackle this in the coming week.

Any chance of a photo of the crank handle engaging dog? Also is the carby on your AKB original and if so could you take a close up of the carby as well so I can ID one.

The one i have on the green engine is missing the fuel bowl?? looks to have broken off, and has also broken between the mount and body.

Kind Regards
Jeff.
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  #9  
Old 06-19-2016, 02:47:57 AM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Hello Jeff
I hope these help.

Gees I wish I could make a tank as neat as yours John. A true credit to your trade you are.
Cheers Scott
PS: I have to remember not to do woodwork in that shed. Dust gets everywhere and as soon as you pull a dust cover off, the crap goes everywhere.
And I have to do that lock nut up on the throttle linkage. The things you see in pictures







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  #10  
Old 06-19-2016, 03:50:53 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Scott,

Thanks for the prompt reply, Definitely no crank handle engaging dog on either engine.

Your carby seems to be made from a different metal to mine is it the original carby?

Regards
Jeff.
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  #11  
Old 06-19-2016, 06:08:25 AM
Rusty Engines Rusty Engines is offline
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Default Re: Southern Cross AKB 3

There are 2 carburetors the early engines a cast iron carby later changed to crap metal "die-cast" and they fell apart that's why you find a number of different carburetors on the AKB and AXC
Ian
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  #12  
Old 06-19-2016, 08:20:31 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Ian,

Are the carbies on the AKB and AXC interchangeable?

Jeff
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  #13  
Old 06-19-2016, 05:25:51 PM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Quote:
Originally Posted by JeffR View Post
Ian,

Are the carbies on the AKB and AXC interchangeable?

Jeff
Hello Jeff.
Good question.
The carbi on the AKB pictured is cast iron and it had a sort of alloy top that corroded easy hence...the brass cover
Our AXC has an alloy carbi. Would it fit the AKB? I'll have to go an measure to see if it's possible to start with. The cover on our AXC was also missing so a steel one was made. It was a real pain as the float pivot is cast into the lid and the needle and seat is also there in it.
Cheers Scott





---------- Post added at 07:25:51 AM ---------- Previous post was at 07:23:20 AM ----------

I should also mention that the AKB and the AXC are quite different engines. The specifications may lead people to think the AXC is simply an air cooled version of the AKB, but the AXC is an entirely different engine.
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Old 06-20-2016, 04:10:51 AM
Rusty Engines Rusty Engines is offline
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Default Re: Southern Cross AKB 3

"AKB and the AXC are quite different engines"
Hi Scott the AXC is an improved version of the AKB and air cooled
Do you have a AXC manual ? is so you will see all the parts that are the same
About 45 parts are the same
And the big one the general layout
Ian
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Old 06-20-2016, 08:16:42 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

Scott,

That's a nice looking AKC there, how does she run? Do you have any videos of it running?

You mentioned that you made the cover for your AKB carby as well, did you have the same dramas with the float pivot etc..?

Also is there any chance of getting the water and fuel tank dimensions off you, wouldn't mind having a go at making my own, have access to the sheeties workshop at work which will be a big help with advice etc.
Regards
Jeff.
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Old 06-20-2016, 04:49:44 PM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Hello Jeff,
I measured the flanges of the carbi's on both and they seem to be very close in size (I did not take them off and things get in the way when I poked dividers down there to measure) so it may be possible to 'mix and match' the carbi's. Throttle linkage would not be a problem.

No sorry, no video of the AXC but I may be able to make one over the week-end as it's now towards the front of the shed.
The carbi cover for the AKB is simply a bit of brass sheet. On the AKB carbi the needle and seat is in the base, so easy as pie to make. I made it so it swivels around so I can see inside the carbi and so I can pour a little bit of fuel into the carbi so I can start her every now again. It makes it easy to check the float height too.

I'll get some dimensions of the tanks when I go up to the shed. The biggest problem are the tank fittings. A spout and cap and an outlet.

Thanks for the information Ian. I have never looked at the parts lists noting numbers on them but I would have assumed some parts were interchangeable.

I like these two little engines as we only have 3 Southern Cross petrol engines. These two and a mower. It' a change from the usual Southern Cross diesels you always see. (I like them too ) Why does that emicon thingo look like me? Fat, bald and bearded. I never notice that before.

Cheers Scott
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Old 06-21-2016, 07:11:54 AM
JeffR JeffR is offline
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Default Re: Southern Cross AKB 3

G'day Scott,
Appreciate you doing all of this for me, you've been pretty helpful.

Started pulling down the engine that is stuck, water has gotten into the head via the sparkplug. Internals look pretty good, some surface rust that wipes off with your finger on most parts, also a fair bit of gunk in there as well.
Photos on the way.
Regards
Jeff.
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Old 06-21-2016, 08:31:10 AM
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Default Re: Southern Cross AKB 3

AKB 3 Serial No. 9868
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Old 06-21-2016, 08:33:19 AM
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Default

AKB 3 Serial No.
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Old 06-28-2016, 03:10:56 AM
Scotty 2 Scotty 2 is offline
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Default Re: Southern Cross AKB 3

Quote:
Originally Posted by JeffR View Post
Scott,

That AKC there, how does she run? Do you have any videos of it running?
Regards
Jeff.
Hello Jeff
I do now. It's been horrible weather to get engines out to do a video but today was different. It was cold (10 degrees C) but fine.

The sizes for the AKB tanks. They may not be exactly what Southern Cross made but that's what I made up for the old girl.
Fuel tank: 8 3/4" wide by 8 3/4" long by 3 1/4" high
Cooling tan: 8 3/4" wide by 5 1/2 deep by 14 1/2" high.

I made the little spacers as John as shown to suit after I mounted the cooling tank. I just made them so the top of the fuel tank sat pretty well in line with the top of the cooling tank.

Cheers Scott

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