The Bucket Foundry

[husaberg]

Nice little video Green sand used as inner solid cores as well.
When I seen the signature of the poster I wondered if they were rocket parts.

[F5 Dave]

A mate showed me his OEM hip joint. His take was after seeing several surgeons, was that you can either do the incision from the side or the rear. The rear carries more risk that you will walk with a limp, but is less likely to dislocate. This is about the sum total of my knowledge. Hope it gets sorted for you.

[Flettner]

Thank you all for your encouragment, I guess I just freaked out a bit but I'm ok now.
Heat Ranger crankshaft being put together.

[Flettner]

More pictures of crank assembly plus the sleeve engine crank together.

[Flettner]

Sleeve engine, still no piston yet, next on the list.

[husaberg]

Sleeve engine, still no piston yet, next on the list.

Speaking of the sleeve Valve
Last time I was talking to Neil
I mentioned these. 54mm
Short skirts and high pin location
Attachment 311310
288 Husky
Attachment 311311
Stil 066
Attachment 311312
Dolmar 6401-7900

[Flettner]

Speaking of the sleeve Valve
Last time I was talking to Neil
I mentioned these. 54mm
Short skirts and high pin location
Attachment 311310
288 Husky
Attachment 311311
Stil 066
Attachment 311312
Dolmar 6401-7900

Thank you, fine choice, but I need a piston with skirt all the way round as I have exhaust ports all the way round and they are not allowd to talk to each other. No, it will have to be a special.

[husaberg]

Thank you, fine choice, but I need a piston with skirt all the way round as I have exhaust ports all the way round and they are not allowd to talk to each other. No, it will have to be a special.

You just want to make your own I am on to you.

Closer

Pictures of Husqvarna 390 chainsaw piston assembly 55mm 537 42 02-02 NEW
I can't find a pic but the Victar 125 was that size not sure if it had windows in it like the 160cc did.
If only there was a guy on this thread who made pistons for a living...........

[ken seeber]

[QUOTE If only there was a guy on this thread who made pistons for a living...........[/QUOTE]

Gotcha Husa !! Dunno about for a living though.

What would be the bore size, compression height and pin diameter?

Dunno if we can help directly, but have a good handle on other sources. We are the Meteor distributor and they make a huge range: bikes, karts, agricultural, forestry etc.

Half buggered hip or not Neil, you are still putting out....great to see.

"According to the latest scientific data, on average, a European man will have sex two to three times a week, whereas a Japanese man will have sex only one or two times a year.

This is upsetting news to most of my friends, as they had no idea they were Japanese."

[husaberg]

Gotcha Husa !! Dunno about for a living though.

What would be the bore size, compression height and pin diameter?

Dunno if we can help directly, but have a good handle on other sources. We are the Meteor distributor and they make a huge range: bikes, karts, agricultural, forestry etc.

Half buggered hip or not Neil, you are still putting out....great to see.

"According to the latest scientific data, on average, a European man will have sex two to three times a week, whereas a Japanese man will have sex only one or two times a year.

This is upsetting news to most of my friends, as they had no idea they were Japanese."

54mm high pin the rest I have no idea I am picking Neil will know.
While we are on the subject of pistons.
How do you insert the pins for the rings Ken.

[Flettner]

[QUOTE If only there was a guy on this thread who made pistons for a living...........

Gotcha Husa !! Dunno about for a living though.

What would be the bore size, compression height and pin diameter?

Dunno if we can help directly, but have a good handle on other sources. We are the Meteor distributor and they make a huge range: bikes, karts, agricultural, forestry etc.

Half buggered hip or not Neil, you are still putting out....great to see.

"According to the latest scientific data, on average, a European man will have sex two to three times a week, whereas a Japanese man will have sex only one or two times a year.

This is upsetting news to most of my friends, as they had no idea they were Japanese."[/QUOTE]

LM6 ?

[husaberg]

I found this interesting
http://www.metalstop.com/technical/technical.shtml
http://www.metalstop.com/index.shtml
Well worth a look including plans for a dynamic balancer.
Gear stuff, foundry stuff, etc etc etc

[ken seeber]

LM6 is around 10-13% Silicone and doesn’t have the qualities for a piston IMO. Meteor kart pistons use Alloy G, an 18% Si material. STRIKE pistons are made using that same Si content.

Quote: “LM6 has a high resistance to corrosion and excellent castability. It finds uses in numerous places due to these properties such as marine, manifolds, motor casings, cast doors, pumping applications. It is also especially suitable where castings need to be welded together. The ductility of LM6 castings means they can be easily rectified and modified into shape. It is equally adaptable for both sand and permanent mould casting and for die castings.

LM6 aluminium castings have excellent resistance to corrosion in marine environments, possess excellent ductility, but is of medium strength and is not heat treated. Its strength falls off rapidly at high temperatures. Its elastic limit is low and it is fairly difficult to machine”.

Lots of similar points on Google.

If you were to make up your own pistons, you’d be far better getting together a whole lot of used high performance 2 stroke pistons and using these. These will undoubtedly be of a higher Si level, giving them hard wearing, lower expansion and hot strength qualities, all what will be required in the sleeve engine, which I think, will have a hotter piston due to the second clearance around the outside of the sleeve cylinder. Remembering to smash them first to remove the steel anti rotation pins. If you chill cast into a steel mould, a T5 heat treatment should be ok, rather than a full T6 solution heat treatment.

Our AR pins are 8 mm long, and Ø1.54, tapered at one end and have a longitudinal groove to prevent hydraulic locking should the drilled hole have coolant remaining. Using these, the hole should be blind to prevent any combustion pressure leakage via the groove.



Certainly though, I’d be trying to find a commercially available piston before going to the trouble to custom make one. A FOS engine can do with a very short piston, as the bottom of the exhaust ports is well up the cylinder, rather than down to BDC in a conventionally ported engine. Not sure about the actual phasing and relative port positions in the sleeve engine though.

[husaberg]

LM6 is around 10-13% Silicone and doesn’t have the qualities for a piston IMO. Meteor kart pistons use Alloy G, an 18% Si material. STRIKE pistons are made using that same Si content.

Quote: “LM6 has a high resistance to corrosion and excellent castability. It finds uses in numerous places due to these properties such as marine, manifolds, motor casings, cast doors, pumping applications. It is also especially suitable where castings need to be welded together. The ductility of LM6 castings means they can be easily rectified and modified into shape. It is equally adaptable for both sand and permanent mould casting and for die castings.

LM6 aluminium castings have excellent resistance to corrosion in marine environments, possess excellent ductility, but is of medium strength and is not heat treated. Its strength falls off rapidly at high temperatures. Its elastic limit is low and it is fairly difficult to machine”.

Lots of similar points on Google.

If you were to make up your own pistons, you’d be far better getting together a whole lot of used high performance 2 stroke pistons and using these. These will undoubtedly be of a higher Si level, giving them hard wearing, lower expansion and hot strength qualities, all what will be required in the sleeve engine, which I think, will have a hotter piston due to the second clearance around the outside of the sleeve cylinder. Remembering to smash them first to remove the steel anti rotation pins. If you chill cast into a steel mould, a T5 heat treatment should be ok, rather than a full T6 solution heat treatment.

Our AR pins are 8 mm long, and Ø1.54, tapered at one end and have a longitudinal groove to prevent hydraulic locking should the drilled hole have coolant remaining. Using these, the hole should be blind to prevent any combustion pressure leakage via the groove.

Is it ok for me to post the AR stuff in ESE there was a question ages ago I guess you missed.
This is the Burt Monroe Piston Die
They showed how he used it at the start I think of the movie.
He used to Use Ford Y alloy pistons as they were the first special high strength piston alloy they he could get cheap he later used Diesel pistons as I think they had a higher Si content.
The bottom pic is I assume the jig to do the valve cut outs. (You shouldn't need these in a modern engine lol)

Aftermarket performance pistons made from the most common 4032 and 2618 alloys are typically forged.
The "4032" performance piston alloy has a silicon content of approximately 11%
The "2618" performance piston alloy has less than 2% silicon, and could be described as hypo (under) eutectic. This alloy is capable of experiencing the most detonation and abuse while suffering the least amount of damage. Pistons made of this alloy are also typically made thicker and heavier because of their most common applications in commercial diesel engines.
Aftermarket performance pistons made from the most common 4032 and 2618 alloys are typically forged.
http://en.wikipedia.org/wiki/Hypereutectic_piston

[ken seeber]

Is it ok for me to post the AR stuff in ESE there was a question ages ago I guess you missed.

Husa,

AR pins. Anything can go anywhere, it's all in the public domain once posted.