Pistons and connecting rods 40% lighter

[Bebs]

Hello,

I have found a way to get pistons and connecting rods that are 40% lighter than aluminum pistons.

How is this weight saving noticeable in a Stirling (what else)?
How many percent more power is possible?


Greetings Bebs

[staska]

Kind of none. We are at best of 3000rpm with some helium gas. Or 1500 with air/n2

[Tom Booth]

Hello,

I have found a way to get pistons and connecting rods that are 40% lighter than aluminum pistons.

...

What way is that?

Kind of none. We are at best of 3000rpm with some helium gas. Or 1500 with air/n2

Not sure what RPM has to do with power necessarily.

You could have low RPM and higher torque for example.

[Fool]

Typically power to size ratio improves with higher RPM.

[Tom Booth]

Regardless, I'd still be interested in knowing what the OP is doing to make engine parts lighter weight.

[Fool]

Yes.

[staska]

Not sure what RPM has to do with power necessarily.

You could have low RPM and higher torque for example.

Below 3000 rpm we do not see significant dynamical load on pistons and other moving parts. Mostly static, due to different forces. Above 6000 rpm - dynamic forces will break conrods etc if engine is not balanced or parts are too heavy.

[Fool]

The following is interesting:

https://en.m.wikipedia.org/wiki/High-speed_steam_engine