Stirlingengineforum.com

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

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

Bebs wrote: ↑Sat Jul 06, 2024 10:59 am Hello,

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

...

What way is that?

staska wrote: ↑Sat Jul 06, 2024 1:46 pm 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.

Typically power to size ratio improves with higher RPM.

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

Yes.

Tom Booth wrote: ↑Sun Jul 07, 2024 9:13 am

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.

The following is interesting:

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