Power piston diameter

[Nikhil Bhale]

Hi,

I am new to this forum.
Some day back I was able to machine my own Stirling engine which actually runs.
https://youtu.be/gJo1rrY8PmQ

But it takes too much heat to run.
I was thinking if the power piston diameter is made as big as possible it would help to run it better.
My thinking is that a bigger surface area will produce more force (pressure x area) and this will help to run the engine.
But the frictional forces will also increase.

What do you think.

Regards
Nikhil

[Tom Booth]

As Sadi suggested: "First I would advise you to protect the upper "cold" part of the engine from unnecessary heating from the burner"

It looks like the stove burner has the whole engine awash in heat. So, in actuality there may already be much too much heat being applied.

Here is an example of a way to confine the heat/flame where it is needed and keep it away from where it is not wanted, with a heat shroud and chimney.

https://vimeo.com/3778239