Assistance needed: Stirling model accessory- how heavy can it be?

Discussion on Stirling or "hot air" engines (all types)
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Cocktail
Posts: 3
Joined: Sat Jan 13, 2018 9:12 am

Assistance needed: Stirling model accessory- how heavy can it be?

Post by Cocktail » Sat Jan 13, 2018 9:29 am

Hello, folks. First post here. I have an idea for a homemade accessory for a stirling engine model, but it is on the heavy side. I'm not sure a model would have enough power to rotate the accessory.

I have no technical expertise, but am told that the way to determine how much power an engine has is through its torque rating. While I see maximum RPMs for stirling models on line, I have seen no torque ratings.

I'm hoping someone who has worked with accessories of various load levels can advise me.

Thanks much!

Ian S C
Posts: 2137
Joined: Thu Dec 02, 2010 5:15 am
Location: New Zealand

Re: Assistance needed: Stirling model accessory- how heavy can it be?

Post by Ian S C » Sun Jan 14, 2018 2:36 am

Hi Cocktail, what is it you want to drive? My engines drive a number of things, generators/alternators, a water pump, a power hacksaw, and fans.
Once you have your motor, you can build a Prony Brake, and test the torque of your motor, and if you also use a tacho, you can check the revs.
Ian S C
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Cocktail
Posts: 3
Joined: Sat Jan 13, 2018 9:12 am

Re: Assistance needed: Stirling model accessory- how heavy can it be?

Post by Cocktail » Thu Jan 18, 2018 9:14 am

Thanks for your reply. My project is to have a stirling engine model power a cocktail shaker. I've concluded that the weight of a shaker + liquid and ice would be too heavy for a tabletop stirling model to power it. My revised idea is to have it power an old fashioned hand crank butter churner, which I think would be doable. I'll repost with this revised idea.

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