Stirlingengineforum.com

Would be interested to know if anyone knows of any possible contenders for the fastest rpm stirling/hot air engine in the world?. This is not an official recognition or prize winning ceremony so feel free to submit any legends you heard at the bar as well as some genuine examples of very fast engines.

I'll start, my fastest is around 2000 rpm.
Ian S C

PS. PS Official recognition may be awarded for the best tallest story.

I found this one: 2550 RPM: https://www.youtube.com/watch?v=cKLH3lPn1q8

Andy Ross's B-20, 35 cc Ross Yoke engine has a free speed of 4700rpm.
3250 rpm 40.8 W
2400 rpm 41.7 W
2600 rpm 41.7 W
2750 rpm 44.1 W
3000 rpm 40 W
3200 rpm 39.7 W
Ian S C

Ian S C wrote:Andy Ross's B-20, 35 cc Ross Yoke engine has a free speed of 4700rpm.
3250 rpm 40.8 W
2400 rpm 41.7 W
2600 rpm 41.7 W
2750 rpm 44.1 W
3000 rpm 40 W
3200 rpm 39.7 W
Ian S C

I bet mr ross will be disappointed to hear that my Mk1 combobulator achieved a free speed of 4701RPM. I just wish I had made a video before it was stolen by a dozen masked Chinese cat burglars who were obviously stealing it for the Chinese military.

Wellington, with a bit of work you could get nearer to 4000 rpm, first change the aluminium displacer for a stainless steel one, make a burner that gets the hotcap evenly red, fit free running bearings on main and con rod big ends. Improve the cooling, either a fan, or change to water cooling. Nice motor, don't touch it, it's ok as is.
A mate has one similar that he got in USA, years ago he was building and selling solar hot water systems, and used the motor to demonstrate the power of the sun. I think his will do 3000 + rpm.
Ian S C

Although I can't beat Andy Ross, I'm in: 3400 rpm :
http://stirlingengineforum.com/viewtopi ... 1974#p8974

Plani

Man! I only got to 1800rpm without a load.
You guys, just blew me outa the water.
I hope one of you guys reach the magic 4000 rpm
Trev