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Nice looking engine. The flywheel itself seems to be almost frictionless, but with the piston rod connected I see that the flywheel stops at random positions. It appears to me that the piston has either to much friction or is too loose inside the cylinder (no compression). It’s perhaps an...

Hello CB, Check out this. Could be of some interest to you. Regards, PalmRunner

Yes, the flywheel is made of a large 90mm ball bearing. The outer ring is simply blocked to the inner, so both are running together. I don't own a lathe, so I couldn't find better "flywheel". A bearing flywheel has the advantage that it is relatively accurate (balanced), which matters at speeds...

To my understanding Lamina and thermal lag engine are both the same type. Thermo-acoustic is something different. Actually there are no videos of thermo-acoustic engines in YouTube. All are Lamina/Thermal lag type, but some builders or sellers prefer to call their engines thermo-acoustic, just...

Here is a nice link on this topic: http://www.youtube.com/watch?v=0-PlT1yFQZ0

Thank you Marv for spending time answering silly questions. You are absolutely right, the experiment would be the best way. The theory is obviously quite complex. Totyo

Guys, maybe the subject is misleading … My dilemma is NOT whether I can use a candle as heat source for my LTD. The foam displacer would certainly melt in the center. My question was purely theoretical - forget for the LTD, consider only a simple alu disc heated either by a candle or by a cup of...

Yes, you are right it is not good idea to heat a LTD with a flame, but I am asking in principle… The point is that you apply high temperature, but in a small area - maybe 1cm^2 and the rest is exposed to ambient temperature, while if using a cup of hot water you apply less heat, but on much...

Hello guys. I have a simple question: Let’s consider two heat sources for a LTD Stirling - a cup of boiling water and a candle flame. Assuming that the engine would survive the flame temperature, I just wonder which heat source would spin the engine to higher rpm? In other words, If the bottom...

Here is my favorite :P oEILlh9hUVY

Hi guys, I’ve made a short video of my LTD. Here it is: 5Mbz5VXlhls

Great looking engine! Only one remark - this engine is a very low power device, max. 100mW. Therefore it is very important to minimize all possible frictions. I cleaned the bearings from the grease and used some light oil. Turning the flywheel by hand it takes quite a long time before it stops...

Hi kustomkb, congratulations, very nice job! All, If you are fan of the higher speeds I would recommend you using smaller volume test tubes while keeping the same piston size. This of course is not possible with the “thermo-pulse mobile” of Jan, because he uses the test tube as a working...

Hi Wes, The plates on my LTD are155mm. The displacer cylinder is ~135mm ID. Regards,

Hello guys, I'm glad I can help you with the little experience I’ve gathered when building Lamina. Fascinating engine, amazing that so simple thing works at all. BTW, I updated the Lamina pictures with the latest version of the engine...

Thank you guys for the nice words! Marv, A lot of interesting discussions about Lamina you will find in the yahoo HAES group http://tech.groups.yahoo.com/group/HotAirEngineSociety This engine is discussed very often and there is no good explanation yet, but the common agreement is that the...

Hello everybody. Check out the pictures and videos of my engines, could be of interest to some of you. They are made using very basic tools (no lathe, no plans). Some parts are taken from the local hobby shops and reprocessed to fit my needs. My first engine is an LTD Stirling able to operate...