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<t>It WORKS!!! Got it running last night thanks to all the help I got here. I reduced the throw on the displacer. It still bottoms out but just barely. I will reduce the thickness of the displacer this weekend so that it does not touch at all. That will help a lot. The engine runs now very slowly bu...

<t>Steve<br/> I have it now at least trying to work. It will spin maybe 10 revolutions the correct way and only 2 or 3 backwards when sitting on a cup of hot water. That tells me that friction is now my enemy. I am thinking my piston is too small. My chamber is 6" x 1" and my displacer is 5 3/4" x 1...

<t>Can anyone tell me what is going on with my homemade ltd engine. It <br/> doesn't run at all. In trouble shooting the engine I disconnected <br/> the piston connecting rod and the displacer connecting rod. I heated <br/> the bottom surface on a cup of hot water and manually moved the <br/> displa...