Silent engine! KYG SE905 Japanese stirling engine

Enjoy! THIS sub-model of the KYG-SE905 does have a "regenerator" that was it's developmental selling point over earlier models. The regenerator is in the blue anodised bit. Marketed as "Hyperhead". From https://www.kyowa-gokin.com/list#a06 under this model SE-905HP you see :
"Regenerator effect:
Attaching a regenerator to a Stirling engine improves thermal efficiency and increases output, but in the case of a small engine, using a matrix in the regenerator increases pressure loss and eliminates the effect. Therefore, we decided to refrain from inserting the matrix and create a structure that has the function of a regenerator.

...The HP head is heated and stored by heat conduction from the heat cap, heat is exchanged when the working air passes through the space, and the output is greatly increased due to the increased thermal efficiency. (50% or more compared to the conventional method)"

Check out my other engine videos:

Chinese Hit and Miss,
full speed https://youtu.be/KKf6NkoD8II
piston removal https://youtu.be/ffg1-24NXYQ
easy mods https://youtu.be/d-fb6BiuXHw

big home-made Stirling engine from junk parts
Slow musical reveal https://youtu.be/Df8nlaZgNKg
workbench run https://youtu.be/oXwNzZxhznc
some original parts https://www.youtube.com/watch?v=t1134NcpXE4&t=18s
ideas guide to building https://youtu.be/wkuO3DWhqTg

flame licker /vacuum / flammenfresser motors
Chinese and German https://youtu.be/d-fsJpgvqbU
V2 Chinese vacuum engine mods and tuning https://youtu.be/anaevMjr-IU

PM Research 1895 RIDER-ERICSSON HOT AIR PUMPING ENGINE
https://youtu.be/zwBAxkLCCGA

More to come!
Thomas PCGuru ENGINES
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KYG SE905 by Shuichi Matsumoto, https://www.kyowa-gokin.com/company
High quality hobbyist's stirling engine utilising Ross yoke and rudimentary regenerator.
Right click on his website and left click "Translate" (Chrome users). You'll find videos, a manual and other info on his site.

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