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"Fulton`s Folly" - no model - trip

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Hankwilliams:
Thanks all!
Here some details: The new rudder, the engine with slide valves removed and the steam pipe...

DamienG:
 :no1b

Hankwilliams:
Here the new PTFS Teflon slide valves compared with the old brass ones.
I expect less pressure friction and therefore more power of the engine. I will tell you the result. If I`m right - may be, that it is worth while to alter other slide valve (not piston valve) engines in this way, including models.

Thomas

Hankwilliams:
Hi friends and neighbors,

the running test with the teflon slide valves were full success, as the pictures shows - it was a powerful turning of the paddlewheels. I estimate the increase of power at least by 30 %.
Indeed the area of the my slide valves (ca. 7 square cm) and therefore the pressure against the cylinder mirror is relativ large, it could be considered, whether it`s advantageous to alter also slide valves of model engines with teflon.
Pressure was about 90 - 100 psi or 6 - 7 bar.

Thomas

derekwarner_decoy:
Thomas.....

I am sure Winfried Niggle would be happy seeing his miniature steam oil displacement lubricators :gift being used on such a large scale engine....

Derek

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