Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Scale Model Gas Engines - Hit & Miss - Throttle Governed - Non-Compression – etc => Topic started by: marv in minn on September 28, 2022, 02:11:18 pm

Title: Re: fabricated 1/4 model Best engine
Post by: RedRyder on October 01, 2022, 10:50:35 pm

Wow...... Marv, you've done it again...!!!

Title: fabricated 1/4 model Best engine
Post by: marv in minn on September 28, 2022, 02:11:18 pm

i have been working on getting this model Best engine running for Tom Madden.
the interesting thing is that they used a 1/4th speed cam gear with 2 exh lobes.
the timing pushrod makes contact on the push and pull of the arm.
the original engine uses a wipe spark igniter, the model was built with a spark plug
i dreamt up the wipe contact timer and had to rework the intake valve plus adjustments
it uses a fly ball governor for hit-n-miss operation.

https://www.youtube.com/watch?v=LXb6HQJv4Ow