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: MasonvilleEngines on May 06, 2019, 08:35:32 am

Title: Running hits and miss model on propane...setup.
Post by: MasonvilleEngines on May 06, 2019, 08:35:32 am
Hi,
 I would like to give this a try. I saw a video ( Gil's) with a regulator, but could not find it. I was wondering if anyone would experience running model hit and miss with propane could suggest what parts are appropriate/available. Thanks.


Len.
Title: Re: Running hits and miss model on propane...setup.
Post by: RedRyder on June 19, 2019, 12:15:56 pm
Hi  Len,  Clif Roemmich made the demand regulator that I use most of the time. I think it uses a Wisconsin fuel pump diaphram. I believe there are plans available on line.

Gil
Title: Re: Running hits and miss model on propane...setup.
Post by: MasonvilleEngines on June 19, 2019, 02:16:51 pm
Hi Gil,
 Thanks I will take a look. Enjoy the show season!


Len.
Title: Re: Running hits and miss model on propane...setup.
Post by: odu50 on June 19, 2019, 03:08:22 pm
Hi Len.
I made some modifications on a model Red Wing
I made a video here
I hope this can give you ideas.
(excuse me for my english)  ;)

https://youtu.be/BM90bqIaBsU

Regards Christian.
Title: Re: Running hits and miss model on propane...setup.
Post by: MasonvilleEngines on June 19, 2019, 04:44:33 pm
Hi Christian,
 Thanks for the video, beyond what I was thinking about...but now I am thinking beyond. Nice setup!


Len.
Title: Re: Running hits and miss model on propane...setup.
Post by: RedRyder on June 20, 2019, 05:58:41 am
Here are a couple videos.


I made a simple propane mixer to use with the demand regulator.


I experimented with different fittings and lengths until it ran the engine nicely.


Enjoy!


Gil



In this film, the original mixer is lowered and the needle valve opened several turns
and the air inlet is mostly blocked by the choke plate.

https://youtu.be/pt-as3rgJHM


Here I am using the new makeshift mixer...

https://youtu.be/TMwv11TeBZs


https://youtu.be/6GSD8VoWTuQ





Title: Re: Running hits and miss model on propane...setup.
Post by: MasonvilleEngines on June 20, 2019, 06:17:39 am
Hi Gil,
 Thanks. Yes one of these must be the one I had previously seen.  I will give this  method a try when I get back to it. Although I am quite impressed with Christians posted solution.


Len.