starting scotch boxer steam engine project

[burnit0017]

<a href="https://www.youtube.com/watch?v=m2AyB1kPypI" target="_blank">http://www.youtube.com/watch?v=m2AyB1kPypI</a>

Hi, thanks, video shows manual operation using a 10 pound weight as a flywheel. I have to remove a few knocks and run the steam lines to each cylinder. I am using 3/8 brass rod for the spool valves. I am not sure how long the valve should be open? There seem to be a short dwell period at the end of each stroke.  Looking for a source for a large flywheel or possibly how to fabricate one.  Not much to look at and I am making a lot mistakes but the design seems to be very forgiving and the mistakes are easy to correct.   

[Paul]

Very nice, +1 from me!

I've built a couple of double-scotches with eccentric/yoke set up but I'm looking into building one with this 'whack valve' idea too, much smaller than this giant though!

Paul

[burnit0017]

Hi, thanks. I made a lot of fabrications mistakes on version 1. Working on version 2. I hope to post some photos in a few days. I did find some off the shelf parts for the steam line between the two piston cylinders. The idea comes from another project posted on this forum.  I look forward to seeing your project.

[Paul]

Proper plumbing!

[burnit0017]

Hi, the copper tube may need to be insulated. I am not sure what to use?? Suggestions are welcome.  I checked your videos on youtube, the scotty and the double scotch are the source of inspiration when I started this project.

[steamer]

<a href="https://www.youtube.com/watch?v=m2AyB1kPypI" target="_blank">http://www.youtube.com/watch?v=m2AyB1kPypI</a>

Hi, thanks, video shows manual operation using a 10 pound weight as a flywheel. I have to remove a few knocks and run the steam lines to each cylinder. I am using 3/8 brass rod for the spool valves. I am not sure how long the valve should be open? There seem to be a short dwell period at the end of each stroke.  Looking for a source for a large flywheel or possibly how to fabricate one.  Not much to look at and I am making a lot mistakes but the design seems to be very forgiving and the mistakes are easy to correct.   

Nice Vid!    Check out Stew's thread on the Potty Cross Single
http://www.modelenginemaker.com/index.php/topic,2890.10.html

Nice way to make a big flywheel.

Dave

[burnit0017]

<a href="https://www.youtube.com/watch?v=3J9SEBgoTMY" target="_blank">http://www.youtube.com/watch?v=3J9SEBgoTMY</a>

Hi, first run of project on compressed air. There is a lot of blow by at the piston rings that will have to be solved but it is a start.