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You can, of course. simply grind of the rounded portion an you are good to go. Might consider going to a larger dia. set screw to get a more robust screw socket.

Looks good to me! What kind of paint or was it powder coat?

Pertha, Thanks for posting the reference to the Model Engine Tests! I really enjoyed the ones I have read. Reminds me of the high school library where I would love to read Peter Chinn's review of model engines in Model Airplane News. I found the review of the supercharged OS engine...

Gordon, You are correct, must have had a brain cramp. Does not help your situation though. Any possibility of a measuring error??

I hope some others chime in here on this apparent mystery! I'd especially like to hear from some Hoglet builders on what degree spacing they used on the ignition magnets. Hope this does not hijack the original thread to much but may shed some light on that situation too.

Following this with interest. Building the Hoglet which is a 21 degree twin. The timing diagram calls for the magnets to be at 159 degrees apart. Not sure how to arrive at this timing except 180 minus 21=159

Has anybody tried automotive spot putty? Usually comes in a tube like toothpaste, red. No mixing and sands very well.

Take a look at a full size engine, you only need an adjuster on one end.

Don't know if its been mentioned but weight becomes an issue as we age. I built a number of larger engines but boxed up and ready to transport they weigh +/- 40#s. The smaller ones I now build are easily lifted by on hand! I think the smaller engines are fussy to build and run but worth it.

Some years ago I painted my concrete shop floor with bright red epoxy. I had read somewhere that it was a good color because it made it easy to spot dropped parts. It was kind of cheery too. Problem was it showed dusty foot prints in excess. I ended up repainting with a beige like my dirt...

I like the looks of your tank. Over the years I have made some plastic tanks, some crazed some did not. Since it was scrap plastic I've wondered what type of plastic holds up to fuel?

Brian, You don't need a left hand cutting tool. The tool is facing the center instead of the usual outward orientation. The mill is run in reverse to make the tool cut as it should. Randall was a good friend and though he explained this method to me several times it just did not click so I...

Brian, Randall's method was described in Model Engine Builder issue 11 re. the Hoglet. Issue 10 was the beginning of the build article. In MEB issue 7 William Wilkens described the method in more detail.

Will look it up tomorrow.

Brian, Interesting method. At it's heart is it different than the method Randall Cox described in building the Hoglet cams. I recently tried Randall's method and agree with his assertion it is a quick way to make a cam with a boring head in the mill turning backward and rotating an inward...

Thanks

Andrew, Does it run? Any video?? Thanks, John

if it were mine and out of ideas, I'd get the overlap down to 0. Overlap is great on high speed engines but models in my experience are happy with very mild cams. Why keep the intake open 45 degrees after bdc? Do you feel a pulse outward on the carb?

Don, Very interesting. I will look forward to any work arounds you or others come up with. Great idea.

Late to the party but I've had good luck just slipping a short piece of fuel hose over the end of the valve and spinning with my fingers or the drill press while pulling back slightly. Also does away with alignment problems.