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sbwhart:
It sounds like it wants to go Nick, Have you tried running it in by connecting it up to a motor/drill and letting it run for 1/2 hr with plenty of oil just to get rid of the tight spots.

Good luck

Stew
NickG:
Thanks Stew,

No, I haven't tried that but might do so it sort of laps itself in in the right place naturally. think the only thing that could happen really is the con rod could bend. If I adjust the collar so as to not let it go too far in that might work though.

Need a plan of action but don't think I'll get a great deal done over, only got tomorrow night before xmas really but might get a couple of nights over the break.

nick
raynerd:
Nick - I know your a far more competent machinest than me but I have found that my engines have always run much much better after running in for a short time. Infact, my first one would only run upside down! I ran it upside down for an hour and when I turned it over it was fine!

I think it is definately worth hookling up a small motor to turn it over for 30 minutes or the best part of an hour.

Looks amazing, bummer it is not running but I have every confidence it will do!

Chris
John Hill:
For a very fine clearance how about a little talcum powder in the bore?  I understand it is a lubricant but it is also an abrasive (if such a thing is possible).  Maybe someone know more about the stuff?
sorveltaja:
Nick, nice work  :clap:.

If the engine gives a noticeably kick, as yours, it means, that you are on the way to get the runner.

That type of engine is known to be notoriously critical about the adjustments. I have built different types of them in the past, and none was successful.

When looking at Jan Ridder's engines, he must have some magical touch, as his engines run quite happily.

Anyway, keep at it :thumbup:.

   
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