Someone led me to the plans on the AMA Plans Service.  The covering is Esaki silk, nitrate dope.  The canopy and black around the front is Sig butyrate.  Numbers and letters are black tissue.  The tank is way too big, good for at least 15 minutes. Tank is uniflow and ran fine through level flight with ups and downs.  It needs longer lines, as it is faster than expected with 5.5 x 4.5 prop.  I'm going to make up a set of 30 ft lines and try them, maybe try a 6 x 3.  I'm going to measure fuel as I don't want to try to plumb an even smaller tank.  The little Arne Hende .5cc Drone has about an hour of running time, and I'm getting better at starting it.  A Drone 29 is shown for comparison.  Weight is 3.5 oz.

I also have an Arne Hende .5cc Drone replica, and never have gotten it running.  Is there a trick?  I do OK with PAW, Cub diesels and Davis conversions.

Thanks, I can do that.

I suspect the crankshaft timing is mild enough that it works pretty well either way.  No intention of taking it apart to investigate.  I was surprised at it running backwards, as it had not done that before.  I think it is an indication of a hair too much compression, and cured it by backing off the starting compression a little.