RE: Test stands for break in (not good)
I guess you didn't see that reply whereby the guy brakes-in his Zenoah G 80 twins on the bench by setting the RPM to 4000 and letting it set for a couple hours !!
"how rich" I ran my MVVS 35 about 700 RPMs below it's peak RPM on the bench, but I didn't run it to full throttle for a good 4 tanks,,
think about it, how much oil do you run in 5 gallons at 50 to 1, only about 15 oz, even less at 80 to 1, well in the 70s I ran 32 oz to 5 gallons in my Trials bikes, these are low revving engines and I very very rarely ran them over 15 MPH all day long, stop and go all day long and they never over heated never fouled a plug..
I ran my MVVS at 28 to 1 for the first gallon on the bench, then I leaned the mixer to 32 to 1 on the 2nd gallon on the bench,, 3rd gallon was 36 to 1 in the air, 4th gallon was 40 to 1 in the air..
""2 strokes don't need oil, its in the gas"" LOL Hughes LOL
Jim