Some numbers from running Poulan 25 with MA Classic 16x8 on 1:5 fuel (15/18 glow : 91oct Chevron gas) with glow battery power. The compression of that engine is not like my other gassers so flipping the prop is just PITA. And you never know if it starts backward so I used starter.

After I tuned the engine I got 7500 rpm top, 1500 rpm reliable iddle with OK transition. Looks like the engine is breaking in because I get better numbers every run. Now the best part. It took 15 minutes WOT (7500 rpm) to drain 8 oz fuel tank. I'm planning to put it on coroplast Piper Cub (86 inches span), with 24 oz fuel tank - it looks like I will need very big battery, because it is a lot of fuel for that engine

Now this F@#$%^ muffler is killing me. I welded these stupid pipees quite solid, but one broke loose again just after 10 minutes of running. I'm getting pissed. I hate that muffler.[:@]