I thought I would throw my 2 cents in here. I've been flying a Giant Stinger all summer with a G-62 in the nose. I spent half the summer working the bugs out of the plane, but after 45 logged hours, I've got it right. (as right as possible ;-) Mine came in at 19 lb. No smoke or spring starter. I use the Sullivan double handle starter on 24 volts to crank it. It started on 12 volts until about 20 hrs on the engine. Then the rings really started to seat up and it takes 24 volts to spin it. Everyone is talking about heavy batteries to crank the starter with. I started out with 2 lawn mower batteries. That made for a HEAVY flight box. Now I use two of the Tower 5 AMP gel cell batteries. They weigh just about nothing, and will crank the G-62 all day long. Like I said 45 hrs on engine and not the first dead stick! When I put that kind of money in the air, I don't want to worry about the engine quiting. I run a 20 oz tank, 15 min flights, and land with a tad less than 1/2 tank. Using a velocity stack and Mejzlik 22x10 prop getting 7700 rpm. I started out with a Zinger 22x6-10 and got so so performance. The carbon fiber props don't flex at all and blow the Zingers away in performance. Mine will hover at 1/2 throttle or so and go straight up when given full throttle. Give the G-62 20 or 30 hours to break in and you won't be dissappointed. I've got a long list of modifications to the GS. This plane will not stay together if built per plans. Drop me an e-mail if interested in them.