Here is some info on my 29+ year old Laser converted to electric. It's a 1/3 scale 98" Wayne Ulrey design that was completly scratch built by my dad in 1982. I flew it at the 82 TOC & placed 7th . I always felt I would have done better if my engine had been more reliable. Anyway, I wanted to fly it in Rusty's event but didn't want to use the Tarten engine. I was afraid to use a modern day gas engine due to vibration on the antique airframe. Also, the wing ribs are made of foam and I'm told by someone that tried a gas engine in one of these the wing ribs totally disinagrated. I therefore converted it to electric. I've attached some pictures. I'm using a ElectriFli 55cc electric motor with a Castle Creations Ice 80 speed control. I'm using 2-6s 5800mah Turnigey batteries. I'm running a 19/8 Xoar wood prop and can fly an IMAC type pattern for about 6-7 min if I am careful with throttle management. The airplane is light at 16 1/2 lb w/o batteries however the 2 6s packs weigh 4 lbs so flying weight is 20 1/2lb which is actually pretty light for an airplane of this size. When I get more time I'm going to use a larger speed control and more prop however it flys really nice now with very good vertical if managed properly. This conversion has been a huge learning experience but has been very satisfying to once again get the bird in the air. I only wish my dad could see her fly again.
Mark