I have plans for a 120" corsair, i also have a sachs 5.8, is this going to be enough engine for a bird of this size? I estimate the weight at 50 to 60 lbs., if the 5.8 isn't enough what will be the best choice?
Thanks for any help:
P51man

No worries... i built a Nosen P47 with all the bells and whistles and ran a stihl 5.0 spinning a 24/10 prop and it was hauled with authority.
My P47 had Likes brand retracts and weighed out at 52 pounds.....funny cuz it didnt seem like a pig to me never clamored for altitude. take off roll was fairly short and landing was as soft as a .40 sized trainer

I have a Brison 5.8 in my Ziroli Corsair and it has very good performance and weighs about 35 lbs. The 5.8 definitely would not be enough engine for a 50 - 60 lb Corsair. You could get it off the ground and fly it around but it would be a pig in the air and you wouldn't like it.

I'm not just guessing. I have a very good friend who flies a 54 lb all composite F8F Bearcat. He uses a DA-150 twin to fly it in a very realistic manner. The DA performs very well but the plane is certainly not over powered, it's just right.

Another big consideration on a plane that size and weight is your selection of landing gear. Gear such as the Robart rotating retracts which work fine in my Corsair would crumple under a landing with the plane you have in mind. Going up to a plane that size multiplies the problems.

Here are a few photos of the big Bearcat and my Corsair.

Good Luck,

Ken