I am putting together the Top Flight P47 Gold Edition kit and was looking for some help on the engine choice. I am building this kit with retracts, flaps and drop tank. I am guessing the weight will be near the advertised range of 10-12 lbs. I would like to go with a .91 4 stroke. I have one in my 60 size Hellcat and I love the sound and the torque it has. I would concider using a 2 stroke if it makes for a better flying choice.
If anyone has a similar setup I would like to know what engine you are using with this model and any tips you may have. My thanks in advance...........Tugboat

Hesitate not Jug Pilot consider a 91 4/C to the powerful and well mated :OS 120 4/C WITH pump and might I suggest the O.S. products "flex exhaust that with a little creativity can be nun out a scale like location behind the lower side cowl-

I am finishing my TF P-47 and decided to go with a pumped OS 120,which fits in the cowl nicely,my JUG has all the extras as well, including a retractable tail wheel, the extra weight in the nose helps out with balance.
the OS 91 would fly it,but you might be adding some lead in the nose to get the CG right I decided I wanted power over dead weight.

Thank you Bigtim and RamC for your replys.........I am glad to hear pros for the 4 c engine..........now which one to use ????? but I still have plenty of time to decide. I opened the "lumber yard in a box" today and started to assemble the stab.....Tugboat.

P51Tugboat,

I used a YS .91AC in mine with an on-board ignition and Robart retracts. I got concerned when I weighed it and discovered that it was a portly 10 pounds before I was to begin adding a bunch of scale details. As it turned out, my concerns were for naught as it flew beautifully throughout the speed envelope. In fact, I had so much fun flying it that I never did get around to adding all the other stuff.

I did my take offs at 1/2 to 3/4 throttle and flew the entire pattern at less than full throttle. With these throttle settings, the plane had good scale-like speed and performed all the maneuvers in a scale-like manner. The few times I opened it up it flew like it would break the sound barrier..........not what I wanted. But, the real plus to flying at lower engine speeds is that the engine sounds more scale-like, too. Remember, that P&W 2800 didn't turn but maybe 3,000 rpms.

Take your time and enjoy the build. Oh, and your choice of a .91 4-stroke is an excellent one. This is one of the best flying scale warbirds ever designed with not one fault. You are gonna have a ball!

Al

Hey Al,
Thanks for the input.......The 91 is defininately going to be considered. Like you mentioned, what I am going for is a " scale like " performance. What prop are you using with the 91?....Tug.

You could always consider the RCV 120SP and a large 15.5" to 17" 4 blade prop. It will give good performance if you keep your weight under 12 lbs.

Scott