Speed
 

Looking for info on best package for speed . Trying to best our field record of 148 mph.

I would appreciate any suggestions

hmmm
 

BVM Bobcat..

Speed
 

Homebuilder,

Are you looking for a prop plane or a jet? What is your skill level and how much do you want to spend?

Mark M.

speed
 

heres the rundown. i build for homebuilder, we have a new hanger9 p-51 that we want to go faster than 150mph. we currently have a world models p-51 with a 91fx in it and it goes 148mph. any recomendations on a power plant for the H9-p51.

Q-40's aka 422
 

422 is the AMA class of racers that use a nelson or Jett engine and yesterday I witnessed one going 178 MPH on the straight and level with a radar gun. Plane costs 200+, engine costs 350+ and spins 27,000 RPM in the air, what a sound! Speed rules!!!

Speed
 

Let's see... H9 P-51... Webra 120 (mounted inverted as idle is not really an issue)... Jett Engineering "Jett Stream" exhaust (down the side of the fuse)... 13x13 prop (we need 13,000 RPM on a 13 inch pitch prop, adjust nitro to achieve it)... Very tight linkages, with no slop or flex. Full bore... 10 degree down line. In theory 150 to 160 mph??? Oh yes, you might want a box to carry the pieces home in. I can't imagine it won't flutter. Good luck, and let us know how fast you can get it.

Speed
 

Taking a sport ARF to those speeds might be reckless and/or dangerous. If you plane to do this, reinforce as necessary and lighten along the way. You will need to put all of your controls internal to the plane and clean up the airframe in general. Then add a high torque engine with a huge pitch.

Your better solution would be to buy a purpose built racing plane. There are plenty of racing P51's out there. Post this question on the racing forum for working examples.

Mark M.

speed
 

I am planning to build this one very carefully. high torque servos. gap sealed hing lines top and bottom. and any thing else i might need to do along the way. if a world models can handle 150 i think this one should to. i guess we will find out.

Speed
 

Double check the wing and stab for inferior wood and proper strength. Also, remember to kill the engine if the wing/stab separates in flight.

Mark M.