Tuesday, May 06, 2008

P51 1460mm Wing Span






The World Models .46 P51 Mustang. This is a rather old version but seems I cannot search too much information about the flying character of this bird.
Weight 2.5-2.7kg
Wing Span 1460mm
Engine : OS50SX-H, retired from my Trex600N; as the cylinder head is heavily damaged by the broken ring (after difficult starting ). Replacement of the cylinder head cost 1/3 of a new Os50. In addition, the hex screw slipped and resulted in brutal jigsawing to open up the cylinder head. So I decided to use in on a plane.

BUILDING:
The kits include all you needs. The retractable landing gears are excellent, though the wheel cover is too thin and will break easily. In addition the coverings tend to be peeled off easily as the wheel may rub against the depression.

FLYING CHARACTER:
Amazing, this bird flies excellent with reasonable speed at APC 11 x 8 . Tachospeed reads maximum rotation at 11,500 (wasn't this lower than expected?) only at half turn needle valve.

Needle valve needs a 3 inches piano wire connected with a wheel locknut to make it easier to be tuned.

The Flaps are aileron mixed and not efficient as an independent flap. Flying in typhoon signal 3 shows the strong built of this bird. The bird will wag funny under gust of 60 kph. Landing is easy even in gust.

Stalling is not easy and there are plenty of climb power with the OS50. Looping is a piece of cake.

I plan to convert it to electric Warbird soon as I am sick with the oily film that may stain my car cabin.


6-2008 :
Finally retired after a heavy crash resulted from stall turning before landing. Main wing is intact but body detroyed.