Brodak MK II .049 on P-51 Mustang

This is a scratch built P-51 with a Brodak MK II .049 engine. This video would be of interest mostly to someone considering the MK II engine. You can hear from the video that the engine run is fairly consistent. Uniflow tank with Sig 25% nitro fuel and an APC 6x3 prop. Bench runs yielded a top RPM of 16,000 with an APC 5.7x3 prop. Certainly not a screamer, but a consistent runner.

Category:

Autos & Vehicles

Tags:

• brodak
• mk
• II
• .049
• c/l
• control
• line
• mustang
• p51

[earlyhemibill]

How long are the lines and what prop are you using?

[Struggler01]

@earlyhemibill - It's an APC 6x3 prop. I don't remember how long the lines were - 35' maybe.

[MissileMist]

Very nice flying, thanks for sharing. How does the brodak compare to a Cox Tee Dee? Is the P-51 your own design? Thanks

[Struggler01]

@MissileMist The Tee Dee is definitely more power.  The Brodak is probably more comparable to a Black Widow, but not as finicky.

[Struggler01]

@MissileMist Oh - and the plane is my design, but I looked at a bunch of Dick Sarpolus designs for inspiration.

[strikeronetuber]

I have one of these MKII, ran it for just one tank of fuel. Mine leaked a bit from the backplate and the needle changed settings just by staring at hit, even with a piece of silicone tubing over it. Probably got a lemon :(

It's sitting in the box right now, never got to run it again from that day.

Thanks for the video, happy flying!

[MalWolf01]

I bought one of these engines a while back, they are very nice.