New CARF P-51D Project
#62
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My Feedback: (3)
Details of the stab set up. Pretty clean and simple, there are ply blocks epoxied into the stab for servo mounts. Initially I was going to use the heavy duty plastic servo horn included with the servos but the clevis pin isn't long enough to lock in place. The larger metric clevis supplied by CARF have same pin length as the Sullivan clevis so the better choice is the blue aluminum servo horn included. The pin hole is tight but working it through with a drop of oil made it go through.
In the fuse at the base of the stab I put a gromit in the hole to protect the servo wires, both sides.
In the fuse at the base of the stab I put a gromit in the hole to protect the servo wires, both sides.
#64
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The KOLM supplied firewall is all but unusable so I have to design a new one. I'm using it for a template. Unless this gets a total update don't bother getting the kit.
Im planning a full baffle and airbox build. After the firewall there will be two floors and a duct. One floor will be for the tank and servos. The second floor will be for the cockpit. The duct will be from the wing bolt back to the radiator exhaust.
Im planning a full baffle and airbox build. After the firewall there will be two floors and a duct. One floor will be for the tank and servos. The second floor will be for the cockpit. The duct will be from the wing bolt back to the radiator exhaust.
#67
Its got a ZDZ 100 in it. Pain in the ass, I thought it would be easier than the Kolm... having second thoughts. LOL I designed and printed machine guns for the Mustang. Been using the 3D printer for a lot of things. Used it to make the servo mounts for the flaps and ailerons as well.
#68
Interesting to see that Kolm redesigned the whole ducting system to direct cool air over the carb side of the engine. I bought that kit recently as it seemed to make much more sense to me to do it that way. Carbs will be much happier with cool air I think.
#70
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Thanks Craig, lots of work if your going with a big engine for sure!
Im making an air box around the carbs with a cold air inlet I think. Haven't posted pics yet but I'm making a duct thru the plane to draw hot air out too.
Mike, the 6x6 fabric was a sample given to me by a friend. He's into aerospace composite materials and retired from the airlines. This fabric is pretty high end. It's two layers of 6K stitched at about 90 degrees relative to each other. It conforms to compound curve surfaces really well. I'm not sure you can buy it in small quantities or even find it in a catalog. He gets samples or remnants from big companies and sometimes doesn't even know what it's for.
I used West Systems epoxy with the fast catalyst on this fabric, turned out very tough.
Im making an air box around the carbs with a cold air inlet I think. Haven't posted pics yet but I'm making a duct thru the plane to draw hot air out too.
Mike, the 6x6 fabric was a sample given to me by a friend. He's into aerospace composite materials and retired from the airlines. This fabric is pretty high end. It's two layers of 6K stitched at about 90 degrees relative to each other. It conforms to compound curve surfaces really well. I'm not sure you can buy it in small quantities or even find it in a catalog. He gets samples or remnants from big companies and sometimes doesn't even know what it's for.
I used West Systems epoxy with the fast catalyst on this fabric, turned out very tough.
#71
My Feedback: (18)
Hey Craig, the second mustang is my friends. Just helping him get it done. I flew the my Mustang two more times last week. Two of the motor mount bolts backed out! I put lock nuts on top of the blind nuts on the top two, and one of the bottoms. This thing vibrates violently at idle... LOL Take any plane you've built and make it twice as strong. Most of the mounting plates I've put in with hysol have broken free. Arguable if you should use ZAP to glue some stuff in for vibration damping. This is one of those planes that for every few flights you have, you'll earn an hour of maintenance, gotta stay on top of it.
The mustang flies very well and I still get a huge smile on my face on flybys... the sound is so distinct. Having an electric starter is awesome as well...
Chris, stinks the mounting kit is not up to par. I had the exact same problem, but I attributed it to them sending me the wrong length motor.... It will be interesting to see how this plane does with the three cylinder.
Headed back out with it today :-)
The mustang flies very well and I still get a huge smile on my face on flybys... the sound is so distinct. Having an electric starter is awesome as well...
Chris, stinks the mounting kit is not up to par. I had the exact same problem, but I attributed it to them sending me the wrong length motor.... It will be interesting to see how this plane does with the three cylinder.
Headed back out with it today :-)
#73
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My Feedback: (3)
One thing I'm doing on all the engine bolts is cross drilling the heads and using safety wire. I've been doing this off and on with various engines over time and it does work. With two DLE 55 with side exhaust and Pitts style muffler I had two experiences in two different planes. In a Mustang without safety wiring the bolts it would come loose after 3-5 flights regardless. On an Ultimate with the same set up, different engine, I decided to drill the bolts and wire them plus a drop of thread lock. So far with a few hard aerobatic flights the muffler is still snug tight.
I plan to wire up as many screws as I can on this project! Even the fuel lines!
I plan to wire up as many screws as I can on this project! Even the fuel lines!