EPP FPV Tail Mod

by Bjarkix2 | April 11, 2013 | (7) Posted in Projects

This is my guide to put the elevator on top, keeping the structural integrity intact, and making it more durable to landings. As well as enlarging the rudder(which is a must with this airplane) and adding a skid-plate to the back under the tail.

Plus with this mod:

+The elevator is raised from the ground, keeping it from being tared apart in rough landings

+The skid-plate raises the tail servos from the ground, keeping them from "biding the dirt" in your   rough landings

+You get rid of the Tail´s tendency to hang down in the turns, makes it fly more stable.

+Looks down right awesome!

Method 2     (Tougher, and needs less extensive materials)

First, you have to enlarge the elevator, and remove it from the tail of the airplane.

The foam i used was Depron foam, 9mm wide. dollar three foam board works good as well. You have to go 9 cm out from the leading edge of the rudder, and 3 cm above to have some play once we fit the elevator to the top. Then separate the rudder and the elevator from each other, it should look like this

Now You have to reshape the rudder, to fit the elevator. It is farley simple, just cut it out as you see here below. keep in mind that the top of the elevator is rounded, that is for the elevator to sit nice and snug on the top of the rudder. The triangle cut in the rudder itself in the left top corner, is cut to allow the elevator to move.

now you need to connect the rudder to the elevator, keep in mind that the elevator should be able to move up and down freely over the rudder. I simply used hot glue, to attach them to each other.

Now you have to put the rudder back on the plane. and again, hot glue is the choice i made. Now come the to options, you can either cut a hole in the carbon fiber boom, and reinforce it with a rod of some kind, or use the wood elevator holders already there. The strongest choice will be to use method 2, while method 1 sure looks a lot better, it isn't as strong, but it will suddenly do.

Simply run some wire around a barbecue skewer, and poke it through the elevator, then glue down the rod and  tighten the wires up to the outer ends of the wood elevator holders. finished it should look like this. 

 

 

That was Method 2

Here comes Method 1

Pretty basic: Drill a hole in the boom. Make room for a around 6mm wide rod by heating up some piano wire, and melting a hole through the rudder( and do a better job than i did :). Cut the rod to size, glue it in using hot glue, and remove the wood parts.

 And your done! 

As you can see, the skid plate under the tail boom, is cut out from foam, then i added a thick layer of hotglue on the surface, and so far it seems to be holding up very well :) Hope you enjoyed the build article, and i hope you guys are going to do the same :) Here is a video showing how stable it flies.

COMMENTS

MrFranklin on April 12, 2013
Hopefully, a vid to see the finished mod fly"n"

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Bjarkix2 on April 12, 2013
It´s there :)
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Bjarkix2 on April 12, 2013
most surtenly, i will try it out today, and upload a video of it later this evening :)
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EPP FPV Tail Mod