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After posting my reply, I went back and reread your question. I had misunderstood what you were asking. From my experience with other aircraft, a change in motor or other equipment shouldn't alter the ideal CG location. That being said, it seems to me that thrust angle might need to be altered with ...

The sheet in the kit I have says "1.4 inches back from the leading edge of the wing", measured at the CENTER where the wing halves join. It also says emphatically to go no further back than that so, if you are looking for a range, I would suggest "1.4 inches aft of leading edge at center or slightly ...

In case you are wondering why the Citabria hatch and one other part have a thin line on them. Here's why: the reinforcing piece/tongue for the hatch is a snug fit so alignment is critical. Great idea, Doug!

VERY nice! Get someone to record a flight video and post it here.

Here's my 19th WillyNillies build, the P-Jay. All ready to go and awaiting maiden! I did decide to go ahead without an active rudder. I have a second P-Jay kit so I might do active rudder on that kit. One thing is certain, I should darned well be able to SEE it! :lol: For anyone who has built one of ...

Thanks. I'm having to use a LOT of down-thrust. Really wants to zoom. Otherwise, flies great.

HT1 are hatch tongues and are indicated on the drawing. No idea what FB1 and FB2 are for. I haven't used them. At least not yet. Perhaps Doug will see this and educate us both.

Here's my 17th and latest Willy Nillies build, a J3 Cub. Emax 1407 w/APC 6x3SF prop, Skywalker 15A ESC, 4x Emax 4201 servos, and a 2s/450mah battery. AUW is exactly 222g. Balances perfectly on the spar with no additional weight fore or aft.

I am putting a hatch on the bottom in addition to the canopy hatch. My bottom hatch will be held in place by a small screw because I don't anticipate needing to open it very often. My canopy hatch is secured by magnet. I do not think the bottom hatch weakens the fuselage. Hopefully I am not mistaken ...

Ok, here you go:
1. Flat airfoil is the fastest. Top airfoil/flat bottom is slightly less fast. Fully symmetrical wing is least fast (but still fast by design.)
2. Yes, bottom hatch. That is how I'm building mine.
3. This plane is designed for electric power. Putting a glow engine will probably ...