Boeing AH-64 Apache (700)

Thanks, it's turning out better than expectation, but complexity has gone up.

he doesn't seem to be too enthusiastic about this build though

Ah you might have hit on something most servos operate on 1520us frequency are the servos you have 760us ? They won’t work if so unless you tell the recv/ FBL unit so. Ask me how I learned that one lol.

So I have a Roban Apache. By default, it was designed so you would mount the ESC in the fuselage right in front of the mechanics, then, in front of that (just behind the nose) you would place your two 6-cell batteries. Your flight controller (and probably your receiver too) would mount on the mechanics behind the cyclic servos.

As you've now noticed, there isn't a lot of room in the fuselage for extraneous equipment. If you are planning on using a separate BEC and/or 2-cell battery for your electronics, you could probably mount them on inside of the fuselage up front in the recesses on the left and right sides. There should be enough room in those recesses so the cockpit will still fit without interference.

My setup is a giant mess with stuff everywhere because I just had to put a 2-speaker sound system in mine. So I have a speaker, a sound module, a small 6S battery to power the amp in the sound module, a 2-cell receiver battery and my two 6-cell 5000 packs all crammed in front of the mechanics. The only place for the ESC was the open area underneath the mechanics. It's super ugly, but it works.

The 10 in warbird pilots will fit, they are a little big at 10in, but you can do a little surgery to the wire armature and shrink them to about 8in