Originally Posted by headlessagain

See this post from March this year https://www.rcgroups.com/forums/show...postcount=1600
I've always extended the nose on mine (at least 6 built) to help achieve the correct c of g. It also lets me access the pack from a simple top hatch and mine will accomadate 800-2200 packs although the larger packs do dent vertical performance. I also use a KFm-4 (6mm with 3mm top and bottom panels) wing and, on later builds, mount my elevator servo inside with the pushrod exiting out of the rear of the fuselage.
Andy

+1 on extending the nose!! I've built three now with longer snouts, they all flew great!! in fact I add at least 1" to every electric conversion (balsa glow/gas models) I've done, really seems to help balance and flying characteristics!

Saw this on another thread, and thought I'd share!!! A cool looking plane with some definite "Funky Funbat" possibilities!!!

Move the pusher motor back and you could still run a puller on there :-) That elevator looks to a bit on the large side.
Thinking of using CCW and CW motors from my expired quad to make a puller twin. Would work with the standard size version

For the first time in FOREVER it was semi-flyable today. (Temps in the 60's, winds in the 10MPH range.)

I decided my FunBat needed some excercise so I grabbed it off the wall. I noticed that the o-ring on the prop saver had failed, so I popped on a new one, charged a couple of batteries, and headed to a nearby schoolyard.

When I threw the plane up it was producing a LOT of prop noise above 50% throttle and seemed way down on power. What the heck? I landed and looked it over. Nothing was rubbing. Nothing was broken. The prop was seated firmly ... backwards. Yep - it seems that some idiot had put the prop on backwards.

I flipped it around and things went much better (and more quietly) after that.

The FB remains one of my favourite models. Unlimited vertical on a 1800kv motor and can take anything from an 800 to a 2200 3s pack without too much of an effect.
The first day I fpv'd I slapped my AIO set up on her and hand launched with the headset down. She's that stable and predictable. I now use my full size set up on her
Next one will be a twin using some spare quad motors and esc's from a 250 quad that I crashed
Andy

Took my FB out for a LOS flight prior to slapping on the fpv gear and glad I did. For some reason the elevator was way out of trim resulting in an unplanned touch and go before I got her trimmed out

Funbat enjoying an early Summer's evening flight (2 min 1 sec)

Andy

Been flying lots of FPV lately, small wings like the ZOHD Dart, Sky Shadow S800, Sonic F1, CTH Assassin, etc. I've also built a version of the mini drak! …. I enjoy FPV fixed wing flying, and want to built a slower flying FPV platform , so I'll do a pusher version of the Funbat! I'll use EPP foam, and will mount the camera and VTX in the nose for unrestricted view! need to think about CG, and prop slot configuration! want to use a 1200 kv motor and 7 or 88" prop, and fly on 3S 1300 mAh battery!

Here is my take on the Funbat which is just different enough for me to call it a Funbus .

I have made seven different versions now (almost as many as Andy has made of the Funbat ).

This is pics of the PIS version that I made with FPV / camera work in mind. You can jut make out the nose section that lifts off for the camera gear.

Not massively aerobatic it has more of a gentle trainer style flying character which is just right for me and possibly FPV

Sure that's bright enough Craig? :-) My stock Funbat is still one of my favourite small fpv models. Once you get used to the through the prop view it's a great model and very neutral inverted
Andy

The funny thing is despite how bright it looks, on a really sunny day you can see the tape from the other side of the foam .

That is the trouble with using white Depron Aero .

Took my Funbat to the slope yesterday but it needed a lot of elevator to keep it up. Would have been better if there was no motor,esc and just a flight pack up front to balance it

Funbat slope and powered flying at Maes Knoll (2 min 50 sec)

Andy

On request I am upload my original Funbat as a DXF file.

Thanks Bob, thats a great help!

With the Funbat having such a following, I am looking to build my own. I have been in conversation with “headlessagain” for his recommendations on a suitable sized version to accommodate a 2200mAh battery pack.

However it would be great to hear other people’s opinions on where the sweet spot is of this design, in terms of optimal wing size vs pack weight etc?

There are a ton of guys who are happy with the original design.

But here are a couple of other versions ...

There is a 30" version ...
StingBat - FunBat mod by Beemerdon
Plan here ...
https://www.rcgroups.com/forums/show...&postcount=331

Or the FB39 now layed out, for CNC cutitng, on Model Plane Foam
See pic below

And of course ;>} if you don't want to cut it out yourself ...
https://www.hoosiercutoutservice.com/planes/funbat.htm