Sounds like it should work.  You will likely need more pitch an yes, a prop saver mount will work for all 1\2a props just fine.  Double up and use 2 O-rings if you are worried.  A solid collet type mount is best.  To get the COG in the right spot the battery will likely end up as far forward on the nose as possible.  If you find the performance a little underwhelming you can always spice it up by going to a 3S battery.

The Brodak 1\2a timer has no adjustments, just flat out, full throttle for whatever time (3 minutes?).  How old are your kids?  Would they be interested in programming their own full function timer?  A nice little techy project for them - https://circuitflyer.com.

Build it light and make sure the elevator hinge is real loose and floppy.

I've built a few 1\2e planes.  I also converted one of the Flight Test Mighty mini foam board planes to control line.  You can build one of those in an afternoon if you want.  Foam board is not as durable, but for $15 bucks what the heck.

Paul

About a year ago, I built a copy of Igor Burger’s indoor Max Bee using Dollar Tree foam board. It was powered by a very similar electric Powertrain as you describe: 1700 kV motor, 2s battery, GWS 6-3 prop. We could not find Depron at the time, and the plane came out heavier than I’d wanted (4.6 oz with landing gear, this is airframe only, no motor no battery). It was ok for teaching my 11-yr old normal and inverted flight, but too heavy for stunt. If we find some time, I plan to build my own design, lighter and with more lift (some airfoil instead of plank wing).
Hopefully this gives you some ideas. I’m not sure that traditional 1/2a designs translate well into electrics.

Hi Tony,

I've done a lot of experimenting with 1/2A electric models and there are a few ways to make them fly as well as the old Babe Bee. It also depends on what model you want to build because prop clearance becomes an issue on models with wheels. I use motors that weigh around 30 grams with a Kv of 1900 to 2000 turning an APC 6 x 5.5 E prop for models like the Carl Goldberg 1/2A's. If you want a combat wing like the Lil Satan etc. then you can use a lower Kv motor around 1500 or maybe your 1700 motor will work, on an APC 7 x 5 E prop. Having flown both small and larger props, I did not notice any worthwhile difference, and I love the old 1/2 models like the Stuntman, Jumping Bean etc. I have small Ringmasters as well. Just btw, make the nose a little longer on the old 1/2A designs. My Sparky is really twitchy! The 2S 450 mAh lipo goes into the outer wing.

I've added some pics of my Baby Sparky that I made a few years ago, and it has a 1900 Kv motor, 12A esc (10A is fine), 6 x 5.5 prop. I used one of my own KR Governor timers (obviously  ) and I initially thought that this was a bit of an overkill so I figured out a much simpler version to make it cheaper. No programming, just switch on and fly something like a Babe Bee. Then it struck me that it is not that much cheaper in the long run because this governor timer can be used in a bigger model when customers want a bigger model were the governor can be utilized better. The motor shut-down feature when you hit the deck is also a plus and the constant speed of a governor just flies models so much better, so I stuck with what I have. (maybe I'm just too lazy to build another version??)

Keith R

Hi Wolfgang,

I did not actually draw a comprehensive plan. It was just a quick project to test my 1/2A power package. The wing is just a rough cut foam wing and covered in medium weight tissue and white wood glue mixed with water. I improved the plan quickly in Inkscape so here it is in pdf format. If you use Inkscape then I can send it in svg format. I did take some photo's when I built it for my own records, so here are a few. Oh....jut btw, I drew the nose longer while I was doing this. The short spars in the wing and the battery box are 1.5 mm balsa. Ask questions if you need more info.

Keith R

Here are some of the inner wing hollowed out, and with the bellcrank fitted. It's rough like I told you! The bellcrank unit is just glued into the foam with white wood glue.

I did not actually draw a comprehensive plan. It was just a quick project to test my 1/2A power package. The wing is just a rough cut foam wing and covered in medium weight tissue and white wood glue mixed with water. I improved the plan quickly in Inkscape so here it is in pdf format.

Keith, is this pdf file somewhere?
Regards,

Wolfgang

Tony,
Here is picture of electronics on Yak - 54

Jerry

And here is the picture of the bottom side of Yak-54. Adjustable leadouts, bellcrank is made of two sheets 1/64 ply epoxied as sandwich .

Jerry

Dose anybody sell 1/2A foam wing sets?  Looks like a fun project.

Tony,
I built Dualsky Yak-54 as indoor control line.
Weight ready to fly with 2 cell 450 mah battery - 5 oz

Jerry

I assume it was an R/C kit? Can you measure the thickness of the Depron used there?

Kit components

Jerry