BOP Challenger is a great flying old time rubber powered airplane! 

Yeah I've gotten a lot of data from reading back issues of Chinn's engine reviews. Apparently he was a prolific rubber power designer back in the 1940s and 50s.

Lol! It's what I've got...this plane definitely needs more space. A real powerhouse.

Glad to do it! Been a tough few weeks with the laser failure but we should be back in action soon.

Good questions! On electric conversions you have pretty small propellers, by comparison, so the destabilizing effects are reduced, however you still have all that stuff way out on the nose instead of distributed through the fuselage. I think a short-nosed Gollywock would look...odd...but from a performance perspective, it's definitely a better solution. This is also why electric conversions of old-time gas models work so well.

@@joshuawfinn Thank you, Josh. I appreciate that you took the time to answer my questions. I agree that the classic, old rubber models would look a bit "odd" with shorter noses and that gas models with already short noses are easier conversions to electric. Still, those rubber models perform so well and are so graceful in the air. I’m thinking of converting a Gollywock and a Gypsy. Some time ago, I did a gas-to-electric-R/C conversion on a 2 - metre Lanzo Bomber, and it is the best flying and performing sailplane I have ever had. Just after completing the conversion and test-flying it a few times (and marveling at its performance and how incredibly beautiful it looks in the air), I brought it to my old club's limited-time climb/duration contest and won it with little trouble (or, I should say, the Bomber won it). The old girl climbed nearly vertically out of my hand and just hung there at altitude like a kite until it was time to bring her down for a touchdown at the appointed moment. I used the old “simulated D/T” method to descend quickly, i.e., full up-elevator) I had to stretch my time by a 30 seconds or so, and I did this by S-turning just above some trees at the end of the landing area that provided enough lift to keep her from sinking. That really popped a few eyes you can be sure. Most of the others had brought sleek, modern sailplanes with spoilers and flaps and all, and they scoffed at what looked to them to be a crude, '30s relic. However, they stopped laughing when they saw it fly. I made a few converts to the older stuff that day. Thanks again, Josh.

I really want to know if it's the same PF Chinn and what other designs he produced. It's an incredibly complex design but it's truly a great airplane.

Yeah they all do look to have similar design traits, does appear to be the same Peter Chinn as the famed engine review man. Absolute legend of a man.

They get off the table just fine provide you supply plenty of power.

Definitely

The bug I've got on it is a Chinese built unit on thr 216 mhz band for use with Walston receivers. I do sell 460 mhz FRS band beacons from BMK which work with Baofeng receivers, which I also carry, but you will have to source your own yagi antenna.