PE 100 is a real fun hack whether you want to fly it just as a sports model or as a trainer. It offers a docile performance with 3-function R/C using the Spektrum AR6400 or Parkzone PKZ3351 to control rudder, elevator and throttle via an external ESC, all from a single Lipo cell. The model would suit novice flyers either for outside use or indoors in a sports hall.

With a span of 18.5" (470mm) it's powered by a 2g brushless outrunner motor driving a GWS 2.5" prop supplied from a 200-240mAh Lipo although 130 and 70 mAh sizes have also been used. The integrated R/C module incorporates the RX and 2 servos and allows connection of a single cell 3A ESC. Flight times can be in the ~15+ minutes range and the all up weight is only around 28 grams. Construction is mainly depron with a balsa/depron fuselage and local balsa strengthening.

Two wing variants are detailed on the plan; a simple flat plate section and the curious Kline-Fogleman section KFm2 which is no more difficult to make, yet noticeably stiffer. If you haven't come across this before it's worth the experience. The wing is retained by a couple of small elastic bands to offer a little more crash resilience and allows for easy exchange between the wing types.

It's intriguing how well this model flies on only 5 watts of power and it truly deserves the accolade of being 'Whisper Quiet'. No one could ever complain that it's a noisy model. Don't expect PE 100 to be capable of aerobatics, although it does loop and can just be made to roll but it's not elegant! It's best just stooging around or intermittently powering to height and gliding back down, or doing touch and goes off a fine surface. If you have space to fly from your garden, try it.

The PE100 plan is annotated with building instructions and control setup. ESC connection instructions are provided for both AR6400 and PKZ3351 (Vapor module) receiver modules.

Developed from the earlier PE 400 which used a Speed 400 motor, this version uses a 2 or 3 cell LiPo and a CDROM motor. With a lighter construction, the weight came out at half of the original and the climb and performance benefits followed. Power on/off flights of over 50 minutes are easily obtained with thermal flights of over an hour.

Highly recommended as a simple to build and fly model and as an elementary trainer using a buddy box.

PE400 is a 32" span 15oz speed 400 model. Using a six cell 1100mAh nicad pack gives up to 14 minutes of flight - a 1200mAh 2S LiPo will give even longer duration. Rudder and elevator control allows for loops, rolls and stall turns. Makes for an excellent trainer or first electric model.