ParkZone F-27B Stryker

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PKZ1200-450.jpg
Owner-modified Stryker with Multiplex FunJET decals

The ParkZone™ F-27B Stryker is an electric-powered, high-performance RTF delta wing foam aircraft designed and distributed by ParkZone, a division of Horizon Hobby.

This fully aerobatic model, introduced in August 2005, is an updated version of the F-27 Stryker, a part of ParkZone's original model lineup.

The original Stryker proved to be popular with those wishing to create high-performance delta wings to the point where many modelers simply purchased the off-the-shelf replacement airframe parts with the intention of adding their own electronics. It is not uncommon for a modified Stryker to reach speeds of 100 mph (160km/h). Horizon Hobby responded by creating a vastly improved RTF model right out of the box as well as an available factory-assembled ARF sold with the new improvements but less electronics.

Improvements include a one-piece "Z-Foam" wing which can be repaired with any cyanoacrylate adhesive, a propeller suitable for use with lithium polymer batteries, vented battery and electronics compartments and strengthened elevon hinges. Dual-rate control throws, switchable during flight at the transmitter, allow for either relaxed or aggressive flight. Proper voltage cutoff for lithium polymer use is accomplished by simply removing a jumper on the receiver's printed circuit board.

Like all ParkZone models, the F-27B Stryker comes almost fully assembled and with all necessary equipment, including transmitter batteries. Horizon's optional Sonic Combat Module™ (HBZ4020) allows dogfighting between similarly equipped aircraft via the receiver's "X-Port" feature.

A new variant was introduced in June 2006. Dubbed the F-27C Stryker, it comes factory equipped with an E-flite brushless motor system and lithium polymer battery. Top speed is drastically increased to approximately 80 mph (130 km/h).

Flight report

The stock Stryker flies about as fast as the HobbyZone Aerobird Extreme and is a suitable upgrade after mastering a three-channel plane. It needs a fairly hefty throw to launch, so it's a good idea to have someone else do the first few launches. On low rates it flies smoothly and predictably but you need plenty of time to do a roll. On high rates loops are tighter and the roll rate is quick but not too quick taking perhaps one second for a complete roll.

The stall is very soft, although the Stryker will eventually spin if you keep the stick pulled back. Releasing the stick is all that is required to recover from the spin. Landing is easy, as it glides well.

The stock grey camouflage is not a good colour to see against an overcast sky, especially towards dusk. It's easy to lose orientation as a result but some day-glo tape is an easy solution.

See also: Multiplex FunJET

Specifications

  • Wingspan: 37" (950mm)
  • Length: 27" (700mm)
  • Flying weight: 21 ounces (580g)
  • Motor: Direct drive 480 with flux focus ring, pusher configuration
  • Radio system: Three-channel proportional FM
  • Operating range: 2500' (762m)
  • Operating frequencies: All six allocated to the 27 MHz band
  • Trim scheme: Grey fuselage, grey/olive drab/black camouflage, black/grey decals
  • Speed control: Fully propotional ESC/receiver combination
  • Battery: Seven-cell 8.4V 900mAh Ni-MH (included); 2100mAh 3S lithium polymer optional
  • Charger: 1.2A variable rate DC peak detect
  • Landing gear: None
  • Retail price: US$199.99
  • Catalog number: PKZ1200

F-27C specifications

  • Motor: 1880Kv direct drive brushless
  • ESC: E-flite 25A brushless
  • Battery: Three-cell 11.1V 2200mAh lithium polymer
  • Charger: Two- to three-cell li-po DC variable rate with balancing
  • Radio: 72MHz FM with industry-standard three-wire servos
  • Trim scheme: "Tiger Meet" custom paint and decals
  • Catalog number: PKZ4200

External link and reference