Shastas Rocket Site
QCR

Ultimate II

QCR Model #100

Description

If you like helicopter rockets as much as I do, you’ve just walked into Heaven! QCR’s Ultimate family of rockets represents Ken Brown’s latest thinking on whirlybird design. The “Spinning Hub” idea used for these models improves on the simpler “Rotaroc” design, to arrive at a superior flying machine. In the “Rotaroc” design, the whole rocket rotates in the air while descending. However, in the Ultimate models, the rocket airframe is intended to stay still while the rotors spin.

As with most things in life, there is a price to pay for this quantum increase in performance. These models come with a skill level rating of 4. They are intended for experienced modelers only. In exchange for the increased building complexity, you will experience arrow-straight upward flights and seemingly unending recovery phases. These guys just hang up there! In truth, these rockets would be just as happy competing in the next NARAM as they would be flying in the nearby field next Sunday afternoon!

Ultimate II (18mm airframe) is a 3x upscale of the Ultimate I in terms of rotor area and 2.6x upscale in terms of weight. This makes for a much bigger rocket, but more importantly, it improves the ratio of rotor area to body weight, relative to that of the Ultimate I. Hang times of up to 120 seconds in dead calm conditions can be expected on a C engine. Catch a thermal and … well, you get the picture!

Additional Information

  • Length: 23-9/16″
  • Diameter: 0.736″
  • Weight: 1.3 oz.
  • Rotor: 1/8″ x 1-1/2″ x 18″
  • Recommended Motors:
    • B4-2, C6-3

Instructions

Photo Gallery

Build History

  • 09/23/2008 – Purchased QCR Ulitmate II from QCR for $15.00 (Retail – $15.00).

Flights

DateLocation#MotorComments

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