cburg

Static Thrust Competition at ROTR

Last updated by Admin Comments (3)

Categories: Trike Talk, Tech, Equipment

Rotax Rick should be happy to hear his 670 engine with a 7” smaller prop…matched the significantly more expensive 914, and spanked the twice as heavy Sub 2.2.

Western Rotorcraft 5 July, 2013

Number     Aircraft     Engine        Prop                Dia.       Blades    Thrust       ISA Notes:

N501AG    Calidus       Rotax 914     HTC                   69”        3           380 490        (UL)

                Vancraft      Rotax 503      Ivo                   59”        2           180 232       With air cleaners (UL)

                Vancraft      Rotax 503      Ivo                   59”        2           215 277      Air cleaners removed

N920CC   Monarch      Rotax 670      Powerfin            68”        3           340 438      670 by Rotax Rick

N39GB     Vortex         Rotax 670     Sport Copter     68”        3           370 477      670 by Rotax Rick

N541KP   (PPC)           Rotax 670      Warp Drive       62”        4            380 490     670 by Custom Pipes

N4242S   RAF 2000    Subaru 2.2     Warp Drive        68”         3           330 425

Comments

  • cburg

    The left number was at 6,500' and the right number was calculated to what it would have been at sea level.

  • XC Triker

    Sweet, I had been interested in these numbers.  Hard to get an exact feel for which prop configuration gives best thrust as there are too many variables changed between them.  How much do you think the fuselage in front changes airflow to the prop (static or in the air)?

  • cburg

    Here are some good prop comparisons:

    http://www.stolspeed.com/id/62

    Static only tells part of the story...mainly important for short ground roll and low speed, like with an airboat, hovercraft, or PCC. Less so with airplanes and fast trikes.