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Article and flight video by Andrew Griffith
This sailplane is ready for fun or competition.
Full review on page 61 in the August 2013 issue of Model Aviation and the app.


SPECIFICATIONS
Model type: Sailplane or electric sailplane
Skill level: Intermediate builder; intermediate pilot
Wingspan: 114 inches
Wing area: 1,030 square inches
Wing loading: 10 ounces per square foot
Airfoil: Semisymmetrical (SD3021)
Length: 58.5 inches
Weight: 4 pounds, 8 ounces
Power system: None or 25 to 52 electric
Radio: Six-channel minimum (seven channels with glider programming recommended)
Construction: Built-up wood wings and tail; fiberglass fuselage
Covering/finish: UltraCote
Street price: $369.95

TEST-MODEL DETAILS
Motor/engine used: E-flite Power 25BL outrunner
Battery: E-flite 3S 11.1-volt, 3,200 mAh 30 LiPo
Propeller: 14 x 8 folding
Radio system: JR 11X 2.4 GHz DSMX radio; AR7010 receiver; four Spektrum A7020 servos; two Spektrum A4020 servos
Ready-to-fly weight: 4 pounds, 8 ounces
Flight duration: Varies with skill and weather conditions

Pluses:
• Fiberglass fuselage.
• Attractive translucent UltraCote covering on wings and tail.
• Diverse flight envelope.
• Perfect transition airplane for the many Radian and Radian Pro pilots looking to move to the next level.
• Can be built as an electric launch or in a pure sailplane configuration.

Minuses:
• Manual has several problems and omissions.
• Serious slop in elevator and rudder pushrods.





[All flight photos taken at the Radio Control Club of Jacksonville FL field.]




The E-flite Power Meter shows the system pulling nearly 450 watts at 39 amps at full throttle with a fresh battery.







The transparent red-and-yellow color scheme presents well against the blue Florida sky. The colors are easy to see against clouds.







The Spektrum digital servos were installed using RTL Fasteners hex-head servo screws.







The E-flite Power 25 BL motor is installed in the business end of the Mystique. Ensure that the wires can’t rub the motor while it is rotating.







The top-mounted flap linkage gives maximum mechanical advantage to prevent surface blowback during flight. The author slightly notched the TE to get more flap travel.







The Mystique is a nicely constructed, open-class sailplane that would be competitive in ALES or LMR events.




4 comments

The Mystique has all the flight characteristics, design innovations and quality of construction to become the "Hobie Hawk" of our generation. Due to the power of mass marketing and availability of product, the Mystique could re-energize an interest in thermal r/c sailplane modeling. The Hobie Hawk created a sensation in the early 1970's because of its beautiful curved wing, fiberglass body and Obechi-covered flying surfaces. It was pricey, unlike the Mystique which is affordable. The Hobie relied on a Hi-Start to get aloft, which is much more work, and requires more flying site space than the electrified Mystique. And, the Mystique gives the pilot a 2nd and 3rd chance to climb to altitude again and go sniffing for thermals. If you have never tried flying an r/c aircraft that depends on thermal and/or slope uplifting winds, you have missed out on an exhilarating experience. I do not own a Mystique (yet), but after reading the article and watching it in flight, I am ready to buy one and join the eagles searching for thermal activity.

This article on the Mystique 2.9 doesn't include
the KV on the motor used. There are three
different E-Flite power 25 motors.
Please let me know which one was used here.

Power 25 Brushless Outrunner Motor, 870Kv [EFLM4025A]

I know this thread is old but if you haven't gotten a reply the motor is 870Kv (EFLM4025A)

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