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The control surfaces on an Ultra Flash are powerful. Depending on your preferred control
feeling, the aileron movements below can be safely reduced by 2mm.
Aileron movement: 12mm up and 14mm down- Expo 30-40%. Elevators: 15mm up and
16mm down - Expo 40-50%, Rudder: 45-50mm each way 30-35% Expo. Measured at the
Aileron/Elevator tip joint. Rudder travel at the lowest trailing edge point.
The flap settings for the Ultra Flash Evo are:
Take off 25-28mm (1-1 1/8"). Landing 95-100mm (3 ¾" to 4") both figures measured at
the root, trailing edge of each flap. The landing flap setting creates maximum drag and
rapid deceleration with no power, some pilots reduce this figure to 85mm (3 3/8") and
also add a few mm of CROW 3-4mm, though it is not really needed.
The Ultra Flash requires down elevator with flap. Take off flap setting 1.5mm down
elevator and Landing 4.5-5mm, measured at the elevator trailing edge tip. Exact figures
will be affected by balance position. Slow the flap and elevator compensation in your
radio flap system slightly to smooth the transition.
We hope you have years of pleasure from flying your Ultra Flash Evo. Questions on
assembly can be answered by contacting your chosen Rep or emailing
info@carf-
models.com.
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