TBM DV8R, Manual

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1) Retractable landing gear with valve, air tank, air lines, servo, etc. The bottom of the wing is
ready to accept the landing offered by TBM. This gear is of trailing link design for shock
absorbing. This design is great for grass runways, or for cushioning a hard landing.
2) Brakes, brake valve, servo, air lines, air tank, etc.
a. For the brakes and retracts we suggest that you purchase 3 different colored air lines to
keep things organized. We suggest 1/8” or 3mm line. Either of these lines work well with
Festo 3mm fittings.
b. Purchase 6 of the Festo 3mm bulkhead fittings. These go through the bulkhead in front
of the wing. The holes are there already. This then gives you quick disconnects for all 6
lines when you remove the center section of the wing from the fuselage.
3) Wheels
4) radio system. If you use a separate channel for each servo/function you need 12 channels: 2-
ailerons, 2-flaps, 2-elevators, 2-rudder, throttle, brakes, nosewheel steering, retracts. You can
use up to 5 Y-harnesses to reduce the number of channels though you will need to program
the servos to work properly because of end point adjustments and all but the ailerons must
have one of the two servos reversed.
a. nosewheel steering, 2 rudders (use 2 Y-harnesses)
b. ailerons
c. flaps
d. elevators
5) 9 analog 150 oz metal gear servos for flaps, ailerons, nosewheel steering, rudders and
elevators, or better. Digital servos are best if you fly at high speed. High torque and high
precision are more important than high speed.
6) 8 metal servo arms ½”-1” long. Use the shortest arm/hole possible to offer the best mechanical
advantage. SWB have 4 holes drilled and tapped for 4-40 screws, so they are the easiest to
use. The photo shows the SWB 1” arm using the inner hole.