xtremeracing THREE DEE VELOCITY User manual

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THREE DEE VELOCITY
Mounting- and Operation Manual
Dismantling of the assembled TDR in preparation for the fitting of the
fuselage
•Hang out the rear ball link of the rudder control rod
•Remove the tail gear (only loose the screws which are screwed into the tail boom)
•Loose the screw of the tail support mount and remove the rear tail support including ball
•Remove the canopy spacer including rubber bump and replace it with socket cap screw M3x10
with flat washer
•Fix the tail support mount in 520mm distance from the rear tail boom clamping (equal to original
distance) on the tail boom with the M3x18, two flat washers and self-locking nut.
•Disassemble the landing gear

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•Remove all lower aluminium bolts.
•Revoe the rear canopy mount
Fuselage mounting
•To fix the fuselage to the table use two clamps and clamp the fuselage between them.
•Insert the mechanics with the tail boom first into the rear part of the fuselage. An EPP-block is
laminated into the rear part. This block has a gap for the tail boom and a gap for the control rod. If
the tail boom gets seized in the fuselage please move the mechanics with slightly pressure to the
back up and down respectively back and forth.
•Insert the mechanics as far as the holes of mechanics matches the holes of the fuselage. To fix
this position you can insert the long thread rod in the upper front mounting whole
•Next please check the holes in the rear. Through to the setting of the back lash of the front bevel
gears and fabrication tolerances in the length of the tail boom the exact bore position could not be
defined there is a long hole at the rear. If this still does not fit it has to be extended. In this case the
angular milled slots below and above have to be extended as well.
•Carry out fitting in the upper front with long thread rod, self-locking nuts and flat washers
•Carry out fitting in the lower front with M3x10 screws and flat washers. To secure them from inside
you can use either self-locking nuts or an aluminium bolt from the mechanics (you can use an
aluminium bolt from a middle position that is not essential)

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•Now you can fit the landing skid. Invert the mechanics for better accessability. You have to fix the
speed landing skid firstly on the rear side with the original aluminium bolt. Thereby you have to
bend open the landing skid parts slightly and screw them in from both sides until they are tight. If
necessary you have to lose them slightly so you can insert them into the front holes. Put each side
in the front through the hole in the fuselage and through the side frame and tighten them with M4
nut with thread lock. Because the acceleration during speed flight is not as high as during 3D you
can leave out one or two aluminium bolts as battery mount.

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Antenna installation
The CFK-fuselage shields the rc-radio. So it is indispensable to install the rx-antenne outside from the
fuse! To do so you can drill a small hole into the fuse and glue an antenna tube or the antenna itself
into the hole.
Retrofitting and assembling of the rear mechanics
Remove the rear fin. The two short screws hast o be replaced by M3x8. Thereby please use one flat
washer outside and two between fin and tail gear.
Assembling of the tail gear: fix the tail rotor control arm with cylinder head screw M3x24 and the rear
fin with the aluminium bush with cylinder head screw M3x18. Please ensure that you fix both screws
with thread lock and screw them firmly.
Put on the front hood
Pull the front hood similar to the original TDR front hood over the front area and over the wobble plate.
Thereby it is helpfully when the wobble plate is completely at the bottom (complete negative pitch) and
the linkage rod is behind and in front of the main shaft and not on the side.
During the last centimeters you should first insert the lower bolt into the corresponding borehole of the
fuselage and then put the upper end of the hood to the fuselage. Finally insert the upper bolts.
Through to the magnets the hood downright clicks onto the fuselage.
It may happen that at an extremely pitch angle generate vibrations which can loosen the hood.
Therefore I recommend to fix the hood on the upper side with a 3 cm long adhesive tape.
Operation
Its highly recommended to check the mounting screws after every flight. If they are tight after the first
flights you can tape the mounting holes with the supplied round stickers.
Since the fuselage can not replace the tail support completely please avoid hectically maneuvers in
flight like pitch pumps. In extreme cases this could bend the tail boom which leads to an unbalanced
running torque tube. This in turn causes strong vibrations which can lead up to destruction of the
fuselage in the air. This scenario has been activated during the test phase by very high rpm and
extreme pitch pumps.
Thank you Ivan for the english translation!