Carf-Models AT-6 Texan Instruction Manual

CARF-Models AT-6 "Texan"
Instruction Manual
First Draft
Quick Guide for the important steps of installing landing gear, RC and engine
Thanks for purchasing our AT-6 "Texan" It is the latest of our line of warbirds and we are sure it is
the most advanced in terms of prefabrication and attention to detail. However, there is still some
important information for the installation of equipment. Unfortunately the instruction manual is
always very hard work and is falling short, coming late, for the first kits delivered, so we
appreciate your patience and at the same time apologize that this is maybe shorter and briefer
than you wish for. However, we are sure that all necessary important information are given here
and if you seriously follow these advises, you will successfully build and maiden this airplane.
We will add photos to the paragraphs as soon as they become available and get sorted. But even
without, it will be no problem to complete the building and installation steps. If you have shot a
few photos of your build, we would be grateful to have a look at it and maybe use them to
enhance this manual step by step.
1) Landing Gear Installation
Lets start with the main gear. There are a few things to watch, especially with the first kits
delivered, because the main spar, which alignment is critical for the installation of the gear, might
not have that precise angle you are looking for, it was a huge challenge to get this perfectly set in
production. However, it is easy to adjust and align your gear if you follow the advice below.
First lets cycle the gear with a 1 cell LiPo (or an old 4-5 cell NiCd). Create an adapter cable. You
simply reverse polarity to retract or extend. We do not recommend to use the operational voltage
of 2S LiPo because if you are not VERY careful in the end positions of the gear, you might burn
the motors and we do not warrant burnt motors at that stage. Without the Gear Controller there is
no automatic power shut off at the end positions.
You must disconnect the battery right when the gear arrives in its mechanical end position.
Now, before you install the gear, you must grease all moving parts. Use a white grease from the
spray can. There are a lot of moving parts with large surfaces in this gear. Only if it is well greased
it will operate reliably over a long period of time. So please grease all moving parts thoroughly
before you install it. Do it now, so that you won't forget to do it later. Also make sure that the
strut torque rod is slightly clamped in the trunnion of the gear unit, not to hard, so that you can
adjust it manually, and not too soft so that it won't change by itself.
Next is an important technical information about geometry: In pilot's view, the AT-6 gear axis of
rotation must be pointing 5 degrees out (away from the fuselage) and 5 degree down. Then all the
angles are perfect and the strut and wheel will be in the right position retracted and extended.
Please verify that your gear mount has the wood block spacer on the rear horizontal wood. It is a
9-12 mm plywood block, approx 3" x 1/2" x 1/2" (8 x 1,2 x 1,2 cm). It might also be in your
hardware package, if it isn't please be prepared to make one or contact us.
Slide the gear into the mount. Make sure you find a way to align the gear flush to the main spar.
Use clamps and make sure that whatever you do next, the gear is ALWAYS aligned to the main
spar and all modifications of attitude have to be in relation to this main spar. This is very important
during the test fitting of the wheel in the wheel well.