TRAINSTAR 1400 - TAIL SUPPORT

thingiverse

TRAINSTAR 1400 - TAIL SUPPORT Tail support designed to fix the tail of the "old" Trainstar 1400 (now renamed to Trainstar Tough to be distinguished from the new Trainstar Ascent). Why? I've been flying this old Trainstar for around 4 years now, and even knowing it is a tough design, it is not indestructible. After the first 6 months, this Trainstar needed to be re-trimmed anytime it went up in the air. It took some time to realize the EPO stabilizer started to 'move' in flight, even re-tightening the screws that fix the binding support to the airframe. - - - This support will allow you to fix the stab without needing to glue it directly to the fuselage. There is 3 STLs in this rep. Use the one you feel most comfortable with: - 4P was the original design. I've been using it all this time with only 2 screws ... (see pictures) - 2P is a 4P with only 2 fixing points. Go for this one, it makes a good job. - SLIMMED is nothing but a lighter 2P. This one was successfully tested during november 2021. I used PLA to ensure a better fitting since there is nearly no material shrinking. ABS would probably better since it is lighter (but it needs a previous test print). Use correct hot-end temperatures: avoid 'cold' printing, otherwise you risk layer cracking. How to: You will need to work a little bit on your horizontal stabilizer, inserting a wooden strip. 10 x 10 x 100 mm is OK. What wood to use? Use light wood, like samba or hard balsa. Avoid harder ones, since you will have to sand the strip. How? Use a sharp cutter to cut out the part to be replaced by the wooden strip. Make clean cuts. Glue the strip into the stab and clean the residual glue with a wet tissue. Use common wood glue. Take good care NOT to use glues that dissolve EPO!! Once dried, drill two 3 mm holes matching the fixing points of your print (they shoud be on the strip's center line). This really is an easy job. The printing is easy as well. You only have to 'find' the correct location in your H stab to place the strip. In my case it was touching the carbon fiber rod, so I used this as my reference ... I don't know whether Volantex designed/produced different stabilizers. So ... print first, then take measures and finally you can start to cut EPO & place the strip. Just proceed to 'click' this support onto the airframe. You really have to feel it fits snugly, with no play. Afterwards you can mount H & V stabs. You will need: 1 x Strip 10 x 10 x 100 mm (suggested dimensions) 2 x M3 Screws 20 mm 2 x M3 Locking nuts 4 x Washers 2 x Rubber gaskets. You can use 2 small O-rings or make them yourself cutting out two pieces of an old rubber tube. NOTE: I don’t want to advertise, just avoid any trouble with copyrights. These pictures were taken from www.volantexrc.eu