Showing posts from May, 2016

Flying the Weasel TREK !

The maiden flight happened on a south slope by a sunny weather, but when I arrived at the top, the wind was more from west, and very weak. I moved to the west side of the slope where the slope angle is almost flat. Anyway, I could test the Weasel in pure thermal flight conditions and have been very positively suprised. From the first launch, she flew like a charm, no trim needed, recommended settings are perfect. Despite the light weight of 290gr, she has a better lift-to-drag ratio and penetrates better thanks to the combination of the light weight and lower camber of the airfoil, so I could fly very far, transition from one thermal to another very easily, cover lot of distance, like I was piloting a larger sailplane. During the afternoon, I did some very good gain of altitude starting from very low and finishing at 100 to 150m few minutes after. It is true that weasel is desmontrative and indicate clearly the lift which make the thermal hunting easier. In addition, the finger hole …

Weasel TREK: Light speed assembly !

In fact we cannot really talk about assembly as it takes 25 minutes to have it ready, no glue is needed. This is faster than some RTF kit.

The work consists mainly in

installing the 2 servos in their location, servo arm at the neutral position. I use some UHU glue to secure, but this is not necessary, there are 2 transparent tape pieces to cover and maintain in place the servos.route the servo wires to the radio compartimenttape the velcro on the nose and on the battery to secure itinstall the plastic clevises on the control rods.install the 2 screws on the joiner lock system (same as the Alula TREK)No lead needed in the nose for the CG balancing, I even had to move back the battery by 5mm.
If you want some colors, acrylic paint in spray will do it easily. I used some masking paper tape. This is clearly longer than the assembly itself, but she deserves it !

On the balance, she weights 290grs vs the 330grs of the Weasel Black Edition. Additional ballast is about 50gr, perfectly centere…

Weasel TREK: Kit Overview

I just received one of the very first kit of the Weasel TREK. She arrived in a very nice orange box, that will be much more convenient to carry it.
This new weasel seems very similar in term of planform, but probably has different airfoils. The visible differences are:

Elevons are moulded, not balsa. they seems stiff enough when I manipulate them.Like the Alula TREK, she has a canopy giving a full access to the radio compartiment and a plastic landing skid to protect the underside of the nose. the canopy is maintained in place by several magnets.The spar is no more integrated during the moulding, but added/glued after.The locking system is the same than the Alula TREK, and the joiner too.The skid integrate a ballast compartiment able to receive 50g of lead. It also keep the finger recess for better launchingThe fin is secured with a magnet.

In term of construction, spars, control horns, magnets, skid are all in place, which means a speedy assembly, around 30 minutes like the Alula TRE…