RCU Forums - View Single Post - New CA models Epsilon build (easy as pie)
Old 08-19-2004 | 08:21 AM
  #101  
Red B.
Senior Member
 
Joined: Aug 2002
Posts: 1,301
Likes: 0
Received 0 Likes on 0 Posts
From: Jonkoping, SWEDEN
Default RE: New CA models Epsilon build (easy as pie)

Hi!
I received my Epsilon kit yesterday and I am pleased with its content. Here are some first impressions:
Later on, I will post some pictures.

The kit is delivered in a sturdy brown cardboard box filled with ripped newspaper to keep parts separated and to protect them from transport damage. There are three lite-ply sheets and one balsa sheet filled with laser cut parts. These parts seem to be of very high quality. It is obvious that the designers have tried to keep the aircraft weight down as there are many lightening holes in formers and fuselage sides.

The wing panels, stab and fin are supplied as balsa sheeted foam cores. All parts are very light and seem accurate in shape. Ailerons, elevators and fin has to be cut and in order to guide the cutting there are lines drawn on all parts. The wings have precut channels in the foam cores for servo leads and also for the plywood wing joiner. The servo wells are not precut. Since different people will use different servos I think this is a good thing. The front and rear turtle deck are also balsa covered foam, again accurately made and very light.

There is one thing that I don't like about my wing panels. They are sheeted differently. One panel is sheeted in the usual fashion with the grain of the balsa wood running span-vise. On the other panel however, the balsa sheeting has been glued together so that on the front part of the wing the grain is parallel to the leading edge, whereas on the rear part of the wing the grain is parallel to the trailing edge. I do not think it will matter but I would have preferred to have both panels sheeted in the same way.

The balsa supplied for leading and trailing edges are of light, uniform quality, balsa. The trailing edges are pre-bevelled but the leading edges have to be planed to shape. Balsa for sheeting the bottom of the fuselage is supplied already edge joined so that it can be applied in a cross-grain fashion. This balsa is of average quality and although the glue joints are good the thickness of the joined sheets varies somewhat, necessitating some extra sanding.

The cowl is gel-coated fiberglass of good, but not top-notch, quality. A coat of primer or two followed by sanding is probably needed to hide the structure of the fiberglass weave.

The landing gear is a simple pre-bent and pre-drilled two piece Dural affair, nothing fancy but it should work.

The canopy is of good quality but not crystal clear. I think I will choose to paint mine on the inside.

Apart from some small balsa parts, some dowel, a piece of plastic pipe and the building instruction that's about it. No hardware whatsoever is supplied. Again a good choice I would say. People building this kind of aircraft will have their own preferences when it comes to hardware and usually end up replacing most of the hardware supplied with other kits.

Unfortunately, in my kit, the wheel pants and the dowel for mounting the wing were missing. I have contacted my dealer and they have promised to send the parts right away. I hope they keep their promise.

The building instructions are the same as the one that can be found on the CA Model web page. The pictures are rather poor quality but there should be enough information for building this aircraft.

I have thought about what engine and servos to use and have decided not to use a 2-stroke engine as originally planned. Instead I will purchase a Saito 100. I measured the cowl and found that when mounted inverted the rocker covers of the engine will protrude about 1/2 in. below the bottom of the cowl. Servos will be Hitec 5745 digital servos. In order to keep the aircraft as light as possible I will use pull-pull linkages for both elevators and rudder.

I have a question for you guys who have already built and flown this aircraft:
All the servos are supposed to be mounted with their long side perpendicular to the fuselage datum line. I feel a little bit uneasy about this and would like to mount them in the usual fashion, i.e. long side of servos parallel to the fuselage datum line. Any thoughts about this?

/Red B.