good 2.5m+ sailplane - which one ?

[Brian]

No prob,,s John.

Brian

[Happy Days]

So Dennis, ……… the forum is awaiting your decision!

Which model are you going for, and what type of servos are you gonna fit in it? :?:

Keith

[DennisZ]

- Spirit Elite
- MG servos for flaps only

[Happy Days]

Well done Dennis! :clap:

I had an Elite. Built it from a kit. Flew on no more lift than a rabbits fart. It would float around for hours.

How will you launch it, bungee?  It would probably be a good model to tow, if you wanted to give that a try again in the summer.

K.

[DennisZ]

Thanks Keith,

thats is ARF, they tend to be bit heavier that built ones.

Bungee, yes ... if our Club will allow me  :?
I do have a plan to install proper tow release ... at some stage .

Dennis

[DennisZ]

So, my bird has arrived !
Actually, it arrived week ago, it took some time to get replacement servo http://www.leinster-model-flyer.org/wordpress/?p=275 .

Now, my 6ch radio does not have CROW braking mixing so idea is to configure ailerons as flaperons (channels 1 and 6) and have flaps on channel 5.
This will allow me to use throttle stick to move both ailerons up or down and have on-off flaps.
I may have to buy servo reverser for one of flaps or simply mount one servo "in reverse" .

Ok, back to the bird ...
there are couple of disappointing moments
- steel wing joiner is about 5 mm longer than it should be
- servo hatch covers are either completely of wrong size or the opening for servo arm was cut on a wrong side ... turned 90 degrees

Also my choice of servos was not very good - looks like aileron servos are about 2mm too thick.

Hopefully I'll manage to fix all that.

[Happy Days]

Hey Dennis Glad your plane has arrived. Allow me to tell you a little tale about using flaperons. :!:

The picture at the end of this posting is the fuse’ of a little mouldy I have. There are a total of 5 breakages’ along it’s length.

I couldn’t understand why this little Filip 400 would often come into land nicely, then suddenly drop one wing and cartwheel along the landing area, breaking the fuse with the inertia. :cry:  

Then I was then told about the effects of “Wash-in” and “Wash-out” at the wing tips. :?:

The end result was that instead of using the ailerons as flaperons when landing (Which increases Wash-In) I was told to make both ailerons move UP to become Spoilerons. This increases Wash-out which tends to stop the wing from tip stalling.

Result: Perfect landing every time! (Well………nearly perfect. Well,………..landings without damage, lets say that! :oops: )

You might want to bear this little story in mind



Oh, by the way. The Filip still flys, although not quite as well as it used to !!

Keith

[DennisZ]

Thanks Keith.

I was told to make both ailerons move UP to become Spoilerons. This increases Wash-out which tends to stop the wing from tip stalling.

That is exactly what I was going to do: flaps down, ailerons up = crow braking.

[DennisZ]

OK, it took me only 7 month to "build" ARTF model

have not flown yet

[billscottni]

Looks good Denis :clap:

[Happy Days]

Looking at the picture of the Elite on your floor Denis, it looks to me as though the wing is a polyhedral. Is that right? :?:

You’re going to enjoy flying this one,  if only because you’ll know in the back of your mind that you can slow her down for landing. :wink:

Hopefully we’ll see her up on the Big L soon, or at the September Glide-In?

K.

[DennisZ]

Looking at the picture of the Elite on your floor Denis, it looks to me as though the wing is a polyhedral. Is that right? :?:

Well, the spec says it is polyhedral . For me, the middle part of that wing is rather flat.

[DennisZ]

Well, she made the first flight at Killakee north slope this Saturday.
Flew fantastic need more practicing on landing skills .
(no footage of that).

Next day, with camera ready, we went to the Phoenix park.
With proper bungee - big thank to Peter.

Managed only few flights when guys with big motors arrived ...

[youtube]http://www.youtube.com/v/Kok-lnLyq8o[/youtube]
[youtube]http://www.youtube.com/v/3lOzND-Z0Uk[/youtube]
[youtube]http://www.youtube.com/v/24GjWmLw1R8[/youtube]
[youtube]http://www.youtube.com/v/BO_-_ICCUSA[/youtube]
[youtube]http://www.youtube.com/v/axTzPBvPM5A[/youtube]
[youtube]http://www.youtube.com/v/XZ4azfYvn0U[/youtube]
[youtube]http://www.youtube.com/v/YkUd-rKWh5c[/youtube]

[Happy Days]

The first launch was a bit of a surprise!!!. :lol:  

Don’t know if this is any use to you Dennis but when I had a bungee the instructions told me that the shock chord would extend to four times its contracted length. From what I saw on the vids I would have thought you could have stretched yours rather more, and so got greater height.

K.

[DennisZ]

The bird had lived short, but beautiful, life ...
reduced to pieces this weekend - nose dive to tarmac   :cry:  :cry:  :cry: