Which EDF model for a learner?

[Ron]

No oneupmanship on the VT unit. In fact with my flying it will be ondownmanship.
But then... I thought.... I'd rather break it by flying it into the ground than falling over on it  :twisted:  :twisted:

Yes, bread and cheese will be a good month. It's usually weevily biscuits and brackish water. :lol:

I'm all in favour of creases and blemishes.
(I have to be or I'd be permanently depressed)

Aidan: Those batteries look good.
Never used Hobbyking before, so might order one just to see what happens.
(There goes the cheese, only the bread left :cry: )

Ron

[Ron]

Keith: Just one more thing before they come to take me away...
What sort of servos does it need?
There's talk of quick response ones and all that, but not being up on modern servos I've no idea what that means. :oops:

Ron

[Happy Days]

Hhmmmmm, must confess Ron I don’t know what a quick response servo is, :?:  other than to assume it’s function simply by it’s title.

The servos I put in my Squall were just some that I found while rummaging through a box of used/still working ones.
I’m pretty sure that for the ailerons (sorry elevons) I used a couple of HS65MG’s. (I tend to use a lot of those in my gliders.)
I can’t remember what type I used for the rudder, I seem to recall is was a rather smaller one. Unfortunately they are all imbedded into the fabric of the airframe and can’t be seen now. :!:

I don’t think it’s critical Ron, and for my flying skills and reaction times, (and if I may make so bold an assumption, probably for your’s as well, :oops: ) I don’t think “Quick Response” servos would be necessary.

If you’ve got some servos that ‘fit in the holes’ try them but only stick them in with a light gluing. If they work okay, secure them more thoroughly, or replace them if they’re no good for the task.

Best advise I can offer I’m afraid

K.

[Richard Boyd]

Try this video Ron !
My friend Derk with his F16 !!!!!!!!

http://airtoimedia.nl/web/upload/vdVechten/F-16%20hA.wmv

Emax ES08MA metal geared servos is what we used in ours !
£6 odd per servo from expressfly , and they take abit of beating.
Mine even had a dip in the Altantic Ocean during a display at the Portrush Airshow lol.


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[Ron]

Thanks Keith.
Yes I think a quick response brain might be a better priority  :oops:

Ron

[Ron]

Thanks Richard.
That vid is brilliant, especially the angle of attack of the wings during the slow passes.
They must be stalled and using the 'barn door' effect to keep flying.

I was wondering about waterproofing
Not least because it's been ground level cloud here these last few days.

I'll have a look at those servos.

Ron

[Richard Boyd]

Hi Gentlemen, one word of warning !
Derk is a world class pilot both in jets /F3A /F6B/F3P !
soon it will be the real jets he will fly !
My Dad (aged 80) flys his F16 it a pussy cat !
Just watch the elevons on tuffs of grass lol

Richard

[Ron]

Just watched that video again.
As always, an expert makes it look easy.
Point taken.

Ron

[Happy Days]

I can fly like Derk…………….well,….in my dreams I can! :lol:

Here she is , back in the air again.

The misses took the picture. Said she wasn’t very impressed with my flying, the model kept going past her camera too quickly.
(I don’t think the cattle were very impressed either. )

Keith

[Ron]

Looks good Keith.
It's the fast plane, slow camera syndrome  

I used to know a photographer once (cough years ago - yawn) who specialised in formula one. Used to stand by the track on a corner and swing with the car to get the shot.
(Shows how many years ago this was that he was allowed to stand on a corner)
One day he was laid up with 'flu' but thought he'd get some shots from the grand prix on the tele.
Every time a car came past he couldn't stop himself swinging the camera.... :lol:  :lol:  :!:

Ron

[Happy Days]

Couldn’t resist having a go at Derk’s low flying at a  high angle of attack stunt.  (As in the video)

Even with loads of concentration I failed.  The plane stalled,……… and snapped off the nose.
(Two minutes with a spot of glue and all back together again .) But the experience raised some interesting questions in my mind.

Firstly I didn’t really think I’d be able to do it. I’ve less than an hour flying time on jets. Derk, I’m told, has had a lifetime.

Now I know a ‘Bad workman always blames his tools’ but I’m wondering if the Squall is actually capable of doing the same stunt as Derk did. :?:  It can fly at a high angle of attack while loosing height, but maintaining that steep nose up angle whilst in level flight just didn’t seem possible.

Looking at the F-16 it has fully moving elevators, right at the rear of the fuse. (Where else would they be!!!)
The Squall had elevons, and these are some 20% further forward. Whether this has any relivance or not I don’t know. I’m also wondering if the F-16 had a VT unit fitted :?:

So,…………all you jet jockey’s out there. Do you think it’s possible, in the hands of a skilled jet pilot, that the Squall could perform such a trick?

K.

[Ron]

Hmmmm
Food for thought indeed.

Maybe, just maybe, the VT unit providing 'elevator' type thrust right at the rear, might allow this stunt?

Or maybe Derk's stunt was more balancing on it's tail than actually flying :?

Ron

[Happy Days]

Hmmmm

Maybe, just maybe, the VT unit providing 'elevator' type thrust right at the rear, might allow this stunt?

Or maybe Derk's stunt was more balancing on it's tail than actually flying :?

Well that’s what I thought Ron, but I couldn’t see a VT unit in the vid.

I tried to balance the Squall on it’s tail……….I don’t have anything like enough skill yet, :roll:  but I did find that trying to do it is incredibly difficult. With little or no air moving over the control surfaces, the slightest breeze flips the plane over. :oops:

It’s nothing like prop hanging a propeller powered plane, which produces a massive amount of “prop wash” over the elevator & rudder giving a fair amount of control.
With a jet, there is no prop wash.

It doesn’t help  trying to do these tricks at a safe height either. (So there is time to recover and regain control.) As the plane is so small it’s difficult to see the subtle movements. :!:


I want to know how he did it! :evil:  :evil:

Keith

[Ron]

Yes that all-moving tailplane must be a big help.
As you say, no propwash, so the bigger the control surfaces the better.

I can't see a VT unit either...




I think Derk had a very calm day too, not a windy hilltop.

Still looking forward to mine arriving though :lol:

Ron[/img]

[Ron]

Well....
Parcelforce say my Squall left Gatwick at 22:00 yesterday

Lets hope the batteries last  :lol:  :lol:

Ron