SAGITTA 600 PLANS, Have them?

[tigerstrike]

Hi,
Came across one of these gliders, wings have been built but the fuse , tail, and stabalizer need to be built yet....

Have a problem!!!! I don't have the wood parts to build the stab in the kit, no big deal I know but, the section in the plans for the stab has been cut out..........

Can anyone supply with the stabl. plan section, so I can complete this glider???
Thanx

[Whizwaz]

Tigerstrike,

I actually have a complete Sagitta 600 I bought years ago.

I could make a photocopy of the stab. It might be on two sheets of paper.

If you can't find a set of plans, let me know, and I'll make a copy.

[tigerstrike]

Thanx to another sailplane hobbiest who sent me the pictures of the plans of the stab, I was able to download and process them thru a couple programs and print out actual size plan sheet of the stab.

Few weeks, I'll start to build this guy.

I noticed the SAGITTA 600 has no elevators(I'm a newbie to sailplanes) does that mean the stablizers on the wing control lift? and the ailerons on the wings are for quick manuvers??

[Jay Burkart]

ON the Sagitta 600 originally there was never ailerons.

The stab is set up as a stabilator or full flying stab
so the rudder is hollow with a belcrank inside
and moves the whole stab up and down.

Need anymore info.
I've got a flying Sagitta hanging here on the wall and
if needed I can dig out the plans but it will take a bit
of looking.

Jay

[tigerstrike]

Thanx, no I understand the plans a bit better about the whole stab moving up and down, was kind of wonder as I glanced the plans what that was for.

So the spoilers are also used to slow down the plane with a little lift to keep the nose up?

I have built other R/C planes before but not any sailplanes and think the sailplanes might just be more to my liking.

[Jay Burkart]

Here's a picture of a Sagitta vertical stab with the horizontal stab
mounting tubes shown.

The rear tube shows the cutout where the belcrank swingssthe
rear joiner rod of the stab give ing up and down elevator
action. The front tube is the axis and also support the
front part of the horizontal stab.

The belcrank is a right angle belcrank or really is in the shape
of an "L". The rear of the "L" goes the the back joiner rod
the center joint of the "L" is the axis and the bottom part
of the belcrank is attached to the pushrod going up to the
elevator servo.

I hope this helps you. There should be some detail of this
arrangement of what's left of the plans you have.

Jay

[Jay Burkart]

The spoilers kill lift and give a very steady and pronounced
sinking to the airlplane. That is not a dive or anykind
of radical descent. It is as if a hand is just pushing
the whole plane down but in a relative level flying attitude.
You will need to compensate some with elevator to hold
a good level attitude.
Really they are used typically to get out of thermal lift.

Jay

[tigerstrike]

Thanx that will defintely help out, I saved the pix into my hard drive for reference.

[Jay Burkart]

I had a whole Sagitta set of "bones" around here and could
have taken a picture but I can't find it now....

Here little Sagitta Here Sagitta. come to papa.


Do you want anymore picture of anything since I got my camera out and the Sagitta is sitting here?

Jay

[Don Cohn]

Hey there Jay... I noticed that your stabilator "hinges" in front and mine "hinges" in the back. I went and looked at the plans to be sure that mine was set-up correctly and sure enough the bell crank runs up and attaches to the front of the stabilator...just like mine is.

Did they change this at some later date? Mine was built in the mid 80's.

Don

[Jay Burkart]

Don,

I don't know, I built mine in about 1986 or so too.

I don't remember if I modified mine for some reason or what.
I'd look at the plans but they're too hard to dig out of the attic.

I don't know what is the deal, obviously since they are
of the same vintage one is a mod.

My Prodigy is set up the same way for the flying stab.
Matter of fact all the sailplanes I have with a stabilator
all are with the axis in front.
Well, at least I'm consistent.

Hey I see you live in Sunnyvale, I used to go out there a lot.
Prunedridge and Wolfe I think.
But not anymore, got retired.

Jay

[Don Cohn]

I grew up not too far from there...Homestead Rd..... It used to all be orchard and then one day they bull dozed the orchard and it was HP Cupertino....guess you're an old HP'er??


Don:)

[Jay Burkart]

Yep,

I am an old HP'er. 29 years and a manager
before Miss Carly forced me to retire.

I'm not happy about it.
But now I got lot of time to fly and build
Maybe I'll look at it different some day.

I've built 15 airplanes since August when
she axed me.
Luckily I was old enough to retire and get benefits.

I'd say since you knew it was an orchard you've been
around for while too.

I never got to do any flying much when I went out there.
I did meet a really interesting guy who'd been
flying models and sailplanes since the early 40's
he was up in Pleasanton and was a buddy of the
editor of Soaring Digest.
His name is Dave Acker.

Jay

[Don Cohn]

No one on their death bed ever wished they'd spent more time at work..... Enjoy every day, Jay!

Best regards,

Don:p

[SoarNeck]

Typically the fixed stab pivot is at 25% chord for plate airfoils and about 33% chord for airfoiled stabiliators. The actuator is usually behind the pivot because you can get a longer moment arm that way, which helps to prevent flutter.

[eberkers]

Can anyone give some flight experience with the Sagitta? I was told this is supposed to be a very good glider that can fly with lots of wind.

I am currently building a Sagitta (project 2), this is the newer version. Does anyone have experience with this one as well? It is meant to be as a glider, but I put a brushless in since we don't tow a lot at our club. Hopefully it is a lot of fun with a strong motor.

For a review see: http://www.soarer.co.uk/pages/reviews/sagitta2.html


Cheers, Erwin

[BrianSmith]

The Sagitta really never came as a belcrank set up for the stabalator..It was a flex cable that went from the servo arm right thru the fuse and curved up to the stab..The pivot was on the back and the drive was to the front pin...Brian Smith