Can any one identify this SailPlane?

Can any one identify this SailPlane?
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Can any one identify this SailPlane? - 8/31/2008 9:51:26 PM

linkadrip

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From: Tehachapi, CA, USA
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My cousin gave me trhis glider and i was wondering if anyone might know the make of it it is an older glider he has had it since 1991 it was given to him and may be much older it uses some sort of flaps on top the wings for brakes or maybe aileron type control and has rudder and elevator. i just never have seenthe flap built intot he wing and there are stings that are used for the control linkage to these flaps and one servo with a eye type of connector. this is my first sailplane so i dont really know much about them. i have several rc airplanes but dont understand the flap on top the wings. and wouldnt mind knowing the make of the glider but may be a home made plane too.

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RE: Can any one identify this SailPlane? - 8/31/2008 9:54:18 PM

Chasing Fear

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From: Columbus AFB, MS, USA
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link,

It appears to be an Olympic II. See this page for a description:

http://www.skybench.com/beginners.html

The "flaps" on the top of the wings are spoilers to help it descend faster.

-Allan

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RE: Can any one identify this SailPlane? - 9/1/2008 2:04:31 AM

OzMo

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From: OZark, MO, USA
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Oly II would be my guess.
You should never fly strange unknown aircraft, it just isn't a good idea. I want you to be safe so just send it to me and I will "test fly " it for a couple months free of charge.

it is set up well for great fun and RES (rudder elevator spoiler) competition

Someone did a very nice build and cover job on that glider. You should buy your cousin a NICE dinner.

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RE: Can any one identify this SailPlane? - 9/1/2008 2:12:41 AM

da Rock

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Not a guess.

It's an Oly II. A set of wings for one is leaning against the wall about 3' from this keyboard.

The spoiler strings go into the fuselage directly to a servo there. They have loops at that end of the string that would slip over ball links. The links were on opposite arms of the spoiler servo, sticking up, waiting for you to slip a loop over each one. The spoilers work good. A bit primitive by today's standards.

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RE: Can any one identify this SailPlane? - 9/1/2008 5:39:09 AM

linkadrip

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From: Tehachapi, CA, USA
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Thanks for the information everyone. I'm still not to clear on how the spoilers work. any sites that have a manual or blueprints or any infromation on how the spoilers work excatly would be great i'll search arounf the forums for info or a link to a forum were it expalins in more detail. the sail plane needs alot of repair work but i have to agree it defiently matches the Oly II thank you for clearing up that mystery. now i just need to learn how to fix them spoilers everything else works fine but the spoilers on the wing aren't connected and i have never seen anything like that before.
I took my cousin out to thoe Joe's and bought him a 12 OZ prim rib dinner the yesterday before he gave me the plane..

plus i'm building a web site for him and many others things he doesnt know how to fly it was his sons but his son passed and he wanted me to have it so it wouldnt goto waste and i have never flow a sail plane but have pletny of experience flying glow and gas plane so it thought this will nbe a great start to get into sailplanes since the wind is always blowing in Tehachapi and that is what everyone flys here.

< Message edited by linkadrip -- 9/1/2008 5:44:12 AM >

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RE: Can any one identify this SailPlane? - 9/1/2008 6:16:21 PM

da Rock

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How they work?

When you pull the string, they pop up and spoil the lift over that section of wing. And they create drag.

How do you get them to work?

Your pictures show a 3rd servo with a flex arm running aft. That's probably the spoiler servo. What's on the end of that flex shaft, a hook or some type? The two spoiler strings have loops on the ends, right? When you're attaching the wing to the fuselage those loops hook over whatever is on the end of that flex shaft. That spoiler servo looks like it's in the "spoiler up" position. You'd rotate it clockwise to a spoiler down position where the hook on the end of it's flex shaft was farther aft. That would give the string loops a chance to be attached to the hook.

The length of the string is adjusted at the spoiler itself. There is a capture setup out there. Strap on the wing after hooking the two string to the flex shaft. Loosen the strings at the spoilers so they won't cause problems being too short. You do the adjusting by setting the TX to give full spoiler up. Then open each spoiler to where you want it to be for full spoiler. 80degrees is good. Now pull the string to take out all slack and capture it however that is done. Different builders did that different ways. Now go adjust the other spoiler. When you move the spoiler stick (lots of guys use the throttle channel for spoilers on their Olys) to "spoiler down" the servo moves the flex shaft aft, relaxing the strings. That also gives the strings enough slack that you can unstrap the wing and when you slide it forward, the strings get more slack and you can disengage them.

Pretty amazing what we did with ingenuity and some string back before computer radios, eh.

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RE: Can any one identify this SailPlane? - 9/1/2008 6:31:31 PM

da Rock

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You will want to use an iron or modeler's heat gun to pull all those wrinkles out before you fly her. Those wings get a fair amount of their strength from tight covering. Plus, she'll appreciate the face lift.

I built mine in January of 1985 and maidened it at something less than Zero degrees. Lived in Minnesnowta at the time. Picked a warm day for January. She's been a dependable soarer since day one. And she's been almost out of sight way too many times. Nowadays, I don't let her out of my sight.

I did notice a peculiar thing about her. I guess it might have something to do with her upbringing. Darn near every flight where she hooks good lift, the old girl winds up heading South. Almost every time..... heads South. You think models might be smarter than we think?

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RE: Can any one identify this SailPlane? - 9/1/2008 7:12:00 PM

linkadrip

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From: Tehachapi, CA, USA
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Thanks Rock
yes the servo has an eye type of hook and i was pretty clear on how it connected. the connection i'm still baffled buy is the actual connection of the spoiler to the the string. I have looked throught the link to the plane higher up in the post and found another link to instructions in which i stilll need to open i was on a lap top that wouldnt open the link so will do that and hopefyully that will explain how there connected. There doesnt appear to be a spring that would pop them up. understanding the concept of there function is fine i have 2 simulators G4 and G3.5 and understand how the throttle servo acts to the Aerodynamics of the wing on the plane buy slowing it down and speeding it up buy opening and closing the spoilers. just unclear on the connection in the wing with the string to them.

In my understanding the servo arm being moved or the linkage being in the farthest aft position the spoilers should be fully deployed open slowing the plane down and the throttle stick being fully foward the spoilers should be fully closed causing the plane to go at it fastest pace with no drag on the wing. Just dont understand how the mechanics are done in there since both are broke with apeice of wood attached to the string it was hanging in a garage in bakersfield for 10 years lots of heat and cold.

and i notice there are skids on the bottom of the plane but there facing the wrong way from what i can see and acting as hooks and upon landing it would come to a complete dead stop causing alot of stress on the airframe i would think , my cousin said it would come down and stick and has been broken on the tail when landing. i'll definetly take my iron to it and smooth it out and it needs a few patches on the wings with new monokote and will have to go over the tail damage and cover the rear part of it cause it's just painted on the bare wood have to sand the paint off and recover..

Just that mechanics in the wings that has me stumped for some reason.there was some old dried up hard rubber bands in both the spoiler bays. i'm hoping the photos i took will help. there are little hooks in the spoiler bays i'm assuming for connection of rubber bands somehow..

Really appriciate all the input on the plane i'm sure it will be a great flyer. When i had it in the front yard taking the pictures of it it wanted to sail away lol.

my pictures aren't the greatest buy may help understand what i'm confused about on the mechanics of the spoilers in the wings the other part is pretty straight foward. i just cant figure out what pushes the spoilers open i can understand the strings pulling them shut.

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< Message edited by linkadrip -- 9/1/2008 7:18:27 PM >

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RE: Can any one identify this SailPlane? - 9/1/2008 9:23:02 PM

da Rock

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A number of your pictures show a rectangular hunk of wood at the spoiler end of the string. And there is a smaller hunk still attached to the underside of each spoiler.

The big pieces have broken off from the smaller hunks. I bet you can match up the fracture. The rectangular hunk sticks down under the hingeline when the spoiler is closed. It is basically the spoiler horn. The string pulls it to open the spoiler. It looks like the builder tried to use a rod to reinforce the area where the break happened. It looks like the rod would stick into the remaining, damaged part on the spoiler. With some CA, you might be about 20 seconds from having a working spoiler. After you see how those parts orient to each other, consider the amount of stress that "horn" has to stand. You might want to do a replacement kind of repair.

I did not rig my spoilers with such a short hook on the servo. My hook passes all the way through the bulkhead. From you first pictures, it looked like there was a flex rod attached to the spoiler servo. The later pictures show the setup a lot better. I can't get any idea of the routing of the string from the wing roots to that hook. But I'm betting you can probably figure it out now that you know the two strings should pretty much go straight forward to that hook.

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RE: Can any one identify this SailPlane? - 9/1/2008 9:28:49 PM

da Rock

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Chuckle.......

The skids are backwards, right? You haven't had too many competition sailplane nuts for friends have you?

One of the major tasks in sailplane contests is the timed thermal flight. You are given an exact time and you fly it. Exactly. To the second. If you have a 3 minute task, you want to land at 180seconds, give or take NO seconds. And to make it interesting, you have to do a spot landing. The spot is 0.0 inches by 0.0 inches. Each foot you miss the spot by costs you points. Just like every second you're early/late at hitting your task flight by.

Those skids stop the plane RIGHT NOW, RIGHT THERE.

GRIN..... See why they're like that?

Whomever flew that airplane wasn't screwing around.

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RE: Can any one identify this SailPlane? - 9/1/2008 9:36:51 PM

SteveW

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From: Rockledge, FL, USA
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quote:

ORIGINAL: da Rock

A number of your pictures show a rectangular hunk of wood at the spoiler end of the string. And there is a smaller hunk still attached to the underside of each spoiler.

The big pieces have broken off from the smaller hunks. I bet you can match up the fracture. The rectangular hunk sticks down under the hingeline when the spoiler is closed. It is basically the spoiler horn. The string pulls it to open the spoiler. It looks like the builder tried to use a rod to reinforce the area where the break happened. It looks like the rod would stick into the remaining, damaged part on the spoiler. With some CA, you might be about 20 seconds from having a working spoiler. After you see how those parts orient to each other, consider the amount of stress that "horn" has to stand. You might want to do a replacement kind of repair.

The poster mentioned there were dried out rubber bands in the spoiler bay, and little wire hooks in the wood. The rod isn't to reinforce the joint in the block. It's an anchor for one end of the rubber band that pulls the spoiler back to the closed position. The little wire hooks anchor the other end of the rubber band.

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RE: Can any one identify this SailPlane? - 9/1/2008 9:39:37 PM

da Rock

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Oh yeah, the rubber bands in the servo bay...............

The spoilers needed a return-to-rest capability. Dental rubber bands are used by a lot of modelers for that. Do you see a tiny hook somewhere on the spoiler and a matching one somewhere in line with it?

Finding the right strength rubber bands isn't easy. Too strong and the spoiler horn breaks.

You got a warrior there. Actually, you got a sword there. The warrior is gone right? Looks like the sword wasn't very broken up. The warrior must have been good with that sword. Contest flying is hard on airplanes when the modeler is just starting. It's not so hard on the airplanes once the modeler has a little experience.

That airplane is a perfect example of how excellent the sailplane hobby is. That sucker is an excellent newbie airplane. And it'll compete in the top ranks at the competitions.

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