Build Log Oly II S Build log?

[Ray Hayes]

Chuck and Leateck,

I haven't used Gorilla glue yet, but became a fan of it when I looked at a Challenger fuse built with Gorilla glue. The builder was a pro and I basically could not find any trace of glue at the longeron joints. Very light and very strong fuse.

Question: what glue did you fellas use to laminate the three forward fuse sides.

I use eight rubber bands on my OLY ll S wings and launch hard from a winch with a zoom at the end. The rubber dries out very quickly, especially if left in a vehicle.

Ray
Sky Bench ... Woodys Forever
http://www.skybench.com

[cn0rris]

Originally Posted by Ray Hayes

Question: what glue did you fellas use to laminate the three forward fuse sides.

I used epoxy for mine, as per the build instructions, but next time I'll definitely PU glue a try for this sort of thing. I learned about it building a Fry from Steelhead Products, and really like how strong yet light it is. You can use it a lot of places where you might otherwise use epoxy. It's got maybe 80% of the strength of epoxy, yet has a bit of give in it where epoxy can be brittle. So it makes for a very tough joint.

I've heard of people laminating balsa wing skins to foam cores with it too, and I imagine it works very well for that. It's an incredibly tough joint, and seems to work well with a lot of different materials. With epoxy, once you get a crack or delam going, it'll travel pretty easily. But with PU, since it foams and makes a bunch of micro-bubble-shaped structures, it's a lot harder for a crack to propagate.

Originally Posted by Ray Hayes

I use eight rubber bands on my OLY ll S wings and launch hard from a winch with a zoom at the end. The rubber dries out very quickly, especially if left in a vehicle.

I typically use six, with the last two crossed, but put 8 on if I'm launching into the wind. Maybe I'll just make 8 my usual just so I don't have to think about it.

Chuck

[leaktech]

Originally Posted by Ray Hayes

Chuck and Leateck,

Question: what glue did you fellas use to laminate the three forward fuse sides.

Ray
Sky Bench ... Woodys Forever
http://www.skybench.com

It's the white fast drying gorilla glue. It costs more than epoxy at 5 to 6 bucks per 2oz bottle. Can't find it in larger quantities. It definitely takes practice to learn how much to apply and good spacing of adjacent glue lines. Also don't skimp on lead weights during the cure. Sometimes I do and sometimes I don't use a damp sponge on one surface to speed things up. Laid down a thin 1/16" to 3/32" pattern with 1/2" spacing.
James

[smitty14]

Simple ? How do I get a symmetrical LE?

[jswain]

Originally Posted by smitty14

Simple ? How do I get a symmetrical LE?

After i glue the LE on and am ready to shape, i take a thin marking pen and make 2~4 long, evenly spaced parallel reference pen/ink lines on all three remaining sides - top/front/bottom .

I block plane along these lines so the square leading edge starts to look like one half of a octagon shaped wood pencil does, evenly and symetrically cut along the whole LE length.

The top gets planed the most and the bottom of LE usually gets planed the least.

I **never** touch the center line or most forward LE line mark, on the front side of the LE with the block plane otherwise there is no reference.

Make a thin ply or hard balsa cross-section view template of the LE, side view from plans, so it kind of looks like an animal took a LE shaped bite out of it. Sand (60 or 80 grit)the LE down until the cut out hole of the template sits flush against the front reference line of the LE.

Test this first on scrap wood to get the technique.

It takes awhile but it works.

js

[smitty14]

I had planned a line at the center. The other two lines will be good reference marks - thanks for the idea. A slider template to check progress will be a good idea too.

[mr ray]

You did a great job and I can imagine it is harder than it looks. Can you tell me what your oly II weighs auw? Thanks again for a job well done. P.S. I like the harlequin color scheme you used. ..Ray

[leaktech]

I've installed the spoilers similar to Chuck's method. Was hoping to use the rudder channel for spoiler deployment. They're plugged into the gear channel but I can't figure out how to get full deployment with the rudder stick on a DX7. Maybe it's not possible? And maybe it's not the correct use of rudder stick on a RES Oly2S? After some fiddling it works great with the gear switch. Also I think it would work well if program mix>rate would go to -150%. I'm open to suggestions on this setup and not married to anything.

Chuck, if you look close at the vid it's possible to see that my spoiler linkage is similar to yours except that the servos are actuating oppisite from your drawing. I tried without success to do it like the drawing but could not get full up deployment until I turned the servo around the other way.
James

DX7 Spoiler (0 min 28 sec)

[mr ray]

I don't have a spectrum receiver but couldn't you use the flight mode on it and then you would get some different settings for the spoiler instead of full up or down.....Ray

[smitty14]

Just drew a center LE line and one line each, top/bottom centered on each. Used the planer and sandpaper with the TLAR method. Didn't get around to the LE template, but it looks good so far.
I had to call Hi-Tec for advice on the setup. I may settle for the throttle on the top left flap knob, spoilers on the throttle stick and R/E on the right stick. Xnsmtr is an Eclipse 7, about seven years old.

[leaktech]

Originally Posted by cn0rris

leaktech,

It's good to see another Oly IIS coming to life! Glad to hear this thread has been helpful.


Post pictures when you're done, and I'd like to hear a maiden flight report!

Chuck

Did the maiden today just before sunset. This model turned out very straight best I can tell with these eyes. So I figured it's time to give a little E-power on first throw. (sorry wrong forum) The only sailplane previous to this ship is my Parkzone Radian. The Oly2S is far more responsive and seems to float even better on the few local park laps it did from low altitude. It was great to get the maiden behind me and on to fine trimming next time out.

Stuck the tail feathers on with urethane glue....seems fine.
I got a 2100mah batt under the wing all forward as it will go and it's barely making CG.

AUW was a little under 52oz with no hook, big motor, prop, batt, speed c......etc. If anyone knows their Oly2S AUW winch or elec I'd like to hear some numbers. Thanks.

Again this is a great thread and helped me a lot. I think my next woody will be the SB Sky Bird.

James.

[mr ray]

A real nice looking glider. It must be a good feeling to build it and then to find out it flies great also. Let us know how that first high flight goes. I'm jealous that you can still fly in nice weather, it was 4C here today that is about 38F and a real cold wind. Nothing else to do but build. Just building a Gambler AG dlg right now and in January will order a OlyIIS. Maybe one day I'll get down there in the winter instead of freezing my wings off up here....Ray

[leaktech]

Originally Posted by mr ray

A real nice looking glider. It must be a good feeling to build it and then to find out it flies great also. Let us know how that first high flight goes. I'm jealous that you can still fly in nice weather, it was 4C here today that is about 38F and a real cold wind. Nothing else to do but build. Just building a Gambler AG dlg right now and in January will order a OlyIIS. Maybe one day I'll get down there in the winter instead of freezing my wings off up here....Ray

Yes it's been primo flying weather here most days for 3 weeks. My job is finding leaks on swimming pools..... still going in the water to squirt dye and set plugs.
90F tomorrow, then it cools to 85F the rest of the week. We build in the summer here.

Yes again, it felt very good to see it go up at 1/3 throttle with a little down to stop the stall.

James

[ray foley]

hi there from Toledo

I have a 32 year old electrocuted Airtronics OlyII, I know it isn't a skybench Oly2s, however, the AUW is 52.6 oz. The OlyII is set up as REM, no spoilers.

the internal equipment is as follows:

Aveox 2526 3y inrunner with Maxxon 4.3:1 planetary gear set
CAM 14x9.5 foldemup prop and spinner
CC phx 45 ESC with a torroid choke in the signal lead
futaba 72mhz pcm dial-a-crash rcvr
two hitec hs475hb analog servos

The OlyII still flies great after all these years!!!

ciao -rjf

[TheNightowl]

Originally Posted by leaktech

Did the maiden today just before sunset. This model turned out very straight best I can tell with these eyes. James.

Purdy birdy, there Leak. Nice job.