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E-flite . Fast Lad Performance . Ace Hobby

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Off Topics > RC Gliders (Sailplanes), who flies them?
 
 
Chook
Senior Heliman
Location: Esperance Western Australia

My Posts This: Topic  Forum

Yes me to. I'm lucky enough to have brilliant slopes 10 mins from home and from Nov to April, afternoon SE sea breezes to exploit.
A few pics in My Gallery.
08-16-2007 Over year old.
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dialarotor
Key Veteran
Location: Traverse City, Michigan

My Posts This: Topic  Forum		Been flying them since 1972

Heck, I can remember when one of the best heli pilots was one of the best glider pilots. Anybody know what happened to Larry Jolly?

Raptor 50,60,90& E550
08-16-2007 Over year old.
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rcsoar4fun
Veteran
Location: Corpus Christi, TX

My Posts This: Topic  Forum		Larry Jolly is still flying. As I recall he was a member of the world team a few years ago? I think he flies helis too.

Liberty has ended when my rights live or die at one man's opinion.
08-17-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		update

Well....i just put in my order for the Bird 3000

i dont like the clear purple covering though. so im going to rip it off when i get it and probably switch the main wing over to white.

also...while the covering is off, i plan to do some mods.

i plan to put in flaps/spoilers.

my friend was telling me about this method of slowing sailplanes thats very effective.

you use the ailerons as spoilers that go up, and the flaps going down. you fine tune it so the plane will not pitch either up or down, just slow down from the huge amount of drag the two surfaces create.
apparently this method is called the "Butterfly".

Shawn
Team Leisure-Tech
Team HelixRC
12-20-2007 Over year old.
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Boidman (RIP)
Key Veteran
Location: The Home Stretch

My Posts This: Topic  Forum		Beautiful 'Bird.' Good Eppler airfoil. Reasonable wing loading.

My only experience with the flap and aileron braking relationship is that it is called 'crow' when one goes up and the other down.

I suggest that you look into adding spoilers to the top of the wing sections, before committing to the mods for flaps. Reasonably well located spoilers won't cause the glider to pitch, much, and they can be mixed with ailerons that are electronically set up as flaperons. Hinged door type spoilers are very easy to retrofit, even moreso with all the covering off.

The hinged type are often called 'barn door spoilers.' There are more methods than you can shake a stick at to actuate them. Most are very simple.

Two images ripped from the ether:



http://www.skybench.com/slbird.html
http://www.skybench.com/report/spoilers.html

What the hell, I'll add this little number. It flew surprisingly well, in a very strong updraft.

12-20-2007 Over year old.
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Rob_T
Elite Veteran
Location: ..

My Posts This: Topic  Forum		That purple covering will be far more visible at great heights than a solid white. I personally wouldn't change it.
12-20-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		well im going to, lol. i want to rip the covering off to make the mods i want. maybe i'll only change the center section and leave the two outer wing sections alone.

Shawn
Team Leisure-Tech
Team HelixRC
12-20-2007 Over year old.
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GREYEAGLE
Key Veteran
Location: Sioux City IA

My Posts This: Topic  Forum		Memories : Guess I better break #4 out of the box

I have built 3 of the original Marks Models B O T - imes. Each had a different habit, - Still got one left in the box but it's a re manufactured rendition using lite ply which most likley I'll scrap out.

My partner actually won a X country ballasting up to 52 Oz and we couldn't keep up chasing it at 70mph while riding in the back of a truck. We covered over 6- Miles that day. My favorite time was hand launching over a small 20 ft dike then catching a hat sucker and thermling out.

Although I always used spoliers and a captured hook, if you want to avoid the rigging and the extra weight of a servo - you can always roll to the inverted and just fly her down and roll out again.

This is the first semi - BOT that I ever saw with a ironing board wing and aleron's - it rolls pretty axial.

Think I stretch mine about 20" and stick it my 15" astro geared folding motor on old school 6 cell paks' Battery ballast would be a advantage.
I sit and cruse this old girl



greyeagle
12-21-2007 Over year old.
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jwhitacre
Key Veteran
Location: Tarentum,PA- US

My Posts This: Topic  Forum		I'm working on a Sig Riser 100" right now. The mods will be spoilerons, electric powered, and flaps. Here is a pic of what I have done so far with my scratch built 56" electric sailplane.



Depleting the world of parts, one crash at a time!!
12-21-2007 Over year old.
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Rob_T
Elite Veteran
Location: ..

My Posts This: Topic  Forum		If you think a BOT at 52 ounces is fast, you should try 80, which is what they used to race them at in their day.
12-21-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		racing r/c sail planes? sweet, haha. what kind of speeds would they hit?

Shawn
Team Leisure-Tech
Team HelixRC
12-21-2007 Over year old.
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Boidman (RIP)
Key Veteran
Location: The Home Stretch

My Posts This: Topic  Forum		Four meter Multiplex ASW-22, just over 190 mph when the ballast tubes in the wings were fully loaded with lead, in a vertical dive starting around 1,000 feet up above the cliff edge. Under those conditions, cruise speed was over 80 mph. Local Highway Patrol, on lunch break, provided the 'gun'.
12-21-2007 Over year old.
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Rob_T
Elite Veteran
Location: ..

My Posts This: Topic  Forum		I believe you'll find the official world record for any RC model is held by a glider (despite jet and rocket models!). It's somewhere just under 300mph for the average of 2 timed runs in opposite directions. (Note opposite directions means we're not talking about a terminal dive )

Now a BOT would blow itself to peices from flutter well before hitting those types of speeds. However, I think BOTs were hitting about 60mph in 1977 in F3B contest.
12-21-2007 Over year old.
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GimbalFan
rrProfessor
Location: Copter County, Nv

My Posts This: Topic  Forum		There's a slope glider record of 300+ mph. The guy's name is Kyle Paulson. They use a technique called Dynamic Soaring where the glider does very fast circles, part of which are behind the ridge where the air is slower, and the pilot uses the wind speed differential to accelerate to insane speeds.

In the video, Kyle's flying circles about 150' in diameter and a guy near him is using a radar gun. A quick search didn't bring it up.

Here's a pretty good video of Kyle flying fast with a 'unique' crash at the end.



op-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-thwõp-t
12-21-2007 Over year old.
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Taipan
Elite Veteran
Location: Sydney, Australia

My Posts This: Topic  Forum		The WR is 309mph and they can go faster but the problem is radar guns max out at 310mph! So they're trying to come up with a faster one.

DS is insane, I've always wanted to do it & bought a foamie designed for it years ago. It's meant to do around 150mph. The CF gliders they use for the WR are designed to the extremes. We're talking wings you can place on 2 chairs and you can stand in the middle & won't break! Yet they do at 50+ G's!
12-21-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		well...i recieved my Bird 3000 today!. i must say, it is a VERY VERY impressive piece of engineering.

the cuts, shapes, contours, and covering are absolutly perfect.

as i sit here looking at this thing, at the pure quality and effort put into the covering alone, i find it a shame that im going to rip it off but the clear purple just cant stay...although i am having second thoughts, LOL. but since i plan to add flaps, it would be a lot easier to work with while no covering was on.

its actually a little smaller then i was expecting, but thats ok, it will be easier to handle then what i thought it would have been.

i will take some nice detailed pics of it later on. but first impressions leave me very impressed with this sailplane.

at the moment im still deciding what to do with the color scheme. i was thinking of something like the classic white/orange bird of time...

but i might just re-do it in clear covering again, just in different colors, maybe sky blue...




nah, i think a clear red or maybe orange would be best. i may stick with a clear covering, but im still deciding on that as well.

does anyone have tips of taking off covering without it ripping and leaving a mess?

Shawn
Team Leisure-Tech
Team HelixRC
12-29-2007 Over year old.
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GREYEAGLE
Key Veteran
Location: Sioux City IA

My Posts This: Topic  Forum		Please Don't strip it

If you want to add or change just add a bit of color on the LE and maybe the te . Please think about it. Tranparent Purple is pretty rare and even rarer to se it on a bird. What would be really nice if you use Metalic Pearl White on the LE's and apply it semi cold so that you don't bleed the colors thru. One of my favorites was a Aquila - Grande done in tranparent blue - I lost it due to a 5 year old flying time and a spare failure. The color is Nice !


If you do it in ORANGe you will hever therfore be Known as the Pumkin flyer.

greyeagle
12-29-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum
Quote 
therfore be Known as the Pumkin flyer.

better then the "Queer flier"

but i still have to cut it apart to add flaps though. but thats only for the mid section.

the out wing sections...well...they have holes in all the ribs to make way for the wires, but i have no idea how im going to get the wires through without cutting the wing open...

i wish they had have just sent it to me with no covering at all.

Shawn
Team Leisure-Tech
Team HelixRC
12-29-2007 Over year old.
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GREYEAGLE
Key Veteran
Location: Sioux City IA

My Posts This: Topic  Forum		It's Easy

Tie a piece of carpet thread on the end of a ball key chain and just let it rattle it's way through while you shake and tilt and do the boogie woogie.

greyeagle
12-29-2007 Over year old.
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		yeah...i thought of doing something like that...kind of like plumbers and electricians do to run wires in houses.

but...im still gonna remove the covering anyways

i think i will go all white with clear orange tail control surfaces.

then put some markings on the bottom of the wings like i did with my Butterfly.

Shawn
Team Leisure-Tech
Team HelixRC
12-30-2007 Over year old.
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Thunder Power RC . Mikado Modellhubschrauber . Futaba-RC

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Off Topics > RC Gliders (Sailplanes), who flies them?
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