rctom

It sounds like your plane may be a little nose heavy. Feeling like you don't have enough elevator at low airspeeds is an indicator of this.

TF

ben beyer

My Feedback: (23)

Well, I kept it moving and the CG is set about 5 3/4" from the leading edge. When I did a loop I had to put in full throttle because it was so big. Ran out of power at 60-70% throttle. Plus it took quite a bit of elevator in turns to keep from loosing altitude with power on. But from the stall we did and the way it just floated down the runway Max thinks the CG is just about right. I'll try it again and I can always move my throttle servo back...

rctom

Then you have something wrong. Full up elevator should do a loop about 15 foot diameter or possibly snap out of it. Check everything, get more throw. If it floats the CG is OK but something else is wierd.

TF

ben beyer

My Feedback: (23)

Guess I should've mentioned this was all on low rates. I.E. Full up on low rates which are aparently too low. I added in 5% more after I got it on the ground. I just eye balled them from past experiences where i followed instructions and lows were too high. Sorry about the confusion. I got about 40-45 degrees on full up high rates. It was the first flight, wasn't about to hit the high rates just yet.

airborneSGT

My Feedback: (15)

I am really bad when it comes to that. I just guess and add tons of expo. Never failed me yet!

Nickolas

Hi,

I really like the looks of the 120 Edge, but looks is not everything. I'm looking for a plane that can pattern and 3D at a descent level. It seems that the Edge 120 is a good 3D machine according to what I read however there are some coupling issues, pitching mainly during knfife edge flight. Is that regular to all Edge owners or depends on the set up? If the plane can not KE properly it will not be capable of "clear" rolling circles and point/slow rolls that's why I'm asking.

I have also another question. The plane has nearly full span ailerons but they are a bit narrow. Are they enough to oppose the gyroscopic effects during hover or someone has to torque roll to remain in the prop hang?

I really look forward to replies, I want to buy the plane but first I would like to verify that it will do what I have in mind. An videos?

Thanks and regards,

Nick

airborneSGT

My Feedback: (15)

I had a Yellow Aircraft 1.20 size Edge 540 and it needed mixing in knife edge flight. I think most planes along the lines of the Edge or Extra need just a little. Step up and get the 33% Extra 260 and you can do everything slow

flatlandmike

My Feedback: (17)

i still have not tweaked mine out yet but i can tell you the knife egde mixes wont be much
and the aileron authority is more than adequate for stopping torque rolls and will spin the other way

setup with 645 hitecs all around

forellana

EDGE 540 28% and 25% needs arround 15% mix aileron to rudder to the opposite side, stab mix is not neccesary

flyingohio

My Feedback: (2)

I've read this entire thread with interest, thanks for the input everyone. I'm thinking about purchasing one of the planes from the next batch, but here's the kicker... if I do, it will be getting a Brison 40cc gasser for power. It's about 12oz. heavier than the recommended engine. I will be running lipos on the ignition and rx to save some weight, plus whatever else I can do here and there to shed oz's. (I'm one of those nutty people who will save 1 oz if I can, because if you can do that 16 times...) So do you think I'm nuts, or? Problem is the 40cc doesn't quite have enough power for the 80" planes (3D, that is) so I'm looking for a better home for it than the 80" WM Extra it is in now. Any input appreciated. Also, does anyone have a firewall to front of cowl measurement? Want to make sure the Brison will actually fit without re-engineering things.

TIA!

airborneSGT

My Feedback: (15)

That size engine would do well, and probably also 3D. Just keep it as light as possibe like you said. Go with Lipos / Lions, light weight wheels, CF everywhere and get rid of wood you dont need. If you do the math you can figure out your wing loading - if you can do it under a certain amount you will be golden. You might want to find something light like the ZDZ 40 though. Anything under a STRONG 35cc you will not get true all out 3D IMHO. I did a Roto 25 in a 1/4scale YA Edge, and the ZDZ 40 would have done it better.

Tom's plane is lighter, has more wing area, and is much cheaper than the YA Edge. I think you will be fine with this setup.

anthonymio

You will destroy the wonderful flying capabilities of this airplane with that heavy engine. My Edge 540 has an OS 160FX and tips the scales at 11.5 lbs (dry). Goes vertical as long as I want it to at 3/4 throttle. Putting a heavy gas engine will make the plane fly heavy, not to mention requiring the use of lead in the tail to balance.

Tony M.

bandjc

My Feedback: (5)

I have to agree with anthonymio

I have the same setup, OS fx 1.60, and it is perfect.
I love my 28% edge with gas, but to increase the wing loading on this one by hanging a gas engine on it in my opinion is a mistake. I had the same thoughts initially, and I have owned planes this size with gas engines before. It can be done, but if you ever flew one lightly loaded with this kind of power, you would see what a differance the lighter wing loading does for it, and then want to ditch the gas engine.
They cannot touch the performance and flying qualities that this plane does at 11.5lbs with the 1.60 glow motor.
I'm glad I didn't make that mistake, and am more than happy to buy the glow fuel for this plane, and clean off what little mess it does make! Gas is great, but this one really needs a big glow motor. The OS 1.60 is a perfect Match for this plane.

airborneSGT

My Feedback: (15)

What is the bare weight of the plane? The reason I say that is some planes around 1000-1100 square inches of wing area do just fine with a gas engine. For example - Cap X, Ultra Rc Giles. So long as you keep everything light, then go for it. True its designed for glow, but if you can keep it light with gas, then you should have no problem. Of course I have yet to test this one out with gas. If someone had the time and a spare engine it would be interesting to see.

Sparhawk

Just read through the entire thread. Wow! I think the decision is made. I already fly a 30% BME Edge, but like Bob, I want something to easily throw in the back of the truck. I don't have a OS FX 1.60, but I do have a OS FX .91 and a OS 1.20 FSIII pumped engines sitting on a shelf. I don't mind sacrificing a little on the verticals if one of these will still fly the plane decently. Opinions?

It looks like the lead time to get one from the new batch is still a month away, its very possible to budget up for a new OS 1.60.

Spar

rctom

To answer some of these question, the firewall to cowl distance will be 6.25". This is one of the things that we changed when we revised it.

At 11.5 lbs. the plane is so zippy that I am beginning to believe it will fly OK with a gas engine at 12.5 lbs. I will be putting one together soon equipped that way.

I found a neat little 40cc gas engine from China that is light and inexpensive. I plan to test this on the Edge. The engine weighs 49 oz. including ignition, spark plug, prop bolt, everything except the battery. And it will run on a tiny little 4 cell 730mah AAA size pack that only weighs about an ounce. This makes it about 15 oz. heavier than an OS 1.60 at landing (dry) and probably the same weight as the OS 1.60 at takeoff (because you only need to carry half the fuel).

The Brison 2.4 is just a little heavier, but I think this should work well too. I will be testing this concept soon, if it all works out we will be selling a package of airplane, engine, muffler and hardware kit all for about $700.

TF

flyingohio

My Feedback: (2)

Thanks for the opinions everybody. I'm mulling it over, opinions here are as divided as my thoughts. Nothing out there in the 72" range really appeals to me as much as the WH, and since it doesn't sound like this has been done before I may have to be a bit of a guinea pig. The Brison is a fairly light engine, and it easy on fuel, so right there is a lot of the weight diff. made up. (I can fly 15 minutes easily on 400cc of fuel, with reserve) If I sprinkle a little carbon around, maybe I can keep the thing @ 12lbs. (not to mention my lipo rx and ign. setup) I'm not a hardcore 3D flyer, so if this plane comes in 3lb lighter than my current Extra with the same power and similar wing area... hey, I'm a happy camper. Glow really isn't an option to me anymore, I'm tired of the mess and screwing around brewing fuel, etc.

J.D.

olstoney

My Feedback: (19)

jhord,

Go For It!!

Let me simply put it this way.

My plane is due in this next shipment, the intended setup. Plane $300.00, YS 140FZ $439.00= $739.00, no peripherals.

Another common setup, Plane $300.00, OS 160FX with BCM Pitts $314.00=$614.00, no peripherals.

Wished this $700.00 package had come along sooner before I became so committed. Do doubt Tom will have a winner with this package at that price.

airborneSGT

My Feedback: (15)

Cant hurt to try. If anything you can always revert to a glow engine.

bandjc

My Feedback: (5)

If that little gas engine works out Tom
I hope you offer a similar setup for that new Yak.
I might try it if we can come in at 12lbs or just slightly over.
Can't wait to see what the little engine can do.
( There's a 74" Yak coming for 1.20-1.80 size or small gas, look for it in late fall.)

Sparhawk

Well, I ordered my Edge from Tom on Thursday and think I am pretty good for servos and gear.

I have:
3 - Hitec 5645 MgS (elevators, rudder)
2 - Hitec 5475 HB (ailerons)

Either a OS.91 FX or OS 1.20FS III pumped. Might bite the bullet and order the OS 1.60Fx.

Ok, now we just need the ship to come in.

Spar

flyingohio

My Feedback: (2)

Deleted a bunch of non-relevant blabbering.

Sparhawk

Quick question for the Edge owners out there.
For the Aileron linkage, did you make up CF tube/ Titanium ends or would a turnbuckle do the job? If a turnbuckle, what size?

I am trying to gather up the bits I need and order the parts I am lacking in.

Thanks,
Spar

flatlandmike

My Feedback: (17)

i used 4" H9 titanium turn buckles on the ailerons

nitro fanatic

does anybody think a g23 would fly this plane with enough power to 3D and how much heavier would it be?