RE: Great Planes Reactor GP/EP 3D ARF .46-.70

RE: Great Planes Reactor GP/EP 3D ARF .46-.70
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RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/14/2007 2:59:25 AM

Posts: 118
Joined: 6/14/2005
From: -, ARGENTINA
Status: offline

Hello jon595! I would like to know if you have your engine down a few degrees to fly well?.

Greetings and thanks again.

(in reply to FNG)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/14/2007 3:16:04 AM

Posts: 190
Joined: 2/6/2003
From: Dallas Tx
Status: offline

Hey idtbuzz, where exactly is your cg right now? I have an ax55 on mine and put the third flight on it today. So far I like it, but I do not have much wing rock, certainly a LOT less then I had on my Funtana X50. I am right about 4.75-5.0 right now and am about to order the graphtech gear to both get ride of the damn nose over tendencies (I have not yet, but I hate having to constantly be on my toes about it and I fly off of a kind of rough grass field)and to move the cg back a bit. I have to hold some down elevator when inverted and I would preffer it to be more neutral.

To get my cg where it is I had to mount my 5-cell battery on the back of the plate in the rear of the fuse that acts as a tunnel for electric setup, it was a b!tch to get it in there, but I HATE to add weight. I also used a pico servo for the throttle, a 5625mg on the rudder, and 225mg's everywhere else. So far I am at 91.2 oz or 5.7 lbs and with a 12.25x3.75 it has outrageous vertical performance. I am however using a Tower 46 muffler and Morgan 25%, but that allows me to turn the APC at 14,600 backed off to 14,400 or so and I leave a nice faint trail.

I am hoping to get to 5.6 or so lbs with the graphtech gear, it is already good but you just cannot get enough.

By the way, do not expect it to fly like the G3.5 does, reality in this size plane is just different, it will rock some. I can do all sorts of crazyness with the Yak 54 on 3.5 that I cannot do in the real world, but it is a great tool. I have found though that the Reactor is the easiest plane to hover that I have flown.

(in reply to FNG)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/14/2007 4:19:49 AM

jon595

Posts: 428
Joined: 3/14/2002
From: Pensacola, FL, USA
Status: offline

quote:

ORIGINAL: Guillermito

Hello jon595! I would like to know if you have your engine down a few degrees to fly well?.

Greetings and thanks again.

My engine is mounted stock, no thrust changes at all.

(in reply to Guillermito)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/15/2007 12:29:53 AM

Posts: 88
Joined: 10/3/2007
From: copperas cove, TX, USA
Status: offline

Hello Tim again got a few more flights on mine today. I have the stock engine mount with no adjustments it looks like a little up though. I would be interested in moving it down and seeing what it does maybe by shimming the top mount bolts. My CG is right at 5 inches aft of the leading edge of the wing. it flies inverted level with no input at all. My lateral CG is good does not fall one way consistantly. I tried some spoilerons about one half inch and found them to help a lot with the wing rock and I mixed quite a bit of aileron exponetial wich helps me stop aggravating the wing rock. now I am able to do really smooth elevators and Harriers but I'm not to great at the harrier yet. gotten vertical a couple of times but I don't have the responsivness to get it there without climbing quite a bit. I have all the elevator travel I can get and its about 2.50 inches. I feel I should be able to gas it hard and pull up and snap it vertical but it's very slow getting there and it wants to climb before i get vertical. I feel like I don't have the athority I need on the elevator. I broke my 12.25x3.75 prop on a hard landing so I am running a 12x6 for now until I get some 13x4 and 12x4 and 12.25x3.75 props in the mail. I am learning how to land with such an aft CG much different than I am used to. I am hoping that my prop is the reason I don't have elevator athority. Thank You all for you help and input I really appriciate it. every message I get here gets me one step closer to hovering. Tim Busby

(in reply to jon595)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/15/2007 3:38:49 AM

Posts: 651
Joined: 4/30/2005
From: Galloway, NJ, USA
Status: offline

I just finished my Reactor with an OS .61 AUW 6LB 4OZ. cg at 4-3/4". Has anyone else powered one with a .61?

_____________________________

Chris Murphy
TEAM SKYBLAZERS.Focus II,QQ Yak, tigerII, Tiger60, Ice Point, Reactor, Futaba. OS ENGINES.

(in reply to ahook168)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/16/2007 7:12:36 PM

Posts: 429
Joined: 7/12/2003
From: Orlando, FL,
Status: offline

Mine has a Magnum .52 2 stroke and flies like a rocket. The way this plane is built, I believe a .61 is probably too much power. I'm sure you had to add weight to the tail to make it balance.

< Message edited by Planeclothes -- 11/16/2007 7:13:11 PM >

_____________________________

I'm only in it for the money...

(in reply to overbored77)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/17/2007 4:48:17 AM

Posts: 651
Joined: 4/30/2005
From: Galloway, NJ, USA
Status: offline

Planeclothes,
There is 1.5 oz in the tail. to get 4 3/4 cg.
Some history: This plane was given to me by a Pattern pilot, Setup for pattern
Dual elevator pushrods on a single high torque servo, And pull pull Rudder.
Servos mounted behind wing tube. Battery mounted aprox 8in behind
wing tube 1500 6cell. throttle servo mounted just in front of the others. Originally flown with
a Webra speed 50 it had unlimited vertical and would hover at about 3/4 throttle. 13x6 pattern
prop. It was given to me and all I had to do was mount the .61 in it which we did the math and
the wing loading was more than adequate. Plane weighed 5lb 6 oz. I added 8 oz to the plane
with the .61 and 1.5 oz of tail weight. So actually the plane comes in at the 6lb mark. I only
took the plane because I had the .61 so I hope it's not too overpowered, but the left stick works well.

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< Message edited by overbored77 -- 11/17/2007 4:54:23 AM >

_____________________________

Chris Murphy
TEAM SKYBLAZERS.Focus II,QQ Yak, tigerII, Tiger60, Ice Point, Reactor, Futaba. OS ENGINES.

(in reply to Planeclothes)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/20/2007 3:49:35 AM

Posts: 651
Joined: 4/30/2005
From: Galloway, NJ, USA
Status: offline

I took the reactor out sunday and put it up 5 times.

SPORT FLYING: Plane is very stable and flies well. will pull a vertical line at less than half throttle.
at 4 3/4 cg and low rates it could perform the intermediate pattern sequence with ease.

3D: With CG at reccomended location the plane would fall out of hovers, would not flatten for spins
would only harrier a short time before wings rocked and nose fell.

I am just learning 3D so what am I doing wrong? I know I need to move the CG back to about
5- 5 1/4 inches. I was using an APC 13x6 prop when she started to drop the nose in a hover if
I went full throttle it would pull out quite well. I was thinking to go to a 12x6 prop and I will be adding
more elevator throw as it only has about 2 inches now.

_____________________________

Chris Murphy
TEAM SKYBLAZERS.Focus II,QQ Yak, tigerII, Tiger60, Ice Point, Reactor, Futaba. OS ENGINES.

(in reply to overbored77)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/20/2007 4:33:13 AM

Posts: 311
Joined: 1/3/2004
From: Cabot, AR, USA
Status: offline

Just wondering how many of you guys have used the OS-70 Surpass? I am debating between this engine and the OS 55 AX with a tuned Pipe. I have never owned either engine so Iam on the fence trying to decide which to get as I am hoping to get this plane ordered in the next couple weeks.

(in reply to overbored77)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/20/2007 11:51:46 PM

Posts: 18
Joined: 3/8/2004
From: Virginia Beach, VA, USA
Status: offline

I'm looking at getting this plane and putting a Saito .62 in it. I have looked up all the servos mentioned previously in this thread. Some rated as not worthy for a .40 pattern/3D plane in other threads. The recommendations are for mini servos and the thread says that they are the easiest to install. I am looking at either the hitec 225mg or the hobbico cs-35mg which appear to be the same servo with different names. I think metal gears are the way to go on this plane but I am looking for real world experience and recommendations.

My question is how do these servos hold up long term in this plane. Are there other mini servos which are better? Thanks

< Message edited by starkms -- 11/20/2007 11:54:46 PM >

(in reply to TruBlu02)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/21/2007 1:02:57 AM

Posts: 429
Joined: 7/12/2003
From: Orlando, FL,
Status: offline

You are right about the CS-35MG, it is the same as the Hitec 225MG, except it is a little cheaper. I used those for ailerons, Hitec 425BBs for the elevator halves and Hitec 635 for rudder. They are all working fine for me.

_____________________________

I'm only in it for the money...

(in reply to starkms)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/26/2007 8:45:04 PM

Posts: 3166
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline

Overbored77, go to a 14x4W APC 3D type prop for best hovering and 3D stuff.

Ernie

(in reply to Planeclothes)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/28/2007 2:53:42 AM

Posts: 193
Joined: 1/13/2003
From: Barrie, ON, CANADA
Status: offline

Starkms

Go with the Saito .82 on a 14X5 rather than the .62. You don't want to under power this plane unless your just pattern flying. The 5 pitch still allows you to spool up nicely (a little better than many other engines I've found) and the 14 " provides better prop wash, thrust etc. for a better 3D.

If you note larger 3D planes, that we all aspire to, have higher prop pitchs since the engines can handle it and many manuevers utilize momentum. With all designs there are give and takes. The Reactor's thinner wing allows you to reach the stall point sooner at higher speeds but a thin wing has poorer slower speeds characteristics.

I've compensated by adding flapperons and Elevator/flap mixes for dynamics. I chase my Friends Mojo .82 and for the most part can keep up. We've flown each others planes and agree you can do more hover high alpha 3D more easily with the Mojo but better 3D in pattern manuevers with the Reactors that we just couldn't do with the Mojo.

I would recommend this plane for everyones stable. If you want a good all around plane, learning 3D or even as a second ship this is a plane to get. Just make sure to put in a lite engine that can spin as large a prop (14"

without compromising the weight.

I've not seen other planes in this class with so broad a flight envelope range. That's not a challenge to all just my opinion. Several of the guys at the field have other models in the similar class and they just don't seem to do as well. I don't entirely know why but it just is.

My specs: CG 5 1/4", Engine thrust line factory, Saito .82 spinning a 14X5, AUDW 5lbs 8 oz, Graphtec Landing Gear on 2" wheels for my grass field. Oh and Servo's HS5245MG all around which is over kill. I'm sure they helped when I put this into a high speed dive and hard pullout. It left everyone scratching their heads since they usually see me flying it in 3D mode.

(in reply to starkms)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/29/2007 7:34:27 PM

Posts: 18
Joined: 3/8/2004
From: Virginia Beach, VA, USA
Status: offline

MaxThrottle

Thanks for the input. I already have the Saito .62, perhaps I will eventually change it out for the Saito .82 as I become a more proficient flyer. This will be my second plane, I have a lot to learn yet before I can even attempt 3D. I'm planning on running either a 12X8 or a 13X6 prop, I'm not sure it would turn a 14X4. I didn't see any recommendations in the Reactor directions so I'll have to experiment a little.

(in reply to MaxThrottle)

RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 11/29/2007 8:46:07 PM

Posts: 5
Joined: 7/12/2007
From: Fort Worth, TX, USA
Status: offline

Ok, after reading 27 pages of praise and only a few some what negative comments about the Reactor, I've decided to order one. But, instead of putting the OS, Saito, or some other engine in it; I've decided to go electric, since I have two