Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Oct 22, 2009, 07:28 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
Quote:
Originally Posted by moxjett
Because I'm putting the same motor in my 70" Slick as I have in my Reactor. Wing area is wing area.
If wing area is wing area why bother with cubic loading?
mexico is offline Find More Posts by mexico
Reply With Quote
Sign up now
to remove ads between posts
Old Oct 22, 2009, 09:50 AM
Pug Pilot
moxjett's Avatar
Wichita, Kansas
Joined Dec 2004
800 Posts
...
moxjett is offline Find More Posts by moxjett
Last edited by moxjett; Oct 22, 2009 at 05:17 PM.
Reply With Quote
Old Oct 22, 2009, 09:52 AM
Major Electron Addiction
USA, NC, Wilmington
Joined Aug 2006
568 Posts
Quote:
Originally Posted by moxjett
Both planes below use about the same size motor. Numbers look good to me for the Reactor Bipe.

Reactor .61 Bipe Wing Loading
1145 in2 144 = 7.95 ft2
7.5 lbs x 16 = 120 oz.
120 oz. 7.95 ft2 = 15.09 oz./ft2

3DHS 70" Slick Wing Loading
950 in2 144 = 6.60 ft2
9 lbs x 16 = 144 oz.
144 oz. 6.60 ft2 = 21.81 oz./ft2
I had actually come up with the same conclusion, looking for a plane and power system to use all of my 5000ma 6s packs from the 87" Extra.
rodsmith123 is offline Find More Posts by rodsmith123
Reply With Quote
Old Oct 22, 2009, 10:23 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
Quote:
Originally Posted by moxjett
You're just to smart for me. I do know what the Ignore button can do for me.
No need to hit it. I'm done.
mexico is offline Find More Posts by mexico
Reply With Quote
Old Oct 22, 2009, 01:08 PM
Registered User
stanordave's Avatar
Joined Jan 2006
2,352 Posts
The bipe flies fine for me w/a 6 cell 5000ma and a turnigy SK 5065-380 using a 16x12 at 5000' plus elevation.
stanordave is offline Find More Posts by stanordave
Reply With Quote
Old Oct 22, 2009, 02:38 PM
Pug Pilot
moxjett's Avatar
Wichita, Kansas
Joined Dec 2004
800 Posts
...
moxjett is offline Find More Posts by moxjett
Last edited by moxjett; Oct 22, 2009 at 05:17 PM.
Reply With Quote
Old Oct 22, 2009, 03:45 PM
Registered User
Dennis C's Avatar
Grass Valley California
Joined Jun 2004
2,458 Posts
A hornets nest, I just can not resist jumping in, flame suit on.

Actually wing aria is not the same comparing a bipe to a mono plane, the bipe's wings are not as efficient as a mono plane, the high pressure on the bottom of the top wing will interfere with the low pressure on the top of the bottom wing, depending on the gap between the wings it can be a big difference. The closer the wings are together in relationship to cord the less efficient the wings on a bipe.

We use cubic loading to compare the wing loading of planes of different sizes. A 100cc gasser with a wing loading of 30oz/sq ft will fly floatier than a 60 size model with a 20oz wing loading.

Just my 2c
Dennis
Dennis C is offline Find More Posts by Dennis C
Reply With Quote
Old Oct 22, 2009, 04:54 PM
Registered User
Dennis C's Avatar
Grass Valley California
Joined Jun 2004
2,458 Posts
Great review, the reactor look's good.

What mixes did you use? knife edge looked very solid

Dennis
Dennis C is offline Find More Posts by Dennis C
Reply With Quote
Old Oct 22, 2009, 06:38 PM
KK6MQJ
Bajora's Avatar
Joined Sep 2004
13,600 Posts
NO mixes set up for the coupling. I tend to just "fly" it through when in the knife edge. I think I mentioned in the review that mine would pull towards the gear as the rudder deflection increased? At small rudder deflections, I feel the coupling is really minimal with this one.
Bajora is offline Find More Posts by Bajora
RCG Plus Member
Latest blog entry: E-flite Allusive 2.2M
Reply With Quote
Old Oct 22, 2009, 06:59 PM
"I Am The Animal!" in training
helifryer's Avatar
Winston-Salem, NC
Joined Sep 2008
1,008 Posts
hey barnes! could you please tell me where/how to get ahold of one of those RCGroups stickers?
helifryer is offline Find More Posts by helifryer
Reply With Quote
Old Oct 22, 2009, 07:35 PM
Registered User
Joined Jan 2005
469 Posts
I'm just finishing up my Reactor Bipe, what a long build. I'm a slow assembler, must have taken me 50 hours. I did have more issues than the reviewer, not the greatest quality control from Great Planes.

I'm using 3300 6S Hyperion 35C, Rimfire .80 and Castle Phoenix Ice 100. So I'm not using a separate receiver battery or BEC. Saves a few ounces, mine came out at 7lbs, 1 oz.

I will have to assemble mine at the field for space reasons. This bipe isn't the easiest for that, and it took a lot of servo wires to make it work.

One thing I noticed that surprised me, mine is pretty nose heavy. With the lipo moved to the back of the battery tray the balance is very slightly forward of the middle balance point. I will have to add a bit of tail weight if I want to move to the aft balance point.
malcolmm is offline Find More Posts by malcolmm
Reply With Quote
Old Oct 22, 2009, 07:51 PM
KK6MQJ
Bajora's Avatar
Joined Sep 2004
13,600 Posts
Helifryer ...

Those were sent to us as reviewers. I am not even sure I can get any more, as that was the last one I had. But I'll PM the boss and see if she has any more!
Bajora is offline Find More Posts by Bajora
RCG Plus Member
Latest blog entry: E-flite Allusive 2.2M
Reply With Quote
Old Oct 22, 2009, 08:46 PM
"I Am The Animal!" in training
helifryer's Avatar
Winston-Salem, NC
Joined Sep 2008
1,008 Posts
oh. well thanks for letting me know

if its possible to get ahold of a few more of em, i would happily buy a few!

please shoot me a PM if u find anything out

thanks a lot
Heli
helifryer is offline Find More Posts by helifryer
Reply With Quote
Old Oct 25, 2009, 10:07 AM
Jim
Indiana
Joined Jun 2009
10 Posts
Motor Timing?

Where should I have the timing set for my RimFire .80? It makes a funny noise when I hit full throttle fast if I go slow it does not make the noise, motor is pulling 48.5 amps at full throttle.
Jim5528 is offline Find More Posts by Jim5528
Reply With Quote
Old Oct 25, 2009, 12:16 PM
Registered User
Joined Jan 2005
469 Posts
I flew my Reactor for the first time yesterday, about six flights.

It flew with very little trim adjustment, a couple of clicks of aileron and a couple of clicks of down elevator. Overall it was very successful, as others have said it flies just like the little one, only better, same characteristics.

With the recommended electric setup mine required about 2 oz of tailweight it get it to where I like it, requiring only a small about of down elevator to maintain level inverted flight.

Like the small one, it is excels at harriers. I'm not much on inverted harriers, but upright is rock free and very easy to do. With a light breeze of approximately 5 mph, it harriers so easily you can hold it stationary at about a 45 degree angle for as long as you want. The power is reasonable, definitely not overpowered. I'm using the recommended for 3D 15 x 6. I get about 7 minute flights, with around 35 - 40% remaining on my 6S 3300, I guess I can go to 8 minute flights.

As expected, assembling and disassembling it is a pain. I will have to get some tools to make it quicker, most importantly as 4-40 hex driver. But it all works, and it works very well, and it looks great in the air.
malcolmm is offline Find More Posts by malcolmm
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Article Great Planes Revolver GP/EP Sport Aerobatic ARF Review kevin Sport Planes 595 Mar 26, 2013 12:10 AM
Question Will AXI 4120/xx fit Grate Planes Reactor .46 GP/EP T.Rex.450 3D Flying 1 Aug 23, 2008 03:05 AM
Video Great Planes Reactor Bipe Maiden moxjett Electric Plane Talk 1 Mar 28, 2008 01:48 PM
Article Great Planes Performance Series Giant Scale Cap 3D ARF Review w/ OS 160 Steve H. Fuel Plane Talk 6 Jun 28, 2006 02:56 PM
Great Planes Mfg. Fun Force EP Sport Combat Foam ARFs Dave Lauck Product Announcements 0 Aug 23, 2005 01:36 PM