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Old Jun 20, 2012, 08:08 PM
Team Aztech Aeromodels!
zmonster97's Avatar
United States, PA, Allentown
Joined May 2011
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Quote:
Originally Posted by tominator06 View Post
I know it's not designed for 3d. I'm looking for something to practice some precision flight. I have a few 48" planes for 3d now and just was thinking of rounding out the fleet a little bit. Funds are tight and I really am interested in the Byper so I may just wait for that.
Well if your looking for just precision, then I say go for the osiris.
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Old Jun 20, 2012, 08:09 PM
3DHS 'native'
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USA, TX, Spring
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vyper is pretty dang precise!!
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Old Jun 20, 2012, 08:09 PM
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United States, NE, Lincoln
Joined Mar 2011
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the 59" slick is pretty precise also FWIW
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Old Jun 20, 2012, 08:09 PM
Team Aztech Aeromodels!
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United States, PA, Allentown
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Originally Posted by going4speed View Post
vyper is pretty dang precise!!
I'm sure it is but, the osiris is preciser.
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Old Jun 20, 2012, 08:10 PM
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Fort Wayne
Joined Feb 2009
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Quote:
Originally Posted by tominator06 View Post
I know it's not designed for 3d. I'm looking for something to practice some precision flight. I have a few 48" planes for 3d now and just was thinking of rounding out the fleet a little bit. Funds are tight and I really am interested in the Byper so I may just wait for that. I know its not a precision plane but I just like it.
It sure isn't. And it flies like its on rails.
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Old Jun 20, 2012, 08:12 PM
3DHS 'native'
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USA, TX, Spring
Joined Jan 2008
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I have two in the closet still in boxes. I should break one out.

Quote:
Originally Posted by zmonster97 View Post
I'm sure it is but, the osiris is preciser.
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Old Jun 20, 2012, 08:12 PM
I fly, therefore, I crash!!!
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San Jose, CA
Joined Jan 2008
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Hey Jim....your or Joe's opinion of the nose heavy/tail heavy question about KE flight....

SteveT
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Old Jun 20, 2012, 08:14 PM
Team Hillbilly
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United States, MD, Dundalk
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Quote:
Originally Posted by going4speed View Post
vyper is pretty dang precise!!
Quote:
Originally Posted by nebwake View Post
the 59" slick is pretty precise also FWIW
Quote:
Originally Posted by zmonster97 View Post
I'm sure it is but, the osiris is preciser.
LOL! FWIW I was out just a little while ago practicing slow rolls, 4 point rolls, and one roll circles with my 48 Edge. Not exactly what it's designed for but I'm tweaking my low rates and it's not that bad. I can only imagine what a precision airframe would be like. I'm really digging the 3dhs osiris I downloaded for RF6.
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Old Jun 20, 2012, 08:18 PM
220lb of Canned Heat, baby
quadracer's Avatar
United States, IN, Derby
Joined Feb 2012
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Quote:
Originally Posted by tominator06 View Post
I know it's not designed for 3d. I'm looking for something to practice some precision flight. I have a few 48" planes for 3d now and just was thinking of rounding out the fleet a little bit. Funds are tight and I really am interested in the Byper so I may just wait for that. I know its not a precision plane but I just like it.
Just unbolt the top wing, and voila, a Vyper!
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Old Jun 20, 2012, 08:32 PM
Team 3DHS
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Nashville , Tennessee
Joined Jan 2009
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If you want to practice precision go for the 47".

If you get a 48" Super Vyper you will not resist how well it 3D's. The 47" is a line flying machine.

I loved my 47", it taught me a lot.

With these two airplanes its a win win situation!
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Old Jun 20, 2012, 08:33 PM
3DHS 'native'
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USA, TX, Spring
Joined Jan 2008
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man I never looked for an osiris in rf

Quote:
Originally Posted by tominator06 View Post
LOL! FWIW I was out just a little while ago practicing slow rolls, 4 point rolls, and one roll circles with my 48 Edge. Not exactly what it's designed for but I'm tweaking my low rates and it's not that bad. I can only imagine what a precision airframe would be like. I'm really digging the 3dhs osiris I downloaded for RF6.
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Old Jun 20, 2012, 08:37 PM
Wingman II
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United States, KY, Louisville
Joined Sep 2011
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Originally Posted by quadracer View Post
Just unbolt the top wing, and voila, a Vyper!
You finally get that 57 extra yet?
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Old Jun 20, 2012, 08:43 PM
Team 3DHS
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United States, IN, Fort Wayne
Joined Nov 2008
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Quote:
Originally Posted by SteveT. View Post
Hey Jim....your or Joe's opinion of the nose heavy/tail heavy question about KE flight....

SteveT

Most 3dhs planes are designed to have little to no KE coupling at a certain CG. You can adjust CG to get perfect KE and this will also be the prefered CG that the designer chooses. Some really poorly designed airframes will have KE coupling regardless of the CG.

If the plane is tucking towards the gear, it is tail heavy.
If the plane is tucking towards the canopy, it is nose heavy.


This all has to do with elev. trim. For example, a tail heavy plane will want to climb, so you trim in a few clicks of down elevator. Then when you roll to KE, the down trim in the elevator causes the plane to tuck towards the landing gear.


Always try to fix KE coupling with CG. If it gets to the point where CG isn't going to fix the coupling, or if you don't like the way the plane flys at the "preferred" CG then just find the CG you like and use the radio to mix out the coupling.
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Old Jun 20, 2012, 08:45 PM
customstandoffs
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USA, AL, Madison
Joined Dec 2007
8,547 Posts
If the plane is nose heavy and you trim it for level flight you will need to trim in up elevator to keep the nose from dropping. Now when you roll inverted you have the weight of the nose pulling it down and also up elevator pulling it down so it dives while inverted.

Roll knife edge, you are counteracting the heavy nose with rudder so that goes away but the plane is still trimmed with up elevator so it will pull to the canopy.

This is of course ignoring anything in the design or build that might have an effect.
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Old Jun 20, 2012, 08:51 PM
On loan to Texas
Ohio AV8TOR's Avatar
United States, TX, Benbrook
Joined Oct 2005
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Originally Posted by Park_aviator View Post
I have the cash, but last time I checked, they weren't in stock. So no
Too bad, I was hoping to drive up and see it fly.
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