RE: Rookie II setup tips required.
 

Hi Carbuncle!

What's that story about not flat-spinning to it's right? I have talked to a friend who has flown a Harpoon with re-fitted Canards and yaw-vectoring for about two or three years now (flown it at the FAI world grand prix 2005 in Al-Ain). He told me that there is no difference between flatspins lefthandeor righthanded. Just don't throttle back for recovery! Use yaw-vectoring to the opposite side untill it stops rotation completely.... Have you ever tried that?

BR,

David

RE: Rookie II setup tips required.
 

Yes, right hand spins can be done but my rookie1 (no canards) and rookie2 take a little more time and effort to get out of a spin to the right (or counterclockwise veiwed from under), upright is easier than inverted.. And yes I always kick opposite rudder with yaw vector and power out level or up. I don't like diveing out of spins. I use jetcat titans and powering out is not a prob and is less scary than diveing. I can spin to the right, I just feel safer going left. After having spun both ways and noticing the difference I then talked to other jet guys who had reported this same situation. They said gyroscopic effects of the turbine make the jet want to yaw and roll right just a little more than left and if your powering up it is more noticable. But even 2 of the same type rookie jets will not act the same, one big factor is alignment of the turbine and vector pipe.. if a guy installs the turbine and/or vector pipe with just a hair of left yaw thrust alignment it will counteract this effect... another small factor in this situation is lateral balancing which can also help or hurt the spin recovery effects to a small degree. Other jet guys have discussed this gyroscopic effect on spin recovery here in rcu before, so this is not just a theory of mine..

RE: Rookie II setup tips required.
 

Some of your questions may be answered in my last reply but I'll make sure .., I use jetcat titans. To get in a spin I just go up to a stall while powering back, give it rudder and yaw the direction I want it to spin, add elevator up for upright spin or down for inverted, to get out I give it opposite rudder and yaw then full power out level or up.. You can recovery without vectoring but it will be a diveing recovery like a prop plane and I don't like that myself.. I don't really know a lot about other jet's spin characteristics other than a rookie because I see no reason to have any other type jet.. haha ---ROOKIES RULE,, but the canards don't have much to do with stalls or spins but they do help it out a bit.. To practice spins or stalls go up as high as you can, if it gets stuck or won't power out let go of the sticks or point the nose down, let it get speed then ease inputs in to recover..

RE: Rookie II setup tips required.
 

The reason is that when spinning upright, gyroscopic precession attempts to force the nose upwards therebye making recovery more difficult when in a right handed spin. Left handed spins have the advantage of the nose trying to be forced down-wards, aiding recovery. But with the two way vectored nozzle, I can't see it making much difference as you should have plenty of yaw authority to instantly null any yaw rate.

RE: Rookie II setup tips required.
 

Yes Wocket, I think you were the 1st guy I saw talking about this a couple of years ago, thnx.... and yes with vectoring it is easy to get out of a spin but I still just prefer to go left, just in case.... I don't do a lot of spins much anymore tho anyway as it seemed to be causeing probs for my turbines, as was told to me by jetcat..

RE: Rookie II setup tips required.
 

Hi Ken, I'm very pleased with my Rookie II, lots of potential, I'm interested in your smoke tank setup, any pics ?

Rob.

RE: Rookie II setup tips required.
 

Rob,

I'm using two Sullivan 12oz Oval Tanks (located just behind either side of the air brake). They are in series with the vent line going all the way to the back of the engine bay. Any residual smoke oil that will drip out wont get on the airframe. The fill line has a quick disconnect. When I'm done filling, I reconnect it to the line going directly to an old JetCat pump. The line from the pump to the smoke injector tube is the same 4mm tubing as the fuel line to the turbine. My smoke is on a slider switch on my Tx and I think I need to add another smoke injector tube to get the desired amount of smoke out the back. My home made smoke system is OK right now, but it could be better if I put a tee in to get twice the smoke oil into the thrust stream.

http://www2.towerhobbies.com/cgi-bin...?&I=LXFU59&P=7

Ken

RE: Rookie II setup tips required.
 

Thanks for the info Ken, I've spied lots of hidey holes where a twin tank setup can sit, even right on the CG just in front of the retract wells.

Ive used a similar pump and fuel line setup to yours for many years, gives tons of smoke with a single nozzle. I've a nice light 800 Lipo that should do the trick.

Your smoke looks plenty to me.

Cheers

Rob.

RE: Rookie II setup tips required.
 

24oz dubro's fit nicely... I've got 1 on each side beside the front half of fuel tank in my rook2.

RE: Rookie II setup tips required.
 

[/quote]
24oz dubro's fit nicely... I've got 1 on each side beside the front half of fuel tank in my rook2.
[/quote]

How do you find the extra weight affects handling being forward of the CG?

Rob

RE: Rookie II setup tips required.
 

I do not notice it at all other than it seems to help nose steering on take-off and take-off run is 20 feet further (on grass strip)... take-off just feels a little heavier but once its up and going there is not much difference., I fly the first couple of minutes fairly conservative as I burn off about half the smoke and some fuel, then do most of the radical stunts at the mid and end of the flt.