inverted spin
 

This may not be the right forem for this, but I didn't see where it would fit anywhere else.

I have a four star 40. I have seen a video of a four star 40 doing an inverted spin, so I know it is possible.

Can you guys be kind enough to give me a run down on the manuever. There was a guy at the field telling me how to do it. I managed to get it twirling downward a couple of times, but I can't remember jack when I am at the field. I keep forgetting what he told me.

If someone could give me the run down maybe I can have to to get it soaked into my brain so I can try it again next weekend.


I appreciate it.

Thanks,

Wings

RE: inverted spin
 

Beginning from slow speed flight:
Lots of down, aileron into the spin, rudder into the spin, aft c.g. helps..
Then ease the aileron out towards neutral.

And don't forget to let everything go at a reasonable altitude for recovery.

RE: inverted spin
 

I've never tried it that way Paul. Sounds like fun.

I suppose it's the boring way but I always do it from inverted. Slow down and nose up with some extra down elevator and then just as it stalls I push the sticks either towards each other for a left spin or away from each other for a right spin while holding full down elevator. Some models work best with throttle and some at close to idle. Don't idle it completley or it may die. And like Paul said an aft CG that makes the model very close to neutrally stable is best.

Another way I enter them is a 1/2 loop and just before you hit the top with the nose up about 20 to 30 degrees jam the sticks as above for an inverted snap roll and hold it so it develops into a spin. If your engine is strong enough to keep it snapping then reduce power during the first snap.

RE: inverted spin
 

Here's a little card I had printed out back in the 1970's. This was before computer radios, before digitals, before dual aileron servos even. The stick positions still work.

My R/C Report column covers a maneuver every month. I just sent in spins for the July issue and I'll be doing inverted spins in the issue after that.

RE: inverted spin
 

Thanks for the chart Ed, I'll have to try the scrambler never of it before.
WYLDMAN

RE: inverted spin
 

Thank you all for your replies.

Ed, that chart is pretty cool! Where would I go to read your montly RC column?


Wings

RE: inverted spin
 

Ed Moorman, here is a puzzle for you. Some of the fun fly planes like the Pizazz will do it, others will not. At altitude, stall, full right rudder/idle, full up/left aileron. Start slowly crossing the aileron to the right and adding throttle. Develops into a beautiful stationary INVERTED flat spin. Why inverted when you have full up elevator? Rudder and engine torque maybe?

Ed M.

(Edit to change left rudder to right rudder. Don't know what I was thinking.)

RE: inverted spin
 

I've noticed in some spins with some planes, going from the up-elevator to enter the spin, doing the aileron thing, and then going to down elevator really increases the spin rate. Altitude goes away rapidly! :)
I -had- one plane which didn't care which way was up when it spun. It went in both upright and inverted! :(