Knife edge loop
 

Got to wondering what's the best way to come out of the down side of a knife edge loop, full power, power off or something in between? Want to play with it next time I get out, but that won't be for a couple of days, figured I'd post it and maybe get a head start.

Mike

RE: Knife edge loop
 

It will vary from plane to plane, but in general you'll move to full rudder by the 270 point, and use the throttle as necessary to make the backside/downside smooth and uniform.

Too much and you'll rotate out, too little and you'll rebuild... :)

RE: Knife edge loop
 

left stick in upper corner. smoke should be on before entering ke :D

RE: Knife edge loop
 

I'm going into my AFP sim to try it out. BRB. :D

RE: Knife edge loop
 

aka Pinwheel;)

RE: Knife edge loop
 

Not quite a pinweel is it? Pinweel would compare to a heli doing a 360 stall turn or a 540 right?

But the knife edge loop can be done in a similar fashion on a lot of planes that struggle to go past the 270 to 360 quick enough. I've also found that all my planes that can do it does it differently. Some like when you go through at half power and some more. Different tricks with every bird except if you are flying something like a huge pattern or large scale I think it might be different. Smaller planes get very twitchy sometimes in the last bit. O and remember to for the first stretch out the upward leg from entry to get some safe height up the top. You come down much faster than you go up :D

This was speaking from mostly profile planes I have flown and am sure that it is not all directly related to your plane. Hope I was able to help. Oh and be sure of one thing, be wide awake on the aileron and elevator. I've been caught out a couple of times. One more thing! Make sure your plane is flutter proof. Throttle on the down leg can never be a good idea in my opinion. If anyone cares to correct me please do? I am also just learning. :)

RE: Knife edge loop
 

I'm presently trying it with a Sledge, I have noticed that it seems to roll out at about 270 under full power with the rudder on low rates. Want to try it with my Hard Bet next time I get that out. I've done them before with a couple of my own design 3D electrics, but they were on high rates at full power, it was more of a pinwheel than a loop, probably about 3 or 4 feet in diameter. AFP's a good idea, have to mess with it there. Thanks for the input.

Mike

RE: Knife edge loop
 

I was able to do 2 loops on AFP sim. The problem is that you can't see the plane when have to go that high and you are viewing it sideways. But it does NOT need much rudder on the up leg, and a ton of rudder and throttle at the 270 position of the loop. Not an easy manuever. Only planes with lots of rudder authority can pull this off IMO. Plus a bigger plane should do it much better than the twitchy, coupling plagued 40 sized ARF's. I used a giant ARF on AFP.

RE: Knife edge loop
 

Throttle on the downside is pretty much mandatory. Without the thrust and propwash you just cant pull it off symmetrically.

Without throttle, you can do a big figure 9 if you go high enough...

RE: Knife edge loop
 

Throttle and rudder also depends on the plane.Planes that are good at it like the Capiche 50 for example will pull out easily with no throttle and low rate rudder

RE: Knife edge loop
 

Sorry for the confusing bit there Warren. The throttle statement was connected to the flutter issue.
Throttle is definitely mandatory.

RE: Knife edge loop
 

Gotcha. ;)