Aerobatics 2 - the Peking Eight

Dereck · Feb 18, 2002, 07:13 PM

So called because its a cheap rip-off of the venerated Cuban Eight.

Needed - model that can fly through a big Cuban 8 like it's normal. Also needs to be able to snap clean from a relatively low speed, and pretty fast.

Method - fly the first partial inside loop as for a Cuban Eight, but stop a tad short of the usual 45 deg nose down line - 30 deg down works. Perform a positive snap and a half where the Cuban's half aileron roll happens.

Power up and into the second partial inside loop. Repeat the snap and a half on the 30 degree downline coming off that partial inside, exit in level flight as per the Cuban Eight.

Figure should be symmetrical, cross over in front of you, entry and exit at same height, same heading. Works about the same from an upwind or downwind entry.

Guaranteed to confuse wetties who think some electrics can actually climb a little

Norm · Feb 18, 2002, 09:17 PM

Should be easy for me Dereck as my snaps often end up as a snap and a half anyway.

Norm

Looooeeee! · Feb 19, 2002, 01:22 AM

Dereck

Can light floaty parky aerobats with thick, soft leading edge funfly airfoils do snaps, as my plane can loop it's wings off? My CG is somewhat rearward.

Looee

Dereck · Feb 19, 2002, 07:38 AM

Hi Looee
Easy way to find out. Get some insurance (about three mistakes high's worth

), wind up to full speed, pull full up hard and into full rudder. If you get nothing beyond aggressive looking barrel rolls, chances are it won't.

I've seen a Todd Long Tiny do some very interesting gyrations that almost certainly included a snap or two, so Parkies sure can do aeros. Shame about it hitting the wall just after, but it looked good for a while.

GWRIGHT · Feb 19, 2002, 08:34 AM

A good variation on the cuban 8/peking 8, assuming you've got enough speed/power to do it really BIG,.. is 1 and a quarter snaps to knife edge on the downline, slight pause, then one and a quarter snaps to upright, repeat on the other downline,.. also,.. you can do 2 points of a 4-point,.. then a full snap. There's LOTS of variations on the cuban. A really fun one,.. that taxes the brain is to do the cuban as basically two square loops (square cuban 8),.. Then add 1/2 roll on each of the 8 "sides",.. then vary it a bit more by making it 1 and a half snaps on each of the eight sides of the square cuban. That takes a lot of rudder work to re-establish the line after each snap, so it takes a while to get it right,.. lotsa fun to work on though.

Feb 18, 2002, 07:13 PM	#1
Dereck Visitor from Reality United States, IL, Chicago Joined Dec 1996 12,654 Posts	Aerobatics 2 - the Peking Eight So called because its a cheap rip-off of the venerated Cuban Eight. Needed - model that can fly through a big Cuban 8 like it's normal. Also needs to be able to snap clean from a relatively low speed, and pretty fast. Method - fly the first partial inside loop as for a Cuban Eight, but stop a tad short of the usual 45 deg nose down line - 30 deg down works. Perform a positive snap and a half where the Cuban's half aileron roll happens. Power up and into the second partial inside loop. Repeat the snap and a half on the 30 degree downline coming off that partial inside, exit in level flight as per the Cuban Eight. Figure should be symmetrical, cross over in front of you, entry and exit at same height, same heading. Works about the same from an upwind or downwind entry. Guaranteed to confuse wetties who think some electrics can actually climb a little

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Feb 18, 2002, 09:17 PM	#2
Norm Registered User Oak Harbor, Washington, United States Joined Jan 2001 1,180 Posts	Should be easy for me Dereck as my snaps often end up as a snap and a half anyway. Norm

Feb 19, 2002, 01:22 AM	#3
Looooeeee! Heli Bouncer At the Discount Clambake Joined Feb 2001 3,916 Posts	Dereck Can light floaty parky aerobats with thick, soft leading edge funfly airfoils do snaps, as my plane can loop it's wings off? My CG is somewhat rearward. Looee

Feb 19, 2002, 07:38 AM	#4
Dereck Visitor from Reality United States, IL, Chicago Joined Dec 1996 12,654 Posts	Hi Looee Easy way to find out. Get some insurance (about three mistakes high's worth ), wind up to full speed, pull full up hard and into full rudder. If you get nothing beyond aggressive looking barrel rolls, chances are it won't. I've seen a Todd Long Tiny do some very interesting gyrations that almost certainly included a snap or two, so Parkies sure can do aeros. Shame about it hitting the wall just after, but it looked good for a while.

Feb 19, 2002, 08:34 AM	#5
GWRIGHT Registered User United States Joined May 2000 5,051 Posts	A good variation on the cuban 8/peking 8, assuming you've got enough speed/power to do it really BIG,.. is 1 and a quarter snaps to knife edge on the downline, slight pause, then one and a quarter snaps to upright, repeat on the other downline,.. also,.. you can do 2 points of a 4-point,.. then a full snap. There's LOTS of variations on the cuban. A really fun one,.. that taxes the brain is to do the cuban as basically two square loops (square cuban 8),.. Then add 1/2 roll on each of the 8 "sides",.. then vary it a bit more by making it 1 and a half snaps on each of the eight sides of the square cuban. That takes a lot of rudder work to re-establish the line after each snap, so it takes a while to get it right,.. lotsa fun to work on though.