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  #1  
Old 09-29-2018, 08:55 AM
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Plumbmaster Plumbmaster is offline
 
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Default RV6A Loops 101

I'm looking for some step by step input for dong a loop in my RV6A. Powered by a 160 HP O320 with a constant speed prop but without inverted oil and fuel, I'm looking for the prop setting, entry speed, initial "G" pull, stick movement at various stages etc. I've joined the IAC and have made one acquaintance, but he's flying a different type aircraft, has inverted oil, fuel injection etc. Thus I would like to get some model specific input if possible.
The purpose here is to start a conversation about primary aerobatics only. This is not for instructional purposes and should not be used as such.
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Ron Lem
"Stubbs"
1995 RV6A N89PC Bought In 2018
160 HP O320, CS Hartzell Prop
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  #2  
Old 09-29-2018, 10:07 AM
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titanhank titanhank is offline
 
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Rv-6
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  #3  
Old 09-29-2018, 10:11 AM
rv7charlie rv7charlie is online now
 
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Hi Ron,

To modify an old joke about high dollar purchases, "If you gotta ask, don't."

Seriously, don't try to teach yourself acro in an RV. At minimum, get someone who has experience to fly with you, or get instruction from a pro if you can afford it. Doing a loop in an RV is easier and simpler that a lot of other planes, but if you 'fall out' of a maneuver, the plane can overspeed much quicker than more traditional acro a/c. Years ago, a friend tried to teach himself acro in a homebuilt with similar performance and killed himself.

Having said that, I'll answer your question. In my fixed pitch 160hp RV-4, I do all the basic variations on loops and rolls starting at cruise power, and rarely if ever touch the throttle during a maneuver, even on the back side of a loop. With a c/s prop, the burden of throttle management is even less.

FWIW,

Charlie
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  #4  
Old 09-29-2018, 11:53 AM
luddite42 luddite42 is offline
 
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After some basic aerobatic training, your question will be self-evident even if you did not train in an RV.
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  #5  
Old 09-29-2018, 04:03 PM
gottawork gottawork is offline
 
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https://video.eaa.org/detail/videos/...autoStart=true
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  #6  
Old 09-30-2018, 04:48 PM
penguin penguin is offline
 
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From cruise speed, pull the stick back until only blue is visible outside.
Continue to pull until only brown visible, pull some more until the normal attitude is back. Stop pulling. Keeps the wings level.
If more detailed instructions are required take some training.

Initial speed is not critical, the amount you pull is. Modulating the pull as the picture changes from blue to brown is also important. Best way to find out is get someone to show you. Teaching yourself can be (very) unhealthy.
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  #7  
Old 09-30-2018, 05:49 PM
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RV8JD RV8JD is offline
 
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Read Van's article, "An Aerobatic Epistle":

http://www.vansairforce.net/safety/A...ticEpistle.pdf
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(Pic 1),(Pic 2)
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  #8  
Old 10-01-2018, 08:48 AM
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Snowflake Snowflake is offline
 
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Quote:
Originally Posted by penguin View Post
From cruise speed, pull the stick back until only blue is visible outside.
Continue to pull until only brown visible, pull some more until the normal attitude is back. Stop pulling. Keeps the wings level.
If more detailed instructions are required take some training.
Please do not follow this advice. Constantly increasing the pull all the way around with no reference to G is a good way to stall or snap roll off the top unexpectedly.
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Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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  #9  
Old 10-02-2018, 12:09 PM
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smokyray smokyray is offline
 
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Default Over the Top...

Quote:
Originally Posted by Plumbmaster View Post
I'm looking for some step by step input for dong a loop in my RV6A. Powered by a 160 HP O320 with a constant speed prop but without inverted oil and fuel, I'm looking for the prop setting, entry speed, initial "G" pull, stick movement at various stages etc. I've joined the IAC and have made one acquaintance, but he's flying a different type aircraft, has inverted oil, fuel injection etc. Thus I would like to get some model specific input if possible.
The purpose here is to start a conversation about primary aerobatics only. This is not for instructional purposes and should not be used as such.
Ron
Several good posts above.
Bottom line, after 25 years of positive G (non inverted fuel/oil) aerobatics in my RV4/HR2 and RVX plus a few years (25) in the F16, my advice? (like you've heard before), Get some training!
Not that the level of difficulty is high, but RV's build up speed quickly with the nose buried and a demonstration of a few basics will help.
There are several RV guys out there and experienced CFI's who might give you some basic Acro instruction, Patty Wagstaff for one...

But hey Mav, if nobody else will will fly with you, let me know...

https://youtu.be/LgrVhdZde5U
RVX Basic Acro 101...

V/R
Smokey

Last edited by smokyray : 10-02-2018 at 12:26 PM.
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