logo
Thread Tools
This thread is privately moderated by TheTank, who may elect to delete unwanted replies.
Old 07-01-2016, 09:24 PM
Dirt Doctor is offline
Find More Posts by Dirt Doctor
Registered User
Dirt Doctor's Avatar
United States, MS, Vicksburg
Joined Jan 2015
536 Posts
That shoulder snap thingy can fool you. We had an unlimited pilot fly both a shoulder snap and a regular inverted snap back to back at one of the Clover Creek Judging Schools. The first time I saw a shoulder snap I knew it didn't look right but I couldn't put my finger on it! I wasn't the only one either! After the pilot doing many of them back to back we could eventually see the difference. Learning how to judge takes time just like learning how to fly the maneuvers!!
Dirt Doctor is offline Find More Posts by Dirt Doctor
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 07-04-2016, 08:40 PM
chymas is offline
Find More Posts by chymas
"Those Guys"
chymas's Avatar
United States, WA
Joined Dec 2011
669 Posts
Quote:
Originally Posted by wingwall View Post

Also, Clark, you should know that a "shoulder roll" is the application of opposite rudder from the direction of the roll. It commonly happens when pilots are first attempting to do a negative snap, and they push the rudder stick in the same direction as the aileron stick.
This would be a snap that then transitions to a shoulder roll - much like the negative snap you had mentioned (ail, rudder sticks same direction with down elevator) starting out in a positive snap - sticks same direction with up elevator and then going to down elevator is now right into the shoulder roll.

Bottom line - if the snap is done correctly the plane will be pitched towards the canopy whether the snap ends upright or inverted. As per the rules you are allowed an immediate correction in pitch and yaw following the snap with no deductions. This being applied to the downloop with a 1-1/2 snap on bottom the plane will be pitched down if the snap is performed correctly.
chymas is offline Find More Posts by chymas
Reply With Quote Quick reply to this message
Old 07-05-2016, 05:52 AM
kwilson is offline
Find More Posts by kwilson
Drone pilot since 1979
kwilson's Avatar
Jacksonville, FL
Joined May 2006
1,213 Posts
Quote:
Originally Posted by chymas View Post
This being applied to the downloop with a 1-1/2 snap on bottom the plane will be pitched down if the snap is performed correctly.
Not necessarily. Since a snap may have initial pitch departure occur prior to OR simultaneously with auto rotation, you may pull the nose up hard just before performing your 1 1/2 positive and when you exit, the plane will be just about level. This is a particularly useful procedure that is not really necessary until you hit advanced. It takes some practice, but once you get the hang of it, it will become second nature.
kwilson is offline Find More Posts by kwilson
Reply With Quote Quick reply to this message
Old 07-05-2016, 06:14 AM
JuStOnE is online now
Find More Posts by JuStOnE
1988 IAC Unlimited Champion
JuStOnE's Avatar
United States, PA, Lumberville
Joined Jul 2013
311 Posts
Quote:
Originally Posted by kwilson View Post
Not necessarily. Since a snap may have initial pitch departure occur prior to OR simultaneously with auto rotation, you may pull the nose up hard just before performing your 1 1/2 positive and when you exit, the plane will be just about level. This is a particularly useful procedure that is not really necessary until you hit advanced. It takes some practice, but once you get the hang of it, it will become second nature.
JuStOnE is online now Find More Posts by JuStOnE
Reply With Quote Quick reply to this message
Old 07-05-2016, 08:20 AM
bogan is offline
Find More Posts by bogan
Registered User
bogan's Avatar
Hamilton, New Zealand
Joined Jan 2006
302 Posts
Are you guys talking about snaps ... Or a bump n roll ? ;-)
bogan is offline Find More Posts by bogan
Reply With Quote Quick reply to this message
Old 07-05-2016, 02:53 PM
Badams is offline
Find More Posts by Badams
Work 2 days, Fly 5 days.
Badams's Avatar
United States, AZ
Joined Oct 2006
1,383 Posts
I think it's only called a bump n roll when you do it in the Southern Hemisphere.
Badams is offline Find More Posts by Badams
Reply With Quote Quick reply to this message
Old 11-18-2016, 06:28 AM
orthobird is offline
Find More Posts by orthobird
I hammer at 1500 feet
orthobird's Avatar
United States, LA, Shreveport
Joined Apr 2012
8,253 Posts
Hey, I never thought my post on doing a half roll on the bottom of a loop could create so much discussion....

ok, here is my next question..

what advice for doing a 4 of 8 on the top of a loop?
orthobird is offline Find More Posts by orthobird
Reply With Quote Quick reply to this message
Old 11-18-2016, 06:33 AM
kwilson is offline
Find More Posts by kwilson
Drone pilot since 1979
kwilson's Avatar
Jacksonville, FL
Joined May 2006
1,213 Posts
Use the same direction rudder input as you are rolling and keep it round.
Oh and practice!
kwilson is offline Find More Posts by kwilson
Reply With Quote Quick reply to this message
Old 11-18-2016, 06:58 AM
orthobird is offline
Find More Posts by orthobird
I hammer at 1500 feet
orthobird's Avatar
United States, LA, Shreveport
Joined Apr 2012
8,253 Posts
I see!! OK, thanks. Makes sense, if I went opposite, then it would not keep radius. Great advice!
orthobird is offline Find More Posts by orthobird
Reply With Quote Quick reply to this message
Old 11-18-2016, 07:31 AM
kwilson is offline
Find More Posts by kwilson
Drone pilot since 1979
kwilson's Avatar
Jacksonville, FL
Joined May 2006
1,213 Posts
Actually I was thinking of a loop starting inverted at the bottom and then rolling from upright to inverted at the top and finishing upright. I just looked at this years intermediate sequence and it is opposite of that, so you will need to use opposite rudder to keep it round.

Sorry to cause any confusion.
kwilson is offline Find More Posts by kwilson
Reply With Quote Quick reply to this message
Old 01-30-2017, 09:16 PM
orthobird is offline
Find More Posts by orthobird
I hammer at 1500 feet
orthobird's Avatar
United States, LA, Shreveport
Joined Apr 2012
8,253 Posts
Another question. IF there is a 270 roller, with 3 rolls in from inverted, if coming into the roller from left to right or right to left , the exit will be in Y - axis.

Entrance will be from X- axis.

You may already be knowing what I am about to ask, could one perform the roller by choice from the pilot, to either take the airplane in or out?
orthobird is offline Find More Posts by orthobird
Reply With Quote Quick reply to this message
Old 01-30-2017, 09:22 PM
Dean Bird is offline
Find More Posts by Dean Bird
Straight huckin' !!
Dean Bird's Avatar
Phoenix, AZ
Joined Jan 2006
1,613 Posts
Quote:
Originally Posted by orthobird View Post
Another question. IF there is a 270 roller, with 3 rolls in from inverted, if coming into the roller from left to right or right to left, the exit will be in Y-axis.

Entrance will be from X-axis.

You may already be knowing what I am about to ask, could one perform the roller by choice from the pilot, to either take the airplane in or out?
Absolutely. In Aresti the X-axis is directional. It must be flown in the direction shown. In Aresti the Y-axis is non-directional. You get to choose whether you finish going in or out.
Dean Bird is offline Find More Posts by Dean Bird
Reply With Quote Quick reply to this message
Old 01-30-2017, 10:22 PM
orthobird is offline
Find More Posts by orthobird
I hammer at 1500 feet
orthobird's Avatar
United States, LA, Shreveport
Joined Apr 2012
8,253 Posts
Thanks Dean, by the way, this is Cam!! It was really great meeting you this past weekend. We had a ton of fun.
orthobird is offline Find More Posts by orthobird
Reply With Quote Quick reply to this message
Old 01-31-2017, 10:44 AM
Nikolei Zinsli is offline
Find More Posts by Nikolei Zinsli
If it's R/C, I LIKE IT!
Nikolei Zinsli's Avatar
United States, NC, Raleigh
Joined Apr 2008
458 Posts
The same Cam from Lansing, MI area? Says you're in Shreveport...
Nikolei Zinsli is offline Find More Posts by Nikolei Zinsli
Reply With Quote Quick reply to this message
Old 01-31-2017, 10:51 AM
orthobird is offline
Find More Posts by orthobird
I hammer at 1500 feet
orthobird's Avatar
United States, LA, Shreveport
Joined Apr 2012
8,253 Posts
Oh nope!! Lol. My name is Cambize. Short is Cam. I live in Shreveport, Louisiana.
orthobird is offline Find More Posts by orthobird
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
IMAC North Central Judging/Flying Seminar at Muncie Professor NorthCentral 14 04-16-2008 08:48 AM
IMAC Rules - Requirement for a Realistic Pilot and Visible Panel b0Bro's dad Australia 68 01-09-2008 10:33 PM
Tucson Aerobatics Shootout 2007 Point Standings Kevin Tran General IMAC Discussions 131 08-07-2007 10:41 PM
IMAC in Puerto Rico WOODisGOOD General Discussion 35 06-14-2007 08:32 PM
TAS 2006 Point Standing Kevin Tran IMAC Competitions 105 07-31-2006 09:54 PM