When to "Draw a Line"?
 

Allright Guys,

After several years of SAYING I am going to get back into flying more and doing my first IMAC contest I AM going to actually do it this year. I have a highly modified 33% Lanier Extra and a 33% H9 Cap almost ready to fly.

I have been practicing the basic sequence on G4 etc and am starting to come up with questions. Here's the first of many I am sure:

When do you "draw a line" and when do you immediately go into a roll etc? I seem to remember being told you always draw a line except when you are doing a ... but i can't remember the specifics.

I hope my question maes sense.

Thanks in advance!!!!

Scott

RE: When to "Draw a Line"?
 

IMAC is all about drawing a line.

Draw a line before and after every manuever. If you are not doing a loop of any kind you will be drawing lines in the manuevers as well.

all rolls should be centered on the line.

RE: When to "Draw a Line"?
 

Thanks for the reply,

I certainly understand between the maneuvers drawing a line... I guess what I am asking about is like in a half reversed cuban 8 or a reversed sharks tooth on the 45 uplines ... I assume its draw a 45, half roll, and draw the 45 again before pulling.... but I THOUGHT I had been told of an example where it would be draw a line, roll and then go right into a pull without drawing a line again.

Thanks again!

Scott

RE: When to "Draw a Line"?
 

maneuvers are centered on the line.
ie in a half Cuban eight you do a 5/8 loop on the 45 down line you count one thousand one, one thousand two, then do the one half rool, count two seconds again the pull to level flight.
Draw a line to the next maneuver.

RE: When to "Draw a Line"?
 

I believe you are referring to an Immelman and a Split-S...

Immelman - Pull 1/2 loop then immediate 1/2 roll on exit

Split-S - Perform 1/2 roll then immediate pull 1/2 loop and exit

There are many roll variation and more about the downgrade associated for not rolling / exiting properly...

Larry Diamond

RE: When to "Draw a Line"?
 

Chipper,

If you haven't already, you may want to look at the IMAC site:

http://www.mini-iac.com/DesktopDefault.aspx

In Basic you can review the Aresti and also look at the write up for Basic and Sportsman for 2007.

For Basic, it looks like we had an Immelman in Figure #9 (Half Loop) in 2007. It doesn't look like we have the Split-S or Immelman for 2008 in Basic.

I hope to fly my second IMAC contest this year...been a bit slow for me getting to them. We shall see. I would be flying basic....

Larry Diamond

RE: When to "Draw a Line"?
 

If you can, try to attend an IMAC judging school in your area. It will help immeasurably in your understanding of the requirements of all the maneuvers. In fact it will make you aware of just how much you don't know. At least it did in my case.

Dennis

RE: When to "Draw a Line"?
 

I thought IMAC lines were distance not time, on a vertical line for sure, you want the same distance not time on the before and after lines correct?

RE: When to "Draw a Line"?
 

Mflander......You are perfectly correct. The LINE is what needs to be equal...... Obviously, on a vertical up-line (or even a 45° up-line), gravity is slowing down the aircraft, so regardless of what method a pilot uses to make both lines equal, he/she has to take into consideration that the aircraft is slowing down when it's going up.

Wayne
IMAC Judging Instructor

RE: When to "Draw a Line"?
 

No rule on how long your line is. By distance or time.

Of course the ground will limit the length of your downline. Just remember every manuever is a geometric display. Radius or turns or circles need to be the same. Roll rates need to be the same, downline/uplines need to be the same........this is all for each manuever. You can vary them in each different manuever but for one specific you need to keep things constant.

Oh---and have fun.

RE: When to "Draw a Line"?
 

Might not be a specific rule, but the maneuvers need to be centered on the line. So a 45 degree upline with a half roll needs to have the same distanced on the line before and after the half roll. I just wanted to clarify this because counting was mentioned earlier and that might not be a concrete way to time it. I'm sure it works fine assuming you have a constant speed.

RE: When to "Draw a Line"?
 

I think I know what you are referring to, in the IMAC rules it says "The
rolls on vertical and 45 degree lines must be centered, except for
roll(s) following a spin. If there is a roll or rolls at the apex of the
loop, the roll must be centered in the loop and flown on the arc of the
loop itself."

Hope this helps,

Isabel

RE: When to "Draw a Line"?
 

Sweetpea01...... I am SURE that you were generalizing & that you already knew this..... but it probably can be mistakenly understood, regarding "downline/uplines need to be the same".

Figure N's, Hammerheads, Tailslides, Humpty Bumps, Laydown Humpty's definitely do NOT have to have the same length of up/down lines. Any elements on these lines have to be centered.

I know that you knew that already, but your explanation could be misconstrued.
Wayne
IMAC Judging Instructor

RE: When to "Draw a Line"?
 

Thanks Wayne.....

I generalized a little too much.