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CarbonXtreme . Midland Helicopters . HeliProz

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Aerobatic 3D Contest > What is a crack roll?
 
 
cwright
Veteran
Location: Blossvale New York

I saw an add for some servos and it says that these servos are what makes a crack roll possible. What exactly is that? Thanks Chuck
10-15-2007 11:33 PM
 
 
HOTROD2
Senior Heliman
Location: East Tennessee-USA

It's when you do a roll any other maneuver and shake the sticks so fast, using a fast servo, that the heli seems to shake through the entire maneuver like its on crack! Check out the 2007 Ircha coverage on RR, there is some video showing the heli and sticks at the same time.

T-rex 600N, EVO 50, T-rex 450 x2, DX7
10-16-2007 02:19 AM
 
 
Dood
Elite Veteran
Location: America's Dairyland

Wasnt Matt Botos one of the first guys to do "crack"?

Check out this (shortened) video clip of Szabo Jr.
http://www.livevideo.com/video/03E3...-the-coole.aspx

I've heard of people calling this a "Botos Roll".

For a crack roll, its shaking the cyclic stick, right?
So, what do you call it when you just shake the rudder stick?
10-16-2007 03:59 AM
HOMEPAGE  
 
 
MolokaiBoy
Veteran
Location: Kailua-Kona,Hawaii USA

Quote 
So, what do you call it when you just shake the rudder stick?

I think I would call it a pirocrack!

And if used elevator than I guess elecrack or crackavator.

Les
10-16-2007 06:56 AM
HOMEPAGE  
 
 
Vander
Senior Heliman
Location: St.Cloud,FL USA

Yes,Matt Botos invented the crack roll and he did it WITHOUT using JR8717 servos...that advertisement pisses me off every time I see it just for that reason

Vance
11-22-2007 02:26 PM
 
 
fiveoboy01
Veteran
Location: Waunakee, WI - USA

Agreed, crack maneuvers are possible with servos other than 8717s...
11-24-2007 10:27 PM
 
 
MX400 DUDE
Senior Heliman
Location: Oklahoma

A fast servo sure does help though.
11-29-2007 06:55 PM
 
 
Hoagie1
Veteran
Location: Redmond, WA

would it be cheaper...

to just do crack and fly? I just looked at my expendetures for this year on hobbies...
11-29-2007 07:13 PM
HOMEPAGE  
 
 
MX400 DUDE
Senior Heliman
Location: Oklahoma

Don't ever total up how much you have spent on RC! I've done it a couple times and almost quit both times
11-29-2007 07:30 PM
 
 
Olli-Pekka Mahrberg
Senior Heliman
Location: Finland, Joensuu

You can do crack manouvers with servos such as s9252 or s9451 if you are good at it. I think Alan's got s9451's on his Avant?


-op-
12-03-2007 03:01 PM
HOMEPAGE  
 
 
MX400 DUDE
Senior Heliman
Location: Oklahoma

I heard he was using 8717's that might be wrong. I know that you don't need a really quick servo but it does help I can do crack rolls with my 9252's but they aren't as fast as when I use a quicker servo.
12-03-2007 06:39 PM
 
 
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Aerobatic 3D Contest > What is a crack roll?
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