[NSRCA-discussion] Avalanche - Positive or Negative Snap?

[Ron Van Putte]

On Jun 9, 2006, at 1:43 PM, Michael Laggis wrote:

> I am wondering if the pilot has the choice on the type of snap in an
> avalanche?  In Advanced maneuver 14 is an Avalanche.  The AMA rule  
> book
> states as follows.
>
> "Model pulls or pushes up into a loop, at the top it executes a  
> complete
> snap roll, positive or negative, recovers to complete the loop and  
> finishes
> in level upright or inverted flight."
>
> I was told by someone at the field that if you pull into a loop it  
> has to be
> a positive snap and if you push into the loop it is a negative snap.
>
> My preference is pull into the loop then do a negative snap.  Just  
> looking
> for some clarity.

As more than I will point out, the Advanced maneuver schedule  
requires you to pull into the loop.  Once you are in that loop, you  
may perform a positive or negative snap roll at the top.  Most  
perform a negative snap roll, because the model usually ends up  
pointed too far down after a positive snap.

The maneuver description in the rule book was written that way an  
attempt to cover many different possible combinations of loops and  
snap rolls.  In this case, it produced confusion.

Ron Van Putte