Does anyone know what 1/2a scale CL scale contests are planned in 2017 for 1/2a scale by the Cholla Choppers CL club in Tucson?

Fred

I got a question...do they allow the really small electric powered models to fly with the .049s?

Paul, I was just curious seeing that Brodak sells electric set ups for 1/2A sized planes. I thought that maybe they "might" be allowed.

I've got another question...when someone builds a 1/2A twin do both of the engines have to total under .061 OR are two .049 engines allowed? Thanks,PhillySkip

How about 5...

Thanks guys...that 5 engined bomber is sharp!

     Yes Ron, for 10 min I thought you were beating a dead horse BUT, 30 sec shy of a no fly you brought it al together and all those little half breads all sprang to life for a great flight. Eric

  leave it to the Race Guys , are u bringing it back this year

Bring it back??  I'd need to find two pitpersons that don't mind a 25% nitro shower......

ps: Will - Thanks for the kind words.

The actual 1/2A Scale Rule:

6.5.2. ½ A Scale.
The flight plan shall consist of three (3) required maneuvers and (1) over all judgment (realism in flight) listed in sequence. A maximum of ten (10) points is allocated to each of these four flight plan elements. Airborne laps have one point is awarded for each lap completed with all engine(s) running up to ten (10) laps. The four (4) taken together have a maximum award of forty (40) flight points. Five (5) bonus points are awarded for multi-engine models, provided the additional engine(s) run during the majority of the flight, but excluding landing. The maximum number of flight score points is forty-five (45). The maximum flight scoring of two flights is 90 points.
1. Takeoff. 2. Ten (10) Airborne Laps. 3. Landing. 4. Realism and Smoothness in Flight.

Pretty well spelled out...

That's the way I read it.

How about actually reading and understanding the rules:  "Five (5) bonus points are awarded for multi-engine models, provided the additional engine(s) run during the majority of the flight, but excluding landing." During the one and only flight at the 2014 NATS, one engine quit when a fuel line came off late in the flight.    All FIVE engines ran through the "majority" of the flight. 

Paul - I typed this real slow so you could understand it.

 

Does anyone know what 1/2a scale CL scale contests are planned in 2017 for 1/2a scale by the Cholla Choppers CL club in Tucson?

Fred

Fred's question was about the Tucson 1/2A scale contest.  This is really the 1/2A CL Multi-Engine Profile Scale contest that was originated by Mike Keville nearly 10 years ago.  The rules were originally for profile models but were modified several years ago to allow full scale fuselages.  Profile models are allowed and the rules are set up much like the AMA rules now for 1/2A scale such that profile models can compete with their full scale counterparts.  A good profile model can outscore a "not-so-good" full scale model.

The Tucson rules can be found on the Tucson Cholla Choppers website:

http://www.ccmaconline.org/2016%201cc%20meps%20rules.pdf

Score sheets used for these events are also on the Cholla Choppers website.

The rules require two engines.  One of the flight bonuses is to have three or more engines.  (No extra bonus is earned for more than three engines.)  The rules limit the displacement of each engine to no more than .061 cu in or 1cc.  From the above rules regarding the flight scoring for the engines:

"All engines must be running at release.

"A flight becomes official when the model takes off and completes the first lap with all engines running.

"One point will be scored for each airborne lap after the first lap with all engines running for a maximum of ten (10)
continuous laps including takeoff without touching the ground."

The Tucson rules provide for two classes:  Unlimited Class for throttled engines and Limited Class for engines with no throttles.  The contest also includes a 1/2A scale event for single engine models.

There have been several 3-engine models and several 4-engine models entered in these contests.

Because of the problems with the paved circles in Tucson for these 1/2A models, this contest has been held in Phoenix the past two years and will likely be in Phoenix or near Phoenix in 2017 (probably early October).

Models can be shipped to Arizona and proxy flown.  There are competent experienced fliers in the area to fly these things if the builder cannot attend the event.  In past years, there have been several proxy flown models the have won trophies.

Keith