Coota Class Nostalgia
- Last Updated: 11 June 2013
- Published: 29 March 2013
Why ‘Coota’ class? Because ideas for the class were sorted out and tested at a couple of AEFA events held at Cootamundra.
Concepts for the class come from a couple of existing competitions. At Old Timer meetings a regular feature is the Gordon Burford Event. Its a limited engine run event where models must be powered with a diesel engine manufactured by Gordon Burford. Popular models come from the Nostalgia era, ie aircraft which were designed, kitted or published on or after
That idea also applies in the Electric Formula One (EF1) format. It’s a pylon racing event for electric powered models where all power system components (motor,
So the Coota class builds on the concept of a standard power system with a some freedom to select the airframe. Because
Because the class is still evolving its premature to construct detailed regulations but the following areas take ideas from Burford and EF-1 to form the framework for the provisional rules:
- A Nostaglia period model
- A target flight time of 7 minutes, based on a single continuous motor run, to a height of about 200m (~600 ‘)
- A reasonably priced outrunner motor, with adequate power to reach the target ceiling using a common propeller
- Power components to weight no more than 170g
- Adequate battery capacity to allow two back to back heats without battery change
Based on these ideas the following can be considered as provisional rules.
NOSTALGIA Coota Class
DESCRIPTION: This is a limited motor run event for nostalgia period model aircraft.
This event is open to all nostalgia aircraft as described in MAAA and AEFA Old Timer rules. Models are not to be scaled. Maximum wing span is 57”. Pylon and propeller face locations are to be in accordance with the published plans.
Motor system eligibility
Any outrunner motor with
(Note: Turnigy Park 480 1320kv is suitable)
(Note: Any 3S LiPo under 1050mAh is allowed)
Electronic Speed Control
ESCs are unrestricted and can include
(Note: Current rating should be between 20 to 30 amps)
The propeller is to be a commercially available 8” x 4” electric.
Motor run times
Motor Run is a single continuous run not exceeding 25 seconds.
The maximum flight time is seven minutes
Hand launching of Nostalgia models is permitted.
Two back-to-back heats may be required by the Contest Director
Coota Class Candidates
The following are examples of models that meet the provisional rules with links to one source of plans.
If you want to experiment, look at the following setup. It has been tried on a Zoot Suit nostalgia model weighing 20 oz AUW.
The model climbed to just over 200m in 20 sec.
Prop: 8” x 4”
Motor mount + 4mm Prop driver, wt=12g,
Total power system weight=202g (7.1 Oz, ~35% of model mass)
Expect around 20A current draw at full throttle