400 & Open Class Electric Gliding Rules - 2005/6 Season

The Electric competition is held at Leigh Park Farm on Sunday mornings on dates to be scheduled starting at 10am. These will appear under ‘Calendar’ on this website and also in the TRF Newsletter. It is planned to have 6 rounds in the competition with the final result being taken from the best 4 rounds by each competitor.

There are 2 classes each of 3 flights per round.

The Classes are:

  1. A 400 class limited to conventional (ferrite) brushed motors not exceeding ‘400’ size. 
    There is no limit on wingspan or weight of the model BUT battery energy capacity would be limited to 10.25 Watt Hours.

  2. An ‘Unlimited’ class where there is no battery capacity limitation but models must comply with BARCS Standard Model Characteristics for Open Class.

The Rules:


Pilot
 Any TRF member with a qualifying model.
Battery
 Battery to be pre-charged. No re-charging between flights
Flights
 3 rounds of 10 minutes each slot (inclusive of motor run).
 Pilots will launch at 3 minute intervals in order to avoid concurrent landings in the same target area.
Motor Run
 Max of 60 seconds each slot. No motor activity after 1st minute of flight
Scoring
 1 point per second of flight (including motor run)
Bonus Score
 Max of 50 points landing bonus.
Penalties
 1 point per second deducted for exceeding slot time. No score for out of field landing.
Safety
 Normal club rules will apply in addition to BARCS safety rules for competition

Battery Rules for 400 class

These are based on the BARCS rules in force in November 2004.
Basically, any NICAD/NIMH/LIPO or LION battery may be used provided it is within the 10.25 Watt Hour capacity limit. 
For the purpose of calculating battery capacity the following assumptions have been made (by BARCS):
  • NICAD & NIMH batteries are assumed to be 1.0 volts per cell
  • LIPO & LION cells are assumed to be 3.2volts per cell
The calculation in simplest form is Ampere hours multiplied by number of cells in pack multiplied by the voltage per cell. 
Thus, a 1000mahr, 7 cell NICAD pack will calculate as – 1 Amp hour x 7 x 1 volt = 7 Watt hours

Examples of qualifying batteries are:

6 cell NICAD/NIMH 1700 mahr = 10.2  Watt Hours
7 cell NICAD/NIMH
1450 mahr =  10.15 Watt Hours
8 cell NICAD/NIMH
1250 mahr = 10.0 Watt Hours
2 cell LION/LIPO
1600 mahr = 10.24 Watt hours
3 cell LION/LIPO 1050 mahr = 10.08 Watt Hours

The Competition Dates are shown in the 'Calendar' Section.

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