1) All standard kit parts must be used and the boat constructed as per the instructions provided.
2) The motor, rudder, shaft, propeller and coupling supplied with the kit must be used. It is not
permitted to use ‘hot’ motors, or to modify the motor provided in any way, or use different
propellers. Only the following modifications are allowed :-
a) Cells may be placed on the hull floor in any configuration in order to improve centre of gravity.
b) Transom and hull sides may be sharpened by adding filler and sanding down to aid stability.
c) Sanding down the bottom of the hull to ensure it is straight may be done and filler used if necessary to even out bumps.
3) Either a micro-
4) Any Nickel Metal Hydride 6 cell pack (7.2 volts) may be used. Any type of battery connector may
be used. 2 cell Li-
5) Buoyancy aids such as foam my be used inside the boat and/r cabin roof. This is advised.
6) Modifications can be made to the existing motor mount if an improved motor fixing method is
7) No additional modifications may be mad below the water line.
8) Race number board should be attached to the flat section of the cabin side for racing.
9) A self-
10) A safety loop (to interrupt the positive power supply) may be fixed to the hull at the stern and
is in fact recommended for safety and ease of use.
11) Boats may be scrutinised at any time by the Race Controller to ensure adherence to the above
Amended 16th February 2017
CLUB 500 Changes for 2017
At this year’s AGM the use of Lipo batteries in Club 500 was voted in. If competitors want to carry on using Nimh batteries then this is OK.
There are however several advantages with Lipo batteries. The reduced weight allows the boat to run a little faster but the main advantage is that the control and handling is much more predictable. Also Lipo’s hold their charge so will be no need to top up the cells just before the next race.
There are a few things to take into account. Only 2 cell Lipos will be permitted which is equivalent to 7.4 volts. For safety reasons charging must be done using a Lipo balancing charger with balancing lead. The cells packs have a C rating which determines the current limit for charging and discharging. For example a pack with a C rating of 25 and capacity of 3000 m/amps can deliver 25 x 3 = 75 amps. If the limit is exceeded then the pack will warm up and can expand which damages the pack. The power drain in a Club 500 is fairly modest so a pack with a rating of 20/25 or above should be fine. The other consideration is the back dimensions and the capacity in m/amps. A typical Club 500 in one five-
The standard motor will remain the same, with no changes and also you should be able to continue using the same speed controller, so only batteries and chargers change if you want to go down the Lipo route.
Thanks to Martin Cusick for this information
Another good shop for batteries etc is Component Shop (www.component-
Amended 10th February 2016