Offshore boats for a start, because they are generally all the larger Gas powered, craft, no one is racing Nitro in offshore anymore(we didn't make that a rule, the nitro boats just disappeared). The risk of an out of control Gas powered boat is exacerbated by the consequences of it hitting something or someone in more open waters. There have been far too many instances of out of control boats this year for this issue to continued to be ignored.
Gas powered oval boats will be next, but generally run in more protected waters. The Masterton Club have imposed this rule for ALL boats running on their lake, given that the public are walking around the waters edge.
The throttle spring was considered an option when used in conjunction with a coreless servo, that has low enough mechanical resistance, for the spring to do it's job. We found that not all coreless servos had low enough mechanical Resistance to allow the spring to return the throttle to zero. It's also not effective when the butterfly falls off or the carb jams.
All clubs now have identified options for Ignition kill systems. Pete your one of your own club members has an option for sale and was being used by himself and Bruce at yesterday's Rotorua offshore. The committee is not going to enter into prescribing what to use, given that everybody will have their own preference from the options available. These things have been mandatory for sometime in the RC car racing scene, there's no shortage of information and opinions on this subject.
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