BRCA Large scale off-road section rules 2012
The following are the aims and rules of the British Radio Car Association large scale off-road section.
Aims
To provide as uniform as possible, a format for large scale off road RC cars, to be able to compete with one another on an open National basis. The intention is to encompass all commercially available large scale cars, yet still encourage invention and innovation by allowing “one off” home constructed cars and modification of kit products.
Racing Classes
For 2012 there will be three race classes, buggy, short course trucks (SC) and open class (formally outlaw). The buggy class has two national championships, 2 wheel drive & 4 wheel drive for vehicles which conform to their respective technical specifications and have separate heats and finals. A junior championship will be run for those under 16 in both championships.
The short course truck class will also have national and junior championships If there are less than 6 short course truck class vehicles to run their own heats and finals they will be combined with the 4 wheel drive buggies with separate championship points scored.
The open class welcomes any vehicle which does not conform to the buggy or short course (SC) technical specifications but complies with the BRCA model vehicle scope of not exceeding 1 meter in length, 20kg in weight or a maximum of 30cc engine capacity in its own championship. If there are less than 8 open class vehicles to run their own heats and finals they will be combined with the 4 wheel drive buggies with separate championship points scored. There is no national or junior championship within the open class.
All race classes shall be respectful of the generic BRCA LSOR construction rules and in particular the 2 and 4 wheel drive buggy class technical specifications for the buggy class, and the short course truck technical specification.
Driver Classification
There will be 2 classifications for drivers in 2012 either a National driver or a Junior (those under 16 at the start of the race season) with both competing for the national championships in 2, and 4 wheel drive buggies and short course.
Championships
Within the 2 wheel drive championship there will be an additional regional championship. The 8 round 2 wheel drive championship will contain 4 rounds designated as Northern meetings and 4 that are categorised as Southern meetings. The national champion titles will be awarded based upon 5 point scoring rounds from the 8 round national series and the regional titles will be awarded based upon 3 points scoring rounds from the drivers nominated regional series. Drivers are permitted to enter one regional series only. Count back rules (Non scoring rounds) apply for tied positions.
Construction
Bumpers with a min of 100mm max 220mm will be mandatory at the front and optional at the rear. The manufacturers Kill Switch must be made easy to both access and operate, access provided if necessary, by cutting a hole in the bodywork. A Standard Cut-out switch marker
(available from the scrutineer if needed) to be affixed to the body shell within 1 inch of the location of the switch. All cars will be tested to see if their kill switch works on the start line & if not the car will not be allowed to run in that heat or final. The Exhaust system to be mounted such that the Manifold does not protrude further forward than the front window post and the system must run as close to the body as possible. Stingers must not be mounted transversely (across) the underside of the rear wing. Forward routed exhaust systems must not protrude from any forward facing part of the body shell. Cars with uncovered exhausts must have shields in place covering the exposed hot areas. Un-silenced or “open” exhausts will not be allowed regardless of location.
The following specific rules apply for section use:
Engine rules
The engine must be air cooled single cylinder 2 or 4 stroke piston engine. Only petrol that is available from any UK petrol station may be used, no Avgas or specialist racing fuels allowed. The only additive allowed is 2 stroke oil. The following are not allowed: performance enhancing gases such as Nitrous Oxide, Fuel Injection, Boost bottles, Turbo or Super Chargers, Electronic Ignition systems which run off separate battery packs. Engines may be modified internally. Heat sink heads may be used together with long reach plugs. Alternative ignition systems may be used providing they are not battery fed. All engines must be fitted with either a suppresser type plug or suppressed plug cap.
Exhaust Systems
Any exhaust fitted shall comply with noise guidelines laid down by the host club or BRCA\MSA guidelines which ever is the lower. In practical terms no driver will be allowed to run with a car making enough noise so as to cause problems for the club on whose circuit the event is being run. Kit Standard exhausts are usually sufficient. Open exhausts or pipes are not allowed. The scrutineer will check for excessive noise.