Barum Mower Club Bible
Build rules, Safety rules, Racing Regulations and Technical Specifications.
Introduction
Within this publication, we aim to clearly set out the Rules, Regulations and Technical specifications for Barum Mower Club.
This will include the details on all aspects of a Mower built to race with the club, expected conduct whilst at a club meeting, and our regulations for racing.
Contents
Build Rules
Safety Rules
Drivers, teams and equipment
Racing regulations
Flag Rules
Scrutinising Checklist
Build Rules
General Regulations
All Mowers must have been used as a domestic lawn mower, and by a recognised manufacturer.
All cutting decks and blades must be removed.
All mowers must have its race number visible from 3 sides minimum.
Chassis and Bodywork
Wheelbase must not exceed 50” (1270mm) and overall width not to exceed 41” (1041mm) at the widest point.
A minimum of 75% of the original mower chassis must be maintained.
Strengthening is allowed but must be kept as discreet as possible.
Members must have adequate side and rear protection for drivers feet, ankles and back area.
The mower must have easy access to a towing point for recovery from the track.
Mowers must have mud flaps fitted no higher than 2’’(50mm) from the ground and mustn’t drag on the ground.
Handlebars are permitted but they must have grips or end bungs fitted to cover the handlebar tube ends.
An adequate bonnet retention system must be in place that will prevent the bonnet moving rearwards in the event of an impact.
There must be no sharp edges or spikes on the mower.
All levers must be ball ended.
Engine
Engine must not exceed 18 hp.
Engine must remain standard and unmodified.
Engine must be a design intended for a lawnmower spark plugs, exhaust and air filter may be changed.
Governor removal is permitted.
Exhaust must be fitted with silencing.
Exhausts must be pointing at least 45° towards the ground.
Exhausts must be covered with exhaust wrap where exposed.
Throttle must return to idle with a minimum of 2 return springs.
Fuel tank to be fastened securely and positioned out of any possible impact zone.
Brakes,Transmission and Tyres
Mowers must be fitted with a working and adequate breaking system.
All belts, pulleys, chains and moving parts must be guarded.
Axles may be replaced, but must be in the same general position as the original axle.
Mowers must have an operational clutch system.
Front tyres must be no larger than 15’’ in diameter.
Rare tyres must be no larger than 18’’ in diameter.
Mowers must§ 1 be fitted with turf tyres.
Aggressive tyre treads are not permitted, unless deemed a wet race by committee members.
Safety Rules
Some of these rules are repeated from earlier in the publication this is done deliberately for emphasis.
There must be no sharp edges or spikes on the mower.
Handlebars are permitted but they must have grips or end bungs fitted to cover the handlebar tube ends.
An adequate bonnet retention system must be in place that will prevent the bonnet moving rearwards in the event of an impact.
Mowers must have adequate side an rare protection for drivers feet, ankles and back area.
Mowers must have a kill switch tethered to the driver, with a maximum tether length of 20’’ (500mm).
There must also be a master kill switch fitted.
A minimum of 2 throttle return springs are required.
Lithium- polymer batteries are NOT permitted.
All belts, pulleys, chains and moving parts must be guarded.
Exhausts must be covered with exhaust wrap where exposed.
Mowers must be fit with a fuel tap, which is easily accessible.
Fuel tank to be fastened securely and positioned out of any possible impact zone.
Drivers, Teams and Equipment
Maximum of 5 members per team.
Minimum age is 16 years, with parents consent if under 18 years old(proof of age may be required).
All teams must supply their own fire extinguisher and keep it in the pit area.
Drivers must wear suitable full face helmet And securely fastened.
Drivers must wear suitable gloves whilst on track.
Drivers must use eye protection.
Footwear must be of sturdy construction, Ankle protection is a must.
Clothing must cover the full length of arms and legs.
Everyone in the pits must attend safety briefing before racing starts.
Every team must provide a Marshall for at least one race per day, if they cannot provide a Marshall they will need to sit out and Marshall one race.
Racing Rules
The track will remain closed until all marshal points are populated for the entire day's racing.
No mower may enter the track when it is closed.
All members must be scrutinised by an official scrutineer before each day / Or any time the official scrutineer requests it.
Scrutineers have the right at any time to revise their decision.
Scrutineers at any time can ask for proof of standard engine component.
Course cutting a missing cones will result in lap deductions deemed by lap counter.
Alcohol levels must be no higher than the legal limit to drive on public roads.
Refuelling must only take place in the pits with engines off and a fire extinguisher to hand.
All drivers must at all times obey the marshals instructions and flags.
All drivers must understand that the lap counters decision is final.
If you wish to test your mower between races, you must seek permission from a committee member and provide a Marshall on track.
Track Rules
Drivers entering the track should do so in a safe and courteous manner.
Drivers wishing to leave the track must indicate their intention by raising one hand fully in the air, especially when entering the pit lane.
Maximum speed in the pit lane is walking pace and you must keep to one side to allow other mowers to exit pit lane.
Mower racing is a non contact form of racing, eevery effort must be made to avoid contact.
Marshals can show you a Black Flag at their discretion.
Aggressive defending of a position will not be tolerated.
If you leave the track, you must rejoin safely, without causing obstruction.
If you are approaching a slower driver, it is your responsibility to pass safely, no driver is required to move out of your way.
If you're being caught by a quicker driver, stick to your racing line, the quicker driver must find a Safeway to pass you.
If you have a problem, you must return to the pits no repairs may be undertaken on the track.
Our Race Formats
Our primary race format is endurance from a standing start complete as many laps as you can before the chequered flag, the race time varies.
Relay race. In a team of two mowers, each mower completes 2 full laps, and on the third lap Pitts for the other mower to take over. This continues until the race time expires, if a mower does more than two full laps they will not be counted the winning team is the one which has completed the most laps.
Pit stop challenge. Each mower from a standing stop completes one lap, then pits and must change one wheel, rejoin the track and cross the finish line. The fastest time wins.
Flag Rules
Yellow flag. Drive with caution. No overtaking. You must raise a hand to acknowledge.
Red flag stop immediately. Turn off your engine.
Black Flag. Return to the pits and awaits instruction. You may have a safety or conduct issue.
Chequered flag. The race is now over. Return to the pits after a cool down lap.
Scrutinising checklist
1- Cutting blades removed
2- Within maximum dimensions (50’’ wheelbase, 41’’ width)
3- 75% of original chassis retained
4- Side and rear protection for feet and back
5- Towing points
6- Mud flaps fitted no more than 2’’ from the ground
7- Grips/ end bungs
8- Suitable bonnet retention system
9- No sharp edges or spikes
10- All levers ball ended
11- No illegal engine modifications
12- All exposed exhaust wrapped
13- Minimum of 2 throttle return springs
14- Safe fuel tank location and security
15- Engine kill switches, one attached to driver
16- Belts, pulley’s, chains fully guarded
17- Adequate breaking system
18- Fully functional clutch system
19- Legal tyres fitted
20- Minimum of 3 visible race numbers
21- Marshall provided for at least one race per day
