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2015 IGNITE K3 SET-UP 

BASELINE SET-UP INFORMATION FOR THE IGNITE K3

 

 

Page 8 of 29 

   

TIRE PRESSURES 

Tire pressure starting points (set before going on track): 

 

Bridgestone YLB: 10 – 12 PSI 

 

Bridgestone YLC: 12 – 14 PSI 

 

Bridgestone YDS: 25 – 30 PSI 

 
Setting tire pressures for a cold tires is done so the tire can reach maximum 
temperature near the last 25% of the race.  It is important that you set tire pressures 
cold with values that discourage them from becoming too hot during the session.  
Using air, each tire should not rise more than 4 PSI during a normal session.  We 
recommend you check your tires after each session to ensure that they are not 
overheating. 
 

PROBLEM: The kart gets better as the race goes on, but by then it’s too late. 

 
SOLUTION: Increase the tire pressures by 1 PSI per session.  This will help get the tires 
to temperature faster. 
 

PROBLEM: The kart is really good in the first 3 laps, but gets slower from there. 

 
SOLUTION: Decrease the starting tire pressures by 1 PSI per session.  Your tires are 
getting to temperature too quickly and are likely overheating from there.  Decreasing 
the starting pressures will allow them to heat slightly slower, making the kart become 
progressively better instead of progressively worse. 
 

Cold tire pressures can vary based on ambient temperature.  On a cold day, increase 

starting tire pressures.  On a hot day, decrease starting tire pressures. 

 

Summary of Contents for MARGAY racing K3

Page 1: ...I G NI T EK 3S E T U PG U I D EB OOK ma r g a y r a c i n g ma r g a y r a c i n g v i s i t u s o n l i n ea t ma r g a y c o m ma r g a y r a c i n g...

Page 2: ...8 Tire Pressures 9 Wheels and Tires 8 Front Track Width 11 Front Torsion Bar 12 Front Ride Height 13 Caster Camber Toe 16 Rear Track Width 17 Rear Wheel Hubs 18 Rear Axle 19 Rear Ride Height 20 Suppl...

Page 3: ...ring Wheel Standard Ignite flat top King 330mm flat top Steering Hub Flat Angled Torsion Bar None Tube Adjustable Steering Bushing Standard plastic Billet toe lock fairing mount Seat Struts Standard B...

Page 4: ...t position soft position Front Ride Height neutral neutral Caster neutral neutral Camber 2mm side 2mm side Toe 1mm side 1mm side Rear Width 52 outside outside 52 5 outside outside Rear Hubs 40mm x 65m...

Page 5: ...steering components should be properly fastened and safety clipped steering shaft tie rods spindles and kingpins All braking components should be properly fastened and safety clipped master cylinder...

Page 6: ...synthetic engine oil any brand Ensure front and rear sprockets are aligned for a smooth chain Lube chain before every run with chain lube or a 90w gear oil Tension should be loose enough to show 2 3 t...

Page 7: ...he future Remove the float bowl on the carburetor and break clean the brass jets that are screwed into the housing This will help ensure your engine is running at the optimum level Check and tighten t...

Page 8: ...K3 Page 7 of 29 DRIVING LINE AND TERMS Oversteer is when the rear of the kart slides more than the front causing the driver to counter steer to avoid spinning Understeer is when the front slides more...

Page 9: ...es after each session to ensure that they are not overheating PROBLEM The kart gets better as the race goes on but by then it s too late SOLUTION Increase the tire pressures by 1 PSI per session This...

Page 10: ...are more porous they are softer and provide less overall grip Balancing tires each time they are mounted on the rim is important to ensure that all rotational mass is properly balanced PROBLEM The fro...

Page 11: ...idgestone YLC 25mm inside the wheel Bridgestone YDS 30mm inside the wheel PROBLEM The front end understeers on corner entry SOLUTION Widen the front track width by 5mm per side per session This will i...

Page 12: ...azier NOTE A softer front end will also help create a more stable straight line braking feel but at the expense of front end grip PROBLEM The inside rear lifts too much causing understeering in the fr...

Page 13: ...TION Dropping the spindle down 1 shim will help move the center of gravity C O G to the rear of the kart reducing the front end responsiveness and increasing rear end grip levels PROBLEM I can t get t...

Page 14: ...d handling characteristic Standard settings are Caster Neutral 15 degrees Camber 2mm per side Toe 1mm toe out per side POSITIVE CASTER NEGATIVE CASTER PROBLEM The kart sits flat and slides The inside...

Page 15: ...aster will always help the kart turn better but at the expense of corner exit speed Increasing the vertical weight transfer puts a larger burden on the engine An ideal caster setting would be as littl...

Page 16: ...rage the inside rear tire to lift Steering Ackerman can be adjusted to better suit a drivers required steering input levels There are two adjustment holes on each spindle and a center adjustment on th...

Page 17: ...ur desired width Recommended starting positions are Bridgestone YLB 53 outside to outside Bridgestone YLC 52 5 outside to outside Bridgestone YDS 52 outside to outside PROBLEM The rear end of the kart...

Page 18: ...track width because part of the hub can extrude beyond the end of the axle PROBLEM The rear end of the kart keeps sliding around forcing oversteer SOLUTION Add a longer hub while maintaining the same...

Page 19: ...ear axle This will direct more weight transfer to the rear end of the kart and provide more rear end grip PROBLEM The kart lays flat though the corner with little to no inside rear lift SOLUTION Chang...

Page 20: ...PROBLEM The kart hops through the middle of the corner SOLUTION Drop the rear axle down to the lower ride height holes This will move the C O G towards the front of the kart giving the front end more...

Page 21: ...de of the kart This will stiffen up the rear end and provide the kart with a more stable feel through the center of the corner PROBLEM The kart hops through the middle of the corner SOLUTION Add an ad...

Page 22: ...average raise the seat in 0 25 increments accordingly SEAT STIFFNESS The rigidity of a seat can play a big part in the overall handling of the kart A general rule of thumb is stiffer kart and stiffer...

Page 23: ...Moving the seat forward or tilting the seat up in 0 25 increments will help provide the front end with more weight percentage thus helping balance front end grip This change will also encourage increa...

Page 24: ...weight NOTE Before adjusting to make sure your scale numbers are accurate make sure that the seat is mounted correctly in the kart square level etc PROBLEM My front weight percentage is too low SOLUTI...

Page 25: ...g a front hub and hub mount wheels A safety tip wire tie the spindle castle nut instead of using the standard issue voltz clip when running a wide front track REAR WIDTH The idea in wet conditions is...

Page 26: ...the tires to temperature sooner For long races start with lower pressures to keep the kart from tightening up as the laps increase CASTER Caster is another conditional tuning option that depends on th...

Page 27: ...end understeers pushes on corner entry A list of possible fixes in order of severity include Widen the front track width Increase front tire air pressures Insert the front torsion bar Increase the amo...

Page 28: ...PROBLEM The kart oversteers on corner entry A list of possible fixes in order of severity include Narrow the rear track Narrow the front track Increase rear tire air pressures Remove the torsion bar...

Page 29: ...making any changes to correct a hop ensure that the driver is not trying to use both pedals at the same time or trail braking through the corner and is not trying to slide the kart through the corner...

Page 30: ...flat tight through the corner A list of possible fixes in order of severity include Widen the front track width Widen the rear track width Increase the caster angle Change to a softer rear axle Raise...

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