Post by drtrcr22 on Nov 22, 2009 0:43:50 GMT -6
ACKERMAN - dynamics of the steering assembly where one wheel arcs at a faster rate than the other when turned from side to side.
APEX - the centerline of corner arc.
ALKY - Methyl alcohol, or Methanol, used in high compression engines.
BALLAST - the adding of heavy lead weight blocks to the frame chassis to increase percentages of side to side or front to back weight ratios in fine tuning suspension dynamics.
BIRDCAGE - a rear axle suspension bracket that rides on the outside of a rear axle housing to attach swing arms or trailing arm rods, shock and floating brakes to the chassis framework.
BOX & CHIP - An ignition control device such as MSD controls multiple ignition firing sequence, with a changeable engine rev limiter module that decreases the chance of over revving an engine.
BUMP STEER - the fluctuation of steering toe in or toe out as the front suspension travels in up or down motion.
CAR LOOSE COMING OUT - the loss of rear tire traction when exiting turn 2 or 4.
CAR LOOSE GOING IN - the loss of rear tire traction entering turn 1 or 3.
CAR TIGHT COMING OUT - The loss of front tire traction when exiting corner 2 or 4.
CAR TIGHT GOING IT - The loss of front tire traction and steering when entering corner 1 or 3.
CHECKED UP - when a driver lifts off the throttle pedal for some reason and losses momentum, often causing a chain reaction from other driver's pace and often causing crashes.
COILOVER - a suspension assembly where the coil spring is mounted over and around the shock as one unit.
COILOVER ELIMINATOR - a sliding rod device that contains the coil spring only without the shock, so the shock can mount in a separate location.
FORWARD BITE - the amount of rear tire traction available to cause the car forward motion.
FLOATER - a rear axle assembly (usually 9" ford style) that has live "floating" axles inside a housing with independent drive plate bearing hubs. Most current Floaters also have floating "Birdcages" on the outside of the housing tubes to attach 4 bar rods and coil-over shock suspension assemblies.
FUEL - Racing Gasoline specifically designed for extreme racing engine conditions, by a specialty fuel company such as V-P Racing Fuels.
GRINDING - The use of a very course grinder disc to cut the glaze off a "seasoned" tire and rough up the surface to promote traction.
GROOVING - the use of a u-shaped hot knife to cut new grooves into the tread surface of a tire to promote increased traction.
JACKS - threaded bolt and plate assemblies in the chassis to adjust the ride height of each corner of the car in fine tuning wheel load proportions.
J-BAR - a Panhard bar that attaches from the chassis to the rear axle housing to keep it centered in the frame.
OFFSET - the amount of rear spacing centerline a wheel has, to fine tune the handling dynamics of tire load, sidebite, and suspension adjustments.
PACKING, OR ROLLING - vehicles driving slowly on the freshly prepped clay dirt racing surface to pack down and condition the surface for racing conditions, and to decrease the chance of race car tires cutting or grooving the track surface full of ruts at the beginning of the race event.
Quick Steer - a steering shaft attachment that increases the side to side lock steering ratio usually at 1.5 to 1, or 2 to 1 ratio. The device can also be turned around to slow the steering ratio down on long wide corner super speedways (NASCAR).
REAR STEER - the dynamic rear axle movement when the chassis is "up on the bars" causing the left wheel to be pulled forward and down, and right wheel to be pushed upward and back, turning the axle to the right and steering the back end of the car around in a wider arc. This is similarly noticed on a Monster Truck which uses mechanical rear steer to get around a tight corner in an enclosed arena.
SCRATCH - when a driver is forced to start at the back of the pack for whatever rules violation may have been imposed.
SIDE BITE - The amount of contact patch sideways traction the rear tires have into the track surface.
SIPING - the use of a multi blade knife to score or cut slices into the tread surface of a tire to promote traction and help cool the heat out of the rubber.
SPUD DRIVE - a direct drive coupler flange bolted to the rear of an engine crankshaft linked to a transmission to eliminate a clutch or torque converter connection. A highly modified or aftermarket transmission must be used as the driveline will be locked solid after forward movement of the car into final solid drive.
SQUARE - the alignment of centerlines between front and rear wheelbases to have optimal suspension and chassis alignment.
STAGGER - the difference in height and diameter runout of tires from the right side of the car to the left side. A taller right rear tire with more runout is sought in most cases because a right rear wheel has to travel further around left hand turns. It also helps prevent broken axles on locked or welded axle assemblies.
STROKER - an internal rotating engine assembly combination altered to be shorter or longer in bore and stroke length than what OEM (Original Engine Manufacturers) had intended for their production engine design. Current combinations of Stroker design for race engines are almost endless.
TRACK BERM OR TRACK TOP - the uppermost cushion at the top edge of a banked dirt circle track.
TRACK BOTTOM - the inside edge of the track surface closest to the infield.
TRACK DRY SLICK - a very hard, compacted dry slick clay surface highly resembling an asphalt track with black ice conditions. This track condition is extremely difficult to race on with very limited tire traction, and usually a "one-lane" track making it near impossible to pass other traffic.
TRACK HEAVY - a wet, very tacky clay track surface promoting a lot of tire traction.
UP ON THE BARS - When engine torque is applied to the driveline causing the forces to lift the left rear of the chassis up through the four bar suspension and apply downforce to the left rear wheel for added traction.
UP ON THE WHEEL - extremely attentive driving as hard as capable under given conditions, often referred to as "On The Edge".
Jim - IMCA Dirt Modified #22 Southeast New Mexico
APEX - the centerline of corner arc.
ALKY - Methyl alcohol, or Methanol, used in high compression engines.
BALLAST - the adding of heavy lead weight blocks to the frame chassis to increase percentages of side to side or front to back weight ratios in fine tuning suspension dynamics.
BIRDCAGE - a rear axle suspension bracket that rides on the outside of a rear axle housing to attach swing arms or trailing arm rods, shock and floating brakes to the chassis framework.
BOX & CHIP - An ignition control device such as MSD controls multiple ignition firing sequence, with a changeable engine rev limiter module that decreases the chance of over revving an engine.
BUMP STEER - the fluctuation of steering toe in or toe out as the front suspension travels in up or down motion.
CAR LOOSE COMING OUT - the loss of rear tire traction when exiting turn 2 or 4.
CAR LOOSE GOING IN - the loss of rear tire traction entering turn 1 or 3.
CAR TIGHT COMING OUT - The loss of front tire traction when exiting corner 2 or 4.
CAR TIGHT GOING IT - The loss of front tire traction and steering when entering corner 1 or 3.
CHECKED UP - when a driver lifts off the throttle pedal for some reason and losses momentum, often causing a chain reaction from other driver's pace and often causing crashes.
COILOVER - a suspension assembly where the coil spring is mounted over and around the shock as one unit.
COILOVER ELIMINATOR - a sliding rod device that contains the coil spring only without the shock, so the shock can mount in a separate location.
FORWARD BITE - the amount of rear tire traction available to cause the car forward motion.
FLOATER - a rear axle assembly (usually 9" ford style) that has live "floating" axles inside a housing with independent drive plate bearing hubs. Most current Floaters also have floating "Birdcages" on the outside of the housing tubes to attach 4 bar rods and coil-over shock suspension assemblies.
FUEL - Racing Gasoline specifically designed for extreme racing engine conditions, by a specialty fuel company such as V-P Racing Fuels.
GRINDING - The use of a very course grinder disc to cut the glaze off a "seasoned" tire and rough up the surface to promote traction.
GROOVING - the use of a u-shaped hot knife to cut new grooves into the tread surface of a tire to promote increased traction.
JACKS - threaded bolt and plate assemblies in the chassis to adjust the ride height of each corner of the car in fine tuning wheel load proportions.
J-BAR - a Panhard bar that attaches from the chassis to the rear axle housing to keep it centered in the frame.
OFFSET - the amount of rear spacing centerline a wheel has, to fine tune the handling dynamics of tire load, sidebite, and suspension adjustments.
PACKING, OR ROLLING - vehicles driving slowly on the freshly prepped clay dirt racing surface to pack down and condition the surface for racing conditions, and to decrease the chance of race car tires cutting or grooving the track surface full of ruts at the beginning of the race event.
Quick Steer - a steering shaft attachment that increases the side to side lock steering ratio usually at 1.5 to 1, or 2 to 1 ratio. The device can also be turned around to slow the steering ratio down on long wide corner super speedways (NASCAR).
REAR STEER - the dynamic rear axle movement when the chassis is "up on the bars" causing the left wheel to be pulled forward and down, and right wheel to be pushed upward and back, turning the axle to the right and steering the back end of the car around in a wider arc. This is similarly noticed on a Monster Truck which uses mechanical rear steer to get around a tight corner in an enclosed arena.
SCRATCH - when a driver is forced to start at the back of the pack for whatever rules violation may have been imposed.
SIDE BITE - The amount of contact patch sideways traction the rear tires have into the track surface.
SIPING - the use of a multi blade knife to score or cut slices into the tread surface of a tire to promote traction and help cool the heat out of the rubber.
SPUD DRIVE - a direct drive coupler flange bolted to the rear of an engine crankshaft linked to a transmission to eliminate a clutch or torque converter connection. A highly modified or aftermarket transmission must be used as the driveline will be locked solid after forward movement of the car into final solid drive.
SQUARE - the alignment of centerlines between front and rear wheelbases to have optimal suspension and chassis alignment.
STAGGER - the difference in height and diameter runout of tires from the right side of the car to the left side. A taller right rear tire with more runout is sought in most cases because a right rear wheel has to travel further around left hand turns. It also helps prevent broken axles on locked or welded axle assemblies.
STROKER - an internal rotating engine assembly combination altered to be shorter or longer in bore and stroke length than what OEM (Original Engine Manufacturers) had intended for their production engine design. Current combinations of Stroker design for race engines are almost endless.
TRACK BERM OR TRACK TOP - the uppermost cushion at the top edge of a banked dirt circle track.
TRACK BOTTOM - the inside edge of the track surface closest to the infield.
TRACK DRY SLICK - a very hard, compacted dry slick clay surface highly resembling an asphalt track with black ice conditions. This track condition is extremely difficult to race on with very limited tire traction, and usually a "one-lane" track making it near impossible to pass other traffic.
TRACK HEAVY - a wet, very tacky clay track surface promoting a lot of tire traction.
UP ON THE BARS - When engine torque is applied to the driveline causing the forces to lift the left rear of the chassis up through the four bar suspension and apply downforce to the left rear wheel for added traction.
UP ON THE WHEEL - extremely attentive driving as hard as capable under given conditions, often referred to as "On The Edge".
Jim - IMCA Dirt Modified #22 Southeast New Mexico
