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TRacK-WIdTH - THEORY

EFFEcTS OF TRacK-WIdTH adJUSTMENT

TRacK WIdTH - MEaSURING

frOnT TrAck-WIDTH

WIDER

Decreases front grip.

Increases understeer.

Slower steering response.

Use to avoid traction rolling.

NARROWER

Increases front grip.

Decreases understeer.

Faster steering response.

reAr TrAck-WIDTH

WIDER

Increases rear grip at corner entry.

Increases high-speed on-throttle steering.

Use to avoid traction rolling.

NARROWER

Increases grip at corner exit.

Increases high-speed understeer.

Increases front grip in hairpin turns.

1.mm shim

(left & right sides)

NO shims used

FRONT TRACK WIDTH

18mm

REAR TRACK WIDTH

18mm

TRACK-WIDTH

Track-width is the distance between the outside edges of the wheels,

front or rear, and it affects the car’s handling and steering response.

It is important that front or rear track-width is adjusted symmetrically,

meaning that the left and right wheels must be the same distance

from the centerline of the chassis.

Making the track-width narrower can be compensated with adding

shims on the wheel axles to make the offset larger.

NOTE: CHANGING FRONT TRACK-WIDTH SETTING WILL ALSO AFFECT THE FRONT TOE AND CAMBER SETTING.

TRacK WIdTH - adJUSTING

Normally you cannot adjust the track-width of a car with C-hub suspension due to the design of the suspension system. However, the T suspension

system allows you to easily adjust the track width by adding/removing shims between the suspension holders and the bulkheads.

Make sure to use the same amount and thickness of shims on both left and right sides.

The amounts of shims used in the T suspension will determine the track-width settings.

Increase Track-width

(WIDER)

More/thicker shims

Decrease Track-width

(NARROWER)

Less/thinner shims

FRONT TRacK-WIdTH

REaR TRacK-WIdTH

Содержание T2

Страница 1: ...LUXURY TOURING CAR XRAY MODEL RACING CARS P O BOX 103 911 50 TREN N SLOVAKIA EUROPE PHONE 421 905 402724 support teamxray com www teamxray com 5 8 1 7 0 3 9 2 0 0 4 5 8 SET UP BOOK SET UP BOOK SET UP...

Страница 2: ...oe 18 Tweak 20 Roll Center 24 Chassis Flex Setting 28 Top Deck Flex Setting 29 Shocks 30 Dive Front 33 Squat Rear 34 Wheelbase 35 Anti Roll Bars 36 Front Rear Axles 37 Gearing 40 Gear Charts 41 Shock...

Страница 3: ...our set up changes and record which set ups work best at different racetracks under various conditions You can upload all your T2 set up settings to the XRAY s On line Virtual Set up Sheet Database at...

Страница 4: ...omponents of the Hudy All In One Set Up Solution as follows CAR SET UP COMPONENTS Shocks Anti Roll Bars Wheels Set Up Stands Droop Gauges Ride Height Gauge Toe Gauge Tweak Station Downstops detach det...

Страница 5: ...om the rear wheels to the front wheels Center of gravity is affected by the physical weight of the car and the placement of all components on the car If the car is not equally balanced front rear and...

Страница 6: ...on throttle understeer Better on smooth tracks Lower front downstop value Increases upward chassis travel on throttle Decreases high speed steering Decreases initial on throttle understeer Better on b...

Страница 7: ...of the support blocks or above the bottom of the chassis Negative numbers indicate the distance in mm BELOW the level of the support blocks or below the bottom of the chassis Downstops ADJUSTING Front...

Страница 8: ...ing foam tires Ride Height and Suspension Settings Suspension settings are unaffected by the wheels tires you put on the car only the ride height is affected When you use a set up system such as the H...

Страница 9: ...h FRONT springs EQUALLY Decrease Lower DECREASE preload on both FRONT springs EQUALLY Rear Ride Height Increase Raise INCREASE preload on both REAR springs EQUALLY Decrease Lower DECREASE preload on b...

Страница 10: ...s Both left and right wheels at the front or rear should be the same diameter Small ruler DROOP DROOP AND RIDE HEIGHT When you use rubber tires on your car you can set a particular downstop value to g...

Страница 11: ...st lift from the set up board 5 On the ruler note the distance to the chassis bottom The amount that the chassis rose before the wheels lifted is the droop value Repeat steps 3 5 for the other end of...

Страница 12: ...t is important that front or rear track width is adjusted symmetrically meaning that the left and right wheels must be the same distance from the centerline of the chassis Making the track width narro...

Страница 13: ...dge of the left set up stand hits the edge of the slot in the toe gauge Then slide the toe gauge to the left until it stops against the pin on the right front stand 8 Adjust the transmitter steering t...

Страница 14: ...ust rear camber so that the rear tires wear slightly conical to the inside The amount of front camber required to maintain the maximum contact patch also depends on the amount of caster Higher caster...

Страница 15: ...in The difference between those two camber angles represents the camber rise It can usually be adjusted by changing the upper link arm mount location on the shock tower Each graduated mark indicates a...

Страница 16: ...t of front static camber required to maintain maximum tire contact largely depends on the amount of caster used A higher caster angle more inclined requires less static camber while a lower caster ang...

Страница 17: ...of rolling through them If the car steers well off power but pushes on power then use more Ackermann effect and decrease your transmitter EPA dual rate If the car steers well on power and pushes off p...

Страница 18: ...oe gauge to the right until the pin on the top edge of the left set up stand hits the edge of the slot in the toe gauge Now read the toe value on the toe gauge The black line on the top edge of the st...

Страница 19: ...holders and the rear bulkheads Increase more rear toe in ADD shims thicker more between rearmost lower suspension holder and bulkheads on both sides equally Decrease less rear toe in REMOVE shims thin...

Страница 20: ...t have to be aligned The HUDY Professional Tweak Station level indicates the amount of tweak of the end of the car resting on the set up board not the end of the car on the tweak station For example b...

Страница 21: ...eaked Since the chassis is the central attachment point for all suspension components a twisted chassis will render all other suspension settings as unbalanced To check for a twisted chassis remove th...

Страница 22: ...pring preload on the REAR RIGHT shock INCREASE spring preload on the REAR LEFT shock Adjust both rear springs equally but in opposite amounts otherwise you will change the rear ride height Excess load...

Страница 23: ...i roll bar linkage Adjust both rear anti roll bar linkages equally but in opposite amounts Rear left wheel tweak reading Rear right wheel tweak reading Meaning Action No tweak at front of car None Exc...

Страница 24: ...own roll center Center of gravity CG is where all cornering force is directed RC and CG are ideally in the middle left right middle of the car RC is vertically below the CG in cars More chassis roll e...

Страница 25: ...and corner exit Better on tracks with quick direction changes chicanes Front roll center has most effect on on throttle steering during mid corner and corner exit Rear roll center affects on and off...

Страница 26: ...t suspension pin holders higher value Effect Suspension Arm Change the following Inner Pivot Outer Pivot Lowering rear roll center Rear upper camber link Raise and or move inward the inner pivot mount...

Страница 27: ...ssis rolls Changing the camber link angle affects grip throughout the entire corner while changing the length has more of an effect in the middle of the corners A Raise the roll center shorten or incr...

Страница 28: ...ex Technology MFT drivers can now not only change the amount of overall flex to the extreme but they are also able to fine tune the differing characteristics of both torsional twisting and lateral fro...

Страница 29: ...29 XRAY MULTI FLEX TECHNOLOGY 1 1 1 1 1 1 1 STIFF SETTING MEDIUM SETTING SOFT SETTING TOP DECK FLEX SETTING screw not used screw used screw not used screw used screw not used screw used...

Страница 30: ...A spring with a higher spring weight number such as a 30lb is considered harder since it will be more difficult to compress than a spring with a lower spring weight number such as a 20lb spring XRAY s...

Страница 31: ...reload 30 8380 ADDITIONAL XRAY ULTIMATE RACING SPRINGS 20 30 8384 XRAY SPRING SET D 1 5 15 LB BLUE GREEN 4 30 8385 XRAY SPRING SET D 1 6 20 LB LIGHT BLUE 4 30 8386 XRAY SPRING SET D 1 7 25 LB DARK BLU...

Страница 32: ...main idea behind them is that you can change the shock damping by altering the shock pistons without having to disassemble the shocks and changing pistons Adjusting the shock pistons may compress an...

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Страница 34: ...i i Vi i i i v i i i i V i i i ii V i i i i v i i i i L vi i i i i V i i V i i v V i i i L v i i i i i VVi i L v i i i i V ii i i i i V i i V i V i iV i i i v i V i i i i i i i i ivviV i i i i V i i i...

Страница 35: ...0MM 10 30 3123 ALU SHIM 3x6x2 0MM 10 WHEELBASE Effects of Wheelbase Adjustment Adjusting Wheelbase Wheelbase mm Use these shims mm Front of rear arm Behind rear arm 255 2 2 1 256 1 2 2 257 2 2 1 258...

Страница 36: ...role in the effectiveness of anti roll bars and a stiffer chassis makes the car more responsive to anti roll bar changes Stiffer Decreases chassis roll Decreases front grip increases rear grip Decrea...

Страница 37: ...table under braking but better turn in Car will understeer on power at corner exit A rear differential has the same construction as a front ball differential A rear differential is a very common choic...

Страница 38: ...position or caster FRONT SOLID ONE WAY AXLE When using an XRAY Multi Diff in one way mode outdrive shafts left and right are not connected to each other nor to front main axle This mode combines the c...

Страница 39: ...o set their radio to give less braking action use the throttle EPA setting this will prevent the rear tires from locking unexpectedly Track surface One Way Pulley Front One Way Axle Tight Loose Low tr...

Страница 40: ...eth on the pulleys and or gears The T2 has a DTR of 1 7 GEARING The primary drive ratio PDR is the ratio between the pinion and spur gear This number is commonly rounded up to the nearest thousandth a...

Страница 41: ...18 02 17 81 17 60 17 40 14 20 37 20 12 19 88 19 64 19 40 19 18 18 95 18 73 15 21 83 21 56 21 30 21 04 20 79 20 55 20 31 20 07 16 23 28 23 00 22 72 22 44 22 18 21 92 21 66 21 41 17 24 74 24 43 24 14 2...

Страница 42: ...hock body with the membrane sitting at an angle Gently use your finger to press the rest of the membrane down into the body until it is seated on the shock body s lip If using foam inserts place the i...

Страница 43: ...wo or more runs If you follow these steps and reach 3 0 camber on a set and one or both of them are still wearing the outside edge then you need to increase the amount of negative camber rise on the o...

Страница 44: ...LUXURY TOURING CAR XRAY MODEL RACING CARS P O BOX 103 911 50 TREN N SLOVAKIA EUROPE PHONE 421 905 402724 support teamxray com www teamxray com 5 8 1 7 0 3 9 2 0 0 4 5 8 SET UP BOOK SET UP BOOK SET UP...

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