XRAY T3 Set-up Book - Petit RC

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CAMBER CAMBER - Theory - + camber Camber is the angle of a wheel to the surface on which the car is resting (with wheels and shock absorbers mounted). Zero degrees (0°) of camber means that the wheel is perpendicular to the reference surface. Negative camber means that the top of the wheel is leaning inwards towards the centerline of the car. Positive camber means that the top of the wheel is leaning outwards from the centerline of the car. Camber affects the car’s side traction. Camber affects the car’s traction. Generally more negative (inward) camber means increased grip since the side-traction of the wheel increases. Adjust front camber so that the front tires wear flat. Adjust 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 angles (more inclined) require less negative camber, while lower caster angles (more upright) require more negative camber. CAMBER - MEASURING Initial steps Prepare the car as follows: · Shocks: Attach the front and rear shocks. · Anti-roll bars: Detach front and rear anti-roll bars. · Wheels: Remove the wheels. Set-up components: Use the following set-up components: · assembled set-up stands 1. Assemble the set-up stands. 2. Mount the set-up stands on the axles. 3. Place the car on the set-up board. 4. Push down and release the front and rear of the car so that the suspension settles. 5. Read the camber setting from the camber gauge of each of the four set-up stands. 14
CAMBER Each graduated mark indicates a 1° camber value. You should be able to set camber with a resolution of 0.5° CAMBER - ADJUSTING Front CAMBER Increase (more –ve) SHORTEN the front upper camber link. Decrease (less –ve) LENGTHEN the front upper camber link. Rear Camber Increase (more –ve) SHORTEN the rear upper camber link. Decrease (less –ve) LENGTHEN the rear upper camber link. STOP! After you set the camber, recheck the ride height settings. Camber and ride height settings affect each other, so be sure to check each one when you adjust the other. CAMBER RISE Also referred to as “camber intake,” this measurement quantifies how much the camber changes on the car when the suspension is compressed. Usually, a shorter upper link will result in a large camber rise, while equal length upper and lower links (or suspension arms) help keep the camber rise minimal. To measure camber rise, set the car at normal ride height and then measure the camber on the camber gauges. Next, push on the suspension, and measure the camber again. 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. 15
Page 2 and 3: CONTENTS Setting up the XRAY T3 3 D
Page 4 and 5: SETTING UP THE XRAY T3 107715 Ride
Page 6 and 7: Downstops Downstops - THEORY front
Page 8 and 9: RIDE HEIGHT RIDE HEIGHT - Theory ri
Page 10 and 11: DROOP DROOP - Theory Droop refers t
Page 12 and 13: TRACK-WIDTH TRACK-WIDTH - Theory Tr
Page 16 and 17: CASTER CASTER - Theory caster Caste
Page 18 and 19: TOE TOE - Theory toe in 0 toe out 0
Page 20 and 21: TWEAK TWEAK - Theory A “tweaked
Page 22 and 23: TWEAK Adjusting Tweak Using Spring
Page 24 and 25: oll center ROLL CENTER A “roll ce
Page 26 and 27: oll center adjusting front roll cen
Page 28 and 29: XRAY MULTI-FLEX TECHNOLOGY XRAY MUL
Page 30 and 31: SHOCKS Shock Absorbers Shock absorb
Page 32 and 33: SHOCKS Shock Damping Shock damping
Page 34 and 35: 34
Page 36 and 37: ANTI-ROLL BARS Anti-roll bars are u
Page 38 and 39: FRONT & REAR AXLES Solid Axles A so
Page 40 and 41: GEARING GEARING Proper gearing is o
Page 42 and 43: SHOCK BUILDING TIPS Building shocks
Page 44: The T3 Set-up Book may show previou

XRAY T3 Set-up Book - Petit RC

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