ADVANCED TUNING ADJUSTMEN

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ADVANCED TUNING ADJUSTMENTS38 • REVO 3.3This advanced tuning guide will take you one step further into thecutting edge technology that has been designed into Revo. Followthe instructions provided here to take advantage of Revo’s maximumperformance potential.SUSPENSION AND ALIGNMENT SETTINGSCaster AdjustmentThe caster angle of the frontsuspension may be used to adjustthe understeer (push)/oversteerhandling characteristics of themodel. Generally, increasing thecaster angle will move the trucktowards an oversteer condition(more traction on the front tires, lesson the rear tires). Decreasing thecaster angle will create a tendencytowards understeer (pushing in theturns). From the factory, the frontsuspension is set to a caster angle of10-degrees. The rear caster angle isnot adjustable. The caster angleof the front suspension can beadjusted from 5° to 15°. Adjust Casterthe caster by positioning thecaster adjustment shims on theupper control arms of the frontsuspension as shown in thetable to the right.Caster adjustment shims (2 front, 2 rear)Ground plane15.0° Four NoneCaster Angle, and Bump SteerBump steer is unwanted change in the steering angle of the front wheelsas the suspension travels up and down. It can result in unstable andunpredictable handling. Bump steer is affected by the position of theouter toe link end on the axle carrier. From the factory, the toe links arepositioned so that bump steer is virtually eliminated (about 3/100 ofa degree through the entire range of travel). When the caster angle ischanged, the outer toe link end should be repositioned on the axle carrierto maintain zero bump steer geometry. Adjustment is achieved using theshims and hollow balls provided with the vehicle. Refer to the Bump SteerElimination chart on page 39, and look up your caster angle setting tofind the correct position for the outer toe links. Positioning the toe-linkscorrectly will maintain the original factory geometry and eliminate theunwanted steering angle changes caused by bump steer.10°VerticalNumber & Position of Caster AdjustmentShims (Front Upper Control Arm)In Front ofHinge Pin BossBehind HingePin Boss5.0° None Four7.5° One Three10.0° Two Two12.5° Three OneRoll CenterThere are two holes on thebulkheads to mount each uppersuspension arm. The roll centerof the vehicle can be raised bymounting the upper control arm inthe lower of the two holes. This willeffectively increase the roll stiffnessof the vehicle (similar to installingswaybars). Adding roll resistance toone end of the vehicle will tend toUpper Control ArmUpper Mounting HolesUpper Control ArmLower Mounting Holesadd traction to the opposite end. For example, increasing roll resistance inthe rear by installing the upper arms in the lower holes will provide moretraction for the front wheels and potentially more steering. Installing theupper arms in the lower holes on the front and rear will increase overall rollresistance without changing the handling balance. The arms are installedin the upper position in the front and lower position in the rear from thefactory to make the truck easier and more forgiving to drive and less likelyto traction roll in turns. Changing the arm positions should be reservedfor track tuning. Note: When the upper suspension arms are moved toa different hole, the front outer toe link ends and rear toe control linksshould be repositioned to eliminate bump steer. Refer to the Bump SteerElimination chart on page 39, and look up your suspension combination(caster angle and roll center position) to find the correct position for thefront outer toe links and the rear toe control links. Adjustment is achievedusing the shims and hollow balls provided with the vehicle.Rockers (Progressive Rate/ Suspension Travel)One of the most exciting aspects of Revo’s suspension is the inboardshock (damper) arrangement that uses pivoting rockers to translatevertical wheel travel into linear shock motion. The rockers can be changedto increase or decrease the maximum wheel travel and also to change theprogressive rate of the suspension.The progressive rate determines how much the force at the wheelproduced by the springs being compressed (wheel force) will vary withsuspension travel (or vertical travel of the wheel). On a progressivesuspension arrangement, the wheel force will increase at a faster andfaster rate as the suspension is compressed. It feels as though the shockspring gets progressively stiffer the more you compress the suspension.On a linear suspension arrangement, the wheel force increases linearly asthe suspension is compressed. The spring does not feel any stiffer, evenwhen the suspension is fully compressed. This provides a very “plush”feeling suspension with seemingly bottomless suspension travel.
ADVANCED TUNING ADJUSTMENTSRocker Arm Total Travel Progressive RateProgressive 190mm(60mm up / 30mm down)LowProgressive 290mm(60mm up / 30mm down)MediumProgressive 390mm(60mm up / 30mm down)HighLong Travel120mm(80mm up / 40mm down)LowA total of four different rocker arm sets are available for Revo. All rockerarms except the Long Travel rocker arms will allow the wheel to travel atotal of 90mm in the vertical direction. From the ride height position, thewheel will be able to travel 60mm in the upward direction (bump), and30mm in the downward direction (droop). The Long Travel rocker armincreases total travel to 120mm. The progressive rate can be increased ordecreased by installing different rocker arm sets. The rockers are labeledProgressive 1 to Progressive 3. Progressive 1 rockers will provide a lowprogressive rate that maintains consistent damping force across throughthe whole range of suspension travel. These are best for extremely roughterrain that requires maximum suspension articulation. Progressive 3rockers use high progressive rate that will improve high-speed corneringon smooth surfaces by providing a firmer feel. Body roll, brake diveand rear squat will also be reduced. Always change all four rockers as acomplete set. Do not mix rates and travel.Using rockers with lower progressive rate may require the use of stiffersprings to maintain proper spring pre-load and ride height. The springpre-load adjuster on each shock is designed for minor adjustments. If theadjuster needs to be turned all the way down (compressing the spring) inorder to maintain proper ride height, then the next stiffer spring shouldbe used.The chart below demonstrate the effect of the various rocker arms onwheel force as the suspension is compressed. On the progressive rate,wheel force is light at first and increases as the suspension is compressed.Wheel Force2018161412108642010 20 30 40 50 60 70 80 90Wheel TravelProgressive Rate TravelConstant Rate TravelBump Steer Elimination ChartThe illustrations and the following table detail the position of the outertoe link end for various caster and roll center settings to eliminate bumpsteer. The shims and the hollow balls used to adjust bump steer areprovided with your vehicle.FRONTOuter Toe Link End SetupStandardHollow BallThin ShimThick ShimThin ShimStandardHollow BallThick ShimTall CenterHollow BallThick ShimStandardHollow BallThin ShimThick ShimThin ShimStandardHollow BallREARWhen the rear upper controlarms are mounted in thelower of its two mountingholes in the bulkhead (rollcenter), the tall center hollowball should be used as shown.Caster5° 7.5° 10° 12.5° 15°Outer Toe LinkEnd SetupTall LowerHollow Ball(stock)Tall CenterHollow BallControl ArmMounting Hole onFront BulkheadUpperLowerUpperLowerUpperLowerUpperLowerUpperControl ArmMounting Hole onRear BulkheadLowerUpperWhen using Long Travelrockers, a correspondinglythicker shock oil (or pistonswith smaller diameter bypassholes) should also be used toensure a proper relationshipbetween the spring anddamping forces.REVO 3.3 • 39
Page 1 and 2: owner ’ s manualMODEL 53097-3
Page 3 and 4: BEFORE YOU PROCEEDCarefully read an
Page 5 and 6: Made in ChinaSP 1361-R 0TOOLS, SUPP
Page 7 and 8: QUICK START: GETTING UP TO SPEEDThe
Page 9 and 10: TRAXXAS TQi RADIO SYSTEMYour Revo i
Page 11 and 12: BATTERY CARESome precautions should
Page 13 and 14: TRAXXAS TQi RADIO SYSTEM3. Walk awa
Page 15 and 16: THE TRX 3.3 RACING ENGINE INTRODUCT
Page 17 and 18: THE TRX 3.3 RACING ENGINETERMS TO K
Page 19 and 20: THE TRX 3.3 RACING ENGINETHE FUELUs
Page 21 and 22: THE TRX 3.3 RACING ENGINETHE CARBUR
Page 23 and 24: THE TRX 3.3 RACING ENGINEInstalling
Page 25 and 26: THE TRX 3.3 RACING ENGINETank 11. D
Page 27 and 28: THE TRX 3.3 RACING ENGINEBefore you
Page 29 and 30: DRIVING YOUR REVOINTRODUCTIONYour T
Page 31 and 32: BASIC TUNING ADJUSTMENTSpush rod co
Page 33 and 34: BASIC TUNING ADJUSTMENTSMaximum Ali
Page 35 and 36: BASIC TUNING ADJUSTMENTS2. Adjust b
Page 37: MAINTAINING AND STORING YOUR REVO3.
Page 41 and 42: ADVANCED TUNING ADJUSTMENTSThe foll
Page 43 and 44: TQi ADVANCED TUNING GUIDEAvailable
Page 45 and 46: TQi ADVANCED TUNING GUIDETRAXXAS LI
Page 47 and 48: Set Multi-Functionknob for STEERING

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