Manual - Great Hobbies

asic TUNING ADJUSTMENTSUpper Shock Mounting PositionsThe upper shock mounting positions willhave suspension effects opposite from thelower shock mounting positions. Springrate (at the wheel) increases as the uppershock mounting position is moved fromposition (A) to position (C). Ride heightis not affected by changes in the uppershock mounting position. Use the chartbelow to see the effect of the various shockmounting positions. The horizontal lengthCBA1 2 3of the lines indicates the amount of suspension travel. The angle orslope of the lines indicates the spring rate (at the wheel).Shock OilThe 4 oil-filled composite shocks (dampers) effectively control thesuspension movement by preventing the wheels and tires fromcontinuing to “bounce” after rebounding from a bump. Changing theoil in the shocks can vary the suspension damping effect. Changing theoil to a higher viscosity oil will increase damping. Lowering the viscosityof the oil will cause the suspension damping to be reduced. Dampingshould be increased (with higher viscosity oil) if the model is bottomingeasily over jumps. Damping should be decreased (with thinner viscosityoil) if the model is hopping over small bumps and feels unstable. Theviscosity of shock oil is affected by extremes in operating temperature;an oil of certain viscosity will become less viscous at higher temperaturesand more viscous at lower temperatures. Operating in regions with coldtemperatures may require lower viscosity oil. From the factory, the shocksare filled with SAE-30W silicone oil. Only use 100% silicone oil in the shock.4Replacing Shock OilFor easier service, the shocks should be removedfrom the vehicle and disassembled to change the oil.1. Remove the lower spring retainer and shock spring.2. Remove the upper shock cap using the shockwrench and suspension multi tool.3. Empty the used shock oil from the shock body.4. Fill the shock with new silicone shock oil up to the top of the shock body.5. Slowly move the piston up and down (always keeping it submergedin oil) to release the air bubbles. Let the shock sit for a few minutes toallow any remaining air bubbles to surface.6. Slowly thread the upper cap with the installed shock bladder onto theshock body with the suspension multi tool. The excess oil will bleedout of the small hole in the shock cap.7. Tighten the shock cap until snug. Use the included steel shock wrenchto hold onto shock body while tightening.ALIGNMENT SETTINGSThe alignment settings are critical for optimizing the performance of Jato.Adjust your alignment as carefully and precisely as you possibly can.Toe AdjustmentThe wheels can be adjusted to point straightahead or have a toe-in or toe-out setting. Tohelp you remember, look down at your feet. Fortoe-in, your feet point towards each other. Fortoe-out, your feet point away from each other.The toe angle of the front wheels can beadjusted by varying the length of the toe linksthat connect the steering linkage to the frontsteering blocks. The front toe links are equippedwith turnbuckles. The lengths of the toe linkscan be adjusted by turning them with theincluded turnbuckle wrench. The toe angle ofthe rear can be adjusted by changing the rearaluminum tie bar. The factory tie bar provides4-degrees of toe in for each rear wheel.Toe can be changed to 3 or 5-degrees byinstalling optional tie bars (sold separately).Toe: Base Factory SettingsFront: 0-degreesRear: 4-degree toe-in each sideRight Hand(Normal) ThreadsLeft HandThreadsDecreaseLengthIncreaseLengthImportant: The shocks areassembled at the factorywith a center-to-centerdistance (between therod end balls) of 87mm.Any time the shocks areremoved and disassembled,this distance should bechecked to ensureproper operation ofthe suspension.Jato Shock Piston Sizes1.4 1.31.4mm Front1.3mm RearJATO 3.3 • 31