RC Drift Car: MST MS-01D RTR converted to RWD with maximum steering angle of 74°, upper weighted and weight balance of 58% toward rear.
Body: Mitsubishi Evo X with wide wing
Setup
RWD
Front camber -12° toe-out 10° @ neutral position, measure by improvised protector.
Rear camber 0°° (to allow flat part of tire to fully contact the ground for maximum grip) with toe-in of 0-1° visual estimate only
Front Caster 10° laid back With front lower swing arm at the further backward position.
Rear Caster 10° With rear lower swing arm at the further front position.
Maximum steering angles:
Leading wheel 74°, trailing wheel 50° (low grip due to weight shift up) which is achievable with higher negative camber at neutral position.
Steering knuckles
Use the inner holes for both top and bottom side to connect the upper and lower swing arm. This together with the higher caster angle will give more steering angle for leading wheel. But note that too much caster leaning will cause the leading wheel to get stuck at full lock. Tighten the toe adjustment bar till it holds the wheel steady at full lock. This is why I ended up with 9° toe out and Caster 10° for the front. But that ok for drifting.
Battery mount position
Moved higher and all the way back (see video on mounting). This will allow weight to shift to the opposite side of the turn which towards to counter-steered wheel during a drift. The height of the battery tray stands about 42mm above the chassis plate and change orientation to be parallel to chassis length.
Gyro
HPI Dbox set to 80%
Surface
Uneven ceramic tiles
Tires
Front and rear
Topline PP tires
Upgrades
Aluminium steering arm
Aluminium front hubs
Aluminium ball joints
Aluminium and steel turn-buckles
For RWD
- removed Front CVD, front-one-way and drive cups.
PowerHD 1206TG fast / coreless servo w. 0.06s/60°speed and 7kg torque.
Change to servo saver horn #210256
Modification from RTR stock setup:
Remove R-part #210016 and adjust servo to maximum steering angle.
Lengthen Front wishbone shaft (lower swing arm) by turning it anti-clockwise to . This effective increase negative camber too. The internal double sided bolt need to be longer type to extend to this length.
Replace body shell button magnets with Eagle stealth magnet for stronger body to chassis bond.
Shocks :
Rear soft spring.
Ring adjust to High collar to make it really soft.
Front med springs.
Ring adjust to Mid collar to increase hardness
Wheels : 5mm offset front and rear
Weight :
Because tires grip better when pressed down, I learnt that the overall weight of the car plays an important part. Not only the weight balance between front and rear is crucial. After moving battery mount to upper rear and removing the FRONT-ONE-WAY, drive cup and drive belt, the Front : Rear weight distribution is now more rear bias :-
of 41% : 59% with total weight of 1.60kg
Location
Woodlands
Video captures by Action Cam
31 июл 2024
