Sunday, April 6, 2014

Hitting the "real" world with the sakura.

Finally, the car is set to chase down some CS/4wd drifters on local parking lots, and show them what is real rc drifting! :P
The goal is to keep the setup between carpet/slippery surface/ asphalt as similar as possible, because i run all "terrains" almost one after another.
The current setup is all about the tires and rear spring stiffness.
Front are ansmann touge tires, which are super hard, alowing the fron end to slide also, preventing the twichiness that rwd cars experience when there is no gyro.
Rear are Hpi t-drift radials, which are not good drift tyres at all since they are grippy, and not very predictable. But with the backpack(battery behind the back axle) they work good, providing the much needed grip.
Front shocks are still vertical, with hard springs(equivalent to 3racing orange), rideheight is not limited or set, droop is as much as the shock allows=geat response from fron wheels even on uneven surfaces.
Rear shocks are tilted abit, the same as they are for some months now. Springs are 3racing orange, and the amount of preload on the rear springs is responsible for all the cars handling. No droop at the rear, rideheight is 8mm.
Asphalt is considered as the primary surface, because asphalt is everywhere and all drift meets/competitions here are on asphalt.
The focus is speed and agressive transitions(besides fun offcourse). I will have to work on tandem skills when i find someone who drifts near me.

Below are some clips of dialing in rear preload on some ruff ground.

Some MST tires are on the way, maybe those tires can make the car more balanced in terms of compound(front/rear)

So far so good, i am happy with the setup, feels good and is fun tho it is sort of intense to drive.

To sum up, i only have to change three things when going from surface to surface.

1.Tires:
-carpet=hard allround(sakura stock/ansmann touge)
-slippery surface=t drift radials allround
-asphalt=touge front, t drift rear
2.Ackermann
-at full lock i like some ackermann on all surfaces, more on asphalt and carpet to make the hard tires grip.
-less on slippery surface, because t drifts are to grippy anyway.
-the number is between 2-8deg, and is set by eye(but was also measured, once on every surface)
3.Rear preload
-very little on carpet, about 3mm
-more on slippery s. 5-10mm
-maxed out or some mm less than maxed out on asphalt


Additional mods to the car are:
-Lowered final drive ratio(using front axle pulley on the rear), better throttle response and less strain on the torqueless motor
-cooling fan to keep the brushed motor cool(can't wait to see the, so they tell me, outdated silver-can kick some brushless ass)


Preparations for F5g sailing seasons are ongoing, more on that soon.
That's it.



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