(03-17-2017, 10:59 AM)madeinjapandad Wrote: Theoretically speaking ,
How would any of these two ( http://www.hpiracing.com/en/kit/112862 / Sprint 2 Flux BMW M3 GTS ) - ( http://www.hpiracing.com/en/kit/106168 Sprint 2 Flux BMW M3 GT2 ) HPI cars compare on an indoor track to the RWD Sakura or YOKOMO RWD class if the HPI cars ( STOCK ) , were converted to RWD with no other major modifications with an exception to drift tires ?
Alternatively , how would the HPI cars handle with only a drift tire conversion and with NO RWD conversion against the Sakura or Kokomo on a track ?
This question is a theoretical one , i am new to the world of RC drifting and my knowledge on RC drifting cars , while expanding greatly daily , is still weak . Forgive me if my question seems stupid .
Is it simply because of the RWD factor ?
Why couldn't i simply slap on some drift tires and convert the mentioned cars to RWD and outshine the other rides ?
Thank You .
The HPI is basic a car for touring/street driving. It is most compared to a Tamiya TT-01 but it doesn't get much better because they are not build for drift, that said, any car can drift with drift tyres - But it's the way they drift that differs from other manufacturers. The HPI cars can handle 50/50 (All drive drift) since they don't have much lock on their front wheels and to try and converting them to a rwd is just money and time down the drain.
A HPI with drift tyres and 50/50 style would be the same as a Sakura or Yokomo on the track, but it get's more complicated, but first, let's talk about the 3 styles there is in motorsport and drift:
1. 50/50 Drift or also known as Rally drift - It's basic all wheel drive and powersliding, you know Ken Block still does it, since he has done it since he started Rallying.
2. Counter steering drift - Underdrive in the front, making the rear spin more and automaticly creates oversteer and to control it = Countersteer, hence the name CS Style)
3. Rear wheel drive - The car is pure focused to mimic RWD, by that exeption that it is helped on by a gyro since in real life you have senses of moving, sliding and feeling. In R/C you only got your eyes and no feedback from the controller so the car does something, you see it, you process it, you send it to your fingers and the radio transmitt it to the car in about 0.50 second and that's too slow. So a gyro helps with the initial steering, the reaction and then you focus more on the throttle because that's the next most important thing in RWD drifting.
When R/C cars are driving, the motor placement is important, to explain i'll use a scale from 0-100/0-100 for weight and handle performance:
A HPI Sprint 2 is rear biased, 35/65 since the motor is back it will rotate the rear first, high grip.
A Yokomo DP is center biased, 50/50 since the motor is center it creates neutral balance and equal grip.
A Yokomo DIB is front biased, 60/40 sice the motor is front it will rotate the front first, less grip.
A MST XXX-D is similar to a Yokomo DP.
A Sakura D4 is similar to the Sprint 2, MST RMX-D S/Pro
A Sakura D3 is front biased, 80/20 since the motor is in front of the axle it will rotate the front very fast, less grip.
To fully understand the pattern, the position of the motor plays a big part in drifting and styles - myself is loving my MST XXX-D, but i previously have owned a Tamiya TT-01D (50/50), MST XXX-D Pro (50/50), Yokomo DP/DIP (50/50-60/40), MST RMX-D VIP (35/65) and now finally my XXX-D VIP (50/50).
The biggest thing you should know it that R/C cars that is not developed like a drift car won't drift RWD properly unless you invest a lot of money into custom parts. A MST, Yokomo, Sakura that is built for drifting RWD would be better because they are designed for it, and out of the box are capable of drifting good, though the Sakura doesn't offer much since it's more budget than quality i would recommend a Yokomo YD-2 or a MST RMX-S (soon to arrive) or a FMX.
I hope this help you into the big drift R/C community world :)