RC DRIFT GYRO PLACEMENT MATTERS - FACTS REVEALED 

Bro you are so chill ... Also love that u noticed something u knew to be true and then jumped in the rabbit hole to find out why

Great video

I'm so glad you made this video! The way you broke it down is great! 💯

Looking forward to the differential video!

Great stuff!!!

great video man! keep it going.

Tested the topic in the past and I agree. rear mount requires less gain for the same feeling.

The presence of the gyros + accelerometers chip does NOT mean accelerometers are used! The manufacturer simply picked this chip because it is *makes more economical sense* - the chip that has both gyros and accelerometers are *mass produced* because they are more popular and common (e.g. mobile phone manufacturers need these and will buy them in large quantities) therefore such gyros+accelerometers are cheaper for drift gyro manufacturers to buy and manufacture drift gyros. The built-in accelerometers do not provide any inputs whatsoever to the yaw stabilization PID calculation; only the yaw gyroscope do. Even the pitch and roll gyroscopes on the same chip are not used. This is the same for heading hold gyros on collective pitch helicopters, and FPV racing drones. The accelerometers present on the chip do not serve any purposes, and do not contribute in any way towards stabilization.

Another fact is all gyros will drift, over time. (no a pun intended) It does not matter if MEMs (Micro-ElectroMechanical Systems) gyro, or a physical rotating gyro. An accelerometer is placed with the gyro to allow software to calibrate how much the gyro is drifting vs. if the vehicle would be turning. Applies regardless if the gyro is in a car, plane, or boat. From physics, any object will rotate around centre of mass. For example, an unbalanced wheel just means the axil is not placed at the centre of mass. Adding/removing weight aligns the centre of mass with the location of the axil. For accelerometers and rotational acceleration, it's important that they be placed near the centre of mass (not necessary the physical centre of a vehicle). This is because if the accelerometer is placed away from the centre of mass, then forward/rear, or side-to-side acceleration will be detected when rotation occurs. The further from the centre of mass, the greater the sideways acceleration detected by the accelerometer.

A gyro measures angular velocity, and an accelerometer measures linear acceleration, meaning if the accelerometer has any effect on the servo, you will see your wheels counter steer when you move your car sideways with no rotation. But it doesn't. Whatever the accelerometer is used for, if used at all, it is not used to send a signal to the servo. You can try this yourself. Move your car sideways with no rotation, no matter how quickly you do it, the servo doesn't respond. You can even turn your gyro 90° and drive in a straight line on a high grip surface to keep your car straight to see if the servo responds, it won't.

Excellent video and points. Totally agree. The gyros I have, for stability (SkyRC GC301 & Zenquark mini) don’t seem to have accelerometers. I wired them before mounting and shifted side to side (no action). Only angle change adjusted steering. And I actually want to do drifting but on normal tires and pavement, with severely OP 1/14 truck, so I might get one of these drifting specific ones. Thanks for the vid👏👏

Well done . Thank you

I couldn’t agree more with what you’ve said in this video.

Great content !!!!

This is so awesome info thanks

2:21 Im curious if theres a diffreence between how manufacturers make the gyro opperate as well as how sensitive the accelerometer is, It seem like the rear of the car would experience more acceleration as its the larger part of the circle and the front of the car would be a smaller circle leading to different levels of acceleration, The force stays static throught the circle i get that but dosnt the outside of the cirlce being larger cause it to accelerate faster to keep up with the inner circle? If thats the case could a less sensitive accelerometer be more useful closer to the rear of the vehicle and less at the front and vise versa for a more sensitive one? Would sensitivity not explain why some cheap drift gyros aren't as "functional" in the drift world and could it just be were positioning them to far forward that we assume their garbage 🤨🤔🧐

It does matter where you place it. The gyro has to go on the centre line of the chassis. Not to 1 side or the other. But on the centre line. Front to back makes a difference to the sensitivity of the gyro.

Thank you for posting this, just had someone in a group post the other video you was talking about and you just debunked it. Great timing lol but looking forward to the diff vid. I have only acouple runs on my new spur trans and diff and love to know how to tune it!

Very well spoken! I m glad i m not the one who dives deep into technical stuff! I telling for years that gyro placement from the rotation center matters big time. Keep these videos coming!

Can you do a video on rear toe including active toe. Specifically should we toe in on squat or out. If we do toe out on squat should it go positive or just to zero.

Hey, do you have any proof or even a lead that yokomo uses the accelerometer in their V4? MPU-6050 has a build-in processing unit so the gyro input can be modulated and send "directly" to the servo, while e.g. Sanwa uses gyro + external processing unit called STM32 to do the same (maybe the STM unlocks the possibility of using CODE 10, thats why they chose to use external unit). So what is your idea on how the "gyro" unit uses accelerometer?

6:21 oh I know bro! 😂😂😂

What gyro is in the Futaba GYD550?

Same shit thats in ps controllers yeah ?

Would you do me a favor and not post your titles in caps please? I have an eye injury and it's hard to read something when it's all in caps.