Three Chassis with Different Transmitters and Electronics
Posted: Fri 6. Jul 2018 03:56
Below is a pic of 3 chassis. The chassis on the left is one of the original chassis with a proprietary transmitter and electronics offered by Wes. The 2 white chassis were made using a kit that I designed and call CK8. The one in the middle is a newer version of CK8 but not the newest. I haven’t built a chassis yet with the newest version, which has been printed and is now waiting on my desk.
The chassis in the middle uses a receiver and ESC combo board. It is available from Magnetic Racing Ltd. That board apparently does not need an external antenna.
https://www.ebay.co.uk/itm/Magnetic-Rac ... SwFUxa6gNj
The Flysky FS-GT2B transmitter is compatible with the receiver & ESC combo board. That transmitter uses the AFHDS protocol to communicate with the receiver. The receiver is compatible with the servo which uses the PWM protocol to communicate with the HK-5320 servo.
The chassis on the right uses a separate receiver and ESC. I bought mine at Banggood.
https://www.banggood.com/Flysky-FS2A-4C ... rehouse=CN
https://www.banggood.com/DasMikro-1S-Bi ... rehouse=CN
The HobbyKing HK-GT2E transmitter is compatible with the separate receiver noted above. That transmitter uses the AFHDS 2A protocol to communicate with the receiver. The receiver is compatible with the servo which uses the PWM protocol to communicate with the HK-5320 servo.
As you can see from the photo, the receiver/ESC combo board sold by Magnetic Racing is much easier to wire up. That is a very big advantage in my opinion. The footprint is small enough for a small 1/32 scale chassis. But it also is thicker and is more likely to interfere with the cockpit, even when recessed into the floor pan of the frame. As far as I can tell the combo board has dynamic braking automatically engaged when the trigger is moved to the neutral position. This slows down the car very quickly. Personally I’d prefer a little less braking force. Of course by moving the trigger beyond the neutral position, you can cause the car to go in reverse.
The DasMikro bidirectional ESC also has dynamic braking. But it is not automatically engaged when the trigger is moved to the neutral position. If the car is going forward, and the trigger is allowed to return to its neutral position, the car will coast. To engage the brakes you must deliberately move the tigger beyond the neutral position. To go in reverse, you must first allow the trigger to return to the neutral position and then move the trigger in the opposite direction that is used to go forward. In this way, braking is optional. I believe both transmitters are made by Flysky but they use different protocols so they are not interchangeable. The HK-GT2E is less expensive. It handles 2 channels whereas the FS-GT2B has 3 channels. It also has a lightweight rechargeable battery pack in the bottom which can be connected to your computer via the included USB cable to recharge it. The lightweight battery pack makes the entire unit top heavy, so it’s best to lay it down on its side. As far as I can tell, the less expensive HK-GT2E is not compatible with the receiver/ESC combo board. The FS-GT2B is not compatible with the separate FS2A receiver and DasMikro ESC.
I still have more testing of the lane changing capabilities of a chassis with the servo mounted between the front wheels. As of now, I’m of the opinion that the lane change plates need to be longer than those required for the original magracing chassis. That chassis with a coil, creates a greater steering angle when the coil is energised compared to when the servo between the front wheels is actuated. Thus it turns quicker in a shorter distance to take an alternative guide wire. A servo mounted in the midsection of the chassis, like those created by Wes lately, apparently work fine with the original short lane change plates. That’s not too surprising since the mid mounted servo acts directly on the tie rod. More on this later perhaps.
All of the chassis use the same motor and the same 10440 3.7v li-ion rechargeable battery. In all cases the battery is loaded from the bottom. To save room, my chassis do not use magnets to make contact with the terminals of the battery. The chassis in the middle does have a small magnet above the (+) end of the battery to help hold the battery in place. Both of my chassis use inexpensive 2.4ghz RC transmitters and electronics. Both also use an HK-5320 servo from HobbyKing. The WB of all of my chassis kits are adjustable. The WB of the one on the right is shorter because the motor is glued to the back of the battery box as well as to the motor pod. The frontend of both of my chassis have some positive toe (toe in) and negative camber. The kit uses wheels and tires commonly used on 1/32 scale slot cars.The chassis in the middle uses a receiver and ESC combo board. It is available from Magnetic Racing Ltd. That board apparently does not need an external antenna.
https://www.ebay.co.uk/itm/Magnetic-Rac ... SwFUxa6gNj
The Flysky FS-GT2B transmitter is compatible with the receiver & ESC combo board. That transmitter uses the AFHDS protocol to communicate with the receiver. The receiver is compatible with the servo which uses the PWM protocol to communicate with the HK-5320 servo.
The chassis on the right uses a separate receiver and ESC. I bought mine at Banggood.
https://www.banggood.com/Flysky-FS2A-4C ... rehouse=CN
https://www.banggood.com/DasMikro-1S-Bi ... rehouse=CN
The HobbyKing HK-GT2E transmitter is compatible with the separate receiver noted above. That transmitter uses the AFHDS 2A protocol to communicate with the receiver. The receiver is compatible with the servo which uses the PWM protocol to communicate with the HK-5320 servo.
As you can see from the photo, the receiver/ESC combo board sold by Magnetic Racing is much easier to wire up. That is a very big advantage in my opinion. The footprint is small enough for a small 1/32 scale chassis. But it also is thicker and is more likely to interfere with the cockpit, even when recessed into the floor pan of the frame. As far as I can tell the combo board has dynamic braking automatically engaged when the trigger is moved to the neutral position. This slows down the car very quickly. Personally I’d prefer a little less braking force. Of course by moving the trigger beyond the neutral position, you can cause the car to go in reverse.
The DasMikro bidirectional ESC also has dynamic braking. But it is not automatically engaged when the trigger is moved to the neutral position. If the car is going forward, and the trigger is allowed to return to its neutral position, the car will coast. To engage the brakes you must deliberately move the tigger beyond the neutral position. To go in reverse, you must first allow the trigger to return to the neutral position and then move the trigger in the opposite direction that is used to go forward. In this way, braking is optional. I believe both transmitters are made by Flysky but they use different protocols so they are not interchangeable. The HK-GT2E is less expensive. It handles 2 channels whereas the FS-GT2B has 3 channels. It also has a lightweight rechargeable battery pack in the bottom which can be connected to your computer via the included USB cable to recharge it. The lightweight battery pack makes the entire unit top heavy, so it’s best to lay it down on its side. As far as I can tell, the less expensive HK-GT2E is not compatible with the receiver/ESC combo board. The FS-GT2B is not compatible with the separate FS2A receiver and DasMikro ESC.
I still have more testing of the lane changing capabilities of a chassis with the servo mounted between the front wheels. As of now, I’m of the opinion that the lane change plates need to be longer than those required for the original magracing chassis. That chassis with a coil, creates a greater steering angle when the coil is energised compared to when the servo between the front wheels is actuated. Thus it turns quicker in a shorter distance to take an alternative guide wire. A servo mounted in the midsection of the chassis, like those created by Wes lately, apparently work fine with the original short lane change plates. That’s not too surprising since the mid mounted servo acts directly on the tie rod. More on this later perhaps.