13LikesCustom built motolyzer
01-16-2019 | 09:20 PM
#31
MaxRain makes a good point. If you only want your analyzer to verify you accurate your sensors are you could tap between the ESC and motor. But if you want something more like the skyrc analyzer you will need to make use of the PWMs (Pulse Width Modulator) to control the three motor phases and give the motor RPM by pulsing the voltages to the motor at the correct times.
As far as using tasks instead of interrupts - don't do it. I wouldn't even use an operating system for this type of application.
As far as using tasks instead of interrupts - don't do it. I wouldn't even use an operating system for this type of application.
01-27-2019 | 11:38 AM
#32
And if your driving is that noisy, a slightly faster motor will not mean anything more than your car is going a tiny bit faster when you crash on of the 10-15 times per race. Time and money is better spent on practice than a new motor.
If you can drive to 95% consistency, and your fastest lap is .1-.2 off the lap record then you can use lap times to see if something is genuinely better.
Motor analyzers are just a froofroo accessory most people have no business buying or using. Congratulations on wasting money on something that will not impact your lap times.
It really isn't that difficult. Any motor worth running will be set very close to the perfect timing out of the box. Gear it where the manufacturer specifies, and just go drive. A motor analyzer won't let you pick a magic timing that you somehow couldn't have picked otherwise. It really is not that difficult.
If you can drive to 95% consistency, and your fastest lap is .1-.2 off the lap record then you can use lap times to see if something is genuinely better.
Motor analyzers are just a froofroo accessory most people have no business buying or using. Congratulations on wasting money on something that will not impact your lap times.
It really isn't that difficult. Any motor worth running will be set very close to the perfect timing out of the box. Gear it where the manufacturer specifies, and just go drive. A motor analyzer won't let you pick a magic timing that you somehow couldn't have picked otherwise. It really is not that difficult.
However, having done quite a bit of testing with an eagle BL dyno in conjunction with RC Crew Chief software, there is a little bit to be learned. Most motors like a small window of timing for best performance, and it can be on an individual motor basis, not just "a brand X hotshot 17.5 should be timed at 46*". Sometimes you can have a motor that will run a lot better with some careful adjustment. Gear is close to the same type of small window, and it's not always what you think it "should" be, especially considering issues like heat induced performance fade.
100% necessary for success? No. But if you have this 95% consistency or better, it would pay dividends.
01-27-2019 | 08:23 PM
#33
Tech Master
Joined: Jul 2018
Posts: 1,011
From: Florida
To some extent you are right. Quite a few people go overboard especially considering the sensors on a motor are probably less than the best available.
However, having done quite a bit of testing with an eagle BL dyno in conjunction with RC Crew Chief software, there is a little bit to be learned. Most motors like a small window of timing for best performance, and it can be on an individual motor basis, not just "a brand X hotshot 17.5 should be timed at 46*". Sometimes you can have a motor that will run a lot better with some careful adjustment. Gear is close to the same type of small window, and it's not always what you think it "should" be, especially considering issues like heat induced performance fade.
100% necessary for success? No. But if you have this 95% consistency or better, it would pay dividends.
However, having done quite a bit of testing with an eagle BL dyno in conjunction with RC Crew Chief software, there is a little bit to be learned. Most motors like a small window of timing for best performance, and it can be on an individual motor basis, not just "a brand X hotshot 17.5 should be timed at 46*". Sometimes you can have a motor that will run a lot better with some careful adjustment. Gear is close to the same type of small window, and it's not always what you think it "should" be, especially considering issues like heat induced performance fade.
100% necessary for success? No. But if you have this 95% consistency or better, it would pay dividends.
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