Hello, I see this video is a year old so I'm not sure if there will be a reply. I am a long time on and off rc racer. When I raced, I only had the benefit of using track testing. I look forward to getting back into racing, when I go back to racing I would like to get a motor/chassis Dyno and will probably also Download RC Crew Chief. My question is, with using RC Crew Chief, in correlation with your dyno's, were you able to see an improvement in your lap times? And especially with the use of the chassis setup tools within RC Crew Chief, did you make chassis adjustments you wouldn't have made without the program, and the benefits there. These kinds of tools would be very useful, and would allow one to very finely tune a vehicle for conditions, but alot can be done without them. How much did you improve? C main to B, B to A, or bottom of the A to top three finishes? Maybe some on track footage would be cool, but the differences is runs after changes would be difficult to notice without lap times.
Hi Robert, I prefer to use the motor dyno over the chassis dyno as I can create a sim model of the motor and use that to look at motor heating, gearing .. and dial it in before ever hitting the track. Since I have been using RC Crew Chief my setup knowledge has increased dramatically. I thought I knew a lot before but I was just a hack. Now I am no longer afraid to make what most would consider drastic changes as I know what to expect. I would suggest you just install the program and take it for a test drive. There is a 30 day free trial period.
gosh I hate to be that guy. I dont point this out to take anything away from your work. I have allot of respect for it. You take the general methods rc people use to tune their motor and put science behind it. its very ahead of its time. if most guys took it half as far as you it would be amazing. But here is the rub. permanent magnet motors are not used in applications that are horsepower driven applications. Yet all our motors are. for HP application you want max torque at average rpm not 1 rpm. applying a PMDC motor can be done by using HP and its usually a 3rd or 4th priority when maximizing it in an application. sizing for HP is something that is done primarily when running at a constant rpm or acceleration and deceleration are not important. PMDC motors are sized for an application by the discrete accel/decel rates of each segment of the motion profile.
Edited:: after watching battery video I think I need a better battery.... :) Hello, your video was very very informative and this is the first one I've watched but I will definitely be subscribing and watching others. I see that there is no different between the 120amp and 200amp esc comparison. I'm curious on your opinion for using an 80amp esc over a 120amp esc for blinky mode? Do you think there would be a huge difference in motor performance with those amperage esc? I'm just getting into this and I'm currently using the budget turnigy trackstar combo 17.5 and seem to lack power when going for longer jumps. Turnigy trackstar 17.5 combo 80amp esc, 4600mah 100c battery, 72spur/30pinion. In order for me to make the biggest jump for indoor carpet track I have the bell timing turned to the max degree. Motor comes off the track at 140-150 degrees
You may get better results turning down the timing as high timing settings are good for maxing out top speed on long straights. What you sacrifice to achieve that is bottom end torque which translates to less acceleration. Also there is no substitute for good batteries. The ESC comparison is for full throttle operation. At part throttle results would likely be different.
Appreciate this advice I will definitely be turning down the end bell timing and getting better batteries!! I will test this out next time at the track. Thanks
Hello, I see this video is a year old so I'm not sure if there will be a reply.
I am a long time on and off rc racer. When I raced, I only had the benefit of using track testing.
I look forward to getting back into racing, when I go back to racing I would like to get a motor/chassis Dyno and will probably also Download RC Crew Chief.
My question is, with using RC Crew Chief, in correlation with your dyno's, were you able to see an improvement in your lap times?
And especially with the use of the chassis setup tools within RC Crew Chief, did you make chassis adjustments you wouldn't have made without the program, and the benefits there.
These kinds of tools would be very useful, and would allow one to very finely tune a vehicle for conditions, but alot can be done without them.
How much did you improve? C main to B, B to A, or bottom of the A to top three finishes? Maybe some on track footage would be cool, but the differences is runs after changes would be difficult to notice without lap times.
Hi Robert,
I prefer to use the motor dyno over the chassis dyno as I can create a sim model of the motor and use that to look at motor heating, gearing .. and dial it in before ever hitting the track.
Since I have been using RC Crew Chief my setup knowledge has increased dramatically. I thought I knew a lot before but I was just a hack. Now I am no longer afraid to make what most would consider drastic changes as I know what to expect.
I would suggest you just install the program and take it for a test drive. There is a 30 day free trial period.
Thanks
gosh I hate to be that guy. I dont point this out to take anything away from your work. I have allot of respect for it. You take the general methods rc people use to tune their motor and put science behind it. its very ahead of its time. if most guys took it half as far as you it would be amazing. But here is the rub. permanent magnet motors are not used in applications that are horsepower driven applications. Yet all our motors are. for HP application you want max torque at average rpm not 1 rpm. applying a PMDC motor can be done by using HP and its usually a 3rd or 4th priority when maximizing it in an application. sizing for HP is something that is done primarily when running at a constant rpm or acceleration and deceleration are not important. PMDC motors are sized for an application by the discrete accel/decel rates of each segment of the motion profile.
Edited:: after watching battery video I think I need a better battery.... :)
Hello, your video was very very informative and this is the first one I've watched but I will definitely be subscribing and watching others. I see that there is no different between the 120amp and 200amp esc comparison. I'm curious on your opinion for using an 80amp esc over a 120amp esc for blinky mode? Do you think there would be a huge difference in motor performance with those amperage esc? I'm just getting into this and I'm currently using the budget turnigy trackstar combo 17.5 and seem to lack power when going for longer jumps. Turnigy trackstar 17.5 combo 80amp esc, 4600mah 100c battery, 72spur/30pinion. In order for me to make the biggest jump for indoor carpet track I have the bell timing turned to the max degree. Motor comes off the track at 140-150 degrees
You may get better results turning down the timing as high timing settings are good for maxing out top speed on long straights. What you sacrifice to achieve that is bottom end torque which translates to less acceleration.
Also there is no substitute for good batteries.
The ESC comparison is for full throttle operation. At part throttle results would likely be different.
Appreciate this advice I will definitely be turning down the end bell timing and getting better batteries!! I will test this out next time at the track. Thanks
What motor did you use for these tests?
Malcolm Norwood R1 V16 17.5
RCCrewChief thanks, just trying to correlate with my experiences.