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Old 09-13-2019, 04:50 PM
  #766  
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BobW, do you plan to add the diff height effect.
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Old 09-19-2019, 08:02 AM
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To include the effect of diff height requires the torque being delivered to the front/rear wheels to be added. This effect is a function of the tension in the belt and the height at which it is reacted to the chassis. There may be a gyroscopic effect as well but I would think it would be small. So the short answer is it is unlikely to be added as the program as extensive modifications would be required.
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Old 09-19-2019, 11:06 AM
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Thanks Bob for the reply.
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Old 09-19-2019, 12:05 PM
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Does this software calculates ( specially outdoor tracks) things like ambient temperature,track surface temperature , humidity , track conditions ,is the track sealed asphalt or regular asphalt, is it a surface like a tennis court? if the track is Dusty,traction levels?
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Old 09-19-2019, 03:33 PM
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Originally Posted by Marcos.J View Post
Does this software calculates ( specially outdoor tracks) things like ambient temperature,track surface temperature , humidity , track conditions ,is the track sealed asphalt or regular asphalt, is it a surface like a tennis court? if the track is Dusty,traction levels?
That would all be part of tyre simulation, which the software doesn't do.
You can change the temperature to see the effect it has on damping.
Also you can change the simulated amount of g-force the car is experiencing in a corner but you have to work it out or measure it yourself.
RC3 is not really a complete set up simulation but it's a great set of handy tools for getting suspension values & other things
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Old 09-19-2019, 03:42 PM
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But canít simulate the track that you are actually racing at. Thanks for the answer
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Old 09-20-2019, 12:02 AM
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Originally Posted by Marcos.J View Post
But canít simulate the track that you are actually racing at. Thanks for the answer
Even if it did, you can't just calculate track conditions, you have to go out and actually measure them, then load that data into a sim.

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Old 10-06-2019, 09:21 PM
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Hi Bob,

since the software demystifies the science behind allot of the car physics have you considered adding some things around track data?

for example you can measure a track length and time to run a lap. A traction factor can be calculated or measured by the difference between actual and theoretical or telemetry.

if you know the motion profile of a lap you can calculate the torque/rpm requirements for each section or the whole lap

if you know efficiency for each point of the torque curve you can calculate waste heat. You can measure the average temperature at the end of a race and if its less than the predicted then you specify gearing that moves the average rpm away from the efficiency average towards the power peak and vice versa if its too hot.

The difference between theoretical heat and actual is the cooling efficiency of the setup. You will have generated a thermal time constant that can be used to modify convection versus conduction or changes in ambient.

after you correct thermal and traction calculations you have constants that can be applied and used to take advantage of future changes.

a current/rpm curve of an unloaded motor can be applied as a power measurement of a loaded chassis on track with a single factor to compress it by the rpms seen on track.

timing is primarily correlated to average rpm of the motor.

just a couple ideas of how to integrate track and chassis data into torque curves or create better starting points for gearing and motors.

Brushless motor science can use averages but because of heat they are really sensitive to each discrete section of the power and efficiency curve which comes from discrete torque/rpm points per lap.
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Old 10-07-2019, 12:07 PM
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Just noticed a very strange bug: whenever I save a setup, the rear track width reduces by 0.2mm

Over time this has taken about 5mm off one of my setups leading to some very strange numbers!!
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