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ESC modes and gear ratios

ESC modes and gear ratios

Old 06-24-2015, 02:52 AM
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Default ESC modes and gear ratios

Good day to all.

Please I beg your indulgence as I ask seemingly endless questions.


Here's the setup:

Reventorn R 13.5 combo

Now in blinky mode, I always hear/read that a 4.0:1 ratio is ideal to be competitive.

Question:

Do I have to change my gear ratio when I activate the timing advance/turbo on my ESC?

My common sense is saying yes because activating that feature will generate more heat.

If I am right there, what would be the ideal gear ratio for that mode?


Respectfully,

Sagad

Last edited by SagadSetup; 06-24-2015 at 05:34 AM.
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Old 06-24-2015, 03:52 AM
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Yes. 5.5-6.0 is better for boosted settings. You need to do that as you increase the rpm of the motor and move the torque further up the Rev range depending on how much boost you are applying. Chances are if you boost 13.5 at 4:1 you'll fry the motor.
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Old 06-24-2015, 04:35 AM
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Originally Posted by dan_vector View Post
Yes. 5.5-6.0 is better for boosted settings. You need to do that as you increase the rpm of the motor and move the torque further up the Rev range depending on how much boost you are applying. Chances are if you boost 13.5 at 4:1 you'll fry the motor.
Thank you sir.

Now if may I add another question:

In motors there are rotors. There is one for torque and another for high revs.

How does that come into play?
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Old 06-24-2015, 04:52 AM
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If you use boosted mode, don't forget to decrease the endbell timing on your motor. Usually leave it at lower timing and utilise the ESC to pump timing into the motor
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Old 06-24-2015, 05:02 AM
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Originally Posted by nitro_cortex View Post
If you use boosted mode, don't forget to decrease the endbell timing on your motor. Usually leave it at lower timing and utilise the ESC to pump timing into the motor
Ah yes. I missed that aspect. Thank you!
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Old 06-24-2015, 07:55 AM
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I've used both SP Pro V3.1 and SP Stock Club for my local track.

FDR for 13.5T Blinky is 3.8 and 13.5T Boosted is at 5.8. I guess different track layout need different FDR setting.

Motor can timing and Boost on ESC add up to each other.

Anyway, advice that I got before was not to exceed 60 degrees on both motor can timing and boost applied and added up together. Don't know how much of it is true but i stick to it and so far no smoking motors...yet.

Happy Racing !
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Old 06-24-2015, 09:03 AM
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Originally Posted by EP_RC View Post
I've used both SP Pro V3.1 and SP Stock Club for my local track.

FDR for 13.5T Blinky is 3.8 and 13.5T Boosted is at 5.8. I guess different track layout need different FDR setting.

Motor can timing and Boost on ESC add up to each other.

Anyway, advice that I got before was not to exceed 60 degrees on both motor can timing and boost applied and added up together. Don't know how much of it is true but i stick to it and so far no smoking motors...yet.

Happy Racing !
Thank you sir!

More of Happy Training!
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Old 06-24-2015, 09:04 AM
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Then what would be the standard timing for boost/turbo? 0 deg? To avoid smoking? I smoke but I don't want my RC to smoke.

Additional questions:

There are stock motors, spec motors, and mod motors. What's the difference? I'm guessing in stock motors, timing can't be adjusted?

Please also I've been reading about rotors. There's torque and high rev. again what's the difference?
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Old 06-25-2015, 03:33 AM
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Originally Posted by SagadSetup View Post

Please also I've been reading about rotors. There's torque and high rev. again what's the difference?


Torque is how fast your motor gets to its top speed, a high revving motor will go faster but have less torque.
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Old 06-25-2015, 04:13 AM
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Originally Posted by tc3team View Post
Torque is how fast your motor gets to its top speed, a high revving motor will go faster but have less torque.
I;m assuming that torque can be applied for technical tracks and high rpm motors is used for tracks with long straights.
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Old 06-25-2015, 04:14 AM
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As a generally starting point for going from blinky to boosted use the following.

Blinky FDR*2-1 = Boosted FDR.

4:1 blinky = 7:1 booted.

Gearing is dependent on the rotor but I found the 12.3mm broad power band rotors to be optimal for boosted.

Reduce the can timing to 15-20 deg.

Set the ESC boost to 35-40 deg and turbo 15-20 deg for a 13.5T motor.
IE if you run 40 deg boost use 15 deg turbo.
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Old 06-25-2015, 04:18 AM
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Originally Posted by DamianW View Post
As a generally starting point for going from blinky to boosted use the following.

Blinky FDR*2-1 = Boosted FDR.

4:1 blinky = 7:1 booted.

Gearing is dependent on the rotor but I found the 12.3mm broad power band rotors to be optimal for boosted.

Reduce the can timing to 15-20 deg.

Set the ESC boost to 35-40 deg and turbo 15-20 deg for a 13.5T motor.
IE if you run 40 deg boost use 15 deg turbo.

Thanks for that information.
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Old 06-25-2015, 07:47 AM
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Originally Posted by SagadSetup View Post
I;m assuming that torque can be applied for technical tracks and high rpm motors is used for tracks with long straights.
Yes

Unless the majority of where you race is on a flowing, high speed track I'd be more inclined to get a torque motor although it is an individual preference. I'd rather have the power to get out of the corner than to be worried about the slight lack of top speed.
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Old 06-25-2015, 04:25 PM
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Originally Posted by tc3team View Post
Yes

Unless the majority of where you race is on a flowing, high speed track I'd be more inclined to get a torque motor although it is an individual preference. I'd rather have the power to get out of the corner than to be worried about the slight lack of top speed.
I was thinking the same sir. Compensate on gearing I guess.
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Old 06-25-2015, 04:35 PM
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If you are running boosted you will have heaps of punch with a 12.3mm board power band rotor.

Also if the ESC settings and gearing are correct the motor should not run hot.
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