Hello,

- What is the difference between Mechanical Timing vs ESC Timing?
- Are they additive, meaning if Mechanical Timing is set at 10 degrees and ESC Timing at 10 degrees do you end up with a total of 20 degrees?
- Why would you choose to adjust ore relative to the other, or is it indifferent?
- In Blinky Mode with the ESC at zero timing, is Mechanical Timing still allowed or is it overridden by the ESC?

Many thanks!

Id ask the mods to shift this over to the Radio and Electronics forum. might get more exposure

I was wondering a question similar to this myself. I do have an initial answer but I would like to take the question farther.

As I understand how it works the ESC will add whatever timing you set above any of the mechanical timing on the can of the motor. So if you have your can at 15 degrees and you ask the ESC for an additional 20 degrees at max boost you are pushing a total of 35 degrees at max boost.

My question is for those racers that use spec class motors in MOD class; is it better to set the mechanical timing according to what you would run in Blinky and then add a small amount of boost timing on top of that...

OR reduce the mechanical timing on the motor to take advantage of more lower end torque then add more ESC boost timing for higher end RPM for the straights?

Example:
25 degrees on motor (set for Blinky) + 15 degrees Boost Starting @10K RPM for a total of 40 degrees at max Boost level
VS
0 degrees on motor + 40 degrees boost Starting @ 10K RPM for a total of 40 degrees at max Boost

This is far & away the best explanation I've found on this subject:

https://pphaneuf.github.io/rccars/ar...timing-theory/

This article completely blew my mind and answered my questions! This is totally worth bookmark status.

super helpful but questions remain. I recently built a 1/8 buggy with an HW Xerun XR8 Plus and 4268SD motor. I saw settings in the setup for Boost and Turbo but didn't enable them leaving that for a later date. So now I am interested and I looked them up in the manual

Three settings come into play:
Mode: Hybrid or Full Sensored
Boost: 0-15 degrees
Turbo: 0-15 degrees

But, per the ESC manual Boost is only active in Hybrid mode and Turbo is only active in Full Sensored mode.
So you can either have Hybrid mode with Boost or Full-sensored mode with Turbo.

Which is better? What are the pros and cons? How would one choose?

They're additive. The advantage of ESC timing is that you can have different timing values over different RPM ranges which is much more efficient. The advantage of mechanical timing is that you can use it in blinky classes.

I never had any luck using timing nor boost in my 1/8 classes without causing thermal issues, I found it far more effective to gear properly, I actually tend to gear 1 tooth higher and use the dual rate to back off the throttle to tune for a given layout. Honestly, if I ran at 100% EPA with the current gearing on both my 1/8 rigs, then I risk un-gluing a front tire

What I like about over gearing 1 tooth is that it slows my acceleration a pinch so I can get on the throttle harder.... some folks in my area are swearing by the Tekno clutch, seen them drop a full second on 37sec lap avg for the track in my area... I plan to get the Tekno clutch myself in the near future:
https://blog.teknorc.com/2018/10/12/...-drive-system/