Best timing for 14 pole B/L motor

[iva]

What is the optimum timing for a 14 pole brushless motor?
The motor is Plettenberg Freestyle 24.
I am interested in highest efficiency, not the highest RPM.
Thanks,

Zoran

[vintage1]

Best will depend on RPM and load. Probably yoir best bet is simply to get a controller with adjustable timing, a current measuring and RPM measuring device, put the prop of choice on, and try them all.

[rpage53]

Good question. I would assume 30o but a quick look at the Plettenberg instructions revealed nothing.

Rick.

[Gordon]

Send an email to Plettenberg and quote your esc. It'll take a week or so to get an answer, but I think they will reply OK.

Pletti seem to develop their motors in conjunction with Schulze escs, and the Schulze esc instructions don't refer to degrees of advance. They talk about hard and soft timing.

For Plettenberg motors, Schulze recommend hard timing, which presumably means a large advance.

FWIW, the same timing is recommended for Kohler (ie Actro) motors, which are also 14-pole.

Gordon

[iva]

Hi Gordon,

I did already (Hacker Master 18-3P) and Mr. Plettenberg answered that any timing is OK and that mode 4 will give most RPM. I am running mine in mode 3 (18 deg. compared to 30 for mode 4).
Generally, I am much more comfortable when I am able to understand the rule and hopefully it will surface here on the list.
Thanks,

Zoran

[Gordon]

Hi Zoran

How many timing settings do the Hacker Master escs have? You quote 30deg and 18deg. Are there any more?

The new Schulze future-universal escs have 4 timing settings - hard, medium, soft and very soft!

I can't say that I fully understand their instructions, and like you would appreciate someone explaining the "rules" on this forum :)

Gordon

[iva]

Hi Gordon

There are four timing modes available:

1. 1-5 deg.
2. 10 deg.
3. 18 deg.
4. 30 deg.

Timing mode 3 is described as the best for 6 or more pole motors and timing mode 4 is to be used for the highest RPM on Plettenberg and Axi motors. By analogy timing mode 3 should be "medim" in Schulze terms and timing mode 4 should be their "hard". However there is a big gap between 6 and 14 poles, so question remains: which is the best?
Jurgen's initial report on Freestyle 24 says that he was unable to match Plettenberg's figures while using Kontronic ESC.
That could be indication that both timing and switching frequency are important for optimum results.

Zoran