Motor timing?

[tjsb]

Has anyone advanced the timing on these motors and if so how much?

4-pole Spektrum FIRMA 1900KV SURPASS HOBBY Rocket 3670 3050KV

SURPASS HOBBY Waterproof 4068 2650KV

[Bande1]

no. I like lower timing. LMT suggests lower timing for small props and higher timing for big props. which seems backward to me.

I lower my timing and lose 2mph but drop my wire temps on 4s minus 40f-50f

on delta motors I run 0 and only 0

[fweasel]

no. I like lower timing. LMT suggests lower timing for small props and higher timing for big props. which seems backward to me.

I lower my timing and lose 2mph but drop my wire temps on 4s minus 40f-50f

on delta motors I run 0 and only 0

What LMT recommends really only applies to their 2pole, free spinning, high RPM motors. Their settings don't apply to 4 and 6pole motors like TP, Leopard, SSS, etc.

[tjsb]

So 5 or maybe 10 advanced?

[Bande1]

So 5 or maybe 10 advanced?

start at 15 and check temps. lower cools things down. will also increase runtime a bit.

[tjsb]

Wow that high OK

Thanks

[Bande1]

Wow that high OK

Thanks

thats the standard with WYE winds. What most ESC's will have default.
very different for delta. do not try to run a delta like that or you will get smoke.

[HTVboats]

In all the years tunning for heat racing and record attempt's timing is the last and least effective way to gain performance. If you are not monitoring with a data logging system leave it low in the 5-10 degree range at most. Timing creates heat exponentially, with minor HP gain. The biggest gains are proper setup and PROPELLOR PROPELLOR PROPELLOR!
Mic

[Xrayted]

I use zero timing on any D wind motor. Increasing timing on them does nothing for performance, but will make things scorching hot, especially the capacitors, and that is what kills them. Lose the capacitors, and you can burn the ESC down due to the ripple current.

Just as a point of reference, Horizon Hobby claims that all the Pro Boat motors are "Y" wind which can get a little boost from higher timing, but the default they use on them is 7.5 degrees which they claim testing has shown to be the sweet spot on them. I would start at zero no matter what motor, and then you can creep up in small increments if you wish just see if there is any performance change at all, and also monitor the temps.

Like HTV's post above, I haven't found any increase in timing to do much of anything other than get things hotter, so I just stick with zero. Any small gains that "might" come dont seem to even be above the noise floor from one run to the next, as there are so many other things within the setup and driver skill that have a much bigger effect on the speed and end results

[tjsb]

Thanks for all the info,Im just here in Knoxville and no one is into rc boating.I got back into it cause I raced 20 some years ago and what a difference today. But I'm hooked I have almost a dozen boats 3 are like the riggers I built in the 90s.

[donhuff]

I was shown this a couple weeks ago. Kinda sums it up well. This is what I have been preaching for a long time now but it seems nobody wants to believe me. Maybe coming from Steve Neu it will be more believable. This talks about drag racing but it still applies to us boaters too.

"WILL TIMING ADVANCE MAKE ME KING OF THE STRIP?
?But what about timing advance?? you ask. Timing advance in your ESC settings can slightly increase the KV of a Y wind motor. This only works with Y wind motors, and it is only a 2 to 3% increase in RPM. This comes at a dramatic increase in heat inside the motor. Timing advance is the last option behind proper choice of Kv, optimizing gearing, wiring, connectors, battery C capability*, battery temperature, tires, overall weight, front-to-back weight distribution and track surface.

?But what about timing advance on a D wind motor?? Don?t do it. Just leave the ESC in auto mode. Timing makes no performance improvement in the system. Changing timing for a D wind motor will negatively affect performance.

If you want a higher KV motor, just order a higher KV motor. Timing advance is only for Y wind and even then it is only a patch."


FORGET ABOUT THE TIMING please







* Choose batteries carefully. C rating is often misrepresented. C rating is an indicator of how well the battery can deliver volts under the massive amp loads of these vehicles. A sag of a volt or two reduces motor speed (KV times VOLTAGE) dramatically.

[donhuff]

He also sez that when choosing a motor , select the kv you want and pay no attention to weather it is a delta or wye , it makes no difference!

[tjsb]

It makes sense what you say,I would like less heat and more run time.