Dynamite 3835 1500Kv

[fweasel]

Does anyone know what the 3930 1750kv 4 pole or 3935 1650kv 6 pole are.

I do not, nor have I been able to find it when searching the internet. I'll PM Rafael Lopez and see if he knows...

[Revolt Flash]

Cool, That a good idea .

[Rafael_Lopez]

All Dymanite marine inrunner motors are D wind. DYNM3875/6's timing is set at 7.5* for this reason.

[Revolt Flash]

Thanks Rafael

[TRUCKPULL]

All Dymanite marine inrunner motors are D wind. DYNM3875/6's timing is set at 7.5* for this reason.

Rafael
So you are saying that the DYNM3835 1500kv - 6 pole - 2 turn - is a "D" wind??
Yet it has a connector for the winding wires inside the rear of the motor can.

Timing - normally for boats we set the timing .
"D" wind = 0 to 5 degrees
"Y" wind = 10 to 15 degrees

Yet above in your post you say that for a DYNM3875 ESC - timing is set at 7.5 degrees
Timing on a "Y" wind will increase RPM but at the same time reduce torque.
Timing on a "D" wind above say 1 degree does nothing for the motor except cause HEAT.

If all Dymanite marine inrunner motors are "D" winds, why set the timing on this motor at 7.5 degrees???


Larry

[Rafael_Lopez]

Rafael
So you are saying that the DYNM3835 1500kv - 6 pole - 2 turn - is a "D" wind??
Yet it has a connector for the winding wires inside the rear of the motor can.

Timing - normally for boats we set the timing .
"D" wind = 0 to 5 degrees
"Y" wind = 10 to 15 degrees

Yet above in your post you say that for a DYNM3875 on 6's - timing is set at 7.5 degrees
Timing on a "Y" wind will increase RPM but at the same time reduce torque.
Timing on a "D" wind above say 1 degree does nothing for the motor except cause HEAT.

If all Dymanite marine inrunner motors are "D" winds, why set the timing on this motor DYNM3875 at 7.5 degrees???


Larry

Larry, It's no secret that Hobbywing makes all our Dynamite ESCs. Team Orion makes our motors, I'm sure most everyone in RC has heard of them. When we group these 2 together, both companies work to tune the ESC to the motor and make changes to the either if necessary to optimize performance. The settings come from the manufacturers after they have tested both components together to ensure proper operation; we don't just grab 2 items off the shelf and assume they will work good together. The ESCs setting at 7.5* of timing for our OEM motors is the ideal setting for the motor being made for us. The ESC is programmable so if you feel it works better at your assumed timing setting, then by all means lower it.

I'm not an electronics engineer so I wont engage in an argument, I can only give you facts of how we test and develop our products.

[fweasel]

Rafael, thank you for your input!

[TRUCKPULL]

Rafael
Ok I understand now.
With what you said, could you tell us at what timing setting was set to with the DYNM3835 1500kv in the original boat??

Larry

[T.S.Davis]

I run zero timing on the Dyno motors. They never get hot that way.

[donhuff]

Well Rafael,

I have UNwound, and then rewound, about 6 or 8 of the dynamite 3835 1500 kv motors so for. And all of them WERE wye connected. 2 Wye to be exact.

I have another one that I will be "unwinding" tomorrow. If you like, I will take some pictures of it, and show all, that it is truly a WYE wind. And if ya don't know what the difference in the two is, and would like to know, say so, and I can post a few pictures of wire (bundles) and stators and motors to explain.

BTW, I have always run my Ys at 15* timing. and last week I ran a Delta at 15*( because I didn't check the ESC timing, before running it) and it did OK. (no mushroom cloud!) Don't remember if it got hot or not,but I don't think so, at least no hotter than anything else.

[30nitro]

That's great info...!!! I'll be runnin my 1500at 15° timing from now on....

[donhuff]

I was running one on the bench and at 0*, it was "skipping" a beat now and then, same at 3.75, a little better at 5, but at 7.5 it seemed to smooth out. Then at 15 it was very smooth.
and at 26* just as smooth but 900 rpm more than at 0*. I don't think YOU should run one at 26, but I, got's to try it one day.

This was without a load,and I think it was a delta wind, so don't expect the same results on the water. I'll have to test it one day to see if it makes much difference on the water and delta vs wye/low vs high.

But yeah, I have been running my AquaCraft motors at 15* for the past 3 years, and they do fine.Just got a dynamite 1500 a few months ago and it 's been running at 15* also.

[TRUCKPULL]

Well Rafael,

I have UNwound, and then rewound, about 6 or 8 of the dynamite 3835 1500 kv motors so for. And all of them WERE wye connected. 2 Wye to be exact.

I have another one that I will be "unwinding" tomorrow. If you like, I will take some pictures of it, and show all, that it is truly a WYE wind. And if ya don't know what the difference in the two is, and would like to know, say so, and I can post a few pictures of wire (bundles) and stators and motors to explain.

BTW, I have always run my Ys at 15* timing. and last week I ran a Delta at 15*( because I didn't check the ESC timing, before running it) and it did OK. (no mushroom cloud!) Don't remember if it got hot or not,but I don't think so, at least no hotter than anything else.

Don

Please post pictures of the dynamite 3835 1500 kv.

Larry

[donhuff]

OK Larry,

It may be later tonight or this weekend before I can get to it though. I'm not very computer savvy and it takes me a while to post them. I did take that one apart and a Delta at the same time and took the pictures while doing it. The pics will clearly show the difference.

After I show these, I'm planing to lay out some wire "bundles" as I call them, and explain some of the differences in the two winds. I'm still working (in my head) on a way to lay them out so it makes good sense to everybody. It's hard to do that because of the stator being a cylinder,the wires get all screwy looking during the winding steps. I'll try to lay it out flat, and then you'll have to imagine how the two ends go together. I also have a drawing of a stator with all the 3 legs on it in 3 different colors. That drawing explains it "simply" LOL, once you have a little understanding of what's going on.


I took a stator to the pond a couple weekends ago and showed Smock how it's done. About 2 minutes in, he was giving me that glazed over look. I could hear his brain saying please, PLEASE, just shut up and drive a boat!

[fweasel]

donhuff, looking forward to the pics and information. Thanks for doing that.