Current (Summer `09) E-SSC Power Systems
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- Ed Kettler
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- Location: USA
- Contact:
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- Posts: 3330
- Joined: Thu Jun 20, 2002 10:30 pm
- Location: USA
It is, or I guess was, the silver SK series. Brand new.
I didn't have the watt meter in line yet. I was just trying to get it initially set up with the radio and was going to tune it after getting a rough setting. It only seemed to be turning around 15k but that was just based on feel and sound.
I've picked up several batteries for a 5S setup so I'd hate to have to get new 4S batteries. Since the motor is shot, should I go to the 1100kv motor?
My concern is that the 1100kv has a lower watt rating so I expect it won't hold up any better and will only need less dialing back on the ESC. But my throttle end point was only at 60% so I doubt that I was that high up in RPMs. The motor was only running about 30 seconds. The prop was balanced etc.
???
I don't think I was drawing a lot of amps but not sure since I didn't have the watt meter set up yet. Sure wish that airplane ESCs had current limiters like old RC car ESCs.
What really has me bummed is I was getting it set for a first flight and am now grounded.
I didn't have the watt meter in line yet. I was just trying to get it initially set up with the radio and was going to tune it after getting a rough setting. It only seemed to be turning around 15k but that was just based on feel and sound.
I've picked up several batteries for a 5S setup so I'd hate to have to get new 4S batteries. Since the motor is shot, should I go to the 1100kv motor?
My concern is that the 1100kv has a lower watt rating so I expect it won't hold up any better and will only need less dialing back on the ESC. But my throttle end point was only at 60% so I doubt that I was that high up in RPMs. The motor was only running about 30 seconds. The prop was balanced etc.
???
I don't think I was drawing a lot of amps but not sure since I didn't have the watt meter set up yet. Sure wish that airplane ESCs had current limiters like old RC car ESCs.
What really has me bummed is I was getting it set for a first flight and am now grounded.
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- Joined: Thu Jun 20, 2002 10:30 pm
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Knife,
Way too cool. Consider it sent. I was planning to get a couple more AFTER checking one out to see if it worked as expected.
I put together an EFalcon and all up it was at 41oz ready to roll. I was really pumped about flying it when the smell of the burnt motor dashed my plans to dust.
BTW, if you have the magnet wire and some instructions I might take to winding up some motors. In a past life (that is, 30+ years ago) I was a speaker engineer and spent some time winding custom voice coils for speakers and also wound pickups for an old guitar I built. The idea of hand winding a motor sounds interesting.
Way too cool. Consider it sent. I was planning to get a couple more AFTER checking one out to see if it worked as expected.
I put together an EFalcon and all up it was at 41oz ready to roll. I was really pumped about flying it when the smell of the burnt motor dashed my plans to dust.
BTW, if you have the magnet wire and some instructions I might take to winding up some motors. In a past life (that is, 30+ years ago) I was a speaker engineer and spent some time winding custom voice coils for speakers and also wound pickups for an old guitar I built. The idea of hand winding a motor sounds interesting.
-
- Posts: 3330
- Joined: Thu Jun 20, 2002 10:30 pm
- Location: USA
- Ed Kettler
- Posts: 3437
- Joined: Sat Dec 15, 2001 6:05 pm
- Location: USA
- Contact:
Had a couple of successful flights on Saturday with the Turnigy SK 3536/1400 using a 2650 4S pack. Unfortunately the Corona synthesized receiver died and the plane went in, so I don't have any baseline data on the power draw and consumption. The concept looks promising, as I can easily get to minimum weight.
Will do more testing over Christmas break
Will do more testing over Christmas break
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John, 22 guage works well. I`ve rewound your motor for 5s. I`m sending it back to you. I had to use one of my bells because yours had a lot of damage on the inside. The magnets had been rubbing on the stator and part of the ring that positions the magnets was gone.
It pulls about 19a at 17.5k and 23a at 18.5k. It will pull less at 5k feet.
It pulls about 19a at 17.5k and 23a at 18.5k. It will pull less at 5k feet.
Thanks and please send winding info.
I wonder if I just got a bad motor right off the bat as I noticed a funny sound pretty quickly at low rpms.
Do you think the 1100kv motor is a better match for a 5S setup?
Seems like it would need less dialing back but should have no problems in reaching 17,5k. Looking forward to some E-SSC flying.
I wonder if I just got a bad motor right off the bat as I noticed a funny sound pretty quickly at low rpms.
Do you think the 1100kv motor is a better match for a 5S setup?
Seems like it would need less dialing back but should have no problems in reaching 17,5k. Looking forward to some E-SSC flying.
- Ed Kettler
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- Which_way_is_up
- Posts: 1637
- Joined: Tue Feb 12, 2002 8:54 am
- Location: Dallas, Texas
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Lee Liddle</i>
<br />John, 22 guage works well. I`ve rewound your motor for 5s. I`m sending it back to you. I had to use one of my bells because yours had a lot of damage on the inside. The magnets had been rubbing on the stator and part of the ring that positions the magnets was gone.
It pulls about 19a at 17.5k and 23a at 18.5k. It will pull less at 5k feet.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Lee, what configuration do you use "Star" or "Delta" and how many poles does the stator on these motors have?
<br />John, 22 guage works well. I`ve rewound your motor for 5s. I`m sending it back to you. I had to use one of my bells because yours had a lot of damage on the inside. The magnets had been rubbing on the stator and part of the ring that positions the magnets was gone.
It pulls about 19a at 17.5k and 23a at 18.5k. It will pull less at 5k feet.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Lee, what configuration do you use "Star" or "Delta" and how many poles does the stator on these motors have?
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These motors are 14 pole 12 stator motors.
Here`s the winding diagram that I use. I used 9 turns of 22 gauge wire on the 5s motor for John and did the termination like the diagram shows, which I think is a "y".
I`ll do another wind, as soon as I have time, and I`ll take some pics that will help.
There are some excellent threads on RC Groups in the electric motor section on winding motors. That`s were I went to learn. I spent several nights reading, then tore down a couple of old burned up motors to figure how to do it properly. Once I had a usable clean stator, I bought some magnet wire from RS and did a practice wind with very light gauge wire. The first wind was successful.
So it can be done, but you have to put some effort in to it.
I`m no expert. I know how to do this one wind pattern. It`s fairly easy and works great with these motors that we are using. It takes some work and practice, but if you can wind your own motors, it will save a bunch of money in the long run, and you end up with exactly the motor you need not just what is available over the counter.
Here`s the winding diagram that I use. I used 9 turns of 22 gauge wire on the 5s motor for John and did the termination like the diagram shows, which I think is a "y".
I`ll do another wind, as soon as I have time, and I`ll take some pics that will help.
There are some excellent threads on RC Groups in the electric motor section on winding motors. That`s were I went to learn. I spent several nights reading, then tore down a couple of old burned up motors to figure how to do it properly. Once I had a usable clean stator, I bought some magnet wire from RS and did a practice wind with very light gauge wire. The first wind was successful.
So it can be done, but you have to put some effort in to it.
I`m no expert. I know how to do this one wind pattern. It`s fairly easy and works great with these motors that we are using. It takes some work and practice, but if you can wind your own motors, it will save a bunch of money in the long run, and you end up with exactly the motor you need not just what is available over the counter.
- Which_way_is_up
- Posts: 1637
- Joined: Tue Feb 12, 2002 8:54 am
- Location: Dallas, Texas
Lee, thanks for the info. I don't have any motors to re-wind (yet) [:)] but I've started reading some of the info I've "googled" and it's interesting and relatively easy to do, all the variables are what can make it hard but staying within a set of limits makes it much easier.
I'd be glad to help you take some pictures if you like. Four hands better then two and all that. . . .
I'd be glad to help you take some pictures if you like. Four hands better then two and all that. . . .
- Which_way_is_up
- Posts: 1637
- Joined: Tue Feb 12, 2002 8:54 am
- Location: Dallas, Texas