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Ace Hobby . Esprit Model . Thunder Power RC

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e-JR Voyager E > Stock Motor timing
 
 
rodneybarrett
Heliman
Location: Brentwood, TN USA

So where is everyone running their stock motor at? timing wise.
03-16-2004 Over year old.
 
 
Ralphw
Key Veteran
Location: Spring, TX

All I did with mine was to true the commutator and run it at stock timing. That was the best power and endurance with the least brush wear and heat build-up. Then I went brushless and put all that crud behind me !!!

Ralph W.
"Life's Short, Fly Fast"
03-16-2004 Over year old.
HOMEPAGE  
 
 
rodneybarrett
Heliman
Location: Brentwood, TN USA

I think this may be some of my problem with the hoovering (the other topic). I hooked the motor up to my turbo35 and the motor was running backwards. The endbell was 180 degrees off.

I bought this helicopter used so I don't have a baseline

For all I know, I could have had the other setup backwards.

Anyways, you said stock timing, where is that? I see one small slit on the can. Should I line that up with one of the endbell indentions?
Also, should this motor counter clockwise when looking at it from the front?


BTW, yesterday, I was able to get 1540RPM out of my batteries and could hover a little bit.

thanks for your help.

And, I know, I need to get a brushless system soon. But with me still trying to learn, the stock is probably good right now.
03-16-2004 Over year old.
 
 
Ralphw
Key Veteran
Location: Spring, TX

Rodney,

I flew mine on the stock motor and 8 cells (Sub C) for quite a while. As I remember it, there should be a couple of marks, one on the can, and one on the end bell. The one on the end bell was a notch between the + and - posts on the motor. The one on the can is a vertical mark at the edge of the can (in my case very close to one set of the vents for the can.

Lining those up should put you in the ballpark. If you know a good e-car guy, they can help a lot on the timing issue as well as truing the comm (definitly worth doing).

The motor should rotate clockwise when viewed from in front and above. If it's going the other way, you will be going with the one bearing (auto bearing) on the main gear and there is no way it will fly then. As was mentioned in previous posts, make the switch to the Sub C eight cell batteries and I'd almost bet you get a major improvement.

Ralph W.
"Life's Short, Fly Fast"
03-16-2004 Over year old.
HOMEPAGE  
 
 
rodneybarrett
Heliman
Location: Brentwood, TN USA

Ralphw,

I really do apprieciate all of your input. Very helpful.

Come to find out, this motor need to run reverse to work correctly.
I am actually an old e-car guy (mostly nitro cars now though) and in this case I think it hurt me.

From my car days, I use motor fans to break in engines and the air is always suppose to blow thru the motor. Then for timing you would turn the endbell counter clockwise to advance.

Well....When I first got this helicopter, I took the motor out to cut the comm. I had noticed that it looked to me like the motor had retarded timing in it (was to the right of the zero timing). I said ah-hah, this heli guy I bought from didn't know much about electric motors. I'll make it better and put 10 degree of advance timing in and it will run better.

Little did I know at the time, but I was the one who put retarded timing in, probably causing most of my headaches to date.

Once I realized and confirmed with another e-car guy, it made sense and the original owner did have it in the right place after all.

I do keep hearing you guys talk about the batteries and it very well could be them, but even yesterday with retarded timing, I was getting 1540 RPM at about 7 degrees of pitch. I am willing to bet I can get 1600RPM pretty easy now that the motor is set correctly.

I'll check back in once I have tested this.
03-16-2004 Over year old.
 
 
Ralphw
Key Veteran
Location: Spring, TX

LOL....e-helis keep you on your toes. If your an old (former...not old) e-car guy then you're already a step ahead. Cutting the comm pays big dividends...mine looked like it was rough cast when I first pulled it. Make sure that you use the stock brushes though. I tried several different types and brands and all were junk compared to the stocks. Downside to the stock is they are soft and the motor can really go through them (although truing the comm helps a bunch). It's also worthwhile to open the can up and pull the little black plastic piece thats on the end of the armature. As the brushes wear, the dust collects on it and allows current to short across the armature poles. Several folks had theirs die completely, only to be resurrected by pulling the plastic thing (dont know if it's supposed to be a fan or a part of the manufacturing process). Good luck with it now that you're back on track !!

Ralph W.
"Life's Short, Fly Fast"
03-16-2004 Over year old.
HOMEPAGE  
 
 
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Mikado Modellhubschrauber . GrandRC . CanoMod

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e-JR Voyager E > Stock Motor timing
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