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Old Aug 30, 2010, 08:13 PM
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rccardude04's Avatar
Wichita, Ks
Joined Jun 2005
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Quote:
Originally Posted by plowboy1966 View Post
What's up fellas? What did I miss? I see a bunch of deleted posts.

Don't worry about it... lol

-Eric
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Old Aug 30, 2010, 08:44 PM
Montana Transplant
mt_flyer's Avatar
United States, OR, Klamath Falls
Joined Aug 2005
1,929 Posts
Quote:
Originally Posted by waynemia View Post
Yea, those are my suggestions too. It is most likely timing and prop loading. You can increase the timing and it should improve or go away. You can also look at a softer start if your ESC has that option.

If you put a really small prop on and it is still there, check the motor in case you have something rubbing or bearing issues. You need some kind of prop to get some thrust pulling on the prop shaft in case that is the issue.

Do the timing first, then softer start, then prop is my suggestion.

I ordered the RR Electrostik. The thing squealed like a pig and the Silver Series ESC in it had NO timing or any other adjustments. I put a Turnigy ESC in and got rid of the problem. The ESC that came with it is OK, it is just not good with this motor.
round 2 for the "squealer....

I reset the timing to HI.... still squeels.. changed to soft start.. still there
I went an got a lighter prop.. 11 x 8 topflight wood... squeal gone...
amps went to 42A static... lots more thrust.. lots of throttle management to keep amps down..

Thanks for the suggestions would have never figured it out without ya...
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Old Aug 30, 2010, 08:44 PM
Do Da Dippidy
plowboy1966's Avatar
Joined Jun 2008
7,305 Posts
Quote:
Originally Posted by rccardude04 View Post
Don't worry about it... lol

-Eric

I won't.
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Old Aug 30, 2010, 09:15 PM
BANG IT!!!
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United States, PA, Bellefonte
Joined Dec 2007
12,184 Posts
Quote:
Originally Posted by mt_flyer View Post
round 2 for the "squealer....

I reset the timing to HI.... still squeels.. changed to soft start.. still there
I went an got a lighter prop.. 11 x 8 topflight wood... squeal gone...
amps went to 42A static... lots more thrust.. lots of throttle management to keep amps down..

Thanks for the suggestions would have never figured it out without ya...
Something about those motors like the wood and APC Sport, and the pull harder too.
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Old Aug 30, 2010, 09:28 PM
3.14159265358979323846264
rccardude04's Avatar
Wichita, Ks
Joined Jun 2005
1,986 Posts
Quote:
Originally Posted by mt_flyer View Post
round 2 for the "squealer....

I reset the timing to HI.... still squeels.. changed to soft start.. still there
I went an got a lighter prop.. 11 x 8 topflight wood... squeal gone...
amps went to 42A static... lots more thrust.. lots of throttle management to keep amps down..

Thanks for the suggestions would have never figured it out without ya...

Can you lower the PWM frequency?

-Eric
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Old Aug 30, 2010, 09:31 PM
Crazy Pilot-gone insane...
United States, CT, Norwalk
Joined Nov 2009
117 Posts
Quote:
Originally Posted by waynemia View Post
Hi Chris,

"Wierd" is not a good thing with electronics. You have a 70A meter and you should be getting more current indicated on that setup. I would check the meter on another setup first. See if the meter is defective.

I looked at the pictures and it looks like you have the packs in series correctly. 12.45A @ 240W is just 19.28V. This is much lower than it should be. Perhaps the batteries are not fully charged or the packs are not balanced.

Also, that motor is rated for 29V max voltage. You may need more voltage to get the maximum power from the motor.

JMHO but I would sort out the problem before flying.
Here you go Wayne- Thanks! Specs from Tower Hobbies about the Astro Whatt meter


I am going to Maiden her tomorrow- There will be a video... I'll post a youtube link!

Catch you on the Twist-Side!

SPECS: Amp meter: .1 to 70A
Volt meter: 2.5 to 60V
Watt meter: 1 to 5000W
mAh (milliamp hour): 1 to 9000mAh
Length: 3-15/16"
Height: 7/8"
Width: 2-1/8"

So I must've been pulling more than 70 amps :-) no problem HERE!!!!! I like big numbers... Dangit- now I have to get a better watt meter!
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Last edited by harttvboy; Aug 30, 2010 at 09:32 PM. Reason: More info
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Old Aug 30, 2010, 09:50 PM
Fly now crash later
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Canada, ON, Newmarket
Joined Nov 2006
2,245 Posts
I have the Turnigy watt meter and the "Watt's up" meter. there both good, can't tell the differance.

http://www.hobbycity.com/hobbycity/s...dProduct=10080
Spec.
Operating voltage: 4.8~60V (0V with optional auxiliary battery)
Measures;
0~130A, resolution 0.01A
0~60V, resolution 0.01V
0~6554W, resolution 0.1W
0~65Ah, resolution 0.001Ah
0~6554Wh, resolution 0.1Wh
Screen: 16x2, backlit LCD display
Size: 85x42x25mm
Weight: 82g
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Old Aug 30, 2010, 10:04 PM
Crazy Pilot-gone insane...
United States, CT, Norwalk
Joined Nov 2009
117 Posts
Quote:
Originally Posted by davecrash View Post
I have the Turnigy watt meter and the "Watt's up" meter. there both good, can't tell the differance.

http://www.hobbycity.com/hobbycity/s...dProduct=10080
Spec.
Operating voltage: 4.8~60V (0V with optional auxiliary battery)
Measures;
0~130A, resolution 0.01A
0~60V, resolution 0.01V
0~6554W, resolution 0.1W
0~65Ah, resolution 0.001Ah
0~6554Wh, resolution 0.1Wh
Screen: 16x2, backlit LCD display
Size: 85x42x25mm
Weight: 82g
Amp meter: .1 to 70A
Volt meter: 2.5 to 60V
Watt meter: 1 to 5000W
mAh (milliamp hour): 1 to 9000mAh
Length: 3-15/16"
Height: 7/8"
Width: 2-1/8"

You can measure almost twice the amperage
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Old Aug 30, 2010, 10:16 PM
3.14159265358979323846264
rccardude04's Avatar
Wichita, Ks
Joined Jun 2005
1,986 Posts
Quote:
Originally Posted by harttvboy View Post
Here you go Wayne- Thanks! Specs from Tower Hobbies about the Astro Whatt meter


I am going to Maiden her tomorrow- There will be a video... I'll post a youtube link!

Catch you on the Twist-Side!

SPECS: Amp meter: .1 to 70A
Volt meter: 2.5 to 60V
Watt meter: 1 to 5000W
mAh (milliamp hour): 1 to 9000mAh
Length: 3-15/16"
Height: 7/8"
Width: 2-1/8"

So I must've been pulling more than 70 amps :-) no problem HERE!!!!! I like big numbers... Dangit- now I have to get a better watt meter!

I've pulled 112A through my Watt's Up meter.

Can you take a video of what's going on? I envision the meter freezing after 1/4 throttle then the throttle increasing with no change in meter readings.

BUT, if it slowly creeps up to 12.5A, you're not going to have much power. It's probably accurate in this case.

-Eric
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Old Aug 30, 2010, 10:20 PM
Crazy Pilot-gone insane...
United States, CT, Norwalk
Joined Nov 2009
117 Posts
Quote:
Originally Posted by rccardude04 View Post
I've pulled 112A through my Watt's Up meter.

Can you take a video of what's going on? I envision the meter freezing after 1/4 throttle then the throttle increasing with no change in meter readings.

BUT, if it slowly creeps up to 12.5A, you're not going to have much power. It's probably accurate in this case.

-Eric
It actually gets to the above around 1/4th throttle, does not freeze but slightly fluctuates on the wattage side but on the voltage side I can see a definite difference-goes from like 24.5v to something like 23v ish maybe even 22v ish
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Last edited by harttvboy; Aug 30, 2010 at 10:21 PM. Reason: clarification
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Old Aug 30, 2010, 10:22 PM
Crazy Pilot-gone insane...
United States, CT, Norwalk
Joined Nov 2009
117 Posts
Quote:
Originally Posted by harttvboy View Post
It actually gets to the above around 1/4th throttle, does not freeze but slightly fluctuates on the wattage side but on the voltage side I can see a definite difference-goes from like 24.5v to something like 23v ish maybe even 22v ish
It did this with two props- a 15x10 (overkill, I know- just wanted to try it) and with the 14x7. Thanks guys!
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Old Aug 30, 2010, 10:43 PM
Registered User
North vancouver, B.C. Canada
Joined Apr 2008
18,473 Posts
when the motor sweeles or makes that noise it is a bad thing and maybe over proped
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Old Aug 31, 2010, 07:32 AM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
7,226 Posts
Well boys and girls, an ELECTRIC replacement for a 110cc engine at 20+ Hp. Says it will take a 70V power pack with a 250A ESC. Power at 225A and 70V is 15,750W!

http://www.hobbyking.com/hobbyking/s...dProduct=14427
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Old Aug 31, 2010, 08:13 AM
Walk of Shame Season :)
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NY
Joined Jun 2008
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Old Aug 31, 2010, 08:28 AM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
7,226 Posts
Quote:
Originally Posted by davecrash View Post
I have the Turnigy watt meter and the "Watt's up" meter. there both good, can't tell the differance.
I have both as well. You gus that don't fly electric stuff, this is still a good meter to have. You can put it between your battery and receiver and check the peak amps and minimum voltage while moving all the servos. This can let you estimate your flight times for a given battery configuration. You can also fly with this in the plane and determine how much power you used for a given flight.

The Turnigy is about half the wattsup price.

Good morning Waldo.
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