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Old Nov 21, 2007, 09:56 AM
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Quote:
Originally Posted by donjiskra
Guys, be advised:
Page 38 of the manual states "If using the Park 480 motor please use the throttle respectively. This is a high power setup which can easily push the model to a very high speed envelope. Ensure you reduce throttle during any downline maneuvers."

Also on page 3:
High Power Setup
EFLM1505 Park 480 Brushless Outrunner Motor, 1030Kv
EFLA312B 40 Amp Brushless ESC
APC12060E 12x6 Electric prop
EFLB21003S 11.1V 2100mAH 3-Cell Li-Po, 16 GA
or THP21003sPL 2100 mAH 3-cell 11.1V Li-Po, 16 GA

Sport Outrunner Setup
EFLM1400 Park 450 Brushless Outrinner Motor, 890Kv
EFLA 1025 25-Amp Pro Brushless ESC
EFLB21003S 11.1V 2100mAH 3-Cell Li-Po, 16 GA
EFLP1080E 10x8 Electric prop
or THP21003sPL 2100 mAH 3-cell 11.1V Li-Po, 16 GA
With regards to those Motor Calc Estimates you posted and the above setups....I really don't understand the reasoning for going to a larger Diameter Propeller knowing full well that you are jumping into a higher Kv Brushless Outrunner (480) and thereby your resulting poor lack luster efficiency (a Brushed 480 "can" motor be more efficiency in gearbox!!!)

I am sure it's perhaps within the manual? I don't know but, certainly the setup with the 450 is much more efficiency as it has more Torque (Kt) than the 480.
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Old Nov 21, 2007, 10:46 AM
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donjiskra's Avatar
Darien,IL,USA
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Guapoman,
What I posted is directly from the manual.
That is what they stated, not from me.
I know that you are an advocate of brushed motors, and you may be right. What combination would you recommend?
Enlighten us, OK?
I'm not being a smart a**, I really would like to know your recommendation,
Thanks,
Don
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Old Nov 21, 2007, 12:00 PM
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Quote:
Originally Posted by donjiskra
Guapoman,
What I posted is directly from the manual.
That is what they stated, not from me.
I know that you are an advocate of brushed motors, and you may be right. What combination would you recommend?
Enlighten us, OK?
I'm not being a smart a**, I really would like to know your recommendation,
Thanks,
Don
Don,

Yes, I did realize that the information you posted was perhaps from the manual and thanks for your kind manner.

Should you guys like to still go with the recommended Motor that E-Flite lists.....and like the larger 480 Brushless Outrunner E-Flite line then, instead of going with the E-Flite 480 1030Kv motor, I would select the E-Flite 480 with the 950Kv as this will provide you with additional Torque (Kt) to swing that larger 12 inch diameter propeller and do so with much better resulting efficiency.

Park 480 BL Outrunner Motor, 910kV
E-flite EFLM1500


http://secure.hobbyzone.com/catalog/.../EFLM1500.html

Assuming 3-Cell 2100mAH Li-POLYs of at least 15C discharge ratings....I have attached two possible setups using nothing over 10 inch diameter propeller as one for those that like airspeed and super low AMP draw (yes, Watts is low due to airspeed trade-off) and the other setup is for those that like additional thrust
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Old Nov 21, 2007, 12:19 PM
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Caution if those chart images are from the online calculators. In my, and many others experiences, the online calcs can be way off. Far enough off, that is, to influence your component selections.

That's not to say the previous posters suggestion may not be a good one- I just would take the chart info with a hangar of salt.
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Old Nov 21, 2007, 12:22 PM
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Last edited by guapoman2000; Nov 21, 2007 at 08:46 PM.
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Old Nov 21, 2007, 12:28 PM
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Now, I am not recommending anyone from deviating from those recommendations within the manual but, for those with experience setting up Electric Power combinations then, here's some interesting combo deals that just might work.....

http://www.rchotdeals.com/Products/r...60A_combo.html

http://www.rchotdeals.com/Products/r...60A_combo.html

I would consider outrunners with close to 1000Kv as possible
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Old Nov 21, 2007, 12:48 PM
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Quote:
Originally Posted by guapoman2000
I do agree with your post......in my experience using this quick P-Calc from Diversity Models, they at times are a little higher in AMP draw than in reality, however, this is a GOOD thing as I am very conservative and I certainly don't want anyone to burn up their ESC or worse short a winding up due to a under rated estimate.
The problem I ran into was they were too low in their Amp estimates. Thx.
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Old Nov 21, 2007, 01:02 PM
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I have three on the shelf!


Quote:
Originally Posted by blakevan
My LHS also said that their's would ship on the 23rd. I guess I will have to wait another week. Bummer
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Old Nov 21, 2007, 01:05 PM
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Old Nov 21, 2007, 04:22 PM
Gravity gets me down.
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United States, WI, Milwaukee
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Quote:
Originally Posted by guapoman2000
Yeah, it is important to select a robust Virtual Battery when you pull down the type of Battery...I usually use a high rate "or" setup a 3S2P to allow for the highest AMP draw.

You are welcomed
That was done and it was still about 20% off.
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Old Nov 21, 2007, 05:17 PM
Ta-dah!
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http://www.rcuniverse.com/forum/m_64...tm.htm#6655585

Not sure if this is okay or not but here are some pics and somewhat of a build log.
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Old Nov 21, 2007, 06:08 PM
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Old Nov 21, 2007, 07:03 PM
Gravity gets me down.
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Quote:
Originally Posted by guapoman2000
Hey, I would not know .....you say this and I say that.....well, I have actually measured my Power Systems and compared it to this particular P-Calc from Diversity Models and it was pretty close within 10% which is very good. At times the propellers are not all listed and it could be that this makes a big difference along other items.

I usually insert the motor parameters in just to make sure an accurate outcome results but, motors a slightly all different and many makers of Brushless motors test at different regulated Voltages to obtain these parameters.

Lets just say that you just DO NOT like any estimation programs and leave it at that.

Many here understand that these are just estimates.
lol- You've completely misunderstood!

My goal wasn't to argue. My goal was to share information. I've no doubt P-calc may be anywhere from 100% to 75% accurate. The lower range isn't too helpful!

The example I gave was for a system that was set-up using P-calc to try to get it in the ballpark of performance I was looking for. Afterward it was actually measured and actual measurements were a long way from P-calcs estimates. The correct input was used, the props were there, etc.

My agenda was only to warn that online calculators are- at times- far from accurate and cannot be relied on. And it's not that I don't like them, I just think they have a limited role in making important choices. Do some rcg members know this? Of course! Do all? Can't say, but for me it was useful information to share.

Happy Thanksgiving!

ps- and instead of keeping this thread OT, you are more than welcome to pm me with any questions or comments, rather than carry on here. cheers
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Old Nov 21, 2007, 08:05 PM
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Yeah lets get back to the Taylor Craft anyone has looked closely into the Fuse construction, especially the frontal FUSE where the motor is to be attached?
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Old Nov 21, 2007, 09:04 PM
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I'm working on my Taylorcraft, and if I can make a sugestion to the Eflite, I would say, don't glue the hinges. My were so bad that i had to cut them off and redo on all of the surfaces. The worst was elevator, It hardly moved and joiner wasn't aligned at all. Anybody has a similar problem?
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