Search: Posts Made By: AEAJR
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Forum: Power Systems
07-31-2017, 08:39 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Good points, especially about the different...

Good points, especially about the different LiPos. I only use the "common" type.
Forum: Power Systems
07-29-2017, 08:59 PM
Replies: 324
Views: 131,385
Posted By AEAJR

It has been some time since we updated this...

It has been some time since we updated this tread.

Components change, products change and the prices change. But I believe the principals that were the start of this discussion still apply.
...
Forum: Power Systems
06-06-2012, 06:32 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool 70 sould be plenty of headroom. Be sure to check...

70 sould be plenty of headroom. Be sure to check all your battery/prop combinations to be surre you don't get too close to the 60 amp rating of the motor.
Forum: Power Systems
05-29-2012, 03:49 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Probalby worth posting this link again. ...

Probalby worth posting this link again.

EVERYTHING YOU WANTED TO KNOW ABOUT ELECTRIC POWERED FLIGHT
A Free e-book on Wattflyer
http://www.wattflyer.com/forums/showthread.php?t=31368
Forum: Power Systems
06-07-2011, 12:10 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool There must be over 100 threads on this topic. Try...

There must be over 100 threads on this topic. Try some searches using a mix of words like:

Glow to electric
gas to electric
wet to electric
electric conversion

Similar terms. Don't...
Forum: Power Systems
09-20-2010, 11:59 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool C has nothing to do with capacity or duration. C...

C has nothing to do with capacity or duration. C tells us what the maximum amp draw the battery pack can handle without serious damage.

You would either need a larger battery pack, measured in...
Forum: Power Systems
09-17-2010, 05:50 PM
Replies: 324
Views: 131,385
Posted By AEAJR

I presume you have read this thread, or at least...

I presume you have read this thread, or at least some of it and understand the basics.

The key piece of information we need is how many amps will be draw.

300W and 11V battery would imply...
Forum: Power Systems
03-07-2010, 06:51 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Let's see, they say a 600W motor, a 900W motor...

Let's see, they say a 600W motor, a 900W motor and a 1580 watt motor are all roughly equivalent to a .40 to .61 motor.

If that doesn't tell you that this is about the most unreliable approach...
Forum: Power Systems
03-07-2010, 03:58 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Gents, I don't understand this 100 W/Oz...

Gents,

I don't understand this 100 W/Oz discussion. Are you talking about some way to do estimations of motor weight so you can balance the plane? Or are you doing some kind of motor efficency...
Forum: Power Systems
10-31-2009, 11:50 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Much of what you say is true. But there are lots...

Much of what you say is true. But there are lots of tools to help. If you read the first post in this thread you know that. Put in the basics about your plane and there are tools that will tell you...
Forum: Power Systems
10-05-2009, 07:59 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Any time you ask for an evaluation of an item,...

Any time you ask for an evaluation of an item, please provide a link to each of the components you list so we can see the information you left out. Please don't make us run web searches to find the...
Forum: Power Systems
09-25-2009, 03:56 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool WebOCalc ...

WebOCalc
http://flbeagle.rchomepage.com/software/webocalc_1.05/html/webocalc_imperial.html

Rather than you posteing lots of combinations and asking our opinion. Why don't you tell us why you...
Forum: Power Systems
09-22-2009, 10:42 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Bullet connectors between the ESC and the...

Bullet connectors between the ESC and the brushless motor are pretty standard. There is no reason to change these and changing them might even cause problems. Leave this side alone if possible.
...
Forum: Power Systems
09-21-2009, 01:30 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool PA, I have not used or seen that WM, but...

PA,

I have not used or seen that WM, but most of the revews are good. There seems to be some concern about the quality of the soldering but it seems to work for most of the posters.

As Ron...
Forum: Power Systems
09-19-2009, 04:34 AM
Replies: 324
Views: 131,385
Posted By AEAJR

If the motor mfg provides good documentation,...

If the motor mfg provides good documentation, then you can go with that.

For example Maxx Pro provides wonderful documentation with their motors.
http://www.maxxprod.com/pdf/HC3510-1540.pdf
...
Forum: Power Systems
09-19-2009, 03:02 AM
Replies: 324
Views: 131,385
Posted By AEAJR

The propeller places the load on the motor. The...

The propeller places the load on the motor. The wider or the deeper the prop the greater the load on the motor. By matching the propeller to the motor and the load you want to place on the motor you...
Forum: Power Systems
09-18-2009, 02:45 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Your math is right but your approach is wrong. ...

Your math is right but your approach is wrong.

If you want to know how many watts your current system is producing you have to measure it. A watt meter is good for that.

OR

You can...
Forum: Power Systems
09-18-2009, 02:30 PM
Replies: 324
Views: 131,385
Posted By AEAJR

reubin, Glad you found it helpful.

reubin,

Glad you found it helpful.
Forum: Power Systems
09-17-2009, 02:16 PM
Replies: 324
Views: 131,385
Posted By AEAJR

PaperA, What typically happens is you try...

PaperA,

What typically happens is you try to work these things through in your head and it can be a bit confusing if you have no experience working with electricty. Then, one day, it clicks.
...
Forum: Power Systems
09-15-2009, 08:42 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Actually the risk is minimal. The dreaded...

Actually the risk is minimal.

The dreaded number for lipos is actually 2.5 Volts RESTING voltage. Your ESC cuts off between 2.75 and 3V UNDER LOAD.

Once you remove the load, the voltage...
Forum: Power Systems
09-15-2009, 08:35 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool I would suggest you go back and read the article...

I would suggest you go back and read the article that is in the first post. This is all explained in great detail with lots of examples.
Forum: Power Systems
09-12-2009, 06:46 PM
Replies: 324
Views: 131,385
Posted By AEAJR

That motor should have Plenty of power for that...

That motor should have Plenty of power for that plane. will probably climb straight up on a 3 cell and an 8X4.

Enjoy!
Forum: Power Systems
09-12-2009, 04:22 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool No problem about the first post not allowing...

No problem about the first post not allowing links. But in the future, we always need the links otherwise you require us to hunt around to find all the items you ask about. And when asking about...
Forum: Power Systems
08-19-2009, 10:52 PM
Replies: 324
Views: 131,385
Posted By AEAJR

That would suggest to me that this motor is not...

That would suggest to me that this motor is not intended to be run on a 3 cell pack.

Will know more when you post link to the motor info.
Forum: Power Systems
08-19-2009, 05:43 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Whenever asking about a specific motor or ESC you...

Whenever asking about a specific motor or ESC you really need to provide all the specs for the motor or better would be a link to the information.

Without the MFG specs we are only guessing as to...
Forum: Power Systems
03-01-2009, 11:38 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Your logic and reasoning is very well stated. I...

Your logic and reasoning is very well stated. I like your selections. The only suggestions I have are that you get several props, they are cheap, and try them.

The capacity of the battery has no...
Forum: Power Systems
02-11-2009, 12:42 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool Crash Serum, Being a glider pilot myself, I...

Crash Serum,

Being a glider pilot myself, I was wondering how your BOT came out? What did you finally use and how did it work?
Forum: Power Systems
12-28-2008, 01:20 PM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool I can tell you nothing about the motor because...

I can tell you nothing about the motor because you have not provide a link to the specs. See several posts up where this is discussed. If you have questions about a motor, post a link to the specs....
Forum: Power Systems
08-18-2008, 12:44 PM
Replies: 324
Views: 131,385
Posted By AEAJR

How many cells in your lipos? 3? Use about...

How many cells in your lipos? 3? Use about 3.3V/lipo Cell as your working voltage. =9.9V for a 3 cell pack. 10V is fine for estimating purposes.

How many amps? That will depend on the prop....
Forum: Power Systems
08-18-2008, 01:21 AM
Replies: 324
Views: 131,385
Posted By AEAJR

Cool That is up to you. I would take the total...

That is up to you.

I would take the total power of both motors as my total watts and compare that to the weight of the plane.

So,

Let's say you have a 6 pound plane with two motors. At...
Showing results 1 to 30 of 45
 


 
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