Search: Posts Made By: AEAJR
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Forum: Beginners
02-01-2011, 03:19 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool No I don't, but the content that I added here is...

No I don't, but the content that I added here is in the e-book, for the most part.
Forum: Beginners
09-13-2010, 12:10 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool There are all kinds of such charts. None of them...

There are all kinds of such charts. None of them agree because this is the wrong approach to take to size an electric motor. If you read the thread you know that the proper way to size an electric...
Forum: Beginners
02-16-2010, 11:30 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool Tell us why you selected this set-up and we can...

Tell us why you selected this set-up and we can better tell you if it will meet objectives.

With no link to the planes information, no link to the motor's information, and no stated performance...
Forum: Beginners
01-25-2010, 08:34 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Assuming you have a reasonable prop on the...

Assuming you have a reasonable prop on the motors, each speed 400 should draw between 10 and 13 amps, so a 30 amp ESC should work.

It would be best to put a wattmeter on the set-up to confirm,...
Forum: Beginners
04-12-2009, 02:49 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Steve, Good info. I often wondered if there...

Steve,

Good info. I often wondered if there was a difference. What you posted makes a LOT of sense.
Forum: Beginners
01-20-2009, 11:57 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool If you use the recommended voltage and the...

If you use the recommended voltage and the recommended propeller size then you can assume that your motor is drawing at the rate reported by the manufacturer. Good motors come with charts that...
Forum: Beginners
01-20-2009, 11:49 PM
Replies: 93
Views: 151,970
Posted By AEAJR

DANGER! DANGER! DANGER! A swelling lipo...

DANGER! DANGER! DANGER!

A swelling lipo is a very bad thing and can be dangerous. Get it out of your care or your house and put it in a fire proof area or container.

A swelling lipo...
Forum: Beginners
01-20-2009, 03:47 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Batteries2~3 cell Li-PolyRPM/V4800 rmp/V4500...

Batteries2~3 cell Li-PolyRPM/V4800 rmp/V4500 rmp/V4300 rmp/VMax. efficiency80%82%82%No load current2.2 A2.0 A1.7ACurrent capacity35 A/60 s25 A/60 s22 A/60 sDimension20x40 mmShaft diameter2.3 mmWeight...
Forum: Beginners
01-19-2009, 09:27 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool Minimum ESC is based on the Amp draw of the...

Minimum ESC is based on the Amp draw of the motor. The amp draw of your motor will be determined by the size prop or ducted fan you use and what voltage battery you use.

I don't know what motor...
Forum: Beginners
01-19-2009, 09:03 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool Having a higher capacity ESC is fine. As long as...

Having a higher capacity ESC is fine. As long as it meets the minimum, it does not matter if it can handle more. Like one person in a 5 passenger car, the car runs just fine.

Same with the...
Forum: Beginners
12-26-2008, 07:05 PM
Replies: 93
Views: 151,970
Posted By AEAJR

As a follow-on to the post above, I thought I...

As a follow-on to the post above, I thought I would share some flight testing I have done and my experience with several e-gliders. Read it all, but the Sky Runner mentined below would be the...
Forum: Beginners
12-26-2008, 06:31 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool You asked for expert advice. My first advice was...

You asked for expert advice. My first advice was to post the specs and links to the components about which you are asking. Without that, there is not basis to advise you on anything else.

You...
Forum: Beginners
12-13-2008, 11:38 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Hobby City has some great deals on motors and...

Hobby City has some great deals on motors and ESC. I just purchased a set-up from them. Unfortunately the motor was defective.

They immediately issued a return authorization, but to send the...
Forum: Beginners
06-15-2008, 04:37 PM
Replies: 93
Views: 151,970
Posted By AEAJR

I have never adjusted the timing on an ESC so...

I have never adjusted the timing on an ESC so someone else will have to answer this one. They come preset and that is how I use them.
Forum: Beginners
04-25-2008, 03:49 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Glad you find the discusison helpful. The...

Glad you find the discusison helpful. The answer to your question is typically yes. For a give amount of available power, measured in watts, if you increase the pitch, you will have to decrease...
Forum: Beginners
01-25-2008, 02:01 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Cool 1-2-3 are a lithium based chemistry battery. ...

1-2-3 are a lithium based chemistry battery. They are different than lipos and require different chargers.

I have only seen them in the C or SubC size range. Very high discharge and high...
Forum: Beginners
01-25-2008, 01:50 PM
Replies: 93
Views: 151,970
Posted By AEAJR

I get questions about gearboxes from time to...

I get questions about gearboxes from time to time. They are covered above, but if you are still a little unclear on when and why a gearbox is used, this may help.

We are going to discuss why we...
Forum: Beginners
01-13-2008, 06:55 AM
Replies: 93
Views: 151,970
Posted By AEAJR

The plane weighs a little over 2 pounds. If you...

The plane weighs a little over 2 pounds. If you read the article you know we can target several levels of performance.

So we want at least 120 watts and I would target 150 watts.

To draw...
Forum: Beginners
01-08-2008, 11:04 PM
Replies: 93
Views: 151,970
Posted By AEAJR

you could probably cut the fuse a little and get...

you could probably cut the fuse a little and get a 6 on there safely.
Forum: Beginners
01-08-2008, 01:04 PM
Replies: 93
Views: 151,970
Posted By AEAJR

That is the general idea. Whether that...

That is the general idea. Whether that particular combination is the right one is hard to say, but the concept is right.

Of course on a pusher, you have the issue of clearence. Can you actually...
Forum: Beginners
01-07-2008, 07:38 PM
Replies: 93
Views: 151,970
Posted By AEAJR

Watts per pound is very subjective. What is...

Watts per pound is very subjective.

What is aerobatics and what is competitoin and what is casual flying. They are very loose terms. Just targets.

If you are a power or speed freak, lean to...
Forum: Beginners
10-04-2007, 02:31 PM
Replies: 93
Views: 151,970
Posted By AEAJR

If you are having problems with the electricty...

If you are having problems with the electricty part of the discussions above, this article may be helpful:

Amps vs Volts vs. C...
Forum: Beginners
09-09-2007, 04:08 AM
Replies: 93
Views: 151,970
Posted By AEAJR

Nice job Chris F. Here is another cut at it...

Nice job Chris F.

Here is another cut at it that takes a slighty different slant but arrives at about the same conclusions. Note that you do not have to know this stuff in order to fly electric....
Showing results 1 to 23 of 23


 
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