Search: Posts Made By: mred
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Forum: Power Systems
06-01-2012, 02:02 AM
Replies: 324
Views: 131,703
Posted By mred

Great choice on the ESC, but I will never buy an...

Great choice on the ESC, but I will never buy an eflight motor again, but that is personal with me. Nothing to do with the quality of the motor. There are a lot of good batteries out there and I...
Forum: Power Systems
05-31-2012, 03:15 AM
Replies: 324
Views: 131,703
Posted By mred

http://www.hobbyking.com/hobbyking/store/__471__15...

http://www.hobbyking.com/hobbyking/store/__471__157__Tools-Watt_Meter.html

You can go here and check out the watt meters. The go up to about $50.00 and depending on how fast you want one you can...
Forum: Power Systems
05-30-2012, 06:11 AM
Replies: 324
Views: 131,703
Posted By mred

Electric motors are normally rated for a range of...

Electric motors are normally rated for a range of current. Say it is 60A top. The rating will normally read something like 50 to 60 amps constant. 70A peak. When you put a smaller prop on it, then...
Forum: Power Systems
05-29-2012, 09:02 PM
Replies: 324
Views: 131,703
Posted By mred

If you are after speed, then I would go for a...

If you are after speed, then I would go for a Scorpion which is a higher KV motor. That would spin a prop faster and using the right prop I think you would get more speed. It will suffer in the climb...
Forum: Power Systems
05-29-2012, 05:36 AM
Replies: 324
Views: 131,703
Posted By mred

Well now, that is going to depend on what kind of...

Well now, that is going to depend on what kind of flying and what price range you are looking at. A Scorpion motor is great and has sort of a high KV rating and can spin a smaller prop faster then...
Forum: Power Systems
02-20-2012, 03:31 AM
Replies: 324
Views: 131,703
Posted By mred

Well, to tell you the truth, I haven't used them...

Well, to tell you the truth, I haven't used them enough to know how long they will last. I just bought the NanoTech batteries and have about 15 flights on them now and they are working fine. Can't...
Forum: Power Systems
02-19-2012, 05:22 PM
Replies: 324
Views: 131,703
Posted By mred

I hate to say this, because I will probably get...

I hate to say this, because I will probably get flamed again, but NanoTech are not the best batteries in the world. Granted they are the best of the Turnigy line and I use them, but if you are going...
Forum: Power Systems
02-19-2012, 04:00 PM
Replies: 324
Views: 131,703
Posted By mred

I don't know why you are using the C rating of...

I don't know why you are using the C rating of the battery to figure flight time. That has nothing to do with flight time, but how the battery reacts under load. The higher the C rating is the...
Forum: Power Systems
02-19-2012, 02:05 AM
Replies: 324
Views: 131,703
Posted By mred

Well, I have 2 5000MAh 5S batteries (5S2P) and...

Well, I have 2 5000MAh 5S batteries (5S2P) and each is 45C to 90C. They are the new nano Tech batteries from Hobby King and they cost $74.73 ea. They change at 10C and I can be back in the air...
Forum: Power Systems
02-18-2012, 05:57 PM
Replies: 324
Views: 131,703
Posted By mred

The biggest problem I have with 123 cells is the...

The biggest problem I have with 123 cells is the weight. Not many of my planes will carry them and the one that does, I use LiPo's anyway. I did have one 123 battery, but sold it to one of the guys...
Forum: Power Systems
05-15-2011, 10:44 PM
Replies: 324
Views: 131,703
Posted By mred

I don't really have anything against 123 cells...

I don't really have anything against 123 cells except for the weight. I have been using LiPo cells since I started flying electric and have yet to have one burn my house down. As long as you take...
Forum: Power Systems
03-05-2010, 10:59 PM
Replies: 324
Views: 131,703
Posted By mred

http://hobbycity.com/hobbycity/store/uh_viewItem.a...

http://hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2106&Product_Name=KD_A22-20L_Brushless_Outrunner_Motor

Here is a good motor for 2M gliders. It will put out 200W on a 10X6 folding...
Forum: Power Systems
03-05-2010, 04:20 AM
Replies: 324
Views: 131,703
Posted By mred

If you want a 6S 4400MAh battery you will need 4...

If you want a 6S 4400MAh battery you will need 4 battery packs. Put two together in parallel to form a 3S 4400MAh and you will need two of them like that, thus 4 packs. Then take the 3S 4400MAh packs...
Forum: Power Systems
11-23-2009, 12:27 AM
Replies: 324
Views: 131,703
Posted By mred

http://hobbycity.com/hobbycity/store/uh_viewItem.a...

http://hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2105&Product_Name=KD_A22-15M_Brushless_Outrunner_Motor

I would think this is more then enough power for your plane. I have used this...
Forum: Power Systems
10-31-2009, 02:28 AM
Replies: 324
Views: 131,703
Posted By mred

Well, I've built glow powered planes that require...

Well, I've built glow powered planes that require some work to get the engine to fit right and it's not all that different with electric motors. Sure they build them to mount their motors, but that...
Forum: Power Systems
10-05-2009, 01:41 AM
Replies: 324
Views: 131,703
Posted By mred

I don't see why not. That motor is about a...

I don't see why not. That motor is about a 650Watt motor and is close to a .40 size glow. Running something like an 11X8 APC on a 4 cell battery you should pull somewhere around 650 watts on this....
Forum: Power Systems
09-15-2009, 11:22 PM
Replies: 324
Views: 131,703
Posted By mred

Almost but not quite. The most you can draw from...

Almost but not quite. The most you can draw from a 1000mah battery is 1000ma. The rate you are pulling current from the battery is 2000ma, so you can run the motor for 1/2 hour, but it will still...
Forum: Power Systems
09-15-2009, 07:56 PM
Replies: 324
Views: 131,703
Posted By mred

That is true, but the better ESC's have an...

That is true, but the better ESC's have an adjustable cutoff voltage feature and it can be set to kick out at 3.2 or 3.4 volts per cell. I know of one that will not cut out until 2.8 volts and you...
Forum: Power Systems
09-15-2009, 04:52 PM
Replies: 324
Views: 131,703
Posted By mred

I have a great sense of adventure, but I also...

I have a great sense of adventure, but I also don't like landing my plane in a field of corn that is 7' high and then trying to find it. Or how about the other end of our field that is full of trees....
Forum: Power Systems
09-15-2009, 02:42 AM
Replies: 324
Views: 131,703
Posted By mred

ma is nothing more then a way to write a number....

ma is nothing more then a way to write a number. Normally a number such as .01a is written as 10ma. It's just a different way to write it. MAh is how many amps the battery will put out for 1 hour. If...
Forum: Power Systems
09-15-2009, 02:10 AM
Replies: 324
Views: 131,703
Posted By mred

You can use a smaller battery if you want to as...

You can use a smaller battery if you want to as long as it is able to put out the amps that the motor requires. The problem comes in with flying time. The smaller the battery the less flying time you...
Forum: Power Systems
09-15-2009, 01:57 AM
Replies: 324
Views: 131,703
Posted By mred

Your right. 2200ma is 2.2 amps. Current rated in...

Your right. 2200ma is 2.2 amps. Current rated in small amounts such as .1 amp is normally written as 100ma. It is nothing more then another way to write it, so ma is the number to the right of the...
Forum: Power Systems
09-14-2009, 10:22 PM
Replies: 324
Views: 131,703
Posted By mred

Make sure you are signed in when you buy...

Make sure you are signed in when you buy something. You have to sign in every time you go to their site. Also, if this is your first order, you may not get much of a discount, but after you order a...
Forum: Power Systems
09-13-2009, 11:59 PM
Replies: 324
Views: 131,703
Posted By mred

The 40C is the amount that the battery is able to...

The 40C is the amount that the battery is able to put out without burning it up. In this case it's 74 amps. You multiply 40 times 1.85A in this case and that gives you the amps you can pull at max...
Forum: Power Systems
09-13-2009, 07:02 PM
Replies: 324
Views: 131,703
Posted By mred

That looks just like the motors that Nitro Planes...

That looks just like the motors that Nitro Planes sells and from what I hear, they are pretty good motors, but I have never had one or seen one in use. I have just read about them and they sound...
Forum: Power Systems
09-13-2009, 03:16 AM
Replies: 324
Views: 131,703
Posted By mred

You can try E-Bay. Once in awhile you can find a...

You can try E-Bay. Once in awhile you can find a good deal on a good motor. Tower also has theirs on sale once in awhile, but if you want top brand motors, you are going to pay for them at just about...
Forum: Power Systems
09-12-2009, 11:21 PM
Replies: 324
Views: 131,703
Posted By mred

The only thing that will do is add a little more...

The only thing that will do is add a little more weight to the plane and will allow you to fly longer. If you can handle the extra weight, then no problem - you just get longer flights.

Ed
Forum: Power Systems
08-19-2009, 09:50 PM
Replies: 324
Views: 131,703
Posted By mred

This is only a guess so far, because you didn't...

This is only a guess so far, because you didn't give all the information, but a 3,000KV motor is meant more for a Chopper then a war bird. I would say going to something with a 900KV to about a...
Forum: Power Systems
02-18-2009, 02:00 AM
Replies: 324
Views: 131,703
Posted By mred

I am using a KD A20 22L motor in mine running a...

I am using a KD A20 22L motor in mine running a 10X6 around 200W and I love it. You can power down if you like, 175 watts will still give you a good flying glider and it will still climb pretty good...
Forum: Power Systems
02-17-2009, 03:05 PM
Replies: 324
Views: 131,703
Posted By mred

They are more efficient, but it depends on the...

They are more efficient, but it depends on the size of the prop that you want to turn that is giving you the amps. A 200W motor can turn a 10X6 at 20A or there abouts depending on the motor you are...
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