3DHS 58" Edge 540 - V2 - thread has extra posts!!! - ON SALE!! - extremeflightrc.com - Page 27 - RC Groups
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Feb 17, 2012, 12:00 PM
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diggity2424's Avatar
Quote:
Originally Posted by zmonster97
Cool. So I would probably only need to add like .5 oz of weight. For the 4315, are you guys using the normal x mount or are you using the lightweight x mount. I'm guessing the normal one for the nose weight.
Yes , but depending on your battery type. If your running 3s 2200s in series like me, I would get as close to the 2.5oz if you were to use 3.75inch on the CG. Going with a heavy battery of course would mean less weight added.
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Feb 17, 2012, 01:03 PM
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zmonster97's Avatar
Ok thanks guys. Snowdog, please report back on how the cg is with the light x mount.
Feb 17, 2012, 01:03 PM
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SnowDog1974's Avatar
Quote:
Originally Posted by zmonster97
Ok thanks guys. Snowdog, please report back on how the cg is with the light x mount.
you bet I will...hopefully this weekend!
Feb 17, 2012, 01:04 PM
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But then again your going to use 2800 batteries.
Feb 17, 2012, 01:08 PM
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SnowDog1974's Avatar
Quote:
Originally Posted by zmonster97
But then again your going to use 2800 batteries.
I've got some 3s2200's as well; I can check it with both sizes.
The difference in weight for the 2800's over the 2200's is 1.4oz.
Should be able to handle that by moving the pack 1/2 inch either way.
Feb 17, 2012, 02:50 PM
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Cool. Thanks. And can somebody tell me how many amps they're pulling on the 4315-480 on a 15x7 prop. I'm trying to see if my batteries will be good enough.
Feb 17, 2012, 03:09 PM
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lammbn's Avatar
one thing to remember is that the 4315 is shorter so its weight is more concentrated on a greater arm from the center of gravity so it will have a greater moment than the 3620 at the same distance from the firewall. all of these motors have different dimensions so weight isnt the only factor, over what distance is that weight distributed makes a decent difference too.
Feb 17, 2012, 03:11 PM
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lammbn's Avatar
Quote:
Originally Posted by zmonster97
Cool. Thanks. And can somebody tell me how many amps they're pulling on the 4315-480 on a 15x7 prop. I'm trying to see if my batteries will be good enough.
shoot for 50 to 55 amps and you should be good. i have heard that a 15x8 is about right for that motor. the 15x8 is actually the best prop for the 3620-480 too. but for some reason all my props 14x7 and up pull the same amperage from the motor. so i went with the one that performed the best. which was the 15x8 for me.
Feb 17, 2012, 03:15 PM
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Quote:
Originally Posted by lammbn
shoot for 50 to 55 amps and you should be good. i have heard that a 15x8 is about right for that motor. the 15x8 is actually the best prop for the 3620-480 too. but for some reason all my props 14x7 and up pull the same amperage from the motor. so i went with the one that performed the best. which was the 15x8 for me.
Ok thanks. So then 15x8 it will be. Also is a xoar or apc prop better?
Feb 17, 2012, 03:23 PM
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i have not ran an xoar on this setup yet. my experience with them is that they pull a few less amps then their apc equivalent. i really would like to buy some more xoars to put on my planes because i have broken both the ones i had before on my 71. one in a decent crash and the other hitting a bump while taxiing. but the apc's get the job done and i have lots of other little things taking up the funds that seem more "necessary" than pretty props. i wish Mejzlik made a carbon fiber 19x10WE prop. i might be willing to spend the money then..
Feb 17, 2012, 06:43 PM
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Quote:
Originally Posted by lammbn
i have not ran an xoar on this setup yet. my experience with them is that they pull a few less amps then their apc equivalent. i really would like to buy some more xoars to put on my planes because i have broken both the ones i had before on my 71. one in a decent crash and the other hitting a bump while taxiing. but the apc's get the job done and i have lots of other little things taking up the funds that seem more "necessary" than pretty props. i wish Mejzlik made a carbon fiber 19x10WE prop. i might be willing to spend the money then..
I've got two APC 15x7E props right now...Subsonic planes lists 15x7 and 15x8 as appropriate props for this plane. If I don't like the way the 15x7 feels, I'll get a 15x8. I agree with you - I'd like to use a Xoar wood prop, but maybe I'll wait a bit...I've already put quite a bit into this airframe already.
Feb 17, 2012, 07:10 PM
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APC's are ok in this size plane (though they do tend to draw a few more amps than Xoars)....it's not until you get to the bigger planes that they get kind of inefficient as they start flexing...

SteveT
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Feb 17, 2012, 07:18 PM
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I'd probably go with a xoar. So pretty much everybody is using a 15x8?
Feb 17, 2012, 08:20 PM
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Motrolfly!


This motor is sweet! Very beefy, I rather have the extra weight in the power system
Last edited by keithy4129; Mar 31, 2012 at 05:49 PM.
Feb 17, 2012, 08:33 PM
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Quote:
Originally Posted by keithy4129
This motor is sweet! Very beefy, I rather have the extra weight in the power system
Thats a nice looking motor! It's very wide.


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