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Old Feb 01, 2013, 03:40 PM
Gone Huckin'
turnerm's Avatar
Charlotte, NC
Joined Jan 2011
9,259 Posts
Quote:
Originally Posted by RCgirl383 View Post
hey guys my 57 is pretty nose heavy (im using a GForce 40C 3700mAh 4S LiPO, Motrolfly 4315 714kv with fiberglass mount, and the Castle Creations ICE 100) im using a pull-pull setup right now with the battery moved back as far as it can go, just to get the recommended CG for the maiden and not 3D. I cant get the CG back any farther, would changing the pull-pull to push-pull help?
Hmmmm.... something doesn't sound right. I had the exact same setup except I was using Gens Ace 4000's and my batteries were right in the middle of the tray. I wondery if our batteries are that different in weight?
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Old Feb 01, 2013, 04:10 PM
It'll be fineee...
RCgirl383's Avatar
Joined May 2012
907 Posts
Quote:
Originally Posted by turnerm View Post
Hmmmm.... something doesn't sound right. I had the exact same setup except I was using Gens Ace 4000's and my batteries were right in the middle of the tray. I wondery if our batteries are that different in weight?
Mine are 14.29oz according to the website
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Old Feb 01, 2013, 04:19 PM
Gone Huckin'
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Charlotte, NC
Joined Jan 2011
9,259 Posts
Quote:
Originally Posted by RCgirl383 View Post
Mine are 14.29oz according to the website
Mine are 15.2oz according to the website so the weight definitely isn't materially different.

How are you measuring your CG?
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Old Feb 01, 2013, 04:25 PM
It'll be fineee...
RCgirl383's Avatar
Joined May 2012
907 Posts
Measuring the recommended distance from the wings leading edge and putting my fingers at that point and balancing the plane..theres probably a better way to do that isn't there?
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Old Feb 01, 2013, 05:13 PM
Gone Huckin'
turnerm's Avatar
Charlotte, NC
Joined Jan 2011
9,259 Posts
Quote:
Originally Posted by RCgirl383 View Post
Measuring the recommended distance from the wings leading edge and putting my fingers at that point and balancing the plane..theres probably a better way to do that isn't there?
That's how I do it! It's just odd that yours is coming out so nose heavy though....

I'm trying to understand why that might be the case. Anyone else have this experience with this plane and the 4315-714?
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Old Feb 01, 2013, 05:34 PM
220lb of Canned Heat, baby
quadracer's Avatar
United States, IN, Derby
Joined Feb 2012
3,462 Posts
Do you have the canopy on when you test it?
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Old Feb 01, 2013, 05:36 PM
It'll be fineee...
RCgirl383's Avatar
Joined May 2012
907 Posts
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Originally Posted by quadracer View Post
Do you have the canopy on when you test it?
Yeah
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Old Feb 01, 2013, 05:45 PM
220lb of Canned Heat, baby
quadracer's Avatar
United States, IN, Derby
Joined Feb 2012
3,462 Posts
Hmmmm. Which ESC are you using, and where do you have it located?
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Old Feb 01, 2013, 06:53 PM
3DHobbyShop Addict
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United States, MN, North Mankato
Joined Feb 2011
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She's using the CC Ice 100
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Old Feb 01, 2013, 08:48 PM
Registered User
United States, WI, Milwaukee
Joined Sep 2008
770 Posts
Mine was nose heavy with a 3620 (much lighter) and 4S 4000 Gens Ace 25C. I had to add 1 1/2 oz to the tail so I could get my battery on the tray for 3D. It doesn't surprise me that with the 4315 that it would be nose heavy. I've been surprised reading here that guys running the 4315 aren't having to add tail weight.

FYI - I'm running a standard ICE 100 on the motor box (pretty far back on it)

MIke
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Old Feb 01, 2013, 09:11 PM
inverted-i-fly
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United States, CA, Petaluma
Joined Mar 2011
4,282 Posts
4315-480 ice 100 on 6s here and my 6s 2500 sit middle of the tray
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Old Feb 01, 2013, 09:44 PM
Barefoot Birkinsomething
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United States, CA, Hayward
Joined Aug 2004
9,317 Posts
Quote:
Originally Posted by Brownie433 View Post
Mine was nose heavy with a 3620 (much lighter) and 4S 4000 Gens Ace 25C. I had to add 1 1/2 oz to the tail so I could get my battery on the tray for 3D. It doesn't surprise me that with the 4315 that it would be nose heavy. I've been surprised reading here that guys running the 4315 aren't having to add tail weight.

FYI - I'm running a standard ICE 100 on the motor box (pretty far back on it)

MIke
pull pull or push pull? makes a big difference
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Old Feb 01, 2013, 09:47 PM
220lb of Canned Heat, baby
quadracer's Avatar
United States, IN, Derby
Joined Feb 2012
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Mine is pull-pull with the 4315, balances nicely.
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Old Feb 01, 2013, 10:19 PM
Registered User
United Kingdom, London
Joined Jul 2011
2,243 Posts
mine with a reccomended hacker came out waay too tail heavy for my liking... my batteries was as far forward as i could get them...

are you measuring by wingtips or wing root?
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Old Feb 01, 2013, 10:19 PM
I fly, therefore, I crash!!!
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San Jose, CA
Joined Jan 2008
26,097 Posts
I have a Reaper GR-60 in my 57" Extra, with pull/pull, and it balances nicely with 4S 45C 4000mAH packs.

SteveT.
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