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Old Feb 13, 2013, 02:07 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
26,078 Posts
I built the 68" Velox that Amir (3Dwannabe) owns, and when I originally built it, I did built it with the pull/pull, however, when trying to balance the plane, it seemed quite nose heavy, so, I switched it to push/pull, but left the pull/pull control horns. After flying the plane a few times, and getting the CG where I wanted it, I found that I could go back to pull/pull. So...I just left the control horns for the push/pull, and covered the opening for the servo in the tail. I probably have the control rod for the push/pull in my hardware drawer...So, it will be very easy to switch over to pull/pull if needed....

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Old Feb 13, 2013, 08:08 PM
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USA, MI, Livonia
Joined Nov 2004
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Quote:
Originally Posted by rcbirk21 View Post
where are your packs? i kinda want to do a 4320, but i also would prefer push pull if i can manage it
Quote:
Originally Posted by hosam View Post
let me check tonight and i will let you know...
sorry about the delay but the 6s 50000 packs sits 5" forward of the wing tube for slightly nose heavy inverted flight...
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Last edited by hosam; Feb 13, 2013 at 08:21 PM.
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Old Feb 13, 2013, 08:11 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
26,078 Posts
Quote:
Originally Posted by hosam View Post
sorry about the delay but the 6s 50000 packs sits 5" forward of the wing tube for slightly nose heavy inverted flight...
With what motor?

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Old Feb 13, 2013, 08:22 PM
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USA, MI, Livonia
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Quote:
Originally Posted by SteveT. View Post
With what motor?

SteveT.
sorry Steve but my reply was for rcbirk from a few days ago... I am using a Motrolfly 4325.
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Old Feb 13, 2013, 08:24 PM
Barefoot Birkinsomething
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United States, CA, Hayward
Joined Aug 2004
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Quote:
Originally Posted by hosam View Post
sorry about the delay but the 6s 50000 packs sits 5" forward of the wing tube for slightly nose heavy inverted flight...
and you said you have the rudder servo up front?
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Old Feb 13, 2013, 08:25 PM
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USA, MI, Livonia
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yup... pull-pull
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Old Feb 13, 2013, 08:35 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
26,078 Posts
Quote:
Originally Posted by hosam View Post
sorry Steve but my reply was for rcbirk from a few days ago... I am using a Motrolfly 4325.
No problem....

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Old Feb 14, 2013, 05:00 AM
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Burke, VA
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Quote:
Originally Posted by hosam View Post
sorry about the delay but the 6s 50000 packs sits 5" forward of the wing tube for slightly nose heavy inverted flight...
Man, I bet you get some serious flight time but would be tough to balance.[one too many zero's]
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Old Feb 14, 2013, 07:12 AM
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USA, MI, Livonia
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Originally Posted by jetinteriorguy View Post
Man, I bet you get some serious flight time but would be tough to balance.[one too many zero's]
it's a very very very special one of a kind pack and I am the only one in the whole world that owns it ... it was late and I was tired but great catch...
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Old Feb 14, 2013, 08:34 AM
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United States, NE, Lincoln
Joined Mar 2011
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To those that are running a motrolfly DM4325-310 (on 8s) what prop are you running? I have a xoar 18x8 (gas prop) and it really isn’t very impressive. I was hoping for performance similar to my 58 and 59, which I run a 4315-714 on 4s and a 15x6-7 props. The LHS ordered a Xoar gas prop by accident, but will that make much difference? Really, this plane isn’t all that much better than it was on a DLE20.
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Old Feb 14, 2013, 09:20 AM
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Originally Posted by nebwake View Post
The LHS ordered a Xoar gas prop by accident, but will that make much difference?
I can only answer this part and it is NO... I have run gas props on electric motors this size as I have a few sizes from my 30cc motors...
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Old Feb 14, 2013, 12:05 PM
Barefoot Birkinsomething
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United States, CA, Hayward
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well, i hate to argue but i think it does make a different. the electric props are significantly lighter, and that will make a difference on spool up. top end performance may not be a big deal, but more weight for spool up will make a difference, but either will work and wont harm anything
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Old Feb 14, 2013, 12:16 PM
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United States, NE, Lincoln
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I know its not going to hurt anything and I have it perfectly balanced, it just doesn't have the snort I was expecting, I wonder if the 17x10e will be better? I think this plane wants some speed for the high energy stuff it loves and a little less torque up front also.
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Old Feb 14, 2013, 01:09 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
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Well...the lack of "snort", may be as Eric said, the prop is taking longer to spool up, and therefore your aren't getting the punch you are expecting, Try an 18X8 electric, and you may get what you are wanting, if you don't like it, then try the 17X10...Personally, I like the larger diameter props, due to better air wash over the surfaces....YMMV...

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Old Feb 14, 2013, 02:13 PM
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United States, NE, Lincoln
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I usually go for the largest diameter props also but I want a bit more top end speed on this guy. The 18x8gas has plenty of power and acceleration is instant, just not the top speed I want for my attempts to snap a wing tube in flight
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