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Old Oct 12, 2012, 09:26 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
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I was under 10 pounds with an 8s setup so no issues with weight.lf l remember right safetyhawk was under 9.5 pounds with his 8s setup. Now for me l have yet to fly a 70+" plane on 6s and felt it had enough power for my liking. 300kv with a 19x8 prop on 8s is awesome. My 5320 stays cool no matter how hard l fly and is putting out 3k watts peak. Plus having the batteries being able to share with the smaller 57+" planes is a big help.
I would say the 4330 or the 5320 with a 300 to 320kv with a 19" prop is what you will want for all out performance with a worry free motor no matter how hard you fly or how hot it is out side. Oh you need at least an ice 100 esc with a bec pro for the servos
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Old Oct 12, 2012, 09:40 PM
doh!
ryan_m's Avatar
United States, AR, Little Rock
Joined May 2006
4,146 Posts
Quote:
Originally Posted by zmonster97 View Post
Can you take a picture of it when you get it? Thanks.
yep. Will take some pics, weigh it, and post up a comparison to the 4325 once I have a few flights on it.
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Old Oct 12, 2012, 09:47 PM
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Australia, QLD, Brisbane
Joined Mar 2011
328 Posts
Looks like I might have done my money on the Hacker A50-12L as it gets quit hot and humid here in summer . I was thinking about going 6S as it would be easier to use just one battery. I do have some 4S 4000mah batteries I am using in the 57SC Extra (and maybe 58 Edge if i ever get it built) that I could double up on and save some money on batteries. Guess I will have to go back an rethink things again. Will be interested in what people think of the new 4330 in this plane.

I have started getting electronics together and will hopefully be able to pick up the 71" Slick in the new year when they next come in. Also have the Ice 100 and Bec Pro already.

Would the 7955TG's be overkill on this plane and would you need a separate power source to the receiver or would the 6S or 8S flight battery be enough? What are people typically running servo-wise on this plane? This would be my first plane this size so not too sure on powering the servos.
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Old Oct 12, 2012, 09:57 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
16,405 Posts
The 7955s are great in this plane. I have my bec pro off my 8s setup with no issues. That's with over 1000 flights on it too. So no worries there.
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Old Oct 12, 2012, 10:03 PM
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edf_rookie's Avatar
Australia, QLD, Brisbane
Joined Mar 2011
328 Posts
Quote:
Originally Posted by losifanatic View Post
The 7955s are great in this plane. I have my bec pro off my 8s setup with no issues. That's with over 1000 flights on it too. So no worries there.
Thanks Losi,

That settles it for me then I know you fly a lot better and harder than I ever will and if they are good enough for you then they will be more than enough for me

7955s and 8S is will end up being
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Old Oct 12, 2012, 10:17 PM
Gone Huckin'
turnerm's Avatar
Charlotte, NC
Joined Jan 2011
9,259 Posts
I'll apologize up front as I'm a finance guy by trade so typically anything motor or electronic related usually trips me up. I'm slowly learning though.

I understand how KV and and cell count and prop size all work together. But what's the difference between the Motrofly 4325 and 5320. Assuming they both have the same KV rating why would you chose one over the other?

Also... I suck at soldering so I avoid it like the plague. That's the main reason I use APP's. So if I want to use those with a BEC setup what's the best way? Would I just crimp the BEC and ESC wires together into the same APP connector??
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Old Oct 12, 2012, 10:19 PM
doh!
ryan_m's Avatar
United States, AR, Little Rock
Joined May 2006
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5320 is 53mm diameter, the 4325 is 43mm diameter. The 5320 is a larger motor capable of handling more power than the 4325. That's really about it.
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Old Oct 12, 2012, 10:23 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
16,405 Posts
The 5320 being bigger is more efficient at the 2400+watt range. I gained flight time and power going to the 5320. I also don't have to worry about motor heat. I was heating up the 4325.
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Old Oct 12, 2012, 10:28 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
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Also have the velox with a 4325 310kv set up on 8s with a 19x8 prop. The slick is setup with the 5320 300kv motor on 8s with a 19x8 prop. The velox is lighter but the slick will out pull the velox and the slick pulls slightly less wattage. Love the efficiency. It does come at a price and not only $$$ it weighs 4 ounces more. The slick handles that 4 ounces just fine though.
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Old Oct 12, 2012, 10:29 PM
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turnerm's Avatar
Charlotte, NC
Joined Jan 2011
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Quote:
Originally Posted by ryan_m View Post
5320 is 53mm diameter, the 4325 is 43mm diameter. The 5320 is a larger motor capable of handling more power than the 4325. That's really about it.
Power measured how exactly? Watts or Amps or what? Does this just mean that a larger motor can handle a larger prop assuming the same battery setup (cell count) and assuming the same or similar KV rating?? So a 5320-300 could swing a 20 inch prop on 8s while a 4325-300 could only swing a 19 inch prop? Just using made up figures to make sure I understand...
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Old Oct 12, 2012, 10:31 PM
Gone Huckin'
turnerm's Avatar
Charlotte, NC
Joined Jan 2011
9,259 Posts
Quote:
Originally Posted by losifanatic View Post
Also have the velox with a 4325 310kv set up on 8s with a 19x8 prop. The slick is setup with the 5320 300kv motor on 8s with a 19x8 prop. The velox is lighter but the slick will out pull the velox and the slick pulls slightly less wattage. Love the efficiency. It does come at a price and not only $$$ it weighs 4 ounces more. The slick handles that 4 ounces just fine though.
I've seen the performance of your slick first hand and it's impressive to say the least. I think I'm gonna replicate what you've got but I want to make sure I understand the concept too.
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Old Oct 12, 2012, 10:47 PM
Sippin the Koolaid!
losifanatic's Avatar
United States, NC, Hertford
Joined Oct 2007
16,405 Posts
Watts and amps mean nothing without rpm data. With rpm data you can tell what motor is putting the most of its power to the prop instead of wasting it in heat. Efficiency is a big factor.
My hacker a50-12l pulled more watts than my 4325 with the same 18x8 prop but my 4325 put more power to the prop. So it was stronger and because it was more efficient it didn't get as hot as the hacker.
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Old Oct 12, 2012, 11:17 PM
3DHS 'native'
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USA, TX, Spring
Joined Jan 2008
5,925 Posts
Ordered an ezbalancer lite after my disastrous maiden flight and tail heavy mess.

With the tank empty and the cg set at 155mm from leading edge the plane is still nose heavy. I dont get how its tail heavy, tucking to gear and bobbing on landing, but the cg shows to be nose heavy
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Old Oct 13, 2012, 12:17 AM
House of Paine
weaser42's Avatar
United States, AZ, Gilbert
Joined May 2007
2,168 Posts
Quote:
Originally Posted by turnerm View Post
Are you talking about something like this??Attachment 5225977
Yep, here is a new pack I setup tonight in fact
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Old Oct 13, 2012, 10:44 AM
3DHS 'native'
going4speed's Avatar
USA, TX, Spring
Joined Jan 2008
5,925 Posts
My fav 71" slick video

3DHS 71" AJ Slick - Shakedown Flight (6 min 30 sec)
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