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Old Nov 28, 2012, 06:20 PM
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Jetnfast's Avatar
United States, MO, Warrensburg
Joined Feb 2008
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Quote:
Originally Posted by bmiller View Post
You have to remove the battery tray then 8S 5000s will fit. You'll need to add lead weight in the tail to get the cg right also.
I flew mine on 7S 5000s and 7S 4000s. It flew and landed much better with the lighter 4000s. 8S 5000s will be fast but landing speed will also be very fast....maybe too fast.
A hi power 6S setup is IMO the best setup for this jet.
Good to know regarding the 5000 or the 4000mah 7s pack. Like you, I was thinking the 4000mah is a good trade off, plus its probably not bad to cut the run time by about 1 min especially if your running a maxed out stock setup.

Which 7s pack did you go with?
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Old Nov 29, 2012, 03:31 PM
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bmiller's Avatar
Newport Beach, CA
Joined May 2002
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Zippy 45C 5000s and GenAce 60-120C 4000s.
With the GAs 4 minutes max flyingtime. One fast 4 minute flight didn't have enough juice left to taxi back to the pits so don't forget to set the timer!
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Old Nov 30, 2012, 01:51 PM
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United States, MO, Warrensburg
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Sounds good. I am looking at that particular Gens Ace 7s pack. I have been happy with the other 65-120C packs from them, all with very low resistance.
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Old Nov 30, 2012, 05:42 PM
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bmiller's Avatar
Newport Beach, CA
Joined May 2002
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Good batteries for a good price.
I use 3S and 4S packs in series for 7S.
A single 7S pack limits my options for use in other airframes.:-)
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Old Dec 04, 2012, 01:24 AM
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Sydney Australia
Joined Aug 2009
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My 25-50c 6s, 5000Mah nanos have just started to swell just slightly and I have noticed a slight drop in watts as well so it is time for replacement. What c rating are you all using. I am thinking of new lipos with a higher c rating, perhaps 45-90 nanos. We dont get nothing for nothing so the higher c rating means heavier batteries and I am hesitant to just add extra weight to my F4 unless there is a real benefit to do so. I beleave a higher c rating will also give me a small increase in wattage. what do you all think?
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Old Dec 04, 2012, 08:24 AM
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Toledo, Ohio
Joined Aug 2005
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I've read a ton of these posts and sorry for asking but how does this F4 fly with the stock setup? If I were to get one should I immediately get different motors & fans?

Rick
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Old Dec 05, 2012, 05:01 AM
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Arngeir Blakseth's Avatar
Molde, Norway
Joined Jan 2001
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It flies ok but sounds like a dentist drill. Using a Jetfan-80 or a Stumax SM80-45 instead will fix that problem.
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Old Dec 05, 2012, 06:15 PM
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United States, MO, Warrensburg
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Quote:
Originally Posted by Arngeir Blakseth View Post
It flies ok but sounds like a dentist drill.

Ha! Never heard that comparision before! I dont know if I can ever look at my EDF's the same now!
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Old Dec 05, 2012, 08:13 PM
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Quote:
Originally Posted by Arngeir Blakseth View Post
It flies ok but sounds like a dentist drill.
Well, not a bad thing. I can close my eyes while @ the dentist and pretend I'm flying...
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Old Dec 06, 2012, 04:49 PM
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Aaron Wallace's Avatar
San Diego
Joined Oct 2006
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Originally Posted by vasek View Post
Well, not a bad thing. I can close my eyes while @ the dentist and pretend I'm flying...
. That there is funny!
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Old Dec 10, 2012, 04:03 PM
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Wilsonville, OR
Joined Jun 2010
559 Posts
I was fortunate enough to watch Castel101 maiden his F-4 this weekend. We have a short runway and he successfully deployed his custom brake chute. Very cool! Check it out:
Flight of the Phantom! (7 min 7 sec)
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Old Dec 10, 2012, 06:03 PM
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Stone Mountain, GA
Joined May 2007
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Love the parachute!

Anybody know if there are details for the 'chute?
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Old Dec 10, 2012, 09:59 PM
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DForbes's Avatar
Michigan
Joined Jun 2005
626 Posts
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Originally Posted by Wisdumb View Post
I was fortunate enough to watch Castel101 maiden his F-4 this weekend. We have a short runway and he successfully deployed his custom brake chute. Very cool! Check it out:
http://www.youtube.com/watch?v=Nj8Ck_hykDo
Hey Wisdumb nice flying and vid!

Did you use flaps and or brakes on your F4 or was that all chute stopping it?

Thanks,

Dennis
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Old Dec 10, 2012, 10:37 PM
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Wilsonville, OR
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Quote:
Originally Posted by DForbes View Post
Hey Wisdumb nice flying and vid!

Did you use flaps and or brakes on your F4 or was that all chute stopping it?

Thanks,

Dennis
Castel101 bought the airframe from me and added all his magic touches and equipment. He was the one flying. He didn't use flaps on the maiden. I believe the chute really was the stopping force… you can see it pull the airframe to the right a little when it fully deploys.
I have to say all the talk on here about going to 8s, etc… this thing few beautifully on 6s and was very fast. Of course I wasn't the one flying, but it seemed to have plenty of power to spare from my perspective.
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Old Dec 10, 2012, 10:39 PM
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Wilsonville, OR
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Quote:
Originally Posted by dgfinch View Post
Anybody know if there are details for the 'chute?
Ask Castel101, he is the designer of that mod. I know it uses a rubber band, a pin and a servo and works like a charm.
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