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Old Dec 09, 2008, 10:37 PM
I buy, I fly, I buy....
Wingwrecker's Avatar
United States, OH, Toledo
Joined Feb 2008
1,969 Posts
Yup the manual says M3x16
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Old Dec 10, 2008, 01:14 PM
Registered User
Bay Area, CA
Joined Sep 2007
1,162 Posts
Funjet Reinforcement 101

Pictures speak thousand words. I guess it is somewhat true...

Funjet reinforcement, using kevlar, fiberglass, epoxy resisn and carbon tubes, all in pictures, if anyone interested.

http://www.rcgroups.com/forums/showt...4#post10942184

happy flying !!!!
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Old Dec 10, 2008, 05:55 PM
Live to fly
bighead93's Avatar
Sacramento
Joined Apr 2005
5,561 Posts
Quote:
Originally Posted by numb_thumb
Pictures speak thousand words. I guess it is somewhat true...

Funjet reinforcement, using kevlar, fiberglass, epoxy resisn and carbon tubes, all in pictures, if anyone interested.

http://www.rcgroups.com/forums/showt...4#post10942184

happy flying !!!!
Some great info!!
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Old Dec 11, 2008, 03:55 PM
Live to fly
bighead93's Avatar
Sacramento
Joined Apr 2005
5,561 Posts
Ok guys...Maiden completed! Now it seems like I am running out of thrust using the 4.79X4.79 with a Mega 16/15/3 and 3S 2200 25C lipos. Is there a better choice of prop? I am going to try my 4S 2200 later today.
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Old Dec 11, 2008, 06:51 PM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
Quote:
Originally Posted by bighead93
Ok guys...Maiden completed! Now it seems like I am running out of thrust using the 4.79X4.79 with a Mega 16/15/3 and 3S 2200 25C lipos. Is there a better choice of prop? I am going to try my 4S 2200 later today.

I am building my 4th funjet and have never gone crazy with all the fiberglass mods and so on, but have used many different motors and prop combos and personally, the plane never seemed to perform well with any APC prop smaller than a 6x4. It does okay on a Graupner 5.5x5.5 too. Smaller props in the 5x5 or smaller range just seemed to do much less speed for me, and was verified on my hand held radar gun. I ran the Mega 16/15/3 with a 45 amp ESC and 6x4 prop with no problems.

The one I am putting together tonight has a ARC 28-47-1.5 with a Suppo 75 amp ESC and a separte BEC. With this set up I should be able to fly on 3 cells, 4 cells or even 6 cells. Won't be easy to get proper balance though with all those different batteries....
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Old Dec 11, 2008, 06:52 PM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
Quote:
Originally Posted by Wingwrecker
Take the original flathead screws (which do suck) with you to your LHS or hardware store and have them match up the threads. Do get allen head bolts. They make it soooo much easier if you plan to tinker with motors.

I always just chucked a flat head bit into my cordless drill and used it to take the screws in and out, makes it easy and no problems.
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Old Dec 11, 2008, 06:58 PM
The Kid
Thekid3418's Avatar
Detroit, MI
Joined Dec 2007
2,587 Posts
Gyroron, you don't know to look past the 1.5T on 4s with a 6x4, that will be a fast setup on your funjet. Because of the high kv of the 1.5T, i doubt you could go fast 5s without burning things up. Maybe 5s, with a 4.75x4 prop or something similar. 6s you are limited to about a 4.1x4.1, but it sure would sound cool and make a lot of noise!!!
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Old Dec 11, 2008, 07:16 PM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
I have been out of the " Funjet " loop for over a year. About 2 years ago my R/C friends and I stumbed onto the Multiplex Microjets, and we had a blast with them, but keep tearing them up with bad hand launches. Once we couldn't find anymore new Microjets we started flying Funjets.

We kept pumping up the funjets and flying them past the radar gun, and got pretty wild with them. I flew this motor and ESC on 6 cells last winter and was pushing 140 mph I believe ( I posted the speeds in this thread a zillion posts ago, and am too lazy to go look for it. ) Anyway it was a real screamer!

Then after reading all the posts on the forum here, looking for more speed, I decided to try out a pylon racer, and bought a Sunracer II. The Sunracer is powered with ARC 28-47-1 and a 45 amp ESC and using a Flightpower 3 cell, 2200 mah I believe..... Anyway, the plane has made passes in front of the radar gun at over 165 mph, and it seems to do over 100 mph on less than 20 percent power. This has satisfied me speed wise.

I am just putting together another funjet to goof around with. The Sunracer demands 100 percent attention to fly, it can get FAR FAR away in a hurry and It is hard to see at time due to the thin profile and small overall size. It is easy to launch, but comes in blazing fast and even with flaps it just glides and glides.... So needless to say it isn't a casual plane to fly. The Funjet was easy to fly and relaxing even, so I figured I would put another one together for the hell of it.
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Old Dec 11, 2008, 07:24 PM
zoom zoom
gotboostedvr6's Avatar
USA, NJ, Mt Laurel
Joined Oct 2007
3,691 Posts
Use a 4000 4s and the ARC -47 1.5 and a 5.5 x 4.5 should be the ticket for speed.. the 6x4 will develop a bit of TQ roll and not enough pitch speed. It will also unload too much at speed.
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Old Dec 11, 2008, 07:42 PM
Registered User
Bay Area, CA
Joined Sep 2007
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Quote:
Originally Posted by GyroRon
The one I am putting together tonight has a ARC 28-47-1.5 with a Suppo 75 amp ESC and a separte BEC. With this set up I should be able to fly on 3 cells, 4 cells or even 6 cells. Won't be easy to get proper balance though with all those different batteries....
It is very easy to do. You can use 3s 3300-3850 or 4S 3300-3850 or 6S 3300 or 6S 3850 if you are insane, and you won't run into balancing problems.

All you have to do is to cut the turtle up until the carbon spar and attach it to the canopy and make it one loooong canopy.

Thekid3418 is right about the amps, be sure to prop down when you amp up.

Happy flying !!!
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Old Dec 11, 2008, 09:44 PM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
I don't know how I had this combo flying before, must have been on two 3 cells in series. Tried using 3 cells, and 4 cells by themselves, even in tied together and too much draw on the batteries, this is with a 5.5x5.5 Graupner. I think I am just going to swap out the ARC motor for something more sane, like a Mega 16/15/3

Anyone want to swap out good Mega or equal motor for my ARC?
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Old Dec 11, 2008, 10:17 PM
zoom zoom
gotboostedvr6's Avatar
USA, NJ, Mt Laurel
Joined Oct 2007
3,691 Posts
How much to outrite buy the arc?
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Old Dec 11, 2008, 10:36 PM
The Kid
Thekid3418's Avatar
Detroit, MI
Joined Dec 2007
2,587 Posts
What do you mean by something more sane? The mega is a smaller, hotter motor...hm

I have my sunracer ready to maided, can't wait to see if its as hyped up as everyone makes it sound.

But i don't want too many people in this thread to think i have a mouldie
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Old Dec 12, 2008, 12:11 AM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
Quote:
Originally Posted by Thekid3418
What do you mean by something more sane? The mega is a smaller, hotter motor...hm

I have my sunracer ready to maided, can't wait to see if its as hyped up as everyone makes it sound.

But i don't want too many people in this thread to think i have a mouldie
I have a ARC 28-47-1 in my sunracer and use a Flightpower 3 cell 2500 pack, not sure if my sunracer would balance with a lighter motor in the nose, there isn't much room to move things around inside it.

I flew my first two funjets with a Mega 16/15/3 and a 3 cell 2200 pack and it was pretty sweet
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Old Dec 12, 2008, 12:12 AM
I'd rather be flying
GyroRon's Avatar
South Charlotte NC
Joined Jan 2007
229 Posts
Quote:
Originally Posted by gotboostedvr6
How much to outrite buy the arc?
I don't know what it is worth, make a reasonable offer.
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