Multiplex Fun Jet, Park Flyer Foam Airplane Review - Page 3 - RC Groups
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Apr 29, 2007, 02:04 PM
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Jurgen Heilig's Avatar
Originally Posted by PLATINUM
Great review!

I have one of these with a Medusa on a 6x4 on 2250's.. vertical out of site, 90mph dives.. and about 75-80mph level flight.. I have to tape the canopy on. Somewhere there is a lipo in a field launched from the canopy popping off.

If you plan on putting an uber motor in this. The stock canopy latchs are not enough.
I don't think the Lipo was launched because the canopy came off. I think it was rather the other way round. My Lipo is secured with a velcro strap, and the stock canopy holders are good for well above 100mph.

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May 01, 2007, 09:38 AM
Registered User
Would a 2025-5300 HImax and a four inch prop fly this? I dont need blistering speed, but would appreciate decent stability?
May 01, 2007, 10:32 AM
"Have Glue - Will Travel"
dawnron1's Avatar

I think that's a little too high kV; the FunJet likes thrust as much as speed, so a 4" prop is pretty small for this application.

May 01, 2007, 12:09 PM
Registered User
Kind of what I thought. Thanks for the input. Im still getting a hang of brushless equivelents vs brushed etc.
May 02, 2007, 09:46 AM
Registered User
ON the other hand, what about outrunners on this and similar such as the Stryker etc? The high pitched noise of direct drive is a concern in town, and outrunners seem to have this under control.
Last edited by stuka; May 02, 2007 at 11:27 AM.
May 06, 2007, 01:43 AM
Yankin' and Bankin'!
r1derbike's Avatar
I've got one that I'm putting my old Stryker's running gear in, as soon as I open the box. I had a servo failure that caused my old Stryker to auger-in very nicely. Never did find the battery, either.

I got another Stryker, but needed something to put the motor and esc in, and voila!

May 06, 2007, 03:39 AM
Registered User
Jurgen Heilig's Avatar
Originally Posted by stuka
ON the other hand, what about outrunners on this and similar such as the Stryker etc? The high pitched noise of direct drive is a concern in town, and outrunners seem to have this under control.
It does not matter whether you use an inrunner or an outrunner. It is the disturbed airflow which hits the prop at high rpm which causes the noise.

Running a prop with higher pitch at lower rpms helps in this area, but they are less efficient at lower speeds, as they are usually running in stalled conditions then.

May 06, 2007, 09:41 AM
Chesapeake Bay RC Club
Gary Hoorn's Avatar
I run a "CDR Hot Wind Double" outrunner motor using a 6x5.5 prop. The noise is loud enough to drown out some nitro birds. As Jürgen says, inrunner or outrunner does not determine the noise developed.
Nov 03, 2007, 06:58 PM
Pro Bro # 2398
GassPasser's Avatar
Have The Kit, Will Build.
Nov 04, 2007, 12:21 AM
Registered User
faststick's Avatar
I powered mine with a kontronik 400-28, a t-bird 54 amp esc, 5.5x4.5 apc, it peaks at 46 amps with 380-395 watts. I like the 3s 2200-20c packs from todd's models. I can run wide open till I can't see strait and not a problem and I think they're only 42 bucks a copy. Been abusing them for months now and no problem. The funjet is a total blast to fly, and where i fly it's on an open hillside, it's a gas to do huge highspeed circuits diving down past you at blistering speeds! I'm getting all worked up can't wait till tommorrow!

Bye now, George
Nov 04, 2007, 07:45 AM
Pro Bro # 2398
GassPasser's Avatar
good luck, been trying to finish mine all week. but been busier than ever at work. good luck tommorow faststick.
Nov 04, 2007, 12:28 PM
Go Hawks!
cryhavoc38's Avatar
Just put my funjet back into the air yesterday after not having flown it in a couple months. Kinda forgot the need for speed.

Mine is powered by a Mega 16/15/3 through a 60amp Dynam opto, with a UBEC. HS-65HB's for the servo's since there is no way I would trust an HS-55 or an S-75 to be able to provide enough torque for the surfaces in high speed yanking and banking. The prop is a 6x4 since I like to have lots of thrust to go straight up. I had tried a 5x5 which is a little faster, but I didn't get unlimited vertical with that one.

The batts I use in the Stryker are FP Evo 25 11.1v 2500mAh and when these have run dry, I use a couple Mystery 2100 11.1v 20c cheapies that work great as well.

If the weather cooperates, I'm heading back to the school yard with the Funjet before the seahawks game, oh and of course, the Colts/Patriots game.
Nov 05, 2007, 08:39 PM
Pro Bro # 2398
GassPasser's Avatar
the colts are the real deal.
Nov 06, 2007, 08:05 PM
Mom says I'm special...
beafraid8's Avatar
This plane is pretty sensitive to CG issues. Balance it just in front of the marks for the first flight or so...
May 27, 2008, 02:51 PM
Pro Bro # 2398
GassPasser's Avatar
Originally Posted by mike3976
Pretty pork'ey at 102 grams!
finally flew my FJ for the first time today and i guess i got lucky. hand launch went perfect and i didnt have to make one trim adjustment, she flew as if on rails. landing after 7-10 minutes without a scratch. my brother was yelling at his wife to come out and see this thing fly. he thought it was a toy plane and had no idea how fast and great it would fly. heck, my hands are still shacking alittle!

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