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Old Jan 11, 2002, 07:23 PM
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LawnDart's Avatar
Kelowna,BC Canada
Joined Oct 2001
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Motor fan for KC F/A-18?

Hi all

I have ordered a KC F/A-18 from the EJF. I am looking for a fan/motor/cell combo that will give it tamer (docile) performance in flight. It will be my first EDF...so i don't want to lawndart it with a hot setup.

Thanks in advance
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Old Jan 11, 2002, 11:41 PM
I'll fly anything...
GlasairAllen's Avatar
United States, CA, Palm Springs
Joined Aug 2001
502 Posts
Re: Motor fan for KC F/A-18?

Quote:
Originally posted by LawnDart
Hi all

I have ordered a KC F/A-18 from the EJF. I am looking for a fan/motor/cell combo that will give it tamer (docile) performance in flight. It will be my first EDF...so i don't want to lawndart it with a hot setup.

Thanks in advance
Good choice on the kit, one of my employees has a KC F-18 and it's a great kit.

As far as your inquiry about fan/motor/cell combos, I would go high end with this plane; Kontronik 400/29 or 400/36 (or similar), WeMoTec Mini-480 Fan, and 10 cells of CP1700 batteries. If you can afford this setup I think it's best.

If you want tamer and more docile you might try 8 or 9 of the CP1700 cells instead of the full 10.

Remember also that the lever on the left side of your radio does not always need to be in the full up position... having extra power available if needed is priceless, not having it is usually deadly.

When I went to flight school I was taught that there are three things you can never have too much of: Airspeed, Altitude and fuel. In a model having a little extra unused left stick can buy you all three (substitute battery life for fuel).

With the above setup you can probably fly the F-18 at 60% - 70% throttle with a slightly nose high attitude with no problem and save the extra 30% - 40% for when/if you get in trouble.. like the inevitable last minute decision to abort a bad landing approach and go around... an still clear the tree line at the end of your landing area.

However you decide to power it I'm sure it will be a great flier, it's a wonderful design and EJF is doing a great job of putting together KC's kits.

My 2 cents.
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Old Jan 12, 2002, 01:18 AM
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Kelowna,BC Canada
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Thanks Allen

That was exactly the info I needed
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Old Jan 16, 2002, 12:48 PM
Ain't Dutch? Ain't Mutch!
Kimble_Schmitz's Avatar
Southampton, UK
Joined Oct 2001
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Uhmmm......Allen?

Do you know what the exact diameters of the FUN motors are?

Is there a difference between the FUN 400 and FUN 480 in size?
I thought they where just a bit longer.

I ofcourse want to fit the biggest motor i can.....
It's called Minifan 480 for a reason, isn't it?!

Those Kontronic boy's didn't post eny specs on there site.
Now i don't know what will fit or what won't.


Thats the nice thing about this forum.... all those nice people!
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Old Jan 16, 2002, 01:33 PM
Dude, where's My Plane?
JasonJ's Avatar
Green Lane PA USA
Joined Mar 2001
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The Fun 400 is a speed 400 dia motor, you need to shim and support the rear of the motor in the MF-480. The Fun 480 I belive will fit snug in the MF 480. I am not aware of anyone running Fun 480s in the MF,,, I dont know why, overkill maybe???
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Old Jan 16, 2002, 01:45 PM
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Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
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480 in MF480...

I run a 480 in the Minifan 480, the Hacker B40-8L, more details you can find here:

http://www.rcgroups.com/forums/showt...threadid=10909

My MiG-15 & Eurofighter 2000 (see threads) also have a Fun 480 in it, it's in my opinion the ideal combination for the MiniFan.

Jason, did you get your F/A-18 to fly yet?
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Old Jan 16, 2002, 03:33 PM
Dude, where's My Plane?
JasonJ's Avatar
Green Lane PA USA
Joined Mar 2001
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Its been way to windy,,, . It is in the hanger and ready to go, the snow has melted but now the fields are muddy and I dont know if I can get the bungee stakes to stay in even if the wind dies down,,,, I am working on some hand launch stuff that I can fly in the wind, but the EDFs are grounded right now .
My F-18 has had the fan and spinner balanced, new shroud made of fiberglass, and the brushless motor setup added to it since the last attempts were made with the speed 480, so I am hoping for an athoritive flight for the next outing . I have added some fiber tape to the under side to cover and protect the small dings and holdes from the corn field landings , all in all the jet is now at 33oz loaded and ready. Up only one oz from the brushed setup. I may order more CP 1300 also and make some connectors so I can plug them into my 8 packs to make them modular 10 packs before the next flight,,,, what do you think 8 or 10??????
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Old Jan 17, 2002, 01:16 AM
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Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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Kontronik FUN400/480's are both 28mm in diameter. The 480 is longer and heavier (110 vs 145g)
Either will work very well in the 480MF where the FUN400 is suited if you'd try to stay light and the FUN480 where you want all out performance. The FUN480-33 on 12 cells will be a total screamer.

FUN400-36 400W max (10cells)
FUN480-33 600W max (12cells)

Kontronik specs found at http://www.motor-mike.de/Kontronik/Index2.htm (In German)
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Old Jan 17, 2002, 02:14 AM
Ain't Dutch? Ain't Mutch!
Kimble_Schmitz's Avatar
Southampton, UK
Joined Oct 2001
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So with the Minifan 480 having room for 27 mm motors.

The Hacker B40's will fit and also the FUN400 and FUN480.

Hacker 40 ..S 27,6 mm and 125 gram
Hacker 40 ..L 27,6 mm and 155 gram
FUN 400 28 mm and 110 gram
FUN 480 28 mm and 145 gram

Quote:
The Fun 400 is a speed 400 dia motor, you need to shim and support the rear of the motor in the MF-480. The Fun 480 I belive will fit snug in the MF 480. I am not aware of anyone running Fun 480s in the MF,,, I dont know why, overkill maybe???
JasonJ,
Don't know what you mean.

Haldor,
As for the link to the Kontronic homepage, i have been there.
But the links called "Maße" where i would find the specifics on mesurements have been dead for a long time.

But i'll take your word on it that they are both 28 mm dia
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Old Jan 17, 2002, 08:28 AM
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Stavanger, Norway
Joined Feb 2000
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Kontronik specs:
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Old Jan 18, 2002, 03:55 AM
Ain't Dutch? Ain't Mutch!
Kimble_Schmitz's Avatar
Southampton, UK
Joined Oct 2001
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Thank you for posting that info sheet Haldor!

Now i know what those -33 -36 name parts mean, it's coupled to the RPM/Volt.

As for choosing between these motors. I think it's more or less looking at Motocalc to which motor gives the best eff.
With the power packs you plan to use.

One more thing to look at is the price of these units.
Only problem is, this isn't the same all around the world.

So there isn't realy a best buy, all of these motors are great
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Old Jan 18, 2002, 09:14 AM
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Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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Quote:
Originally posted by Kimble_Schmitz
As for choosing between these motors. I think it's more or less looking at Motocalc to which motor gives the best eff.
With the power packs you plan to use.

One more thing to look at is the price of these units.
Only problem is, this isn't the same all around the world.
As long as you operate them around their intended powerlevels efficiency will be close to 90% Most BL's operate in the 85-90% range. As far as prices go www.hoellein.com are usually good, €119 for the FUN400-xx and €128 for the FUN480's.
FanDriveS combo is €225 (FUN400-36 and SMILE40-6-12) - super on 10zapped CP1700's in the 480MF
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Old Jan 18, 2002, 09:18 AM
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Stavanger, Norway
Joined Feb 2000
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Lawndart - if you can spring the $200 for the mentioned FanDriveS combo mentioned above in my post it will work pretty good on 8 zapped CP1300's which should make 30oz AUW achieveable, power would be around 200W which is twice of what you'd get from a s480BB Race on 8cells. Later when you've become familiar with the F18 try a 10xCP1700 pack, 400W peak. Fasten your seatbelt!
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Old Jan 18, 2002, 07:30 PM
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Kelowna,BC Canada
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Thanks Haldor!
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Old Jan 22, 2002, 10:51 AM
Ain't Dutch? Ain't Mutch!
Kimble_Schmitz's Avatar
Southampton, UK
Joined Oct 2001
3,384 Posts
I had another sniff around the Hacker site and looked at their recomandations for the Minifan.

Used motocalc to try and conpare them to what i already knew.
They match up quite good. Very equal performance!

Only the motor weight is not completely clear, motocalc uses different values then the manufacturer puts up on their site.
And to make things worse, those Hacker boys got conflicting values on their own site!!

I think i should just leave it at the logical conclusion that the FUN 480's are longer and heavier then the FUN 400's.
And that the Hacker B40 L are also longer and heavier then the B40 S motors.

No need to compare the the two manufacturers on weight. The difference is only a couple of grams.

As for prices in my local area (Holland) i think i am going for the Hacker motor. Sinds i already have a suiteble controller, a Jeti 40-3p (gold), no need to "save" on a combo job.

Am going for the Hacker B40 10S on 8x RC2400 with my Jeti 40 amp controller.

If i look at motocalc, it should give me the same power as the FUN400-36 on 10x CP-1700 but almost a minute longer run time with the same total weight.

=>Haldor
Don't know how you get 400W out of 10x CP-1700 with the FUN400-36 , it's more like 300W static.
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