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Old Jul 07, 2010, 01:11 PM
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Airfield F15 from Nitroplanes

Want to know what setup you would recommend for the 64mm EDF Airfield F-15 from Nitroplanes. It is apparently a re-badged FMS.

The stock fan/motor combo is said to be underpowered, what a surprise!

I want it to be strong and stable, but does not have to break any speed records.

Thanks,

Matt
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Old Jul 07, 2010, 05:53 PM
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Originally Posted by bigmattyd View Post
Want to know what setup you would recommend for the 64mm EDF Airfield F-15 from Nitroplanes. It is apparently a re-badged FMS.

The stock fan/motor combo is said to be underpowered, what a surprise!

I want it to be strong and stable, but does not have to break any speed records.

Thanks,

Matt
Depending on your budget, I recommend a DonsRC 64mm EDO fan with his Wicked 4000kv outrunner motor. He'll even balance the set-up for you. It's a smooth "plug and play" EDF solution I use in a number of different airframes, and am currently installing in a Nitroplanes F-18. Good luck.
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Old Jul 07, 2010, 11:52 PM
Wonderfully Wicked
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There are two ways to go with this. You can go 3S and a 40 amp ESC and fly a 3S2200 lipo. Or (what I would do) is run the wicked 4000 on 4S. But those airfield fan units must be balanced as they are way off and on 4S will vibrate like crazy.
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Old Jul 08, 2010, 10:06 AM
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thanks

Ok, thank you for the quick replies.

I was thinking about upgrading the fan, esc, and motor, but if the stock Airfield fan unit is ok, maybe I will attempt to balance it and just get a new motor. (I realize the fan and motor have to be balanced together as a unit after assembly.)

However, the cost to upgrade the fan unit is relatively low, and I am betting Don's units are a step up in quality and durability from the stock unit.

I would like to stick with a 3s lipo because that is what I have, and I think the decreased mass of the battery is preferable in this smaller size plane. I don't want to increase the overall weight too much.

I have ordered the kit, but not received it yet. I am getting a little ahead of myself. I also have to consider how much my wife will let me "invest" in this hobby...

I am going to test it out in the stock configuration for a while. It looks like even the stock setup will be fun for basic flying and such.

Don, is it your opinion that I should stick with the stock fan and upgrade the motor and esc, and batt. Or should I just go with a new fan as well?

Matt
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Old Jul 08, 2010, 10:59 AM
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EDO type 1 or 2?

If I wanted to get a new motor and fan unit, would I be looking at the EDO type 1 or 2?

I have decided that if I upgrade, I would want to get a pre-balanced combo fan and motor unit.

If I use 3s lipo, would I want to use the wicked 4800, and 4s battery use the 4000?

Matt
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Old Jul 08, 2010, 12:44 PM
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[QUOTE=bigmattyd;15493307]
"I also have to consider how much my wife will let me "invest" in this hobby... "

You have to time the deliveries to show up when she is not home.

Mark
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Old Jul 08, 2010, 03:09 PM
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you're right.

I agree. I only casually mentioned this to my wife the other day, but then went ahead and bought the kit. I was nervous about bringing it up, but today we had a little discussion. It turns out we have both been spending a little more than we wanted on our "hobbies."

So, I guess I am ok for now, but I can see that it is an addictive sport/hobby. The cool thing is that nowadays you can get this cheap Chinese stuff at least as a starting point to try it out, without spending a ton of money.

I know that in the long run it will be wise to get better quality equipment, but for now I just want to get a taste of the experience. I have flown RC before, but with gas powered "trainer" aircraft. They are not all that fun or realistic looking, and soon become boring.

I also have a pilot's license, but find it far too expensive to fly real aircraft as a hobby. I fly on the computer, and although it is pretty cool, it is too far detached from reality.

matt
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Old Jul 08, 2010, 10:04 PM
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I can write on the boxes whatever you like so the wife never knows :-)

As far as the stock fan the stock fan is fine, I have tested them and the pull essentially identical watts and amps as the EDO fan I have. The airfield rotor is quite strong which I like but they are way out of balance and need lots of ballast to get to spin well. I have not yet flown a model with this fan unit yet just ran it up and balanced with a wicked motor for a guy. If you want to stick to 3S lipo, then the Wicked 4800 is what you will want, it will be about 380 watts on the stock fan and you will need a 40 amp ESC and a 3S2200 30C lipo for best performance.

The EDO type I fan I sell is the strongest of the two and what I suggest for 4S operation. I actually am going to do some testing on the Airfield style 64mm fan as I am getting some samples, if they are OK they may be a good 4S rotor once balanced and I will offer them on my website for sale.
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Old Jul 09, 2010, 08:42 AM
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Thanks for the info!!!

Also, thank you for your great work!

Do you have a link to any info on how to balance the impeller at home?
I found your thread on the dynamic balancing system you are now using, but I was wondering if there was any way I could do a basic balancing myself?

I will likely purchase one of your motors and ESC at some point in the future, so thanks in advance for your support.

I may just take your advice and use a 4S battery system. It looks like it is only a small difference in cost and weight. I will do some practice flights with the stock 1300mAh 3 cell system to get a hang of its flight characteristics at a lower stall speed at stock config. Then I will consider the upgrade path...

Matt
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Old Jul 09, 2010, 10:31 AM
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Originally Posted by bigmattyd View Post
I agree. I only casually mentioned this to my wife the other day, but then went ahead and bought the kit. I was nervous about bringing it up, but today we had a little discussion. It turns out we have both been spending a little more than we wanted on our "hobbies."

So, I guess I am ok for now, but I can see that it is an addictive sport/hobby. The cool thing is that nowadays you can get this cheap Chinese stuff at least as a starting point to try it out, without spending a ton of money.

I know that in the long run it will be wise to get better quality equipment, but for now I just want to get a taste of the experience. I have flown RC before, but with gas powered "trainer" aircraft. They are not all that fun or realistic looking, and soon become boring.

I also have a pilot's license, but find it far too expensive to fly real aircraft as a hobby. I fly on the computer, and although it is pretty cool, it is too far detached from reality.

matt
LOL, I'm also a pilot and used to own my own plane but like you said, it just got too expensive. Besides, I'd never be able to fly a jet. Hey, if you are going to buy a Wicked motor anyway, I'd recommend you just go ahead and get the balanded EDO I fan. I have a lot of different EDFs and "none" of them spin as smoothly as Don's balanced ones. You will not be disappointed.
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Old Jul 09, 2010, 11:00 AM
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Yes, flying is expensive. In 2000, when gas prices were "low" I was paying $85 an hour for flying time in a Piper Warrior. I can only imagine with a doubling or tripling in gas prices, that must be up to double that price.

I am strongly considering a pre assembled and balanced setup from Don's RC. I was wondering if the EDO Type I fan unit is an easy retrofit for the airfield unit, or will I have to do some modifications to get it to fit?

Matt
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Old Jul 09, 2010, 12:25 PM
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Yes, flying is expensive. In 2000, when gas prices were "low" I was paying $85 an hour for flying time in a Piper Warrior. I can only imagine with a doubling or tripling in gas prices, that must be up to double that price.

I am strongly considering a pre assembled and balanced setup from Don's RC. I was wondering if the EDO Type I fan unit is an easy retrofit for the airfield unit, or will I have to do some modifications to get it to fit?

Matt
I don't know about how easy the retrofit would be. It depends on the "shape" of the stock unit. The EDO fan has a bit of a lip on the front so if the stock one didn't have that, you'll need to carve/sand to allow for that. The F-18 I'm finishing up already had a lip so it was a simple swap out. I just needed to chose my battery and modify the battery location a bit to get the CG right because with the stand-off mount, that outrunner is hanging back a bit more (so you need to adjust other bits to account for that).
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Old Jul 09, 2010, 02:26 PM
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I don't think I would have too much problem modifying the fuselage to hold a little bit larger fan casing, it is foam, after all... However, I just wanted to make sure there weren't any drastic differences in shape or size.

As to the weight and balance issue, if I am using a new, larger battery and ESC, I will be working on rebalancing anyway. I am assuming the motor extends aft of the CG, requiring weight to be shifted forward, which a larger, heavier battery would probably do...

I can't wait to get started on this adventure.
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Old Jul 09, 2010, 08:47 PM
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Originally Posted by bigmattyd View Post
I don't think I would have too much problem modifying the fuselage to hold a little bit larger fan casing, it is foam, after all... However, I just wanted to make sure there weren't any drastic differences in shape or size.

As to the weight and balance issue, if I am using a new, larger battery and ESC, I will be working on rebalancing anyway. I am assuming the motor extends aft of the CG, requiring weight to be shifted forward, which a larger, heavier battery would probably do...

I can't wait to get started on this adventure.
Yes to all the above and good luck. I've finished my F-18. Now I just have to get the nerve to toss it.
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Old Jul 09, 2010, 08:52 PM
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I am 99% sure the EDO I fan housing and the Airfield fan housing are the same external size. I will post some photos.

Don
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