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Electric Q500

Old 03-19-2010, 09:21 AM
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Default Electric Q500

I have converted my O.S. 46 powered Q500 to electric power Have not had a chance to fly it yet I think it will go very well Look at the clean profile from the front in the before and after pictures
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Old 03-19-2010, 09:23 AM
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Default RE: Electric Q500

Pictures
Old 07-21-2010, 01:06 AM
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Default RE: Electric Q500

SEtup? motor? ESC? Battery?????
Old 07-25-2010, 10:38 AM
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Default RE: Electric Q500

Hi ALL

Patience 2Walla, you have to let the electro-motive "force" come to you...Beware of the dark side! LOL

Carlos G.
Old 08-11-2010, 06:27 PM
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Default RE: Electric Q500

I have used two setups
E flite P46 motor E flite 60 amp Pro Switch- mode ESC This setup with seperate battery for receiver This setup with a 11/8.5 electric prop 6 cell 2200 Li Po Radar clocked at 116 MPH Flew 10 laps Down side The ESC burned up and would not produce full power after flight Took it apart and found some of the IC's were toast. The motor when used with another ESC will not produce the same RPM or power as before The motor is rated for 5 cells max Both units are bad It was an expensive run
System number 2
Rimfire 46 Brushless motor ElectriflySilver Series SS80 ESC This is an 80 amp unit The motor is good for 100 amps 22,volt (6 cell Li Po) 1850 watts It draws 55amps Using a 10/7 APC prop it turns 14200 RPM The plane now weighs 4 lbs with batteries I have many flights on it I raced it against OS46 powered Q500 in our last contest Came in second I'm 78 I sure a younger pilot with better thumbs could due better
The E Flite motor looks like it will turn a larger prop lower RPM I think the Rimfire motor is closer to glow engine performance The 10/7 prop is the same prop we use on our OS 46 engines A good OS will turn that prop 14 to 15 so the Rimfire is pretty close
The 80 amp ESC is probably to much but Nothing gets even warm after at 5 minute flight The batteries are only slightly warm
DO NOT use the receiver power provided by the ESC Use seperate batteries for receiver power or another voltage regulater Connected to the LiPo power
I think our present Q500 designs could be used for all electric racing
You don't need a helper to hold the plane for start He can stand next to you and call your first turn on number 1 No flite box to carry out to the line No fuel to mess with or glow plugs to check Just plug in a battery and GO!!!!
Well you will probably need a battery for each round $$$$$$$
Old 09-19-2010, 12:56 AM
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Default RE: Electric Q500

Hi Albert.S,

Thanks for taking the time to answer the questions regarding your set-up for Q500 type planes. Its just as good to learn about "failures" as well as sucesses. I happen to know 2walla and he is a competitive guy. I think he wants Nelson Engine Performace out of $9.00 'lecky motors and $5.00 battery packs. I guess I will have to "Call Him Out" (LoL). Since in all likely hood these planes will not have a long life expectancy, we need to get a couple of 'top ramen' motors & batteries to get some planes up and running!

Thanks Again for the Info!

Carlos G.
Old 09-20-2010, 09:16 AM
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Default RE: Electric Q500

Latest change I purchased a controller from Castle A 75 Lite series It weighs around 1 1/2 ounces It records 8 different flight data and then you can read them out on your computer after the flight and see what needs to be changed WOW What a piece of enginneering
Old 10-10-2010, 08:09 PM
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Default RE: Electric Q500

Thanks for the info on your setup.. If I do one for speed it will have to get with it.. I am looking at a couple of Hacker heli motors.. I think that that I will need something capable of 1000w with a 1000kv wind on it. A40 Problem is I have a nicely built Q500 and I don't want to hack it up to put in a large battery.. I may have to downscale the need for speed or just give up and bolt up the Jett 50 to it...
Old 11-12-2010, 03:42 PM
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Default RE: Electric Q500

Hi lads,

nice plane! I'm considering to join the Dutch EQ500 racing league, it's a slight bit different than the rules international rules, but very good competition. Motors are limited to two different ones, each with a prescribed prop size. Hyperion Z4020 08 turn 915 KV with a 10x8prop, or Turnigy 50-45 890kv with a 10x10 prop. This way they keep us going at the same laptimes as the methanol guys (they use Irvine .39s. Noise wise things like the Nelsons are not allowed here). My set-up will be the Turnigy, and I bought a 125A (overkill...) Himodel ESC with BEC. Not very fancy, but it does the job. With these tight restrictions on the drive, it makes exiting racing!

Very different question @ Albert.S: What plane is that? I like thinking out-of-the-box, I'm in the middle of designing something special myself. This is inspiring!

Cheers,

Hugo
Old 11-13-2010, 10:14 AM
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Default RE: Electric Q500

IT is my own idea Reduce the fuse drag The servos for the tail are buried in the wing one on each side The pushrods go down the booms The wing is a Q500 wing Foam balsa construction You could use any wing type construction The aileron servo is mounted in wing also The tail is a Q500 tail cut apart and mounted on the booms and joined at the top It flys very well and take offs are great since the prop wash is trapped between the tail and the ground No Rudder needed Changes needed - The ailerons need to be moved out The booms should be at least 10 inches apart The booms must be made STRONG!!! hard balsa ply lamination???
Old 11-13-2010, 11:34 AM
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Default RE: Electric Q500

Smart design, I like it! But I´m afraid it won´t be accepted under the Dutch rules. I do have another plan to reduce drag (frontal area) and make it turn easier. The Dutch rules say: The fuse needs to be box-like, with a rectangular or square crossection. It needs to be 88.9mm high and 73mm wide (at least) somewhere at the wing connection. Here´s my idea, feel free to comment:
I want to tilt the crossection of the fuse 45°. So the crosssection at the wing connection is a tilted square with 64mm sides. This means the fuse is (square root of 2) times the side lenghth of the square crosssection = 90mm hight and wide. But the frontal area of the plane is not 88.9 * 73 = 6489,7mm2 but 4096mm2. Also the fuse sides require less material to make, so should weight less. And I think the fuse will create less resistance in the corner when you push the tail down to make it turn.
Did I make that clear, and if so, what do you think of the idea?

Cheers,

Hugo
Old 11-13-2010, 01:38 PM
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Interesting The things that I found most important with an electric plane !. Cooling I have ruined two controllers getting them to hot Batteries must have cooling air also 2. The ability to change the batteries without taking the plane apart On race day you have to be ready for the next heat The plane with the booms is in plane heaven now The latest idea is converting a Stock Q500 to electric The fuse has to be longer in the front for balance 1 inch.The fuse is 5 1/2 inches from wing to Firewall Holes around the engine to let air in. The batteries go in the front where fuel tank was There is a cover over the servo access hatch that is open to allow exit of cooling air The controller supplies power for receiver The fuse is completely open to allow the air to flow freely The weight without batteries is 3lbs 6oz Some where between 3 1/2 and 4 depending on how many batteries are used
Old 11-13-2010, 02:02 PM
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Default RE: Electric Q500

Yep, cooling is certainly the key. I will indeed lengthen the nose in my design, and/or move the wing back a bit. I would like the battery to be in the CG (or almost). I know the weight doesn´t change during flight, but I want the heavy bit in the CG. The design will also have the ESC suspended outside the airplane on the underside, to keep it cool. And I will use a 125A ESC, while I will probably only peak at 80 or 90. I will use 5S3000 40C packs. The 5S is mandatory in the rules, the 3000 is enough for a heat and the 40C are the best within the budget, Zippy from HC. My idea has one major problem, though, the battery only barely fits inside, very little room for anything else...

Hugo
Old 11-13-2010, 03:56 PM
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Default RE: Electric Q500

Consider using more than one pack I have two plugs so I can fly with any combo of cells You could put them in "Series " one behind another I did that in my first one since it had a small front fire wall My favorite ESC is the Electri Fly SS80 Very Rugged could you use a 3S and a 2S to make a 5 cell power supply ? I have 2S and 3S packs so I can fly with 4.5. or 6 cells
Old 11-14-2010, 03:31 AM
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Default RE: Electric Q500

I thought about using 2 packs, but unfortunately the rules state you can only use one. It´s back to the drawingboard... I´m designing the wing, now, using depron ribs and a fibreglass skin.. Not sure how, yet, though.

Hugo

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