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06-02-2009 01:33 AM  8 years agoPost 1
sliderx

rrApprentice

Meteghan,Nova Scotia, Canada

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I was thinking of converting my Raptor 30 V2 to electric running 550 blades. Will this motor do the job, Scorpion HK-3026-1600 Brushless Motor, if I use a 111t main with a 9t pinion and 22volt? Would a 3000mah lipo do the job also?

Art

Raptor 50 V2

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06-03-2009 04:17 PM  8 years agoPost 2
T-heli

rrApprentice

South-Africa

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Hi Slider, sounds like a fun project, i'm busy converting my 90,
I will only comment on the battery, i'd say you'd at least need a 4200 mah pack for approx 8 minutes of relaxed flying if the pack is still almost new, so going lower than that will give you much shorter flying time, i have no experiemce with your motor, i'm sure someone else will add to this

(i get 10 minutes if i push the pack which i rarely do with my t-rex 600 with 600mm blades, relaxed flying.)

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06-03-2009 10:55 PM  8 years agoPost 3
sliderx

rrApprentice

Meteghan,Nova Scotia, Canada

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Thanks for the info T-heli. To me it seems that the motor would do the job. At 22v and 80% efficient I get a head speed of 2280rpm. At 17v and 80% I get 1764rpm. I guess a 22v you can always set the throttle curve to the head speed you want, right. Is this correct or no? Here are the stats on the motor.
Stator Diameter ............................ 30.0 mm (1.181 in)
Stator Thickness ........................... 26.0 mm (1.024 in)
No. of Stator Arms .......................... 9
No. of Magnet Poles.......................... 6
Motor Wind ................................. 10 Turn Delta
Motor Wire ..................... 21-Strand 0.25mm (30 AWG)
Motor Kv ............................... 1600 RPM / Volt
No-Load Current (Io) ................... 1.52 Amps @ 6 volts
Motor Resistance (Rm)...................... 0.016 Ohms
Max Continuous Current ..................... 70 Amps
Max Continuous Power........................ 1470 Watts
Weight..................................... 196 Grams (6.83oz)
Outside Diameter .......................... 37.5 mm (1.476 in)
Shaft Diameter ............................. 5.00 mm (0.197 in)
Body Length ................................. 48.4 mm (1.906 in)
Overall Shaft Length ...................... 74.2 mm (2.921 in)
Art

Raptor 50 V2

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06-04-2009 07:42 PM  8 years agoPost 4
T-heli

rrApprentice

South-Africa

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i don't fly at those headspeeds and won't recommend it, someone please respond to the question.

all i can say is that you want to be hitting your desired headspeed at approx 75% throttle, without exceeding your battery pack's discharge rate and without overloading, underloading, overheating your motor.

Feel the motor,controller,battery after flight or see if you can get accurate readings. but first get someone else's input also.

With 3000 mah's you might be over discharging the pack, especially in emergency situations when you need to punch it somewhat to get out of a situation.

Anyone correct me if i'm wrong you'd be looking for a motor between 600-700 kv? for a 550 sized heli? I never even looked at the specs of my 600's motor though that's my gut on motor size

My 90 has a 450kv motor.

Anyhow, evaluate test, but most of all proceed with caution on
any modification/build/test.

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06-04-2009 10:31 PM  8 years agoPost 5
sliderx

rrApprentice

Meteghan,Nova Scotia, Canada

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Have been running a similar post on another forum. One of their suggestions is not to use the Raptor in 550 configuration because it to heavy for flight load for the motor and battery with the 550 blades. You use a lot of energy just lifting the weight. The only other thing would be to go to 600 size and then everything get more expensive. So I think the best for now may be to keep learning on my nitro and sell a buy electric later.

Art

Raptor 50 V2

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06-06-2009 09:32 AM  8 years agoPost 6
T-heli

rrApprentice

South-Africa

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Strange, many people here convert heavy raptor 90's, mine weighs less than the nitro version, though it has all the carbon upgrades, 550 i'm not too fimiliar with,(never had one) but what they say could be right, the shorter blades, will give less lift. So you'll need extra power.

Yes the bigger they get unfortunately the more you pay, if you're happy with your chopper, keep it as is.

There are endless debates between nitro and electric, but electrics has taken the market by storm as more and more people are realizing it's benefits, no engine tuning, cleaning/maintenence, except a bearing or two maybe, and they are clean and quiet + extremely efficient.

But upfront you pay for your 6's - 12's pack and speedcontroller, prices has gone down though. If you shop around take some time to really see what's out there you can get good for rather cheap, or cheap as can be.

All the best. The main thing is to fully enjoy your heli, regardless of what it is, Raptors are Ace heli's, mine's gonna last a 100 years

Cheers

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06-06-2009 02:51 PM  8 years agoPost 7
ady

rrKey Veteran

norfolk england

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pic1 pic2 pic3 pic4
i had a trip into electrics recently , pic 1 was a rex 600e chassis with 550mm fibreglass main blades and 6s n kasama head, flew very well , pic 2 has a tweaked head with maniacs , pic 3 was a new titan se nitro cut up and was 6s n 550mm blades , pic 4 was then upto 8s , flight times with 6s were ok and the scorpion 4025-890 was used thru out kept super cool , all i`ll say is 6s is perfectly fine and will 3D smoothly to prserve the back , going to 8s n 600mm blades made the batt temp drop and turn this heli into a beast , the 550mm gave great lift and speed, auto`d fine BUT the 600mm where alot better , its all down to moneys i suppose

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06-06-2009 02:53 PM  8 years agoPost 8
ady

rrKey Veteran

norfolk england

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oh me batts where , 6s 3250 eon lite then added a 2s later and a 6s 3750 eon28 which also had a 2s strapped to it later on

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06-06-2009 04:43 PM  8 years agoPost 9
sliderx

rrApprentice

Meteghan,Nova Scotia, Canada

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So you used your titan with 550 blades with no problem. Did you use eccmp for the control system? So in your opinion the scorpion 4025-890 motor is the way to go, and 6c will do the job but 8c is better? I do like my Raptor 30 with nitro, I have one I am flying in boom and pod and another I am setting up in a fuselage. I just thought it would be nice to set up the fuselage one in electric. The problem is the weight. It will weigh around 9 1/2 lbs I figure with the nitro set up in it. I going to add 2 1/2 lbs of weight to my boom and pod one with a .39tt engine to see how it handles the extra weight, if the weather can clear up. That's the plan. I think I will have to go to the 600 blades to handle the weight either way. Which means if I stay with nitro a .50 size engine. Got my temp gauges and see what kind of heat I get from the .39. If I go electric maybe the scorpion 4025-890 with 8c batteries. There is where the money issue comes in. It will also cost me to set up with the .50 size too. Thanks for the info here it does help. There's always someone on RR that knows something.

Art

Raptor 50 V2

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06-06-2009 06:13 PM  8 years agoPost 10
ady

rrKey Veteran

norfolk england

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the titan controls stayed the same as normal , on 6s and 550mm blades she flew perfectly , i don`t now how you fly but mine did the usual crcuits , tic-toc`s , caos , yes all on 6s , as long as you long after the sticks it`ll do the lot , just like a raptor 30 can , just a little slower thats all , the 4025-890 on 6s was spot as well as it was on 8s , on 8s the batts will run cooler tho makin the system more efficient , but you could fly for years on a 6s very easily , if you now your finished weight with the fuselage you could make up that weight before hand and attach it to the heli to experiment first

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06-06-2009 06:39 PM  8 years agoPost 11
sliderx

rrApprentice

Meteghan,Nova Scotia, Canada

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Great minds think alike. Just came in from trying the Raptor 30 with 2 1/2 lbs added weight. [drum roll] Can it lift the weight, Yes. Does it work a bit to do so, again, yes. I checked the temp after about 5 minutes of flight without the weight and got 180F at the back plate. I added the weight and did the same and it was 228F at the back plate. This is in a boom and pod configuration which is quite open. In a fuselage it is bound to be more. It does bog a bit when you hit the throttle although it did climb. So now I know. I guess a .50 engine with 600 blades would be better. So the conclusion is 600 blades would be a better choice no matter what.

Art

Raptor 50 V2

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06-06-2009 08:32 PM  8 years agoPost 12
ady

rrKey Veteran

norfolk england

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nice one , i usually find flying is the only way to sort it in the end

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