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Century Radikal E640 - Swift 16 NX
› swift 4s / 550+ questions and setup
08-13-2007 12:42 AM  10 years agoPost 1
rcmarty

rrVeteran

Penticton , B.C.​CANADA

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Looking to try out the swift on 4 cells.
I fly my hv trex 600 on 2 x 4s 3700 evo 25's, i made the packs up so i could split them and run 2 flights on the swift.

I have fitted the pack up front under the canopy , still a bit tail heavy. Fitted the 550+ motor with a 9t pinion. I have some 530 glass blades and the stock woods.

One thing that throws me off is the esc requirement. I heard peaks in the 100a range. The specs on the motor say max of 45 amps. I have borrowed a jeti + 77 amp esc from a fellow flyer , but if the max i'll be pulling is 45-60a then the ph hv45 i have should work ? I know the hv45 will take 60a pokes without problems.

I'm looking to set up for as much power as i can achieve with this setup. I'd like to do some 3d with it.

If anyone can give me some instite into the setup.
Pics of the equipment welcome also , i'm finding it hard to get it to balance.

Or any other details i forgot , please let me know.

Martin

What goes up will come down.... one way or another !

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08-13-2007 11:18 AM  10 years agoPost 2
Ben-T-Spindle

rrProfessor

Central Illinois

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4x3700 is going to give a very short flight time.

... BTS

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08-15-2007 04:54 AM  10 years agoPost 3
oldfart

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Vancouver, Canada

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Depending how you gear it (resultant head speed)and what blades you use (loading) - for docile flight to yee-haw hot dog - will relate directly to your flight time.

the 1470 kv of the 550+ with a 4S pack will give you a motor speed of 21,756. The 9T pinion results in a gear ratio of 10.67. So at 85% efficiency your head speed would be about 1750. Using a good 3700 4 cell FP or TP pack will give you about a 5 1/2 to 6 minute flight. At this RPM you can do 3D, but the cyclic will not be as quick as if you geared for higher RPM.

With this set up you may have the odd peak of only 50 to 55 amps. SO any decent 45A speed controller should easily handle that. My Century 55 amp unit has no problems at all with it.

Going to a pinion of 10T would result in much snappier performance and at a head speed of around 1925. But your flight time would decrease accordingly, probably around 4.5 to 5 minutes.

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08-22-2007 05:54 AM  10 years agoPost 4
rcmarty

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Penticton , B.C.​CANADA

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Does anyone have any settings for a ph hv45 esc on the 550 + outrunner ?

Any suggestions ?
Software version ?

Curently running 1.51

Should i drop the pitch to 8 degrees ? Will it still be somewhat energetic ?

I'm looking for a hotter setup but it seem like the 600+ on 6s is what i should have done , going to see how this pans out first. I might put the woods back on it and sell it off as a trainer. From what i've read this is a great setup for training to light 3d.

Martin

What goes up will come down.... one way or another !

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08-22-2007 06:36 AM  10 years agoPost 5
oldfart

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Vancouver, Canada

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Have you tried the 10T pinion?

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08-22-2007 06:17 PM  10 years agoPost 6
trevorz

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Calgary, Alberta​Canada

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Hi Marty,

What blades and pinion are you running for that? It should be a good setup for light 3D.

I am not sure you saw mine at Kelowna with the 6S and 600+. It is a good powerhouse for sure!

Trevor.

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08-22-2007 06:25 PM  10 years agoPost 7
Jag72

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South of Boston

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4s?

I don't think 4s will be sufficient...especially with 550's

I have tried 4s logo 10's spinning 500's and they just don't make the power for 3d...you may be able to get away with light aero's but I wouldn't even attempt to fly a 4s logo or swift like that..

lower voltage(4s) means higher amp draw...I would expect peaks of 100amps or better on 4s with 550's...I used to run castle 80's in my old 4s logos and smoked those a few times...

so you will definitely need something beefier than a 45hv...the 45hv is a "High Voltage" esc...meaning it can handle up to like 12s(44.4v) but can only handle 45amps...

think about it...voltage x amp = watts...

4s=14.8volts
lets say 50 amps
so 50 amps x 14.8 volts=740 watts...

that's not much power...even at 50 amps...

take an 8s setup now and you can make the same power with half the amperage...I would at least go with 5s or 6s

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08-23-2007 02:16 AM  10 years agoPost 8
rcmarty

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Penticton , B.C.​CANADA

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I've got a 9t fitted right now.

I've got the stock woddies and a set of 530 glass blades. Going to try the glass ones first. 550 mm blades are out of the question , a smart choice would be the 515 rotortech's but i don't have them and there a little much for testing out a setup.

Trevor ... you had the 550 carbon right ? I like how that one flew.

I do think the 600+ on 6s would suit me. For the time being though i'm going to see what the 550+ will do for me. To be honest i'm not getting my hopes up. If i don't like it , i'm going to sell it off as a trainer. I think as a trainer it is a great setup but for 3d it will be weak.

I have the ph45hv from the old setup (neu 1910/1.5y) i ran on 9s emoli's. I've since outgrown the emolis and have been spending my face off on t-rex's (600e hv , 600n , 450 v2) so the swift has taken a back seat for now.

The ph 45hv is known to handle 60a without issue. I'm thinking this should do for an evaluation, Honestly speaking i'd prefer a higher amp esc. If i'm happy with it , i think the align 75a would be a cheap route. The motor is rated for max amp peaks of 45amps according to the instructions.

jag72 ... I know it seem like the wrong esc and it is in a way the wrong one , as you can see i'm trying a differnet angle on the swift. Thanks for the electrical review , good ole PIE formula. I'm an electrician by trade. It did throw me off though, being 4 cells i was expecting 100a peaks , but then the motor is rated for 45amps got me thinking the ph45 could do the job.

Martin

What goes up will come down.... one way or another !

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08-23-2007 04:51 AM  10 years agoPost 9
trevorz

rrApprentice

Calgary, Alberta​Canada

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Hi Marty,

Yes mine was the carbon one. I think the 6S 600+ would do you great, but the 4S 550+ should be pretty good as well, as it is quite a bit lighter.

Keep the blades in the 520 or 515 size. The 530 should be ok too. Try increasing the pinion to the 10 tooth, but watch your batteries as to not drain them too much.

I am running the 45HV in mine with no problems, although with 6S and 560 blades.

Regards,
Trevor.

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08-25-2007 07:20 PM  10 years agoPost 10
rcmarty

rrVeteran

Penticton , B.C.​CANADA

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I got to try out the swift today.

550+ motor / 9t pinion / 100% throttle
ph45 hv
medusa bec
530 mm glass blades
around 10 degrees pitch
guessing 1800 rpm
401/9254
3151's
ar7000 spectrum
4s 3700 fp evo 25 pack

peak amps of 56.3 average 12.3 to hover
watts 752 peak average 173w
Pack voltage 13.2v , avg 15.2 , 16.7 max

Did some large figure 8's and a few climbs with it. A few 1/2 rolls and 1/2 loops for a turn also.

Seems very forgiving setup that would be great for learning on. I'm looking for more power though.

Any suggestions to perk it up ?

Any idea's what would be fair for the heli ? (without , ar7000 rx , no packs , and or no 401/9254)

Thanks , martin

What goes up will come down.... one way or another !

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08-26-2007 05:57 PM  10 years agoPost 11
oldfart

rrProfessor

Vancouver, Canada

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I hate to sound repetitive, but using the 1470KV 550+ motor, your 9T pinion will yield 1750 to 1800 on a TRUE 20C pack (e.g. FP or TP pack). I say "TRUE" because I have tested some that are 20C rated that are maybe 10 C at best!!!

For faster cyclic you need more rotor speed. For more rotor speed using the same power system, you have to only change the pinion. Earlier I mentioned going to a 10T pinion. That will yield a rotor speed of 1925 to 2000.

Of course your flight time will drop a minute or so and your average and peak amps will increase a bit also, but the 55A Century ESC handles it easily and more, so I would expect the CC45 can do so also.

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08-28-2007 07:43 PM  10 years agoPost 12
wrathofkhan

rrKey Veteran

LA, CA - US

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i just checked the specs of the 550+ ...

http://www.heli-world.com/detail.aspx?ID=8458

the max cont current is 45 amp. which means, 666 cont watts(45 x 14.8v)

i know yours is a light setup, but 666 watts to me seems very low for aerobatics. if you go higher cell count, the motor might not like it (at least that is what i am reading from the spec sheet). for my 5s setup, i go over 1000watts with light aerobatics

khan

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Century Radikal E640 - Swift 16 NX
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