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Home✈️Aircraft🚁Helicoptere-AlignT-REX 450 › Trex 450 Pro 6S Mod - Trex 450L Dominator 6s and new Trex 470LM 6s Dominator
05-22-2010 02:30 AM  9 years ago
NQNA

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Night to Day.. 3s can give you the same head speed but will not give you the flight time. I get 3 mins on 3S. 5 Mins on 6S and the battery, motor and esc are cool to the touch when you finish the flight.

I should say that my older Trex helicopter is a 4S ship. Neu 1107-2y (11T)and Medusa 2800 (13T). I think that the 6s blows the 4s away. With 4S (2200mah) I get about 5 mins of flight.. but the battery is smoking hot (140F with the head speed in 3450 range rpm). Also the head speed is more consistent throughout the flight on 6S. The power doesn't drop off as fast.

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05-22-2010 05:37 AM  9 years ago
NQNA

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Try this link to the batteries. $8.95 each..

http://www.hobbycity.com/hobbycity/...?idProduct=9272
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06-13-2010 02:11 AM  9 years ago
NQNA

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My OUTRAGE EPT XL 1700kv motor gave up the ghost.. Some of the magnets came loose and moved inside the case.. Strange grinding sounds and a wobbling motor case.. I think my Outrage was the older motor style.. At least it only cost $29.95..

I've already ordered a Scorpion HKII-2221-2010KV for it's replacement.. I have a 14T on it but might try a 15T..

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06-13-2010 03:53 PM  9 years ago
jason46

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MI

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With 4S (2200mah) I get about 5 mins of flight.. but the battery is smoking hot (140F with the head speed in 3450 range rpm).
Must have been poor quality/defunct battery or inadequate (low c-raiting) causing the cells to generate heat, should be able to achieve that with a good 4S. Do you remember what was put back into the 4S after the 5min flight, maybe it was overextended at that head-speed for 5mins.

I was curious if the cells could be connected in series with adapters then later charged individually as a 3cell.
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06-13-2010 04:56 PM  9 years ago
NQNA

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Yes, Jason.. you can have two 3S packs and then use a series adapter plug to create the 6S pack.

And yes my battery is very old .. an old TP 2100 Mah 15C-24c burst pack (it has a manufacture date of 01/2006.. LOL).. the 13t on the Medusa really pushes that pack setup. I also have a newer TP Extreme V2 2200 Mah 25c-50c burst.. It completes the flight with a slightly lower temp.

When I ran these batteries with a smaller pinion (9 or 10 on the Neu, 11 or 12 on the Medusa) the temps were quite a bit lower.

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06-15-2010 04:48 AM  9 years ago
NQNA

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Here is a flight record from the Ice 50 on the new Scorpion 2010kv on a 13t. The 13t worked great. I set the Governor for 3300 rpm and it was really locked in..

Here is the main setup of the Ice 50

I put 870 mah and 878 mah back into the 2 different 1300 mah battery packs after a 4 minute flight. Looks like a 4 min 40 seconds to a 5 minute flight will work.
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06-16-2010 02:32 AM  9 years ago
jason46

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I'm curious why you would use a motor with such a high KV rating with 13tooth pinion and 6 cells. I calculate you would be using roughly 50% throttle with that setup for a headspeed of 3300rpm. Doesn't efficiency diminish with lower throttle settings, so wouldn't it make sense to shoot for a throttle around 80-90% with that target headspeed.
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06-16-2010 04:06 AM  9 years ago
NQNA

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Jason46

If you look at the graph of the Ice 50 you will see the motor power output. It is around 80 to 97% with a few 100 marks reached. Absolute maximum head speed at zero load and at 25.2 volts is 3951 and minimum head speed at zero load and 22.2 volts is 3481. The 13t gives this setup head room for the governor to work on the Ice 50. If I dropped to a 12t the setup would only be able to give a head speed of 3213 under zero load. I'm shooting for a constant head speed throughout the entire flight with no battery induced drop off..

I could bump the head speed up a bit but looking at my previous Outrage 1700 Kv graphs (running a throttle curve and mixes) the head speed was normally below 3300. After the first 2 flights with the Scorpion the governor mode totally blew away the normal throttle curve mode. - Locked in head speed..
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06-23-2010 04:07 PM  9 years ago
Rogman88

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West Monroe, LA

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Here's a compare/contrast of batteries.
Are the turnigy's too tall? If this is why you are cutting down the battery tray then maybe the Rhino 1250 3S Pack size: 99x34x17mm is a little longer and not quite as tall.
http://www.hobbycity.com/hobbyking/...?idProduct=9323

Compared to the Turnigy 1300 3S Pack Size: 71 x 34 x 24mm
http://www.hobbycity.com/hobbyking/...?idProduct=8936

What do you guys think? Rhino is longer and not quite as tall overall verses turnigy. 50mah less and negligible 3g less in weight.
Would a pair of Rhinos up front fit under the canopy better? At over half a centimeter tall on a battery tray would you be able to shove a pair of Rhinos under there easier.

Ordered my Scorpion 2221-2030kv last night to go with my Ice 50. Gonna order some batteries tonight but wanted to get some input first.

Edit: for comparison sake: Typical turnigy 2200mah 3S battery is roughly 104x36x25mm

99X68X17 Pair of Rhinos

71X68X24 Pair of Turnigy

Summary: Rhino/turnigy same width when setup as pictures above but Rhinos longer and less tall under the canopy.
High Voltage just works better
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06-24-2010 01:48 AM  9 years ago
NQNA

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Rogman88

IMHO the frame mod is a very good idea.. It doesn't take much work or time to complete it and it gives a lot more room for the batteries..

I really like the Turnigy batteries... The numbers and the flight performance seem to support that they out perform the Outrage packs.. For the price they are a winner. I've never tried the Rhinos..
Outrage Battery 220.5 Grams Total Cost $56.00 1300 Mah
Turnigy Battery 224.8 Grams Total Cost $20.00 1300 Mah
The balance is perfect with either pack.. They both come out after flights with temps right around 100 degrees..
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06-24-2010 03:29 AM  9 years ago
Rogman88

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Great! I'll get a pair of each and will post what I find. I'm gonna put this on my 450SEV2 so mod isn't gonna help me I guess. I hope I can still cram these babies under the hoodHigh Voltage just works better
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06-24-2010 04:38 AM  9 years ago
NQNA

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Here are some pics of my current Scorpion 2010KV motor..

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06-27-2010 06:10 PM  9 years ago
NQNA

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Here are some new Ice 50 log files with the new Scorpion motor installed.. It really purrs.

Outrage battery

This is with the Turnigy battery.. Still the best performer.. comes off cooler.. more volts
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06-30-2010 03:40 AM  9 years ago
kimber1911

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philippines

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I been using a 6 cell set-up with a medusa 1900 kv. and outrage battery 6 cell 1300 mah, since the outrage release their battery. What i did on mine is I removed the battery tray and just sit the battery on the plastic base. You don't have to modify your canopy. Right now, I'm using 2 turnigy 3 cell 1300 mah. and a 335 mm blade. It feel like a bigger heli...trex450,eraptor550, jrvibe90,knight3D50,SDX50
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06-30-2010 03:57 AM  9 years ago
kimber1911

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For those who are using a v1 and v2, heres how I install my battery

trex450,eraptor550, jrvibe90,knight3D50,SDX50
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06-30-2010 04:01 AM  9 years ago
NQNA

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Kimber1911 -( I have a few of them)

What temp does the Medusa hit after the flight? My 4S Medusa 2800 is as high as 158..
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06-30-2010 04:12 AM  9 years ago
kimber1911

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I did not check the temp, cause I know that medusa run hot. I'm using this motor since outrage release their battery( i don't know when), until now it still run great, especially with a 335 mm blade, it float in a air better.trex450,eraptor550, jrvibe90,knight3D50,SDX50
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07-06-2010 09:57 PM  9 years ago
lightningrc

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NQNA can you help me please ?

Im just building a Trex 450 pro , ive just ordered the Scorpion 2010kv , an ice 50 esc and 2 lots of 3S 1100mah lipos to run as 6S.

Ive ordered a 13 tooth pinion .

But whats the score with not running at 100% power ?

What do you do just reduce the throttle rates after set up , other wise I suppose if you reduce the rates before setting up the ESC it will see say 80% as full throttle.

Whats the reason for not using a smaller pinion and running a flat line in idle up at 100% ?

Will the motor over rev the maxium ?

Thanks Steven
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07-07-2010 12:55 AM  9 years ago
NQNA

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lightningrc..

Running a flat 100% throttle curve with the 13t might be catastrophic for the helicopter.. either the main blades or some tail rotor component might fail. With no load and a fully charged battery pack you would see about 3951 rpm.. That's probably too high for one or all of the components. (I am running a headspeed of 5200 rpm on my Trex 250 but that's a 250..) I'm running the 13t with the Castle Ice 50 so that even with a flat battery at the end of the flight I will still have my selected rpm of 3400. With a flat pack at 22.2 volts the setup will still give you 3480 rpm.

With a 12t and a fresh pack, your max rpm would be around 3600 and 3200 range with a flat pack.

The rpm with my 13t setup is so stable and constant with no drop off at the end of the flight.. It's just amazing..

Sample headspeed calculations

Flight Data from 13t Flights

Hope this helps you some!
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07-08-2010 01:31 PM  9 years ago
BOOGIE

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LAFAYETTE LA

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Guess I will try 6s im not happy with 4S. Great info!MSH USA / Lynx Heli Innovations
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Home✈️Aircraft🚁Helicoptere-AlignT-REX 450 › Trex 450 Pro 6S Mod - Trex 450L Dominator 6s and new Trex 470LM 6s Dominator
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