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Home✈️Aircraft🚁HelicopterThunder TigerRAPTOR 50 › Which RX Lipo?
08-20-2008 02:51 PM  12 years ago
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Vertiviper

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Which RX Lipo?
I'm looking to change over to a lipo as a rx battery on my Titan. I have a 4.8v setup. Do you guys have any reccommendations?

thanks!
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08-20-2008 03:04 PM  12 years ago
RobRoy

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Huntsville, Alabama

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I use the align 2in1 with the align 1900 2cell lipo, works great for me, I get 5 flights, then charge in 30min or less, and back in the air again.Ignorance is curable, stupidity is for life.
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08-20-2008 03:10 PM  12 years ago
Vertiviper

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What is the 2in1?
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08-20-2008 03:15 PM  12 years ago
RobRoy

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It is a voltage regulator/glowdriver/switch combo. Very slick unit.

http://www.align.com.tw/shop/produc...roducts_id=2273
Ignorance is curable, stupidity is for life.
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08-20-2008 08:19 PM  12 years ago
Vertiviper

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Are these 2 in 1's the same?
http://www.readyheli.com/Voltage_Regulators_s/269.htm

Which one would best suite my Rap Titan?
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08-21-2008 02:15 AM  12 years ago
jschenck

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La Vista, NE.

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The HE50H10 or HE50H11 (with battery) will work great. I have about a year running an Align 2n1 on a Raptor, though mine is the previous generation unit.

One of the nice benefits to this is the ability to hit the glow plug lighter button when walking out to the flight line. Helps prevent the runway detector from killing your engine just as you set down the heli.
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08-21-2008 02:24 AM  12 years ago
Vertiviper

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/\ very helpful.

I have a 401/9254 so i assume I would need a stepdown for the servo..AND the gyro? One for each?
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08-21-2008 02:27 AM  12 years ago
jschenck

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La Vista, NE.

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No - just one stepdown diode. I run mine between the gyro and the RX but you could run it between the gyro and the servo if you wanted. The Gyro can handle 6V just fine but that's a bit hot for the 9254.

The most important thing with the tail servo is to feel the case after a flight. If it's hot then something is wrong, find it and fix it since a hot servo will not last long.
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08-21-2008 02:30 AM  12 years ago
Vertiviper

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What's the average # of flights you get? Does the igniter replaces the glow driver?
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08-21-2008 02:43 AM  12 years ago
jschenck

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La Vista, NE.

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I get 4-5 flights before it goes into solid yellow on the LED indicators. There is plenty of reserve at that point but I charge anyway. You could get more flights by going to a higher capacity lithium pack. This is a great place for LiIon such as Froemco packs BTW.

Yes, this replaces the glow lighter. That's what makes it a 2 in 1 - it's a regulator for the radio AND an on board glow lighter.
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08-21-2008 02:47 PM  12 years ago
Vertiviper

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If you had the choice would you opt for the lipo or liIon battery?
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08-21-2008 02:54 PM  12 years ago
RobRoy

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I would go for the lipo, it may not hold up as well in a crash, but it weighs less.Ignorance is curable, stupidity is for life.
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08-21-2008 03:03 PM  12 years ago
Yug

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UK. Herts

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Li-Ions such as Duralite or Relion are very reliable and robust but aren't able to deliver high currents edequately for helis equipped with servos such as 8717s, so 2s2p packs are required which adds a little weight. Other setups using more standard servos work fine on 2s1p although this therefore doesn't benefit with redundency when a cell goes down.
LiPos on the otherhand can deliver substantially higher currents so they're good for any setup. Main disadvantage is their lack of robustness in the event of a crash but as in Li-Ions, the redundent aspect of 2s2p still applies.
Most of the major brands seem to perform reasonably well although some still insist on using crap thin guage wiring (as do some regs) with the result that you get some voltage drop. Just replace wiring, bung a deans on and all will be well.
Vegetable rights and Peace
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08-21-2008 08:26 PM  12 years ago
Vertiviper

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I think i'm pretty much set on going for a lipo. I don't think i'm going to get the 2 in 1, but either way I will need a step down.

As far as a good size Lipo..what are some good options?
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08-21-2008 09:56 PM  12 years ago
w.pasman

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Netherlands

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I'm using 8x700 cells in 4P2S that fit in exactly the same space as 4AA cells. Gives me about 3Ah. Using Duralite regulator. Good for 7 flights with good margin. And because the average current is pretty low, they hardly detoriate over time. I think I am on the third year with this pack.
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08-22-2008 02:57 AM  12 years ago
TooBizzy

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Georgetown, Ohio USA

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Another alternative is A123 cells. I run 2s1p (2300ma) in my Raptor 30 and 50. I also have 2s2p in my Predator Gasser. (4600ma).

I usually use about 300-400ma per flight on my 30 and 50. You can fly easily 3-4 times before needing to recharge. But thats the great thing about A123's. You can charge them at 20 amps and be ready to go again in 10 minutes or less.

Full charge (2s1p) is reached at 7.2v. (3.6v per cell) Voltage will drop quickly to about 6.8-6.9v where it stays for about 90% of the discharge. I run everything but the gyro and tail servo straight off these cells. For the gyro and tail, I run the Spektrum vr5203.

Hope this gives you some other alternatives to think about!
P-Gasser Se, Raptor 50 Se Hyper, Raptor 30v2, Trex450se, 3dx450...
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