Parkzone corsair !!

[Gmanjr]

I just picked up a parkzone corsair two days ago , and it is incredible. I was just trying to find out from all of you smater rc people, if there is a bigger battery, and if so one that you dont have to change out the ESC to run the battery. It came with the 1800 mah stock parkzone battery and that one gives great flight time. But i was hoping instead of buying the same one, if there is a bigger better one that just wont fry my ESC. Please help, would greatly appreciate it.

[NJSwede]

Well... Bigger can mean two things: More volts or more mAh (ok, it can mean more C as well). What are you looking to do? Increase flight times or make it go faster? You can always get a battery with more mAh (longer flight times) as long as it fits in the plane and isn't too heavy. My guess is that a 2200 mAh battery will fit just fine. If you go higher voltage (faster plane), you may have to change the ESC.

[Gmanjr]

yeah i just want longer flight times, not worried to much about speed right now, as i just got this plane and it is plenty fast for me now. cool so a 2200 lipo pack will be fine then, and i wont have to change anything. Do you think that most local hobbie shops would carry that kind of battery, or should i buy online ?

[NJSwede]

Ok, so you should definitely be ok with a 2200 mAh battery. My T28 goes from 7 minutes flying time with the stock battery to about 10 minutes with a 2200 mAh.

You don't need to buy it from ParkZone. Most of us here have had very good experiences with batteries from hobbyking.com. Turnigy is a good brand and they are a lot cheaper than batteries from ParkZone. There's one problem, though: They don't come with plugs that fit your plane, so you'll either have to solder on an EC3-plug (the plug that ParkZone uses) or use an adapter (check for them on eBay). Turnigy uses XT60-plugs, so you'll need an adapter from male XT60 to female EC3. Adapters *do* add some resistance, but for the fairly moderate current draw you have in a parkflyer, I strongly doubt you'll notice any difference. It's well worth the adapter/soldering as the Turnigy batteries cost a fraction of what you'd pay for a ParkZone battery. I've used them in my planes for a while now and I haven't had any bad experience at all.

This is probably the battery you want (it's actually a little beefier than what you need in terms of discharge rate, but that'll come in handy for your next more powerful plane that you'll inevitably buy... ). It even ships from the US warehouse, so you'll get it in about a week!

http://www.hobbyking.com/hobbyking/s...dProduct=14975

I hope this helps!

[xmech2k]

Isn't the Corsair amazing? It was my 2nd plane after my Apprentice, and I find it almost as easy to fly. Just the little taildragger thing going on there, which just adds to the fun for me. I'm almost done installing my retracts. Adds a bit of weight, but should be fun.

Also, I've always used 2200mAh batteries for her.

Welcome to the bent-wing club!

[Gmanjr]

Sweet guys, thx for all the help with power situation. That kinda sucks that the 2200 mAh battery doesent come with the appropriate connectors. Well soldering aint no sweat off my sack, iI think i can handle it. Official member of the bent wing club.

[Dizzy5]

2200mah 20 to 25c discharge rate batteries. Watch pulling high G maneuvers without beefing up the spar. I am able to make my wings wave at me if I pull out of a dive to fast. I'll be beefing up my wing soon. The Corsair is a really nice flying plane and still love it.

[Gmanjr]

My Battery is a pkz1031 11.1V 1800mAh (19.98 Wh)
continuous discharge up to 15c (27 Amps). If i use 20 to 25c discharge batteries wont that burn somthing up ?

[max2112]

Originally Posted by Gmanjr

My Battery is a pkz1031 11.1V 1800mAh (19.98 Wh)
continuous discharge up to 15c (27 Amps). If i use 20 to 25c discharge batteries wont that burn somthing up ?

Nope. The battery, ESC and Motor will be just fine. Your motor will not pull more juice than it can handle.

Just remember that we are talking about increasing milliAmps/hour (mAh) and discharge rates (25C). You have to keep the voltage the same. Raising the input voltage without verifying the manufacturer's specs will let the magic smoke out.

[JetPlaneFlyer]

Originally Posted by Gmanjr

My Battery is a pkz1031 11.1V 1800mAh (19.98 Wh)
continuous discharge up to 15c (27 Amps). If i use 20 to 25c discharge batteries wont that burn somthing up ?

In simple terms, the 'c' rating is just the maximum discharge that the battery can handle (multiply 'c' value by capacity in mAh, then divide by 1000 to get max Amp discharge rate). Providing you don't go to a higher voltage battery then all should be good as the battery will only deliver the Amps that the motor pulls from it.

In practice things are a little more complicated.... the larger higher 'c' battery should give you a bit more power because with higher c rated batteries (and larger mAh batteries) the voltage doesn't drop under load nearly as much as smaller/weaker batteries.. But the difference will be small so is very unlikely to cause anything to burn out.

Of course this small increase in power will be partly or wholly offset by the small increase in weight due to larger battery!.. there are no 'free lunches'.

Steve

[NJSwede]

When talking about batteries, there are typically three basic quantities we're interested in:

* Voltage, measured in Volts (V). In general, more volts means higher RPMs, but it gets really complicated when you involve the propeller in the equation. The voltage is determined by how many cells the battery has connected in series internally. Your Corsair uses a "3s" battery, which simply means 3 cells in series. All LiPo cells are 3.7V, so three cells will give you 11.1V. For now, we should leave the voltage unchanged.

* Discharge current, measured in Amperes (A). It's frequently referred to as "amp draw", because it's the number of Amperes we draw out of the battery at a given point in time. For brushless motors, there's a direct relationship between discharge current and torque. The more amps you draw, the higher the torque. Think of amps as the rate at which "energy" flows out of your battery. Batteries have a limit how much current they can put out before they overheat, explode or simply stop delivering a higher current. More about this when we discuss the "C-rating" below.

* Capacity, measured in Ampere Hours (Ah). This tells us how much energy (or "current over time" to be exact) we can pull out of the battery before it goes flat. A perfect analogy is the size of the tank for a glow or gas engine. The unit Ampere Hours deserves some explanation as well. If we have a battery that has the capacity of 1Ah, it means that if we constantly draw 1A (amp) out of the battery, it will last for 1 hour, if we draw 2A, it will last for half an hour and so on. You can't "burn" anything by increasing the amp hours, the same way as you can't ruin a combustion engine by installing a bigger gas tank. The batteries we deal with are typically rated in milliampere hours (mAh). 1Ah = 1000mAh, so your 1800mAh battery is a 1.8Ah battery.

So what's the C-rating? It's a measure of how quickly you can discharge a battery and it's closely related to the maximum amp draw and the capacity. "C" stands for "Capacity" an here's how it works: If you have a battery that's rates 1C, it means that you can draw as many amps as you have amp hours of capacity. So if you had a 2.2Ah 1C battery, the maximum current you're allowed to draw 2.2A. The batteries we deal with usually have C-ratings of 10 up to maybe 70. So a 2200mAh 20C battery allows you to draw 44A.

So the only quantity that's going to have any significant effect on how your motor runs is the voltage (which we agreed to leave unchanged). The capacity (mAh) determines the length of your flight and the C-rating determines how badly you can "torture" the battery in terms of drawing high currents.

I hope this helped and didn't just confuse you even more...

[Gmanjr]

Well if there ever was a detailed explanation, you hit it right on the head !. Yeah that helped greatly, and the analagies made it easier to understand from my standpoint. It looks like that turnigy battery link you sent me, the battery has the same hookup as my corsair. One square piece, and one circle connector. I could be wrong, but I was just noticing that. Oh yeah the battery charger that came with the corsair, is that able to charge the 2200 mah battery. Or do i have to get a new charger to componsate, the charger that came with it plugs into my car lighter 12v system.

[JetPlaneFlyer]

Your charger will work OK as long as the battery is the same voltage.. Higher mAh will just take a bit longer to charge.

[jimballs]

Hey, NJ. How about breaking down the motor lingo/numbers too. that was a great battery lesson, just need one for the motors. PLEASE! I keep seeing the turnigy c3536/???/???
didn't want to make up the other #'s, maybe you can fill it in. I have looked for the explanation, can't find it. And how does that compare to the pz 15 900kv stock motor. really want a little boost for the corsair. prop/pitch #'s would help too, but i can't say i've tried to find them without luck yet.

[xmech2k]

Welcome to WF, jim. Unfortunately, no one can entirely break down the numbers on motors, as every mfgr seems to have come up with their own way of doing it. I'd recommend this thread to get the best run down on that subject, and many more:

http://www.wattflyer.com/forums/showthread.php?t=31071

[jimballs]

OK, got a watts up meter, and 10.5x9 prop. Looks like clearance is good. Watts went from 225the to about 260. Will fly today. How hard can I push this motor? Up to 30the amps? That would be way stronger.

[jimballs]

well, i reinforced the wing, but i think it needs more. adding more cf now. installed 25 size 870kv eflite motor, 60 amp esc and 4s 3200mah, with 10.5x9 prop WOW!!! over 700 watts, i shut it down because it was kind of scary. maiden, unlimited verticle climb, and scary speed. i have pix of the wing reinforcement, and motor mount i made, but not sure how to upload yet. tomorrow i will test again with a little stronger wing, i think. scared to pull out of a power dive. i will work up to it.