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72" Extra 330SC

SnowDog

SnowDog

Moderator
2S1800 up to 2s2800 should be fine for a full day of flying.

Just make sure you check the amount used after each flight and then you can gauge your per flight usage pretty accurately.
 
gyro

gyro

GSN Contributor
I run a 2s LiPo in mine currently. I've used a regular 2s2200 pack in the past, but lately I'm trying the 2s3600 receiver pack. It's only a few grams heavier and I can fly more flights between charges.

I'm also running a regulator for 6.5v output to my servos, SA-1256TGs

SnowDog said:
2S1800 up to 2s2800 should be fine for a full day of flying.

Just make sure you check the amount used after each flight and then you can gauge your per flight usage pretty accurately.
Click to expand...


I disagree about the full day... For me, 1800mAh will last for about 30-40 minutes of flight time at best, so depending on how long your flights are, you will need to charge more frequently.

I agree you should check voltage every few flights just in case.
 
SnowDog

SnowDog

Moderator
Good point....I guess I should have clarified "full day of flying" since my "full day" is small compared to most of you guys who are at the field from sun-up to sun-down :)
 
dskuro95

dskuro95

100cc
maxx4wd said:
Ok guys - I have decided to run a receiver pack on this larger electric bird - for those of you that run them, how do you wire it up? what size Rx pack (s) do you run and how many flights do you guys get? Do you guys run a bec (or voltage regulator)? I'm thinking of buying a new futaba 14sg radio with a HV Rx - and the plane already has 4 Hitec 7975hb (guessing 6.0v max) - not sure if these are big enough for the tail though....any suggestions would be great - thinking maybe a 1600mah life (good for 4 flights)
Click to expand...

I use a LiFe pack. 2s 2000. I get 4 flights out of it.
 
maxx4wd

maxx4wd

50cc
ok so based on the feedback from everyone - I think I'm going to get the following:

ZTW 12A UBEC
High Quality Red Label 2S1P 6.6V 2300mAh Receiver Pack

Does this sound like a reasonable setup - set the ZTW to 6.5v (6.0v if the servos can't handle it - but I'm guessing they probably can since Hitec usually leaves a little wiggle room)

Then I can just get rid of my CC BEC Pro that is inline with the ESC (or should I just use the CC BEC Pro inline with the reciever pack? and not buy the ZTW one which looks much lighter and smaller)

If I'm missing something let me know as this is the first time running a reciever pack for me and I just want to get it done right the first time....
 
dskuro95

dskuro95

100cc
maxx4wd said:
ok so based on the feedback from everyone - I think I'm going to get the following:

ZTW 12A UBEC
High Quality Red Label 2S1P 6.6V 2300mAh Receiver Pack

Does this sound like a reasonable setup - set the ZTW to 6.5v (6.0v if the servos can't handle it - but I'm guessing they probably can since Hitec usually leaves a little wiggle room)

Then I can just get rid of my CC BEC Pro that is inline with the ESC (or should I just use the CC BEC Pro inline with the reciever pack? and not buy the ZTW one which looks much lighter and smaller)

If I'm missing something let me know as this is the first time running a reciever pack for me and I just want to get it done right the first time....
Click to expand...

If you use a LiFe pack, you do not need an Ubec. It will be fine straight into the receiver. All hitec servos I have used, 6.6volts is fine. I like to get rid of as many failure points as possible. So try out going straight into the receiver.
 
maxx4wd

maxx4wd

50cc
dskuro95 said:
If you use a LiFe pack, you do not need an Ubec. It will be fine straight into the receiver. All hitec servos I have used, 6.6volts is fine. I like to get rid of as many failure points as possible. So try out going straight into the receiver.
Click to expand...

Awesome - I saw the 6.6v nominal rating and wasn't quite sure...just saved 30 bucks...:)
 
gyro

gyro

GSN Contributor
One thing to be cognizant of with life, is that the voltage drop when the pack gets low is dramatic.
You really want to slowly work up to finding out how much you can use before charging.

I recommend two flights, then charge and see how much you put back. Then ad another flight, repeat the process.

Good luck!
 
maxx4wd

maxx4wd

50cc
GYRO said:
One thing to be cognizant of with life, is that the voltage drop when the pack gets low is dramatic.
You really want to slowly work up to finding out how much you can use before charging.

I recommend two flights, then charge and see how much you put back. Then ad another flight, repeat the process.

Good luck!
Click to expand...

Yeah - I pretty much do that with any battery, great advice though. I'm thinking I won't drop the battery below 50%-60% capacity before a charge - I will probably only fly this plane maybe 4 flights a field visit (maybe 6 if I'm lucky) so there should be ample time for charge cycling. I'm also running probably smaller servos then I'd like to so keeping the voltage up is pretty much a must.
 
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