Show Us Your Hoverthings FPV Frame - Page 98 - RC Groups
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Oct 31, 2012, 03:07 AM
Registered User
Talk to me about the latest thoughts on 3S vs 4S for this frame. Currently, I am running 4S on mine with the 750kv Turnigy NTM motors. I have a full FPV setup on mine. ready Made RC 1.3G video gear, EzUHF, EzOSD, Naza, etc. The thing flies fantastic. However, I don't get very long flight times. The biggest battery I can fit in the slot, is a 2800mah 4S battery. When I had all of this stuff on my VC-450, I was running 3S with a 5000mah battery underneath. I could get 12 minutes of flight time with those batteries.

So, I was thinking of switching my FPV frame back over to 3S and running the 28-26 1200kv NTM motors. I could fit a 5,000 or even a 6,000mah 3S nano tech on this thing. A 6000mah 3S nano-tech is only 6oz heavier than my current 2800mah 4S GeForce batteries. I realize the motors would work harder than my current ones, but my goal is to get more flight time! I live in Alaska. Motors don't get hot here, especially this time of year! I don't do any kind of aerobatics with my FPV quad. Am I missing something here or is 3S a better choice for more flight time?
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Oct 31, 2012, 10:00 AM
Radd Graduate '06
Mochaboy's Avatar
Quote:
Originally Posted by KC10Chief
Talk to me about the latest thoughts on 3S vs 4S for this frame. Currently, I am running 4S on mine with the 750kv Turnigy NTM motors. I have a full FPV setup on mine. ready Made RC 1.3G video gear, EzUHF, EzOSD, Naza, etc. The thing flies fantastic. However, I don't get very long flight times. The biggest battery I can fit in the slot, is a 2800mah 4S battery. When I had all of this stuff on my VC-450, I was running 3S with a 5000mah battery underneath. I could get 12 minutes of flight time with those batteries.

So, I was thinking of switching my FPV frame back over to 3S and running the 28-26 1200kv NTM motors. I could fit a 5,000 or even a 6,000mah 3S nano tech on this thing. A 6000mah 3S nano-tech is only 6oz heavier than my current 2800mah 4S GeForce batteries. I realize the motors would work harder than my current ones, but my goal is to get more flight time! I live in Alaska. Motors don't get hot here, especially this time of year! I don't do any kind of aerobatics with my FPV quad. Am I missing something here or is 3S a better choice for more flight time?
Just to share my experience, when I was selecting components, I specifically went 3S for higher capacity and lower weight at the expense of thrust. I would have thrown a Zippy Compact on there if they'd had that in stock.

With a full FPV payload and a 5000mah battery, I'm pushing about 1600 AUW and with 8x4 props - this thing is a pig powered by mosquito wings. I flew this at 1300g and obviously, lighter 300g it was far more nimble.

I was doing a tuning run yesterday and I got somewhere in the neighborhood of 16-18 minutes (lots of low amp activity). I won't be winning any speed contests with this rig, but it's performance has been acceptable.

Some of the guys I fly with fly with 3300 mah batteries on similar kv/weight setups and they get around 8 minutes. My only issue with the Nano Techs and even A-Spec options is the power to weight ratio. If my intention is a lot of low amp runs, all that extra voltage overhead is wasted and that comes at the expense of weight and consequently flight times.

What I'll be looking at in the future are these new crop of ultra low kv disc type motors with big fat props, but those are pretty spendy right now at nearly 3x the cost of an NTM 1200.

My 2cents

Mocha
Oct 31, 2012, 12:28 PM
Registered User
Yeah. That's what I'm thinking. I don't need this one to be super nimble or really fast. I just want more flight time.
Oct 31, 2012, 08:29 PM
Registered User
Quote:
Originally Posted by Mochaboy
Finally - after a month of reading, waiting for shipments, and some long long build sessions...

I can finally chase the trick or treaters!
That should be fun
Oct 31, 2012, 09:43 PM
Multi rotors=No Paycheck left
SDSURFnGLIDE's Avatar

my HT-FPV ghoul


here is my halloween quad...mimimal..but at night it looks cool...video to follow
Nov 02, 2012, 03:58 PM
32 ft/sec^2 sucks
yoadrian's Avatar
Awesome build. Did you get any?
Nov 02, 2012, 04:27 PM
Multi rotors=No Paycheck left
SDSURFnGLIDE's Avatar
Quote:
Originally Posted by yoadrian
Awesome build. Did you get any?
Thank you...unfortunately i didn't get to fly it where there were trick or treaters..i did fly it at a party and it was a big hit...got the usual questions...did you build that yourself...how high can it go...etc.....
Last edited by SDSURFnGLIDE; Nov 03, 2012 at 10:43 PM.
Nov 03, 2012, 11:29 AM
Fly safe, fly often!
Buzz_Man's Avatar
Flew mine for the first time today!

I purchased this flight controller, motor, ESC's and props from a guy here at rcgroups (classified's) a while back - everything seems to be just great - the maiden was "uneventful" which is exactly what I was hoping for.
Nov 03, 2012, 11:56 AM
Gary
glmccready's Avatar
Buzz: Great news! It is always nice when you build something and it works on the first try!
Nov 03, 2012, 02:19 PM
Fly safe, fly often!
Buzz_Man's Avatar
ht-fpv quad flight 02-Desktop (0 min 24 sec)
Nov 03, 2012, 04:09 PM
'FPV'er...not a "LOS'er
Vantasstic's Avatar
I've posted my HT-FPV frame for sale here: https://www.rcgroups.com/forums/show....php?t=1760339 . It's been a wonderful frame. I wanting to move into a system with a gimbal as my next step in 'copter FPV. The frame is available in different 'package' combinations. Feel free to PM me for questions.
Nov 06, 2012, 03:06 PM
Registered User
Quote:
Originally Posted by SDSURFnGLIDE
Thank you...unfortunately i didn't get to fly it where there were trick or treaters..i did fly it at a party and it was a big hit...got the usual questions...did you build that yourself...how high can it go...etc.....
Why do people always want to know how high it can go?
Nov 06, 2012, 04:01 PM
Multi rotors=No Paycheck left
SDSURFnGLIDE's Avatar
Quote:
Originally Posted by epyonxero
Why do people always want to know how high it can go?
I don't know! Haha...that has to be the most annoying question ever...i just tell tell them it will go as high as i can see and then some
Nov 06, 2012, 04:23 PM
q {bld(); fly(); brk(); q();}
The Recursion's Avatar
Since mine has a 1/2 throttle hover, I tell them it can go up to an altitude where the air thickness is 1/2 of sea level, since full throttle would be hovering.

Last edited by The Recursion; Nov 06, 2012 at 05:59 PM.
Nov 06, 2012, 05:40 PM
Multi rotors=No Paycheck left
SDSURFnGLIDE's Avatar
Quote:
Originally Posted by Exploding Fist
Since mine has a 1/2 throttle hover, I tell them it can go up to an altitude where the oxygen thickness is 1/2 of sea level, since full throttle would be hovering.

Haha...nice


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