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Home✈️Aircraft🚁Helicoptere-AlignT-REX 500 › 500x flight times and batteries.
10-31-2018 05:29 PM  36 months ago
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NQNA

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USA

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500x flight times and batteries.
I just ordered a 500x Super Combo. Any suggestions on battery pack size and their flight times for 3d style?
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10-31-2018 11:06 PM  36 months ago
ICUR1-2

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Ottawa, Ontario

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The largest battery will be a 6s3000 mah,, check the manual for dimensions. Depending on how hard you push it you can get from 6 minutes to as low as 3.spending time, paying attention
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11-06-2018 02:34 PM  35 months ago
iyoy

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Bacolod City, Philippines

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Agree
I’m with ICUR on this
iyoy
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06-03-2020 06:03 PM  16 months ago
Richardmid1

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Leeds, England

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500x can take upto 6s 3300mah packs. For longer flight times switch to 5s 3700mah and run 100% throttle in IU.60% of the time, it works every time!
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09-08-2020 07:49 PM  13 months ago
hhart

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San Jose, CA

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On the T500X, I use 6S 3300mAh which last 3mnts of flying. I fly somewhat hard 3D. A buddy setup his for hovering and lazy loop and roll and is able to get up to 7mnts flying.
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09-09-2020 03:43 PM  13 months ago
Richardmid1

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Leeds, England

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hhart On the T500X, I use 6S 3300mAh which last 3mnts of flying. I fly somewhat hard 3D. A buddy setup his for hovering and lazy loop and roll and is able to get up to 7mnts flying.
What is your head speed or throttle %?
60% of the time, it works every time!
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09-10-2020 06:28 PM  13 months ago
hhart

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San Jose, CA

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My Trex 500XT uses HobbyWing ESC with fan (I found this is important) calibrated with +/-100% range at 50%. With the 6S setup, my IU1/2 is 80% flat curve with Gov-Store. So far, the motor and ESC are running cool. I do back to back to back flying for 8 packs without any cooling period. Since the rpm is fixed in all idle up, I use IU1/2 (bank1/2 in FBL) for getting the cyclic response (Agility/Style/Gain/Optimizer/cyclic feed-forward, paddle-sim)

If you asked me, I would hate to lower 1 cell to 5S setup and running 100% as the rotor rpm varies by the voltage drop, defined by the battery I-V and impedance. End result of varying rotor rpm = varying cyclic response, cyclic start-stop, collective power. This is very annoying flying characteristic that I vigorously mitigate.

Hope this help, regards,
hhart
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09-10-2020 06:57 PM  13 months ago
NQNA

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USA

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I am using 6s 3000mah Pulse batteries. HS is set at 3200 rpm on the Vbar Neo governor. My flight timer is set at 3:20 minutes.
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09-10-2020 09:05 PM  13 months ago
hhart

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San Jose, CA

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NQNA, I'm still using my old radio w/o telemetry. I do use the VBAR Mini/Blueline/Neo, their FBL performance is phenomenal in pirouette. Unfortunately, my old Miniature Aircraft tachometer with the see through window broke a decade ago. From there on, I fly all helis by ear, feel the torque, collective and cyclic response.

Fortunately, the Hobbywing V4 (not any version below) has a very capable governor modes with P and I adjustment. These 2 parameters are enough to quench the rpm sag or oscillation in a fast load-unload situation.

Regards,
hhart
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11-06-2020 04:02 PM  11 months ago
Richardmid1

rrProfessor

Leeds, England

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hhart If you asked me, I would hate to lower 1 cell to 5S setup and running 100% as the rotor rpm varies by the voltage drop, defined by the battery I-V and impedance. End result of varying rotor rpm = varying cyclic response, cyclic start-stop, collective power. This is very annoying flying characteristic that I vigorously mitigate.
The varying rotor rpm is minimal if you have good collective management and there is no difference in cyclic speed and cyclic start stop behaviour with FBL. Electric helis were flown like this for years, some actually prefer it for on the deck 3D as it is more predictable. Nitro helis also fly this way no matter how good the governor is. I would not be happy with 3.5 minutes or less flight time, although 3200rpm is a bit silly on 470mm blades (although I'm sure it's fun!). Anyway, the 500X would still govern OK to 2500 rpm on 5s and you could still do some pretty hard 3D at that speed.
60% of the time, it works every time!
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11-06-2020 07:24 PM  11 months ago
hhart

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San Jose, CA

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Hi Richard,

You are completely missing the point on my earlier posts (I attached below).

With 5S, the system working range is fully charged 21V to empty 17.5V. When running 100% throttle, the head rpm would drop (full to empty battery) ~500 rpm (1600kv/11.17 ratio) while your pitch load stays at 12 degree.

Now, if your goal is to squeeze 7 minutes flight on 5S while sacrificing the head rpm drop in the process, in this case 500rpm delta (3000/21V to 2522rpm/17.5V). I'll say go for it and I am happy for you!

Regards,
hhart

>>If you asked me, I would hate to lower 1 cell to 5S setup and running
>>100% as the rotor rpm varies by the voltage drop, defined by the
>>battery I-V and impedance. End result of varying rotor rpm = varying >>cyclic response, cyclic start-stop, collective power. This is very >>annoying flying characteristic that I vigorously mitigate.
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11-09-2020 12:04 PM  11 months ago
Richardmid1

rrProfessor

Leeds, England

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It would not be a linear drop off of voltage through the flight. The flight would not start at the full 4.2v/cell, more like 4.0/cell or less and would only drop off significantly (noticeable) in the last minute or so, which is also advantageous in case you forgot to start your timer! (my TX doesn't have auto timer start!).60% of the time, it works every time!
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11-09-2020 10:29 PM  11 months ago
hhart

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San Jose, CA

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Richard,

If you can take ~500 rpm drop from beginning of the flight to the end, I am happy for you! But the fact of the matter is, it is still not a constant rotor rpm setup. There is no headroom.

On another setup, my flying buddy and I had 6S setup on his Goblin570. I had his machine setup to just hovering modes (he likes to do just that), 6S 5000mah could do 14 minutes flight with plenty of juice left on the pack.
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11-10-2020 12:24 PM  11 months ago
Richardmid1

rrProfessor

Leeds, England

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Like I said it wouldn't be a 500 rpm drop, more like 300 and I would happily take that if it means going from 3.5 minute flights to 5 minute flights. Same flights BTW, same fun, just more of it per pack!

I've never managed to get any setup, even hovering, close to 14 minutes let alone have lots of capacity left! You will have to share the secret, or better yet, a video?

I once got my Blade 360CFX to do 12 minutes gentle hovering around using a smaller pinion and a seriously reduced throttle curve (40% if I remember) and the pack was down to like 15% at the end!
60% of the time, it works every time!
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11-10-2020 06:14 PM  11 months ago
hhart

rrApprentice

San Jose, CA

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>>I've never managed to get any setup, even hovering, close to 14 minutes >>let alone have lots of capacity left!

You definitely has a lot of figuring out to do with your own setup. and different way of thinking needed to achieve that. But below are the suggestions:

1. Use Governor function
2. Enabled Free wheeling
3. Rev up the head rpm that's just enough (use soft damper for hovering)
4. Target for hovering current less than 14A. Time your flight and note the charge that is put back to the batt.

Have fun and regards,
hhart
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11-11-2020 12:29 PM  11 months ago
Richardmid1

rrProfessor

Leeds, England

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hhart 1. Use Governor function
2. Enabled Free wheeling
3. Rev up the head rpm that's just enough (use soft damper for hovering)
4. Target for hovering current less than 14A. Time your flight and note the charge that is put back to the batt.
Using governor, active free wheeling or not, will not be any more efficient than using throttle curves.

When I tried it with my Blade 360CFX it was with the stock 6s 1600mah pack and the pinion was the smallest I could find. If I had run it on 3s 2600mah pack at 100% throttle I could have probably got nearly 20 minutes!
60% of the time, it works every time!
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11-11-2020 07:52 PM  11 months ago
hhart

rrApprentice

San Jose, CA

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Richard,

I reported to you the flight time, set-up, power consumption. It is up to you to figure out and benchmark per your baseline for the pros and cons.

Happy flying and regards,
hhart
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