$400 to spend, any ideals
- Thread starter griz
- Start date
HDtallrider
Well-Known Member
I don't see a 3s listed so I'm guessing you did some calc's to come up with that figure. The 4s 465kv with 18x6.1 prop produces 920grams of thrust at 37.5% throttle while drawing only 4.3amps at a lb/hp efficiency ratio of 24.01. The 6s 465kv with 18x6.1 prop at 37.5% throttle produces a whopping 1850grams of thrust while drawing 8.4 amps at a lb/hp efficiency ratio of 16.44. The lifting power increased dramatically at the expense of flight time. I guess what I'm trying to say is that from what griz described he'll have a AUW of about 7000grams without the boat. The 4s battery will give him more than enough power to hover at a little under 50% power with very good flight times for video. When he flies with the boat the heavier 6s batteries will easily handle the additional payload but with a shorter flight time. He won't even have to change props. I was trying to give him a simple solution for changes in payload and types of flying. Make sense?
Your correct, I figured that 4S and if it the data was taken at 25% throttle, that would leave 1S, take that to three S for some overhead, and you have the figures I came up with.
HDtallrider
Well-Known Member
Wow! You have a BIG brain!! Holy crap! Doing that exercise never entered my little pea brain.
HDtallrider
Well-Known Member
Hey griz. Let's jump back on controllers for a minute. Relating to the discussion that GJH and I were having about voltage/ motors etc. Being able to swap from one size battery to another is a great way to add to the T960's flight envelope. With many controllers this involves hooking up to a computer and making adjustments to accommodate the additional power and weight. The reason I keep bringing up the SuperX pro is you can do that from your Tx in about 30 seconds. It's as simple as turn on the Tx. Move the sticks to center(50%). Plug in the battery connector. Toggle the mode switch rapidly 3 or 4 times then stop. The controller indicator will flash a few times then go solid. Unplug the battery and repeat the steps with the sticks full up(100%). Unplug the battery. Move the throttle stick to full back (0%). Plug the battery in and you're all set. Your hexa will hover at 50% throttle even if the motors are only drawing 40% and they will put out 100% when you move the throttle all the way up. The altimeter and barometer are accurate enough that they will read a centered throttle as hover and adjust the power accordingly. Even if you use the auto take off feature it will pop up and just hover about 5 feet in the air. Simple huh?
So far I have only about 425 dollars in the frame. In total im looking at around 3500 dollars , maybe a bit more spread out over about 6 months .
HDtallrider
Well-Known Member
That budget will allow you to go with the good stuff. No need to cut corners and settle for less on your end goal.
KDE 4215 motors with 75 amps ESC and KDE props . The controller is whats giving me a headache . Want a good one but don't want to go back to collage to learn how to program It . The super X sounds good but the naza has a long proven track record . Need a push in the right direction .
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I would say either, unless you wanted something geared more towards autonomous flight (if that is specifically your plan)
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HDtallrider
Well-Known Member
The SuperX has autopilot. Griz. Check your inbox.
The SuperX would also be my choice.
HDtallrider
Well-Known Member
Hey griz. Check your PM inbox ( next to "alert") and get back to me.
HDtallrider
Well-Known Member
Hey griz. Haven't heard from you for a few days. Any news on the build? I'm leaving on the 8th for about 3 1/2 weeks. It would be great to catch up before I leave. Your build is one of the more interesting ones on the site.
Sorry guys about taking so long to git back to you . Tried to upgrade my computer to windows 10 . Big mistake . Just now getting some of the bugs out . Lost most of my favorites list and a few other things . Will get back on here today and let you know whats going on .
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Haha, Windows 10 updates are having about a 50% success rate at the moment. I upgraded to Linux on my main HDD of personal computer a while back. Have not regretted it one bit xD.
HDtallrider
Well-Known Member
That sucks...... I was thinking about doing the same. Now I think I'll just go Apple when they go on sale the first of the year.