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View Full Version : is a Z3 better for long range than a Z2?



slappomatt
31st December 2015, 02:07 AM
I currently have a well loved Z2 and figure I can get about 9-10 miles out of it with current setup, 7400mah 4s, Hacker a30-8XL with a 10X6, I know I can change some things around and get more, but I was wondering what kind of range people are able to get out of the Z3 and I kinda want to redo the plane here soon and clean it up. Wondering if a Z3 would be an upgrade range wise. or should I save up a little more and build a drak? ;)

Hmerly
31st December 2015, 03:51 AM
Might as well get the latest and greatest. The drak looks like a fantastic platform for both rAnge and speed so no reason not to get one if you're willing to pony up the extra cost.

The ziii is, imo, a nice platform and can be great for long range. However, I wouldn't say it's that much better than the zii in this respect. Both are fantastic but if you have a zii already I'd skip the ziii and forge ahead with a drak.

gnrc
2nd January 2016, 02:59 PM
Actually the Z3 is less efficient mah/distance wise than the z2 (given a roughly equal setup), vierfuffzig did some comparisons, not sure if I can dig up recordings/conclusions from him.

But 9-10 miles does sound somewhat short - at what throttle % are you normally cruising? It might be that you are simply flying too fast/inefficient ;)

vierfuffzig
2nd January 2016, 04:07 PM
i'm more on the metric side here, but if you're talking statute miles, and 10 of them is the distance you can reach (one-way) until you have to turn around back home, you're hitting about 3 Wh/km. that's pretty much where i found the Z3's sweet spot.

i think you could squeeze a bit more out of your ZII even without major changes in the drivetrain, getting you somewhere around 2 Wh/km, plus it takes 10-15 Ah of low-C lipos (like multistar) without drawbacks in handling. this would get you out to 20 miles +.

so, like said before, the Z3 is a great airframe and a blast to fly, but if you're looking for a major improvement of efficiency compared to the ZII, you might rather want to go for a larger wing to reduce load and AOA.

cheers, basti.

slappomatt
2nd January 2016, 06:33 PM
Just did 10.5 miles today and landed with almost 1000mah left, so I think this setup has almost 12 in it. Conditions where pretty ideal, got some azimuth tips from ibcrazy, and was way more conservative on throttle.

BacklashRC
2nd January 2016, 10:30 PM
I regularly fly 14-15 miles using the Z3, the secret sauce combo, and a 8000 mAh Multistar battery. I land with some reserve as well. I use the recommended prop size from Ritewing (10x5).

slappomatt
3rd January 2016, 09:07 PM
I regularly fly 14-15 miles using the Z3, the secret sauce combo, and a 8000 mAh Multistar battery. I land with some reserve as well. I use the recommended prop size from Ritewing (10x5).

impressive. Good to know.

vierfuffzig
4th January 2016, 04:53 AM
@slappomatt: wow, that's very impressive indeed! just to get you right, you do get about 30 miles total trip out of say 6-7Ah with that setup?

slappomatt
4th January 2016, 08:27 PM
@slappomatt: wow, that's very impressive indeed! just to get you right, you do get about 30 miles total trip out of say 6-7Ah with that setup?

here is DVR footage for 10.6 mile flite.


http://www.youtube.com/watch?v=jBZh-yra2Ec

vierfuffzig
5th January 2016, 05:31 AM
awesome, thank you!

ritewing
6th January 2016, 01:18 AM
The z3 has crazy long legs here in AZ.
I have also done this many times, the Z3 at 35 to knot cruise is crazy efficient on the ss 1300 motor .
I regularly fly 14-15 miles using the Z3, the secret sauce combo, and a 8000 mAh Multistar battery. I land with some reserve as well. I use the recommended prop size from Ritewing (10x5).

gnrc
6th January 2016, 03:30 AM
here is DVR footage for 10.6 mile flite.


http://www.youtube.com/watch?v=jBZh-yra2Ec
Nice flight. But using 80% (6547 out of 8000) for 10.5miles and back (or 21 total) seems like 30miles on that pack not that likely - unless you flew with quite a bit more throttle than you needed.

Also 3w/km (99.5kw for 33.8km) is pretty spot on for what was said earlier about z3 efficiency, which is around 50% less efficient vs z2 (at ~2w/km)

crispy12
22nd August 2016, 09:00 AM
Sorry to dig up an old thread. What kind of flight times and range can others get here? I'm planning to use a 9x6 prop with Sunnysky 2216 1250kV motor and 5200mah 4s (mini talon combo) on this. I see you guys are able to load it up with quite large batteries as well!! 8000 mah is huge.

I'm able to get easily over 60km (30 km out and back) on the mini talon or skyfun flying efficiently with this power combo on 5.2ah battery so i hope i can get at least a comparable amount on this plane.

HFMan
22nd August 2016, 02:47 PM
I don't think that motor will be anywhere near strong enough for a Z3. The Z3 often weighs in at more than 2.3 KG, has less wingspan than a mini talon, and needs at least 45-50 amps to get airborne.

I've been out 8.2 miles and back on two 5900 4S batteries, but that flight required a climb of over 3500 feet. I think my average total distance on this setup has been around 24 miles. The Z3 is just not the most efficient platform for distance flying.

crispy12
22nd August 2016, 08:44 PM
Thanks for your reply!
2.3kg is pretty heavy. What's the average unladen weight of z3 (no batteries)