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Old 07-12-2019, 08:49 PM   #1 (permalink)
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Default Review: BetaFPV 8x20 15000kV Coreless Brushed Motors in Nano S2

I have a Micro Motor Warehouse motor on the way, but in the meantime until I get it, I bought some BetaFPV motors (made for FPV micro quads) from Amazon. Figured they'd at least do the job until I get the MMW motor.

I got one installed and now I have a few flights on it.

For installation, use the white and black wired motors. They plug in and spin the right direction without having to move wires around. Unlike the Nano CPX and Nano CPS, the motor connector is a JST-1.25mm, so these motors plug right in, instead of you having to swap the connector out, which is nice.

To remove the pinion, I just used a pair of needle nose pliers and stuck them between the pinion and motor. Then simply levered it off. Some might not have it so easy and you might have to use heat - but it should come off eventually. I bought a 20-pack of pinions from China and they should be here at some point (who knows when, lol) so if anyone needs a pinion for the Nano once I get them just send me a PM.

Back to the flying:

For starters, it's a big improvement over the stock motor, especially when using HV batteries. It's enough power to do tic tocs continuously, with probably a full tic toc every second if not faster. It's hella impressive.

I did notice my tail is more likely to blow out with this motor which isn't super surprising. But it's manageable and doesn't blow out unless you abuse it

I'd definitely suggest using HV batteries with this motor, or honestly, any motor. It really does help. The improvement in power is definitely noticeable, as well as flight time increases a bit. I personally am using Wolfwhoop 260mAh LiHV batteries, but the Nitro Nectar 250mAh LiHV are supposedly the best HV you can get in this size. As much as I don't care for FPV, I will say that I'm thankful that Tiny Whoop was so popular because we now have access to great batteries and motors that didn't exist before.

Blade Nano S2 | BetaFPV 8020-15000 Motor (3 min 7 sec)
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Last edited by Number; 07-12-2019 at 09:28 PM..
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Old 07-12-2019, 11:15 PM   #2 (permalink)
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Nice review. Thanks for the great info. Very weird that for two of the helis you need to switch the motor wires but not for the third.

And nice flying as usual. The only thing missing was your inverted blade scrape.
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Old 07-12-2019, 11:33 PM   #3 (permalink)
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Well it's not that you have to switch the wires on the others, it's just that the older ones use different connectors. So you have to change them in order to use them.
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Old 07-13-2019, 07:43 AM   #4 (permalink)
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Quote:
Originally Posted by Number View Post
Well it's not that you have to switch the wires on the others, it's just that the older ones use different connectors. So you have to change them in order to use them.
Excellent flying, as always! Was that flight using one single battery? I noticed you had joined a few clips together but was wondering if those 260mah put out that kind of power throughout the whole flight. Thanks!
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Old 07-13-2019, 08:02 AM   #5 (permalink)
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Super flying Number. I'll look into that motor when my stock one starts going. I'm still using the 300 mAh HV lipos and waiting for it to need the resistor mod which will eventually show up I'm sure.

These are the lipos if anyone is curious (come in both 260 and 300):

https://www.amazon.com/gp/product/B07L4JR3G5
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Old 07-13-2019, 08:46 AM   #6 (permalink)
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Quote:
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Excellent flying, as always! Was that flight using one single battery? I noticed you had joined a few clips together but was wondering if those 260mah put out that kind of power throughout the whole flight. Thanks!
It was multiple flights. I cut them all together because none of the flights were particularly good, and I wanted to get the best moments from each one . I get about 3min of that kind of flying down to 3.8-3.9V. I tend to not fly the full battery on the Nano because even with the best batteries, performance tends to suffer towards the end making it hard to do maneuvers like those. This is unavoidable, because performance is entirely dependent on battery voltage.
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Old 07-13-2019, 10:21 AM   #7 (permalink)
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Very good info thanks. I haven’t stepped up to the HV lipos as of yet. What I have always done was fly a full 4 minutes but save my last minute for milder and less aggressive flight. Maybe I will have to give the HV’s a go.
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Old 07-13-2019, 10:47 AM   #8 (permalink)
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Cool. If you end up going HV and start having issues with it shutting down in flight, have a look-see here
https://www.helifreak.com/showthread.php?t=836531
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Old 07-13-2019, 12:04 PM   #9 (permalink)
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Also ended up getting some CrazePony 0615-17500kV motors for the tail. These do require soldering since the leads they come with are too short and the wrong connector. I just reused the stock tail motor wires and soldered the new motor to them. It gets a little hotter than the stock tail motor but the improvement in tail performance is noticeable enough to be worth giving it a shot if you want a bit strong of a tail.
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Old 07-26-2019, 10:32 PM   #10 (permalink)
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Are we using black and white wire motor for main and tail??
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Old 08-03-2019, 07:51 AM   #11 (permalink)
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yeah, as it says in OP
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Old 08-03-2019, 07:52 AM   #12 (permalink)
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Side note, I apologize to any of those who needed a pinion for the Nano. I thought I had ordered 20 pinions, but it turns out I only bought 5

Regardless, you can get them here:
https://www.ebay.com/itm/5PCS-7-Teet...72.m2749.l2649
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Old 08-11-2019, 05:24 AM   #13 (permalink)
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Hi,

Con firming nitro nectar 250hv is way to go!!..Converting all 3 of
Mine to run these..3D, Baby!!

John.
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Old 12-14-2019, 10:35 PM   #14 (permalink)
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Anyone try 6x15-19000KV for the tail? 175 out of stock (amazon) untill the 19th. I'll probably back order the 175's.

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Old 12-14-2019, 10:56 PM   #15 (permalink)
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My friend did. The 17500 hold way better than stock, but the 19000 are even more powerful. Your tail probably won't perform quite as well (some wag) but it will hold better. The other risk is the tail motor shutting down from overcurrent protection.

Before you get the 19000s, look for a 17500 from another brand. I don't think the brand is super critical for the tail rotor, as you won't notice a gain in power as much as you do on main.

These are also a great option.
https://micro-motor-warehouse.com/co...cts/cl-0615-17
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Old 12-15-2019, 06:45 PM   #16 (permalink)
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Thanks for the info. I flew MMW main motors on a CPX and it was a big improvement for 3D! It is so great to have options now!

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Old 12-15-2019, 09:45 PM   #17 (permalink)
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Back in stock on amazon.... And ordered.

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Old 02-06-2020, 09:43 PM   #18 (permalink)
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How are you all fitting the HV lipos in the stock skids? I got the 260’s and they are super tight.
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Old 02-06-2020, 09:48 PM   #19 (permalink)
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They are tighter than stock. But they will go in. You can try boiling the skids in water to soften the plastic, then pushing the battery in. Or you can try a hot air gun or hair dryer.
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Old 02-06-2020, 10:44 PM   #20 (permalink)
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Here's the perfect test for any motor combination...

Use a mCPX skid with the center crossbrace removed...and an mCPX 300mAh 45C battery (board connector too)

Probably going to be a bit heavy...unless You use the OverSky outrunner main motor w/OverSky 7mm brushed tail motor

Combine it with the mCPX Xtended tail boom and Trex150 main blades

Best part is...even though it's 3 times the price...this combination gives at least 10 times the power and the tail just won't blow out
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