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Old 03-15-2006, 06:58 PM   #1
flyboyanderson
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Default NIPPY BLACK 1608/160 BRUSHLESS - Now What?

I bought NIPPY BLACK 1608/160 BRUSHLESS motor at the Hobby-Lobby CRASH SALE. I had nothing in mind when I bought them just thought it was a good deal.

Now I have to match it to a good airframe. Since I bought two I was wondering if a P-38 or OV10 from raidentech might be a good match.

I nice warbird would be good also. Any suggestions?

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Old 03-15-2006, 07:05 PM   #2
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As I recall those motors have a hot wind, and on 3s 7 inch props might be the max. That in mind, they might be a poor choice for the Bronco. I don't know what the sats are on the p-38, but if it is light 7" props might be enough.

What is the KV on that motor?
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Old 03-15-2006, 08:07 PM   #3
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I did the same thing. Now I've got visions that motor on a GWS A-10 pusher.

Anybody ever used this motor before?
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Old 03-15-2006, 08:12 PM   #4
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Snagged this from the other forum - http://www.flyingmodels.org/index_en.htm Click over on the Great Electric Motor Test tab on the left and scroll down to this motor. Also, a poster ran MotoCalc on it for -

RPM/volt = 1620
No Load Current = 1.1 amps
Resistance = 0.062 ohms
Weight = 3.2 ounces

MotoCalc Simulations:
2S @ 8060 = 15.4amps, 104watts, 16 oz @ 52mph
3s @ 7050 = 17.6amps, 176 watts, 21 oz @ 67mph

Its awefully heavy though.
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Old 03-15-2006, 08:24 PM   #5
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RPM/volt = 1620
Yow! Very high Kv... Fine for small props spinning fast. Not so hot for larger thrust applicaitons.

An APC 7x5E looks like it for 3s.....that would be around 15-16amps.

Mike
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Old 03-16-2006, 12:46 AM   #6
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Guess I should have done my homework! I usually analyze things to death, but they were on sale pretty cheap. 7 inch prop is mighty small.

Sounds like they're pretty limited in there application. I supose I could sell or trade them. They were only $20 a piece.

Thanks for the feedback
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Old 03-16-2006, 12:58 AM   #7
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Wait a minute! If I read the chart correctly I could swing a Graupner 8x4 slim prop and get about 30 oz of thrust on 10 cell 11.5 volts. I would probably be happy with 25 oz thrust at this point.

do I understand this correctly? What's the catch?

Hobby - Lobby billed this as "For airplanes to 34 oz., gliders to 46 oz" That's a 2.8 lb sailplane.

I have a Pitts special that should have an AUW of 25 oz.

I'm a little confused
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Old 03-16-2006, 01:49 PM   #8
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An 8x4 is probably not too far out of reach, but that is a low pitch speed.

I think it would work great in a p-38 twin so long as it is a sleek ship (perhaps no land gear attached). It would work well in the Ryan p-38 or in a smaller sized ship that is intended to go fast.

Mike
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Old 03-16-2006, 02:30 PM   #9
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Low pitch speed? On a 1620Kv motor? Nah. In theory, that's around a 70MPH pitch speed! Reality is somewhere in the 60's.

It's actually pretty close to a glow .15 on an 8x4 and 3S, in RPM and prop size. Maybe even a little stronger.

IMHO, it's a good match for something like a Raidentech P-38, which asks for glow .12s.
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Old 03-16-2006, 04:45 PM   #10
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Well, if it gets close to a .15 glow then I'm good to go. There are a several inexpensive ARFs at Raidentech, nitroplanes, an ak-models that would be candidates.

I'm not wild about foamies, but I haven't tried one yet.

I'm a electric newbie

BTW this feedback is great. I'm starting to get a feel for the electrics. I should have my first flying in about 2 weeks.
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Old 03-16-2006, 07:07 PM   #11
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Originally Posted by Matt Kirsch View Post
Low pitch speed? On a 1620Kv motor? Nah. In theory, that's around a 70MPH pitch speed! Reality is somewhere in the 60's.
Actually Matt Yes, no way to compensate (yep even RPM) with low prop pitches.

OK I am not totally correct, but to get the airplane moving faster, you need a prop with pitch. Granted it helps to spin it faster, but still, 8x4 props don't tend to move the plane very fast even at 16K.

At any rate - you are right it would work well on a low drag ship. I used a mega 5 turn motor with 6x5.5 props on my small fast ships with no complaints. This motor with a 7x5 at 15-16 amps should do very nicely....on the right plane. A 7x6 would be even better!

All on what you are after, but if you want speed the 8x4 is not the place to start!

Estimated pitch speed is notoriously wrong. I have an ACE Simple 400 with a Mega 5 turn (well I used too....it has a skatty with a 7x8 prop now!) that used to exceed it's pitch speed by almost 14mph.

I have seen extensive testing on how you can do that, many factors at work, but it is pretty cool to play with. I wish I could do some realtime testing with on-board airspeed indicators.

Cool think about the simple 400 it is now almost as fast (about 10-12mph slower) with the skatty running at 11amps as the mega running at 18amps.

Pitch speed does it (OK and RPM's).

Mike
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Old 03-16-2006, 07:21 PM   #12
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Originally Posted by flyboyanderson View Post

I'm a electric newbie

BTW this feedback is great. I'm starting to get a feel for the electrics. I should have my first flying in about 2 weeks.
One of the joys of electric is the motors either through gearing or the magic of outrunners spin larger props (at a slower speed). This brings great and fun advantage to electrics. Motors that generally produce less HP can now fly planes BETTER than glow engines spinning small props!

This motor is not a stinker, but it is more like a glow motor in the fact that it spins a smaller prop faster. No big deal.

But it is a joy to see a electric plane with tiny motor spinning a big prop go straight up.

I fly a Herr Mini SE and it uses a 10x7 prop. It normally would have a norvel .061 spinning a 6x4 prop. Mine does 200ft loops and goes straight up for a long long way. No way a Norvel can do that!

Fun stuff this electric thing....BTW I only have one glow plane left - a Sig Kougar. It will get electrocted one day....I have not flown a glow plane (of my own) for two years now!

Mike
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Old 03-16-2006, 07:30 PM   #13
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This continues to be interesting. Years ago I flew CL team racing. The hot setup was a .15 glow or diesel (Choice depends on how many pit stops you wanted to make) and a 7X6 prop. Loads of fun and very fast. You have to go fast so the prop blades would transition from a stalled mode to a bite mode. Acceleration was ok until the prop got unloaded.

I can see where a clean model would benefit best from this motor.
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Old 03-18-2006, 01:12 PM   #14
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Im kind of new to this hobby and dont know to much about electric motors. It says this motor uses 6-8 cells but can you use Li-Pos with this motor? Thanks
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Old 03-18-2006, 03:00 PM   #15
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It says this motor uses 6-8 cells but can you use Li-Pos with this motor?
Yes you can - volts are volts no matter what cell type is supply the voltage.

2s-3s would be fine.

Mike
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Old 03-18-2006, 09:24 PM   #16
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Originally Posted by frvrngn View Post
Snagged this from the other forum - http://www.flyingmodels.org/index_en.htm Click over on the Great Electric Motor Test tab on the left and scroll down to this motor. Also, a poster ran MotoCalc on it for -

RPM/volt = 1620
No Load Current = 1.1 amps
Resistance = 0.062 ohms
Weight = 3.2 ounces

MotoCalc Simulations:
2S @ 8060 = 15.4amps, 104watts, 16 oz @ 52mph
3s @ 7050 = 17.6amps, 176 watts, 21 oz @ 67mph

Its awefully heavy though.
frv:

So when you said 3s @ 7050 is that a 7 inch prop pitch 5? or is that rpm? What I'm seeing here (I purchased 2 also at the hl sale) is that I could use a smaller prop than normal, say a 7 or 8 inch with up to a pitch of 4-6 ona 3s? Apparently, this motor spins pretty fast, 1600 /volt so would they be a candidate for a gear box? I'm unsure about this motor, my first nippy of this type. Thanks.
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Old 03-18-2006, 11:22 PM   #17
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So when you said 3s @ 7050 is that a 7 inch prop pitch 5? or is that rpm?
Motocalc uses 7050 as a 7x5 prop. It is also notoriously off at predicting outrunner amp draw. So measure for yourself to be sure.

The KV is high (spins pretty fast) but it is not a candidate for a gearbox simply due to the fact you can't find pinions with 4mm holes in them. Since this uses a 4mm shaft (I THINK - not positive) that won't due.

You just need to select a small slippery ship for this motor. That 7x5 on a Ryan warbird would be excellent!

Mike
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Old 03-19-2006, 03:21 PM   #18
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Originally Posted by rcers View Post
Motocalc uses 7050 as a 7x5 prop. It is also notoriously off at predicting outrunner amp draw. So measure for yourself to be sure.

The KV is high (spins pretty fast) but it is not a candidate for a gearbox simply due to the fact you can't find pinions with 4mm holes in them. Since this uses a 4mm shaft (I THINK - not positive) that won't due.

You just need to select a small slippery ship for this motor. That 7x5 on a Ryan warbird would be excellent!

Mike
Mike:

Thanks fo rthe explanation. I don't know if I have a small slippery ship, I do have lots of planes though. Is that all it's good for?

Henry
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Old 03-19-2006, 04:39 PM   #19
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Originally Posted by flyboyanderson View Post
I bought NIPPY BLACK 1608/160 BRUSHLESS motor at the Hobby-Lobby CRASH SALE. I had nothing in mind when I bought them just thought it was a good deal.

Now I have to match it to a good airframe. Since I bought two I was wondering if a P-38 or OV10 from raidentech might be a good match.

I nice warbird would be good also. Any suggestions?

Wasn't aware of the sale. I've heard they're good motors, but I guess people don't like paying $90 for a parkflyer size motor, with all the $50 jobbies around, although the quality/performance is relative. My LHS has one around (Cranberry Hobby Depot) collecting dust forever. I'll have to jerk him around (in the kidding sense). He doesn't like when I tell him about his old stock that is on clearance sale elsewhere.

I would probably try to save the motors for their intended use. The idea behind the large dia outrunners is to drive large props for 3D planes. This one's a bit odd, in that its a high kv jobbie, but still has the same high thrust effect. Not that they wouldn't fly anything else, just that I'd want to use a lower cost motor on a parkflyer that doesn't need that type of motor. As one person stated before, they are a bit heavy, especially when considering twins.
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Old 03-19-2006, 09:33 PM   #20
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Originally Posted by taekwondo View Post
Mike:

Thanks fo rthe explanation. I don't know if I have a small slippery ship, I do have lots of planes though. Is that all it's good for?

Henry
No - What did you have in mind for it when you bought it? Or what are you thinking about putting it on?

Mike
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Old 03-20-2006, 01:53 AM   #21
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Pretty sure it's 2.14ozs and not 3.2.....

Kcar
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Old 03-20-2006, 06:50 PM   #22
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Hobby Lobby sent me an email indicating that the Nippy Black is on Backorder. I think I should cancel and get something more appropriate. Any suggestions?

I noticed the AXIs are on sale.

Thanks
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Old 03-20-2006, 06:55 PM   #23
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Cancel and get the AXI - they are excellent motors....

Mike
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Old 03-20-2006, 09:17 PM   #24
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Originally Posted by rcers View Post
Cancel and get the AXI - they are excellent motors....

Mike
I agree with Mike. I have 2 of these and I don't know what to do with them?

Henry
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Old 03-20-2006, 09:19 PM   #25
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Originally Posted by rcers View Post
No - What did you have in mind for it when you bought it? Or what are you thinking about putting it on?

Mike
I had in mind greed. It was on sale, and I thought, how bad could it be for 20.00? Then I found out they had very limited uses.
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