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richord · 10-21-2016, 09:01 PM

I'm running 430 zeal blades, stock motor and esc. Using nanotech 2650's. 3 and a half minute flight and motor comes down hot. Is this normal? Belt doesn't seem tight.

I believe I'm using a 15t pinion, no gov. And 85% flat throttle curve. Any special settings required in esc?

Are there other motors that work for this heli?

KSKen · 10-21-2016, 09:36 PM

Just my opinion but that's over-taxing the esc and maybe the motor too.. If you're going to run at 85%, I'd have a 13T pinion on it. 85% leaves very little if any head room and swinging 480's to boot, I'm not surprised motor is hot.

Mikej · 10-22-2016, 12:58 AM

Which motor are you using? (there have been 2 stock motors, and they both run hot). What HS? How much are you putting back into your packs?

I have 2 Proto's and they both run hot - but I get 5 minutes at 2,600HS (I also run the 15T pinion)

richord · 10-22-2016, 07:04 AM

Quote:

Originally Posted by Blade550X

Just my opinion but that's over-taxing the esc and maybe the motor too.. If you're going to run at 85%, I'd have a 13T pinion on it. 85% leaves very little if any head room and swinging 480's to boot, I'm not surprised motor is hot.

Blades are 430mm, not 480mm.

richord · 10-22-2016, 07:07 AM

Quote:

Originally Posted by Mikej

Which motor are you using? (there have been 2 stock motors, and they both run hot). What HS? How much are you putting back into your packs?

I have 2 Proto's and they both run hot - but I get 5 minutes at 2,600HS (I also run the 15T pinion)

I'm using 2600 and 2650 packs. Only get 3 and a half minutes. Packs may be a little tired, but one is newer and runs the same time. Charging packs to 95%, after 3 and a half minutes, they come down barely warm and have about 20-25% remaining.

Have to double check on the motor and confirm the head speed. Blades are Zeal Energy 430mm.

Mikej · 10-22-2016, 09:05 AM

Quote:

Originally Posted by richord

I'm using 2600 and 2650 packs. Only get 3 and a half minutes. Packs may be a little tired, but one is newer and runs the same time. Charging packs to 95%, after 3 and a half minutes, they come down barely warm and have about 20-25% remaining.

Have to double check on the motor and confirm the head speed. Blades are Zeal Energy 430mm.

Unfortunately Nanotechs are renowned for working well for a while, but then losing power ....

Why are you only charging to 95%? How are you measuring that?

HarryR · 10-22-2016, 09:40 AM

All my motors for the Protos I have come down hot. Seems not to bother them. I do let them cool down for 10 minutes or so between flights.I fly 2650 and 3300 , always 4 minutes flights, no 3D.

richord · 10-22-2016, 10:39 AM

Quote:

Originally Posted by Mikej

Unfortunately Nanotechs are renowned for working well for a while, but then losing power ....

Why are you only charging to 95%? How are you measuring that?

Lipo tester after a complete regular charge.

richord · 10-22-2016, 10:39 AM

Quote:

Originally Posted by HarryR

All my motors for the Protos I have come down hot. Seems not to bother them. I do let them cool down for 10 minutes or so between flights.I fly 2650 and 3300 , always 4 minutes flights, no 3D.

You don't get more time out of a 3300mah pack?

Mikej · 10-22-2016, 11:20 AM

Quote:

Originally Posted by richord

Lipo tester after a complete regular charge.

So are you getting 95% of 25.2 volts? i.e. 24V If so that isn't going to get you 95% of flight time - more like 60%.

My guess is that your batteries are a bit tired - or possibly that your charger isn't charging fully - but probably the batteries.... Every Nanotech that I have had has been great for the first 6 - 9 months but faded very quickly after that.

learnedthehardway · 10-22-2016, 11:40 AM

You're balance charging your lipos aren't you? I'd also say it's your lipos unless you have some extra drag somewhere in the drivetrain. Played with charging to 4.15-4.17v but stopped cause it just shortened flight time and they didn't last any longer than packs i charged to 4.2v. Only difference was when I went to charge those packs to 4.2v per cell my charger timed out trying to get that last .5v in. They just wouldn't take it after being charged to 4.15v for a while..

Anyways, I have a plastic P500 with the old Lipotech motor, 15t running 430mm Zeals and a cf stretch with the MSH/Scorpion, 13t running 265 SAB mains and both get 4:30 flight times with Zippy 2700mah lipos.

Both those motors run hot as do all the other Scorpion motors I've used and the Lipotech comes down just as and maybe even a lil hotter. Nothing to worry about.

Haven't had the greatest luck with Nanotech lipos but they haven't been terrible either.

KSKen · 10-22-2016, 02:14 PM

Quote:

Originally Posted by richord

Blades are 430mm, not 480mm.

Ok, I missed that..
Not one mention of kv in any of these posts??
880-890?? more..less??
I'm running 880kv, 2650mah, 14T and 75% throt. 6 min to 3.75 volts and not new batts. 425 blades and motor is quite warm.

HarryR · 10-22-2016, 03:41 PM

Quote:

Originally Posted by richord

You don't get more time out of a 3300mah pack?

Yes but I made an " executive" decision.. I run all of them on my 4.00 minute timer.

The 3300 have about 49 % juice left at 4.00 minutes. The 2650 have about 20 or less left, as they are getting a bit old now)

richord · 10-22-2016, 08:03 PM

Quote:

Originally Posted by Mikej

So are you getting 95% of 25.2 volts? i.e. 24V If so that isn't going to get you 95% of flight time - more like 60%.

My guess is that your batteries are a bit tired - or possibly that your charger isn't charging fully - but probably the batteries.... Every Nanotech that I have had has been great for the first 6 - 9 months but faded very quickly after that.

Lipo meters read % of capacity remaining, not % of voltage. 95% is close to 25.10v.

Mikej · 10-23-2016, 12:56 AM

Quote:

Originally Posted by richord

Lipo meters read % of capacity remaining, not % of voltage. 95% is close to 25.10v.

That sounds cool - I've never had one like that

DoubleCH · 10-23-2016, 02:58 AM

Nanotech is fine. I always have good experience with them especially the 25C packs when spec'ed properly for the application. My 6S 25C 3000s have close to 450 flights each pack now and still going. Easily 4 minutes of 3D with 3.7-ish volts left, 470mm blades. Stock motor always runs hot. Hard to say whether your 2600-2650 with 3.5min flight time is normal or not, not knowing how you fly.

This is one of my nanotech 3000s at flight #400.

My Stretched Protos Long-Term Test Nanotech 6S25C3000 F400 (4 min 9 sec)

10-21-2016, 09:01 PM	#1 (permalink)
richord Registered Users Join Date: May 2009 Location: Jacksonville, FL	Protos 500 motors and setup. I'm running 430 zeal blades, stock motor and esc. Using nanotech 2650's. 3 and a half minute flight and motor comes down hot. Is this normal? Belt doesn't seem tight. I believe I'm using a 15t pinion, no gov. And 85% flat throttle curve. Any special settings required in esc? Are there other motors that work for this heli?

10-21-2016, 09:36 PM	#2 (permalink)
KSKen Registered Users Join Date: Jan 2015	Just my opinion but that's over-taxing the esc and maybe the motor too.. If you're going to run at 85%, I'd have a 13T pinion on it. 85% leaves very little if any head room and swinging 480's to boot, I'm not surprised motor is hot. __________________ *MSH Protos* Xpert-Xnova-Jeti

10-22-2016, 09:40 AM	#7 (permalink)
HarryR Registered Users Join Date: Feb 2013	All my motors for the Protos I have come down hot. Seems not to bother them. I do let them cool down for 10 minutes or so between flights.I fly 2650 and 3300 , always 4 minutes flights, no 3D. __________________ DJI MIni, XK K110 120, previously Protos 500, Goblin 570/700.

10-22-2016, 11:40 AM	#11 (permalink)
learnedthehardway Registered Users Join Date: Feb 2015	You're balance charging your lipos aren't you? I'd also say it's your lipos unless you have some extra drag somewhere in the drivetrain. Played with charging to 4.15-4.17v but stopped cause it just shortened flight time and they didn't last any longer than packs i charged to 4.2v. Only difference was when I went to charge those packs to 4.2v per cell my charger timed out trying to get that last .5v in. They just wouldn't take it after being charged to 4.15v for a while.. Anyways, I have a plastic P500 with the old Lipotech motor, 15t running 430mm Zeals and a cf stretch with the MSH/Scorpion, 13t running 265 SAB mains and both get 4:30 flight times with Zippy 2700mah lipos. Both those motors run hot as do all the other Scorpion motors I've used and the Lipotech comes down just as and maybe even a lil hotter. Nothing to worry about. Haven't had the greatest luck with Nanotech lipos but they haven't been terrible either. __________________ Mini Protos 6s stretch/XK K110/Trex 450sport v2 fbl/Rochobby Nemesis NXT/RareBear funfighter620mm ~Problem Child~

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10-22-2016, 12:58 AM	#3 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Which motor are you using? (there have been 2 stock motors, and they both run hot). What HS? How much are you putting back into your packs? I have 2 Proto's and they both run hot - but I get 5 minutes at 2,600HS (I also run the 15T pinion)

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