Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Blade Helicopters (eFlite) > nano CP X Brushless Mods


nano CP X Brushless Mods Blade nano CP X Brushless Mods Information and Help


Reply
 
Thread Tools Display Modes
Old 12-17-2012, 12:27 AM   #1
unit3890
Registered Users
 
Posts: 190
 

Join Date: Jan 2012
Location: texas
Default Brushless Tail Motor??

Is there going to be a brushless tail motor for this bird? I would love to see that happen so I wont have to worry about excess current draw from tail motors or even replacing tail motors anymore. Anyone want to ask oversky to make a smaller brushless motor? haha
__________________
MQX, DBL Mild NCPX, stock NCPX, 130X lynx, Dx7s. 2009 kawi 650r streetfigher!!
450x SK3 3600kv, Savox 0257
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
unit3890 is offline        Reply With Quote
Old 12-17-2012, 08:23 AM   #2
vadafer
Registered Users
 

Join Date: May 2012
Location: Italy
Default

Quote:
Originally Posted by unit3890 View Post
Is there going to be a brushless tail motor for this bird? I would love to see that happen so I wont have to worry about excess current draw from tail motors or even replacing tail motors anymore. Anyone want to ask oversky to make a smaller brushless motor? haha
hp02t works really fine on nano brushless setup
vadafer is offline        Reply With Quote
Old 12-17-2012, 12:38 PM   #3
unit3890
Registered Users
 
Posts: 190
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: texas
Default

Yeah i know about the hp02t but I was hoping for something smaller like a hp01t haha. A 1amp esc would also be great so not too much weight is added.
__________________
MQX, DBL Mild NCPX, stock NCPX, 130X lynx, Dx7s. 2009 kawi 650r streetfigher!!
450x SK3 3600kv, Savox 0257
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
unit3890 is offline        Reply With Quote
Old 12-17-2012, 03:16 PM   #4
vadafer
Registered Users
 

Join Date: May 2012
Location: Italy
Default

Quote:
Originally Posted by unit3890 View Post
Yeah i know about the hp02t but I was hoping for something smaller like a hp01t haha. A 1amp esc would also be great so not too much weight is added.
3.5A supermicro esc is less than a gram...
vadafer is offline        Reply With Quote
Old 12-19-2012, 02:34 PM   #5
unit3890
Registered Users
 
Posts: 190
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: texas
Default

dang that is small. Can you flash it with BLHeli?
__________________
MQX, DBL Mild NCPX, stock NCPX, 130X lynx, Dx7s. 2009 kawi 650r streetfigher!!
450x SK3 3600kv, Savox 0257
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
unit3890 is offline        Reply With Quote
Old 12-19-2012, 06:49 PM   #6
donaldsneffe
Registered Users
 
Posts: 599
 

Join Date: Mar 2011
Location: Vienna, Austria
Default

Hi,
so far I tested 4 BL tail motors on my double-BL 16600 kv HP03SEP main.
Tail ESC: Supermicro 3.5 A, 300 mAh batteries, mCP x plugs.

HP02t: worst; does not work at all with "small" tail rotors (stock, KBDD, Xtwin), but works perfectly with RRC/Plantraco tail rotor.
Hextronik 2 g: Similar performance as HP02t with Plantraco/RRC rotor; better performance with small tail rotors (but still no good performance with small rotors); for one HP02t you will get 3 - 4 Hextronik 2 g...

Those motors seem to have too low kv values (< 8000 kv) for the small tail rotors. I run 80 gov on main (mode setup in BL heli) and tried to make a throttle curve in f-mode (100-...25...-100) to improve tail performance with the small rotors; but no effect at all.

So I tried (and will stay ) two 12000 kv tail motors: Hawk 12000 and Hobbyking 12000.

And, what a big surprise:
Both of those motors work perfectly with "small tail rotors" (I used KBDD).
OK, they are about 1 g heavier than HP02t and Hextronik 2g, but:
- big tail rotor looks ugly in my eyes on the tiny Nano
- you can use a normal, short tail rod, do not have to make it longer (otherwise the RRC/Plantraco prop can touch main blades) - so little lighter
- you do not have to use a big tail fin (so little lighter)
- small tail rotors are also little lighter than the big ones.

All in all its only a very slight weight penalty (if any), <<< 1 g.

I weighed the tail rotors:

KBDD: 0.22 g
Walkera 4g3/4b120: 0.38 g
Plantraco/RRC: 0.41 g
Xtwin: 0.28 g
Nano stock tailrotor: 0.14 g

I know now, which motor I will use for tail in my strong BL Nanos - for sure not HP02t.
I do not see any advantage of HP02t; its expensive and weak...
If Hobbyking 12000 would be in stock again soon, it would be the perfect motor - Hawk 12000 is far more expensive.


Walter
donaldsneffe is offline        Reply With Quote
Old 12-21-2012, 01:33 PM   #7
motoracer5
Registered Users
 

Join Date: Mar 2012
Location: Nakusp
Default

Nice testing Walter! I suggest you try the MiniCP rotor though. It is a little longer, has more pitch and does not flatten out at high speeds like the stock one. Only .02g heavier to boot. I found the xtwin and kbdd tail rotors to have too much overshoot on stops, is this a issue with blheli tail?

I should rewind my hp02t to about 14000kv, I just need to get my hands on some wire. Should work with the small props quite well. I was wondering if rotating mass in the bell/magnets had much effect on tail performance? I understand that damped mode slows the tail faster, but I think a lighter bell would help? Also maybe get up to target speed faster, depending on load of course. I am also wondering if the bell on the Hawk ends up being lighter that the hp02t, dues to only having 6 magnets. Guess I should get a BL setup for my Nano before thinking about this too much.
motoracer5 is offline        Reply With Quote
Old 12-21-2012, 01:38 PM   #8
koi-fish
Registered Users
 
Posts: 5,450
 

Join Date: Jan 2012
Location: Houston (League City), TX
Default

Quote:
Originally Posted by unit3890 View Post
Yeah i know about the hp02t but I was hoping for something smaller like a hp01t haha. A 1amp esc would also be great so not too much weight is added.
I havent been able to find replacement shafts for the hp02t either. If anyone can let me know where they can be bought, I'd like to repair the one I have gathering dust in my parts bin
__________________
/ 130x, 300x, Gaui X2, X3, X4 II, x5, 450x, 550X, DX9, Harley Road King/Sportster
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


"It's not getting any smarter out there, you have to come to grips with stupidity and make it work for you" - Frank Zappa
koi-fish is offline        Reply With Quote
Old 04-20-2013, 08:50 AM   #9
buddyholly
Registered Users
 

Join Date: Mar 2012
Location: Germany
Default

Quote:
I havent been able to find replacement shafts for the hp02t either. If anyone can let me know where they can be bought, I'd like to repair the one I have gathering dust in my parts bin
After confirmation by mail, that they have them in stock I ordered spare shafts for HP02T at oversky's online-shop. Just put an order for this HP03T shaft and during further process in the comment box add the information, that you need HP02T shafts instead. I don't know why they don't put it in the shop as separated article, but the mentioned procedure worked well for me.
__________________
T-Rex 550E V2 (HC3-SX), T-Rex 250DFC Pro (3GX), Genius CP, Super CP, Mini CP, Devo 8/s
buddyholly is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Blade Helicopters (eFlite) > nano CP X Brushless Mods


nano CP X Brushless Mods Blade nano CP X Brushless Mods Information and Help

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com