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neu motor for e-maxx - 5/6/2008 6:48:12 AM   
msd_q


 

Posts: 13
Joined: 3/12/2006
From: kuwait, KUWAIT
Status: offline 		Hi
I have e-maxx and I want buy neu motor with 6s lipo
So Which would you prefer and why
Neu 1515 2200kv
Or
Neu 1521 1900 kv
Or
Neu 1527 2300kv
I want take the neu 1527 1d 2300kv I think its best for e-maxx ??
       Post #: 1

RE: neu motor for e-maxx - 5/6/2008 2:06:34 PM   
happywing



Posts: 1660
Joined: 11/9/2005
From: Canton, MI, USA
Status: offline 		The 1515 series is plenty big enough for an EMaxx. I run a 1515 1.5D/F on 4s in my 1/8 truggy and it has all the power I need and some that I don't. For 6s, consider the 1515 2.5d/f at 1700kv. The 1515 1y on 6s might be a bit much to handle.

< Message edited by happywing -- 5/6/2008 2:07:27 PM >

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(in reply to msd_q)
       Post #: 2

RE: neu motor for e-maxx - 5/13/2008 1:05:51 PM   
msd_q


 

Posts: 13
Joined: 3/12/2006
From: kuwait, KUWAIT
Status: offline
ok can it hold neu 1515 1y with good timp ??
with e-maxx
Spur Gear 62t
Pinion Gear 26t
6s lipo

(in reply to happywing)
       Post #: 3

RE: neu motor for e-maxx - 5/13/2008 6:16:48 PM   
rschoi_75



Posts: 1800
Joined: 2/1/2006
From: Los Angeles, CA, USA
Status: offline
quote:

ORIGINAL: happywing

For 6s, consider the 1515 2.5d/f at 1700kv. The 1515 1y on 6s might be a bit much to handle.


+1. I've got a 1515/1Y running on 4s in a truggy, and its already more than enough.

Assuming you're in 2nd gear, 6s, and your gearing choices above... you'll be getting approx. 64mph (103km/h). The motor is rated for 60K rpms, so it can handle the speed, but I'm not sure about heat since I've never run mine at that voltage. You would have to be real good about checking the temps often.

http://scriptasylum.com/rc_speed/_top_speed.html

Spur/Pinion Reduction Ratio (?): 2.38 : 1
Total Reduction Ratio (?): 11.68869 : 1
Tire Circumference (?): 18.38 inches (466.81 mm)
Total Motor Speed (?): 47948.21 RPM
Theoretical Maximum Vehicle Speed (?): 71.39 mph (114.68 km/h)
Theoretical Speed Rate (?): 3.22 mph/V (5.17 kmh/V)
Drag-Adjusted Vehicle Speed (?): 64 mph (103 km/h) - 10% loss
Calculated Loaded KV Value (?): 2159.83
Calculated KT Constant (?): 0.61 oz-in/A
Calculated Motor Torque (?): 0.22 ft-lbs
Calculated Axle Torque (?): 2.53 ft-lbs
Calculated Motor Power (?): 1499.83 watts (2 HP)


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Of course I''ll have coffee... I always have coffee when I''m watching radar. Everyone knows that!

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       Post #: 4

RE: neu motor for e-maxx - 5/13/2008 8:47:00 PM   
msd_q


 

Posts: 13
Joined: 3/12/2006
From: kuwait, KUWAIT
Status: offline 		yes this why i think the 1527 can hold this load without any heat more than 1515 ?

(in reply to rschoi_75)
       Post #: 5

RE: neu motor for e-maxx - 5/14/2008 7:40:32 PM   
rschoi_75



Posts: 1800
Joined: 2/1/2006
From: Los Angeles, CA, USA
Status: offline 		I'm not sure about that since the 1527 will pull a lot more amps. Even if the motor stays cool, your esc and/or lipos will be getting a real work out. The 1527 can put out around 4000w (based on Neu's specs)... and on 6s, that's 180+ amps. The main thing that worries me, is that you will be pushing the upper limits of available electronics and lipos. I don't feel good about recommending it because it doesn't give you enough "wiggle" room (not to mention that fact that I don't have any personal experience with that size motor).

Also, I have no clue if an emaxx's drivetrain can even handle a 1527 on 6s. I would strongly recommend a sticking with a 1515 and going with a lower kv model like the 2.5d/f that happywing suggested. I'm sure it will be more than enough power to keep you satisfied.

_____________________________

Of course I''ll have coffee... I always have coffee when I''m watching radar. Everyone knows that!

(in reply to msd_q)
       Post #: 6

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