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-   -   Looking for a lehner 1930 (https://www.rc-monster.com/forum/showthread.php?t=18216)

BL_RV0 01.23.2009 12:22 AM

Which do you prefer?

What's_nitro? 01.23.2009 12:23 AM

For what? :neutral:

BL_RV0 01.23.2009 12:28 AM

Say, um a lightweight truggy.

What's_nitro? 01.23.2009 12:30 AM

Lehner < (9 pounds) < Neu

BL_RV0 01.23.2009 12:33 AM

What makes the lehners so much lighter than neus?

BrianG 01.23.2009 12:34 AM

No heatsink and less material due to the slotless stator?

What's_nitro? 01.23.2009 12:38 AM

Mainly the slotless design. That iron is heavy. But the Neus have a larger can as well, then if you get the finned can it's even more weight.

BL_RV0 01.23.2009 12:42 AM

I wish neu would make a 1412.... :oh:

What's_nitro? 01.23.2009 12:46 AM

I wish Neu would allow us to order custom motors via a "click-and-drag" interface. :smile:

lincpimp 01.23.2009 01:55 AM

Quote:

Originally Posted by What's_nitro? (Post 254805)
Lehner < (9 pounds) < Neu

9lb truggy:lol:

Stick with a neu for those truggy size wheels and tires. You need torque to make the heavier wheels/tires react quickly. If you plan to make it super light, a 1512 or medusa 60mm on 6s should do the trick. Something like 3000mah 25-30c cells for power.

brushlessboy16 01.23.2009 07:41 AM

Quote:

Originally Posted by lincpimp (Post 254832)
9lb truggy:lol:

Stick with a neu for those truggy size wheels and tires. You need torque to make the heavier wheels/tires react quickly. If you plan to make it super light, a 1512 or medusa 60mm on 6s should do the trick. Something like 3000mah 25-30c cells for power.

Dont know how you plan to get the truck under 9lbs.... Everywhere I have looked has the kit weighed as 9.5lbs without electronics.:whistle:

bdebde 01.23.2009 12:03 PM

Even at 9lbs I would not run a 1930. I ran one in my buggy at 7.6lbs, worked great if geared less than 40mph, anything more and it would start to get hot. I now run a 1940, and don't have to worry about gearing (just getting the batteries too hot,lol).

othello 01.23.2009 12:55 PM

The Lehner 1930 is a small powerful motor and a good choice for a very light wheight buggy with conservative gearing. On our austrian forum a user tried his XT8 truggy with his Lehner 1930 which he primarely used to power his Mugen MBX5R. On loose surfaces he never faced temperature issues and had plenty of power even in a truggy: see video and picture of Lehner 1930 mounted.

On high grip surfaces and more throttle use the Lehner 1930 run hot: see eagletree graph 1, graph 2 (temp b represents motor temperature in degrees Celsius)

No wonder when you think about its very small mass. I personaly used a Neu1512 powering my buggy and it is was a perfect fit. It also powered my truggy for quite some time but did run hotter than a Neu 1515.

One thing you have to be very careful about when using Lehners optional fan cooled motors is to protect the motor from dust, stones which could be sucked into the motor. There is only a very small gap between rotor and windings. Some pictures of a Lehner 1950 prepared for offroad use by one of our german forum user (PlanBFidelity): shielding pic 1, pic 2

Takedown 01.23.2009 01:44 PM

Getting your truggy under 9lbs shouldnt be to difficult.

lincpimp 01.23.2009 02:02 PM

Quote:

Originally Posted by Takedown (Post 254927)
Getting your truggy under 9lbs shouldnt be to difficult.

Just don't run wheels or tires and you will easily get under 9lbs... (note sarcasm)


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