E-MTB Drive Gear with Spur Gears "Directdrive"

Kaly · December 8, 2016, 5:49pm

This is pushing it as always One question how those motor are performing ?

Nowind · December 8, 2016, 5:54pm

Thanks Kaly.

Overall performance is nice!

Start from Standstill with low accelleration is very good. Start from Standstill with High accelleration is very bad----cogging

ones it rolls absolutely no cogging, good power, not on 12S-Roxxy Level but next to it

This are my expierence after the first runs.

Kaly · December 8, 2016, 6:02pm

How will you compare them to the sk3 193 ? Because I have experience with the sk3

Nowind · December 9, 2016, 5:53am

I never was dissapointed by the SK3 Motors, really like them. Main reason to choose the Aliens was the fact of high KV. Also the more closed design suits good to the full sealed direct drive. 10mm Motorshaft and Silicon wires was another point. Generall design in black with silver Alien Logo looking badass.

To compare the riding expierence is not easy caused to alot higher RPM, what i regocnize again on this Alien motors is that they are louder as the SK3. On 8S its not that loud as by another Setup i tried in the beginning of this year on 12S.

Kaly · December 9, 2016, 10:31pm

thank you they really look bad ass on that drive train

Randyc1 · December 10, 2016, 4:51pm

Incredible Work Nowind !!.. to bad SK3 don’t develop Motors for E-boards !

Okami · December 10, 2016, 5:27pm

Hah I think if they wished they could! Just have to convince them it is worth it to do so! There’s an order going on (or it was) to order Sk3 with silicon wires and even hall sensors. Not sure about the axle lenght but they were also ready to add keyshaft to the axle, if needed.

Randyc1 · December 10, 2016, 7:35pm

I would have liked (6354) for a Double Rear with lower KV , like 220KV instead of 260KV

Nowind · December 10, 2016, 8:19pm

Thanks Mate. I think there are some good Motors out there for building Eboards.

Good old Turnigy SK3, never make a mistake with them (-; Alien APS got many nice ones. Leopard also got 63mm Motors with a big KV range. Trampa has some fine Motors now, with many features.

Got some runs today with my new Setup… Using the Innovas Street tires inflated to 70PSI / 5BAR, hard as concrete Going with SLS Lipos 4x4S 5000mAh 40C as an 8S2P pack

Tracked and filmed one ride… Distance 10km Average Speed 27kmh Topspeed 51kmh consumed energy 8000mAh, what is 240Wh, so we go with 24Wh / km Batteries and ESC stays cool, Motors are warm but far away from hot.

Check the video, showing some features of the drivetrain :

squad · December 10, 2016, 8:45pm

Holy f***! Want level is so high! Ultimate eMTB, with 4 WD it would be the holy grail of all eMTBs out there.

Randyc1 · December 11, 2016, 3:51am

That Drivetrain is Awesome !

Could a 18650 Pack give you much more range ?

Nowind · December 11, 2016, 8:05am

Thanks Randy. Depends on the size of 18650 Batterypack (-; Dont forget that 8S-10AH is not big at all… only 300WH

Nice Squad, thank you. I´m fixxed up with the 4WD too (-; the traction offroad and corner speeds was just too nice!!!

Nowind · December 12, 2016, 5:25pm

Some short Footage from different angle :

flatsp0t · December 12, 2016, 9:06pm

Now i know what will be the first thing i do with VESC6.

bbq870 · December 12, 2016, 9:42pm

E-MTB PORN vom feinsten!!!

Riako · December 17, 2016, 7:48pm

hoooo miss that topic !! It’s crazy … It’s a piece of art, doing hard !

bbq870 · December 20, 2016, 4:21am

can this be 3D printed from Nylon or the super strong Taulman 910 Nylon Alloy??

Nowind · December 20, 2016, 6:09am

We tested some PLA printed ones, this will not hold up. Actually i stay with the machined POM Gears, they seam to be really durable.

Randyc1 · December 20, 2016, 6:19am

what is POM ?

bbq870 · December 20, 2016, 7:53am

POM is a durable plastik. I think is similar to teflon, but not sure. (no lubrication needed with metal gears) Polyoxymethylene (POM), also known as acetal,[1] polyacetal and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability. As with many other synthetic polymers, it is produced by different chemical firms with slightly different formulas and sold variously by such names as Delrin, Celcon, Ramtal, Duracon, Kepital and Hostaform.

POM is characterized by its high strength, hardness and rigidity to −40 °C. POM is intrinsically opaque white, due to its high crystalline composition, but it is available in all colors. POM has a density of 1.410–1.420 g/cm3.[2]

Typical applications for injection-molded POM include high-performance engineering components such as small gear wheels, eyeglass frames, ball bearings, ski bindings, fasteners, guns, knife handles, and lock systems. The material is widely used in the automotive and consumer electronics industry.