motor Xiongda dual Speed (dos velocidades)

Hola

he encontrado este motor de engranajes y aun veo que lleva ya tiempo en el mercado no me habia fijado hasta ahora en lo caracteristico de este motor, lo comparto por aqui porque me parece una solucion interesante la que propone este fabricante,

Es un motor de engranajes, hasta aqui nada nuevo en el horizonte..., la novedad son las dos reductoras que incorpora, una de 1:4 y la otra de 1:8,  en el display se pueden configurar para que la primera relacion de 1:4 entre automaticamente cuando pasas de 16km/h y la de 1:8 usada para subidas o para las arrancadas por su mayor par troque entra hasta esa velocidad, tambien se puede seleccionar una relacion u otra de forma manual pulsando un boton,

creo que el fabricante tambien da la posibilidad de personalizar las rpm-max./min . segun bobinado para adecuarlo al tamaño de rueda concreto.






mas info. en este hilo

https://endless-sphere.com/forums/viewtopic.php?f=3&t=58490


el precio es razonable y sale mejor incluso comprandolo en Europa

http://www.ebay.fr/itm/Xiongda-double-vitesse-moteur-support-velo-electrique-kit-36V-48V-avant-arriere-roue-/121641659397

Me parece extremadamente interesante. Es algo que si esta bien resuelto elimina una de las debilidades de los motores de buje.

Aqui hablan largo y tendido sobre el

https://www.electricbike.com/2-speed-e-matic-xiongda/

Pros

When using this motor with a 36V controller, the top gear provided 25-kph (16-MPH) with NO pedaling, which is the EU maximum legal pedelec speed. Dave tried it with a 44V LiPo battery, and he felt that it performed much better at that voltage, and it managed to climb a hill that is nearby without overheating, which has a very steep 14% grade.

Contras

Dave disassembled this motor to check the internals. He found that there was not enough grease from the factory, and the included grease was of a poor quality (waxy). He took these pictures and then packed it with high quality synthetic grease, and the motor ran much quieter after that. He mentioned that the dis-assembly was quite easy and quickly done.

En endless


Re: 2 Speed Motor

I've now done about 40 hilly miles on it- nearly all with 12S lipos at about 46V. I found out that if you put it on level 4 instead of 5, and then pedal it around, it's as quiet as any hub-motor. Level 5 is always noisy. As a European type pedal assist bike, it's pretty good. There's plenty of torque for climbing steep hills and good speed on the flat...Neither the controller nor motor have been anything more than warm enough to know that they've been used.

https://endless-sphere.com/forums/viewtopic.php?f=6&t=59877&p=914152#p914152

I've made 100km with this stupid bike and I'm pretty happy with it and the motor.
It tops out at near 35Kph with throttle, it can climb a 2digit grade, It is the opposite of what I've considered a Bike during my life, and still remain that

I think it stall without pedal at say 12% grade, but it is so highly geared that adding just a bit of torque with the lowest pedal gear allows even 20% hills

https://endless-sphere.com/forums/viewtopic.php?f=3&t=58490&start=250#p933712

I took the bike out for a test run. It's powered by 12s of Lipo. The summary of my testing, is that it's the bike I plan to take out when I next go out geocaching. Which means I'm happy with it.

In low gear, the top speed was 12mph, in top gear it was 20 on the level. That's pretty good for a 250 watt motor.

I took it to my local steep hill test road. It climbed it at 7 or 8 mph, with only a very slight encouragement of pedalling; most of the hill it could climb without any help

Parece que puede funcionar no solo con su controlador. SE pierde el cambio automatico, eso si, pero queda la opcion manual

The autoshift does work; when the speed falls to around 7 or 8, it changes to low gear, and at 12 or so it changes to high. But, obviously, it has no anticipation. When it changes gear, you lose power for about a second. My feeling is that I'll prefer to make my own choice when to be in low and when to be in high, based not only on my current speed, but also on what I can see coming up ahead of me. So I think that for me, the autoshift won't be very useful.

Which means that I could replace the controller with any controller that will let the motor go in reverse at full speed.

Tras leerme 15 paginas de Endless esphere, las criticas son buenas, en general

bolondro2 escribió:https://endless-sphere.com/forums/viewtopic.php?f=3&t=58490&start=250#p933712

I took the bike out for a test run. It's powered by 12s of Lipo. The summary of my testing, is that it's the bike I plan to take out when I next go out geocaching. Which means I'm happy with it.

In low gear, the top speed was 12mph, in top gear it was 20 on the level. That's pretty good for a 250 watt motor.

I took it to my local steep hill test road. It climbed it at 7 or 8 mph, with only a very slight encouragement of pedalling; most of the hill it could climb without any help

Parece que puede funcionar no solo con su controlador. SE pierde el cambio automatico, eso si, pero queda la opcion manual

The autoshift does work; when the speed falls to around 7 or 8, it changes to low gear, and at 12 or so it changes to high. But, obviously, it has no anticipation. When it changes gear, you lose power for about a second. My feeling is that I'll prefer to make my own choice when to be in low and when to be in high, based not only on my current speed, but also on what I can see coming up ahead of me. So I think that for me, the autoshift won't be very useful.

Which means that I could replace the controller with any controller that will let the motor go in reverse at full speed.

Tras leerme 15 paginas de Endless esphere, las criticas son buenas, en general

Me parece muy interesante también. Como opción de motor legal tiene pinta de ser la que más prestaciones puede dar a esas potencias gracias a la doble marcha. Estoy por coger uno para probarlo en un proyecto que tengo de bici de carretera, aunque no quería que llevara display y el kit este parece que lleva uno bastante grande...

Estoy por la pagina 18. A finales del 2014 cambiaron de controlador por uno que les daba menos problemas con el cambio automatico (que al principio no les iba fino) y ademas, en caso de que no le acabe a uno

Infinion controllers also can be arranged to do reverse. No problem.
But non does the trick of auto switching gears.

Te quedas con un cambio manual y sin mas historias.

Y ademas, una prueba en condiciones.

I'm talking about the 36v one at 20A, which I can imagine is very similar to the 48v one at 15A. The following statements are for throttle only - no pedalling.

If you put the switch to low gear and accelerate from a stop, it will draw its maximum current until you get to about 13 km/h, and then the current ramps down until it's zero at about 19km/h, so you can't go any faster. It makes good power and torque up to about 10 mph, which is the speed it will hold on a slight incline. It will manage a 14% hill without pedalling with 110 kg on board and a bike with all-up weight about 27kg.

With the switch in high gear, it behaves exactly like a Bafang SWX at the same current, i.e. it'll draw maximum current up to about 21km and then it ramps down to zero at about 32 km/h, which is its top speed. It makes good power and torque up to about 27 km.

It can maintain good torque right down to about 5kmh

Cada vez me va gustando mas.

Manual completo de programacion del display

https://endless-sphere.com/forums/viewtopic.php?f=3&t=58490&start=450

http://www.szktdz.com/upload/file/20140913/20140913155038_92748.pdf

15kmh en cuestas y 32kmh en llano son velocidades muy respetables para este motor tan pequeño. Además, son velocidades suficientes para desplazamientos urbanos, salvo por la calzada, que personalmente prefiero más velocidad para evitar que los coches molesten.

Tiene buena pinta, aunque en ES se ven unos cuantos casos de rotura de engranajes al cambiar de velocidad. Parece que a veces no hace el cambio suficientemente rapido y se lia. Por otro lado parece que el fabricante responde bien y ademas hay recambios.

Ostras, pues eso es un fallo gordo. Aunque haya piezas, tener que cambiar un engranaje es un follón...

No se si sera un tema de la grasa en ese caso concreto, pero si hay varios rotos en el hilo de endless sphere.

Es una pena porque el motor parece bien construido. Me imagino que sera un fallo de diseño, y al ser un producto muy nuevo todavia sea un poco "beta"

Por lo que yo recuerdo lo que habia era un usuario al que se le rompio dos veces, y la segunda fue porque al cambiar los engranajes se le quedaron restos que destruyeron los otros. Tambien es cierto que el fabricante le envio los repuestos gratis y a toda velocidad.

También habría que ver que amperaje y voltaje ha soportado para quedar en ese estado, carga de la bici, sibpedaleaba...