joscha

Hi there, I'm selling my Lyen 6 FET controller for sensored motors (lyen.com) because I switched to using a V(edder)ESC early this year. In my setup the lyen controller never got more than hand warm (I set it too "only" 25A max @ phase wires, though). I bought it in September 2015, condition is pretty good. Has never been exposed to the elements. It's the version with CA connector, usb-ttl connector and regen braking jumper. However, I did change some connectors: - Battery connector: two XT90s in series, with inline mini blade fuse. - PAS, e-brake, 3 speed switch connector: Bulgin PX0410/10S/6065, Buccaneer Series, Female Contacts. I'll include the male counterpart. - Motor connector: standard 9 pin, however I need the connector so I will revert to bullets. I still got the clunky original connectors in case you want to use those. I also got the usb to ttl adapter for the controller. Price: ~75 gbp for controller and ttl adapter including shipping. Or collection in Liverpool. I also got spare pas sensors and speed switches. Best, Joscha

Well, I got a response from the aliexpress vendor. According to him the motor is as xfk. Unfortunately he just ignored my question about RPMs

No worries, im anyways on standby to see whether the aliexpress vendor gets back to me about rpms and model of the xofo or not..

Thank you for your advice. Reasoning behind the CA was that I might be tempted to install a torque sensing crank set at some point in the future, and would have to replace the display then anyways. I'm not entirely happy with how PAS feels. Also I usually prefer to buy high quality items once instead of buying cheap multiple times. Reason for the switch is that I'd like to have an off/zero assist switch, just for subjective peace of mind. I do realize that this is not really necessary or a good implementation of an "emergency stop". About the xofo motors: To clarify, you recommend the xf-v(k) (http://www.xofomotor.com/display.asp?id=780), right?. Because the smaller xfk (http://www.xofomotor.com/display.asp?id=783) is too weak? I'll try to contact the seller and see how he responds. My mate unfortunately does not want to sell his oxydrive kit motor. I was considering a bbs02 mid drive at some point, but it takes away the possibility to ride the bike without assist which i'd like to retain, and i cant make due without the front shifter. Especially not with the added resistance that a disabled motor in the system would bring. Actually, there is one thing that I don't understand though. You say 328 rpm is too fast for its power, but then say that the oxydrive motor would be perfect for me. However, as far as I know, the oxydrive motor is specced at around 320rpm@36v, just like the q128c? What am I missing? Best regards, Joscha Edit: Btw, I was originally looking for a 260rpm@36V motor, but couldn't really find any that supports cassettes. The hub motor market is horrible for unexperienced people.

Hi everyone, I'm planning to convert my Scott Sub 20 2013 700cc into a pedelec. http://images.evanscycles.com/product_image/image/8bd/483/19c/83017/product_page/scott-sub-20-2013-hybrid-bike.jpg The bike itself weighs 11kg plus change and I'm 80-85kg and moderately fit. I don't mind pedaling, but my friends I usually cycle with are all on electric motors now and I can't keep up with them without support . Also I like tinkering around with things, so this project is 2/3 practical and 1/3 fun for me. As you can see from the picture my bike is quite sleek, that's why I want to use "small" LiPos, controller and batteries instead of for example an oxydrive kit with the "heavy" 3.8kg bafang motor and big 11AH battery. Range is not really relevant for me, I'll just carry replacement batteries with me if I'm driving for a longer duration. So far I am planning to get the following components: - Cycle analyst v3 (ca3-dp) - Q128C (I'd like a cassette motor so I can keep my 9 rear gears + cassette) - 2x6S 5A LiPos in series for 44.4V nominal, around 50V max Plus the following peripheral items: - PAS - Electric Brake Magnetic Sensing Switches (I have hydraulic brakes) - Torque arms (my frame is made of aluminium) - Three way switch to select different speed profiles (i.e. Road Legal, Offroad, No assist) Now I have 2 Questions: - Is the Q128C an ok choice? I couldn't find too much information about it online. Basically I'm looking for a <3kg motor that supports cassettes. An alternative would be the swxh2-r, but it seems to be more expensive. Also, which version of the Q128C should I get? It's available in 201 and 328 rpm for 36V or 48V. Ideally, I'd like the motor to support me up to 25-30mph. By that I don't mean that the motor alone should get me to that speed, but it should assist in getting there and not put additional load in terms of increased roll resistance/weight on me. At the moment I manage to get up to ~28mph (slightly downhill, unassisted) if there's no wind, I'd like to keep it that way . For this reason I'm considering the 48V and 36V 328rpm versions. According to some formula I found on the internet the 328rpm@36V motor in conjuntion with a 12s lipo at nominal voltage should yield a theoretical max speed of 33mph, and 25mph for the 328rpm@48V motor. Do you think the 328rpm@36V version at 44V will have enough torque for me to achieve around 15mph on 5% elevation with me putting in ~100W through pedaling or should I rather get the 328rpm@44V version of the motor? For comparison: a friend has the 11AH oxydrive kit, i.e. 15A controller with bafang swx02 code 10 (~315 rpm@36V) @ 700cc, which I feel has more than enough torque to get up hills. However the top speed he get's out of it is rather unsatisfying as I'm actually faster unassisted downhill than him. (It's that guy: http://www.pedelecs.co.uk/forum/threads/which-motor-kit-to-get-bafang-cst-or-xiongda-36v-or-48v.21169/). Of course aero dynamics also play a role here, but still... - Second question: What controller do you recommend? I was thinking of getting the Lyen mini monster (http://lyen.com/), mainly because of it's size to power ratio. However, I guess I wouldn't need a programmable controller with the cycle analyst, right? So maybe there is another smallish controller that I could rather use? What do you think? Thanks for reading, and apologies for not being able to keep the text shorter. Joscha