February 17, 20179 yr hi I have just bought a west hill ghost electric mountain bike does anyone know how to up the speed I have tried but no joy
February 17, 20179 yr Ps rated powe r 250 w rpm 195 voltage 36v current 2a I assume you are referring to the charging current when you quote 2amps , the average discharging current when driving the motor will be 8 to 10 amps. If it were restricted to 2 amp the maximum power would be a paltry 72watts.
February 17, 20179 yr Author Hi thanks for reply I am really not very good at this it said rated output torque 40nm
February 17, 20179 yr A pic of the bike showing the motor and the control panel on the handlebars would give everyone a better idea.
February 17, 20179 yr Author Hi rob if you go to west hill bikes website they have brochure etc with all spec and brochure any help gratefully received
February 17, 20179 yr It looks like a nice bike. I son't think there's much you can do to speed it up as your motor is only 195 rpm, assuming 26" wheels.
February 17, 20179 yr Presumably it's one of these: http://westhillbikes.com/product/ghost/ Someone might know if there's a command to derestrict the 15mph speed limit.
February 17, 20179 yr Author That's right wheel size it is a good looking bike but was told I could bypass speed limiter ???
February 17, 20179 yr Author Hi rob in the manual under control panel info it said st2 and reset to 40 km which I did but nothing happened very frustrating
February 17, 20179 yr http://westhillbikes.com/wp-content/uploads/2016/10/Ghost-electric-bike-user-manual.pdf
February 17, 20179 yr St2 – alter the speed limit by pressing the up and down buttons. Press the mode button M to confirm your choice. ᘐ NOTE: the speed limit for electric bikes in the UK is 15.5 mph (25 km/h) Hi, have you tried this in the correct manner? Does it adjust the speed higher than 15.5 mph? If it does, did you then save it by pressing the M button for 2 seconds?
February 17, 20179 yr Hi Leigh yes I've tried that but made no difference !! How high did you save it?
February 17, 20179 yr Author It goes from 12 up to 40 so saved at 40 but made no difference annoyingly If only that simple
February 17, 20179 yr It goes from 12 up to 40 so saved at 40 but made no difference annoyingly If only that simple Have you tried a lower number. 29 kmh (18 mph)?
February 17, 20179 yr I've asked them this, on their facebook page. "I would like to increase the speed of my Westhill Ghost ebike, for off-road use. Can this be done and, if so, how? Many thanks Leigh" Let's see what they say..
February 17, 20179 yr That's right wheel size it is a good looking bike but was told I could bypass speed limiter ??? Motors spin at a maximum speed, which depends on the battery voltage. No controller setting or anything else can change that. Your motor is 195 rpm at 36v. If you do the calculation to convert the circumference of a 26" wheel at 195 rpm, you'll see that it comes to a bit below 15 mph; however, your battery is working at about 41v when fully charged, so you get an extra 1 mph. You can test if you're motor limited or controller limited by charging up the battery, lift the wheel off the ground and spin up the motor to maximum speed (use first gear). Make a note of what it is. then go out for a long ride to flatten the battery to somewhere below half-way down, then do the test again. If the speeds are identical, you're limited by the controller. If the second result is a lower speed, you're limited by the motor.
February 17, 20179 yr Chris you need to understand what is being said here. You don't have a fast wound motor, it is a slow speed 195rpm designed for low down torque ideal for hill climbing so speed will not be fast on level ground. Chances are that 195rpm is the no load speed so the actual load speed would be about 163rpm, the only way to get more speed is to run it at 48v.
February 18, 20179 yr Chris you need to understand what is being said here. You don't have a fast wound motor, it is a slow speed 195rpm designed for low down torque ideal for hill climbing so speed will not be fast on level ground. Chances are that 195rpm is the no load speed so the actual load speed would be about 163rpm, the only way to get more speed is to run it at 48v. .... Not necessarily so. Additional voltage will create additional torque and depending on the motor design could result in additional rotational speed. In a traditional DC motor that would be case. If the motor is being driven by an electronically switched three phase generator ,The speed of rotation will be set by an internal clock inside that controller, and this will be part of the microprocessor s firmware.
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