Recent content by James Broadhurst

With the 850 display the solution is reprogram the display. Very rare. Never happens with KT-LCD3!

Most probably one of the LM35DZ leads are touching the motor casing and likely to be Vcc or Vop.

When charging, the charger should be connected to the battery first, and then connect the charger to the mains. Upon completion or on any other occasion, the charger should be disconnected from the mains first, and then disconnect the battery from the charger. In the first case, with a...

Is the error you’re referring to about <1.0 volt? Accuracy isn’t one of TongSheng’s priorities. It does mean that the low and reset voltages have to be set accordingly. I complained to a Chinese supplier that his product’s stated performance was well short of the actual and he replied that his...

Please have a look at this photo of a main gear fitted to a brand new 48v 750w motor. There is a 4mm diameter keyway, for want of a better description, machined into the main gear bearing housing with a matching keyway machined into the outer diameter of the sprague bearing. I’ve been around...

v20.1C with Imperial units: the wh/mile calculation shown on a 850C display are much too low and the graph of wh/mile is painted red indicating excess values. The calculation of wh consumed in Battery SOC looks to be correct. SI units are all correct. I know its technically correct to display...

Are you using a throttle?

Hi The supplementary configuration for 850C etc describes the Torque ADC step thus "This parameter is not used for the calculation of the human power shown on the display". I get Torque ADC step to be 42 to 43 on 3 bikes and the human power 850C display readings feel sensible. Is your view the...

Well! with 52v battery & 48v motor and 850C was a revelation. Superb piece of work. Approx 6wh per km over 40km @17kph av over gentle road with one big hill which I thrashed up it with the temp staying below 30 (very cold here for us - just above freezing but wind chill at least -4) All on a...

If you’re using an LM35 in TO92 package I had a similar problem after almost a year and it was one or other of the pins making an electrical contact with the motor case.

Sorry to read of your troubles. You’ve nearly done all the things that I’ve done but at least you must have got the bottom bracket of to fit it which is more than I did on one bike. I use a Shimano rear derailleur with a clutch which applies tension to the chain and I’ve done thousands of miles...

Hmmm ... that's exactly what I did. I loaded v19.0 with a 48v battery and all is well.

I'm thinking of building a 48v coaster brake motor (they only supply a 36v) by using a normal 48v and locking by some means or other the sprague clutch. That should work?

Ditto with the 850C display. And agree with you about start response.

Many thanks to all who contributed to getting the lights to work on v1.1.0 That means I’ve got two 850C displays which can now be used at night!