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After a year of tsdz2 builds without a problem the last few have had niggles ,both size fat bike motors have had shorter bb shaft ,and the 2020 colour display was a disappointment .No problems that could not be quickly solved, but could have been a head ache for a first time builder my box of...

The standard bbshd up to 73mm will fit the bb ok

Try to remove the power disconnect the battery leave for a while then retry [only had this problem once on the last tsdz2 build ] Suffered a loss of confidence have recently moved back to Bafang motors

Put it back t0 16 the only settings that will change are kph to mph the wheel dia and 25kph or not all the others are pre-set to factory unless you use the open source software it can cause problems

A picture of the bottom bracket and what width it is[for the motor should fit ok ] and the frame size also a picture of triangle would help to see what battery

Thinking side ways what happens when they replace the battery in a electric car? have seen a few packs on ebay cheap will that provide loads of cells in a rack mount the prius packs look cheap

The 48v is just in another class, sell the 36v buy either version of the bbs02 48v you will not be disappointed the extra torque at 120nm is a revelation this the the way Bafang intended the motor to run ps time you fiddle with the 36v motor [on endless spere a thread describes what needs to...

Halfords do a 27.5 tube up to 2.5 inch wide four for a tenner

The deep joys of lead free solder more dry joints

If the battery will fit in the space behind the seat that will be a good use of a dead space try a flat piece of wood as a mounting board/ plate the hailong base will screw on to it and if it works make it in acrylic sheet an exhaust clamp will make a strong mounting and spread the tension...

free wheel has a thread and screws on

Forgot the relay needed a diode across the coil

Warning do not try a fat bike as your 1st conversion[ after 3 fat bike mid drive builds,] My observations perhaps this might help with a 73mm bb 100mm bb and a120mm bb all had the same problems Not for the faint hearted all have required modification and fabrication and more than a basic...

Spent the weekend with the lights and a tsdz2:confused:very low current under 3watts dim to useless :eek:needs a relay and 48v lights with direct wires to the battery hard to make look tidy

New build with 120mm fat bike tsdz2 motor problem is the shaft is 120mm wide :mad: had to adapt the frame :rolleyes:

The battery bars are a guesstimate at best, the bars can suddenly disappear its a tsdz2 thing Even the new colour display that reads volts is not accurate The range is variable if i thrash mine in turbo off-road it can run out in 35 miles, but always better than my bafang as the human effort...

Is it the speed sensor if so is the magnet aliened did it get damaged wire broken? what error code is on the display

Prolonged abuse at high temperature is made far worse if it is a hot day, and hill climbing in the wrong gear :mad: if you need turbo mode all the time it is probably in the wrong gear Be careful in the largest cog on hill starts [if a 42] and in turbo mode wheelies /180 back flips if you...

The super long tsdz2 open source thread on endless sphere, contains many suggestions and modifications included is a temp sensor Rule of thumb it shows a power loss :oops::oops:but by then it can be to late use one gear bigger than you think you need and pedal harder , its more heat if you...

With both settings at 10 it will not work correctly [as in the screen grab ] do you get a speed on the display? Unplug the brake sensors and gear cut out and try it Any error codes on the display