Recent content by jur

When I connect, the buttons are greyed out unless I connect it to the motor cable. So if your buttons remain grey then I am guessing there is no comms between the motor and the module. If your display unit still works correctly when you connect it to the motor, then you haven't damaged anything.

You could fix it with a helicoil, which is stronger than original threads.

Adding to that, a 36V motor generates less volts (ie lower back EMF) than the 48V motor so at the same voltage applied by the controller, the 36V motor would top out at higher speed than the 48V battery. However, because a 36V motor has fewer turns on the field coils, more current is needed to...

My Apologies. I am an electrical engineer and I ran off with what I am familiar with. :) A 36V motor can be exactly as powerful as a 48V motor. Say for a given power (watts) the 36V motor would take a proportional higher amount of amps compared to the 48V motor, because watts=volts*amps. To...

The reason that rotational speed is also a factor, is because as the rotor rotates, the rotor magnets generate a voltage on the field coils that is effectively opposite in polarity to the voltage applied by the controller (called back EMF). The higher the rotational speed, the bigger the back...

A previous poster reported a broken main motor shaft. That would correspond with a clunk and then no further power delivered.

I have tried fruitlessly to set my wheel diameter to 19" in the cfg file but the firmware seems to ignore that cfg setting, using the display setting instead. The display setting jumps 2" which gives an up to 5% error which is my case. Am I doing something wrong or is the config value always...

I have found on both my BBS02 and wife's TSDZ2, my average commute speed increases modestly, say 5km/h, but simultaneously, my effort goes down. So in all, my overall commute time is quite similar, but I arrive less sweaty. So I think ebikes aren't saving much time, but saving much effort. If I...

I have been commuting with mine (Melbourne), and been using it on Tour setting. Occasionally on Speed. Almost never on Eco. For pulling away, i have been a little careful not to have my pedal at high 2 o'clock position (which is my habit from years and years of commuting and other cycling), or...

Battery current is the average of the phase current yes; but the phase current is a vector whose components are the real current, transfering power, and the reactive current in the inductance. In the ideal motor, reactive current is zero. We might be able to come up with an iterative procedure...

Actually, while cycling to work this morning I realised something important: We don't have the I to plug into IwL! That is actually an unknown quantity. The only thing we have is filtered average battery current. So back to analysis for me...

You are right, the value must lie between -1 and 1. According to the pic I analyzed, , V must be bigger than IwL. Even for pic 1 just before it, same holds.

The plastic washers are to go between the XH18 gripshift switch and your handlebar grip, to reduce friction while operating the gripshift switch.

Great work, casainho!! :mrgreen: Congratulations also on being able to hack the TSDZ2 controller code - that is a great step! Regarding the LCD3 display, the XH18 is actually much more versatile - it is a complete blank slate, no predetermined fields that you have to use. You have a high-res...

I also found rather large slop in the crank arms perpendicular to pedal direction. Yesterday I was servicing the chain and noticed a similar but unconnected slop in the chainring bearing. I think either the bearings are poor quality or the mounting arrangement is non-optimal. I think there was...