Shakes

Here is a diagram of the black box, if it is of any help for those who may be interested in considering something similar - I think I will go for a Y splitter for discharge and build an additional charger port for the second battery to charge through.

[bump] Anyone? Anything?

Dear All, My small foldable eBike currently has a very simple 36V 18650 10S2P 7Ah battery with an XT60 discharge and a 2 pin JST charge port. Within the bike casing, there is room for 2 batteries and I was considering what would be the best approach in order to install them potentially. As for discharge, should I be looking to get simple parallel cables or battery discharge boxes? Unsure of the differences here. As for charging, the bike has one universal? 9mm exterior charging port and I was really hoping to be able to retain this aspect in a way in which both batteries can be charged from one cable - perhaps a custom parallel JST connection internally? I understand this would be liable to current issues but I am unsure again. Thank you for reading and any help is appreciated.

I have ordered a flywheel and will keep the thread updated.

Dear Nealh, I am more than happy and able to machine out the fins in order to fit a BMS BB. I believe I am at a point in which I have invested a significant amount of time into this bike and I feel as though I would like to make it work, if it were possible somehow

Dear Nealh, I am more than happy and able to machine out the fins in order to fit a BMS BB. I believe I am at a point in which I have invested a significant amount of time into this bike and I feel as though I would like to make it work, if it were possible somehow

Hi, I understand it is a compact bike, from my judgement, I can see (and hope) that the pedals shouldn’t hit the ground, especially when dis/mounting lowered curbs. I am also potentially considering changing the entire rear hub for one which can accept a freewheel more easily.

Hi, I understand it is a compact bike, from my judgement, I can see (and hope) that the pedals shouldn’t hit the ground, especially when dis/mounting lowered curbs. I am also potentially considering changing the entire rear hub for one which can accept a freewheel more easily.

I thought my picture captured the threads but I was originally under the impression that there were threads already present - can be felt when running my nail across the ridges. I always assumed any freewheel of that diameter would fit but on second thought, I am beginning to see how that may not be possible given how sleek the threads actually are. Having seen your webpage, I am also currently considering perhaps getting a different rear hub motor which can accept a freewheel more easily - your well documented install may be ever so slightly outside of my abilities!

I thought my picture captured the threads but I was originally under the impression that there were threads already present - can be felt when running my nail across the ridges. I always assumed any freewheel of that diameter would fit but on second thought, I am beginning to see how that may not be possible given how sleek the threads actually are. Having seen your webpage, I am also currently considering perhaps getting a different rear hub motor which can accept a freewheel more easily - your well documented install may be ever so slightly outside of my abilities!

Hello All, I currently own a CityBlitz CB020 operating at 36V 250W. It came with static BMX pegs from factory with no chain. I would like to add a set of pedals and a gear/ chain setup to begin to make it slightly more legal and road worthy (can move on to the pedal assist sensors later). As I am new to this, I have no idea what parts I would need and where would be fastest (maybe not China) to source them from. I have included a few photos and dimensions of things in which I believe could help others if anyone is able to guide me and provide me with links of things I would require. I have watched a few YouTube videos of people doing similar things but I am still unsure on what spec of things I personally would require. Thank you for reading. Any help appreciated.

So I'm assuming the solder mount starts from point D going upwards at length 20-30% of distance between B-C or A-D. I shall await your reply.

Thank you for your reply - Can you please show me where the shunt is and which side to solder on to?

Dear All, Upon my not-so-recent purchase of a City Blitz CB020 with a 350W motor [mention=22943]36v[/mention], I was wondering if I would be able to alter my board in any way to push more power to the motor? I appreciate I will be limiting my battery life and limiting the lifespan of the motor if I am able to overclock the wattage. Please find attached photos of my board. Thank you in advance.

Thank you for your very detailed reply with figures and values. As a man of maths and physics, they are very much appreciated. I’d like to start off with the fact that I know rather little about this topic and please do correct me if I am wrong in what I say further. My original dream project idea would have been as mentioned above but I did not intend it to be easy to achieve or even possible - it was a starting point for me to begin to understand how I'd like them to work and what they could do. Barring practical ideas of wheel spin (effects could arguably be reduced talking strictly from throttle control response perspective), in the event I am able to fit a 500W motor into the rim, would I be able to do a parallel connection to the other motor from the one controller in order to receive the same current and voltage across both hubs? I understand there will be 1/R resistance issues but will that be an impedance in what I am hoping to achieve? I can also understand that the present battery most certainly will not be capable of doing what I would like for it to do, especially whilst maintaining an acceptable range - I am prioritising power in this current case scenario as I don't rely on the bike to take me certain distances, more for a fun leisure project. Would it be easier for me to purchase a ready-made battery supplying a good amount of WH // AH or build my own one out of 18650s?