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    ebike light circuitry question

    I bought a couple of cheap front bike lights off AliExpress a couple of years back but have never fitted them (plenty of clip-on USB rechargeables already to hand), but out of curiosity I thought I'd power them up and was suprised to see that the higher the applied voltage the less total current...
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    TSDZ2 Final fitted position question

    I have installed a number of TSDZ2 motors and have always followed the fitting instructions whereby the motor is rotated to the rear of the frame to allow the fitting of the chainstay bridging block and plate (pic courtesy of @Woosh installation guide). In reviewing mid motors for my next...
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    Help! Hub Motor Parameter Questions

    Hub Motor Parameter Questions There are so many things I don’t understand about hub motors (Brushless DC aka BLDC and of the geared variety, not direct drive), so apologies for my meanderings but if you good folks could help me out here please? 1. RPM – when the RPM of the motor is given: >...
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    Help! Recommend me a front hub motor

    I’m looking to convert our tandem which is fitted with a Rohloff IGH and both bottom brackets are therefore eccentric. The eccentric clamps are castings on the underside of the BB which therefore excludes the possibility of a mid drive motor like the Bafang BBSxx series or Tong Sheng TSDZ2...
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    BMS - common port or not?

    Before I commence my next battery build I'm wondering whether to use a common port charge/discharge version or a separate charge port version? Apart from maybe the convenience of one vs the other as in reduced number of connections, space, size and so on, are there 'electrical' or other reasons...
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    Supplementary Battery Question

    I have two bikes each with a TSDZ2 (36v 250w) and a 10s2p battery (Pack A in the pic) that gives me around 45 miles in ECO mode and which I swap between the two bikes as needed. I am very pleased with the 10s2p battery (self built using twenty LG M50LT 21700 5Ah cells) and so I'm going for a 2nd...
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    Hover Board Battery Autopsy

    I think it was around last Christmas time and bored with it all I ordered up a supposed 68,000mAh 36v battery for ...... wait for it ..... £28 inc p&p Now, I had no idea what I'd get for the money but I knew that I would NOT get anything other than complete rubbish, but (a) I was curious and...
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    PSWPower Delivery Problems anyone - resolved

    Edit - Problem resolved - item arrived today unexptedly - just a glitch in their admin I guess April 2023 - my mate ordered at TSDZ2B from PSWPower over a week ago but no delivery notice as yet. They did email them and the response sort of indicated that they'd get onto (as in maybe...
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    TSDZ2 Blue Gear Grease - which one?

    As a matter of routine maintence, i.e. every 1000 miles or so, I check out the Blue Gear for wear (none so far after 3,500 miles ish). So far I've just used Weldtite TF2 Lithium Grease* when needed, which I use on other parts of my bikes. Having recently found a Tong Sheng TSDZ2 Maintenace...
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    When are cells 'in balance'?

    This is not a question about the whys and wherefores of cell balancing as I'm well versed in the necessity of this. What I am looking for is in two parts: 1. I've got a bunch of new cells ready for my first 10s 2p build and will be measuring the voltage of each cell and 'pairing up' the cells...
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    Which of these two batteries for pack build?

    I am looking to build a 10s2p 36v battery pack for my 250w TSDZ2. The TSDZ2 controller is set to a max current draw of 15A I nearly always ride in ECO mode with an average current draw of around 4A with the ocassional peak of 8A-10A in the next higher assist level. With generous help from...
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    Batteries from Nkon.nl anyone?

    I'm getting close to my first battery build and thanks for the information on here about the various options and suppliers Fogstar get the thumbs up from a good few folks but I'm wondering about the Dutch company Nkon as a source They have two web outlets - one where you pay VAT if you're in the...
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    1st Build With Reclaimed Batteries

    Well, I got a spot welder for Xmas and so I've been looking at 18650 prices and came across a UK site, (cellsuply.co.uk - link HERE) whose address is the same as nubattery.co.uk - link HERE Cellsupply sell reclaimed batteries which they say are new but with the caveats in the quote below. The...
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    What Wattmeter to choose?

    I've played around with a couple of watt/power meters (pics below) One of them I've 'built in' to a battery discharge tester and the other I temporarily mounted on the bike's handlebars so I could better understand battery behaviour vs pedal assist and so on What I found most useful was knowing...
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    Motor - stated RPM, windings question?

    My understanding of BLDC theory is poor, so some clarification on a couple of motor parameters will be gratefully received. 1. My TSDZ2 for instance, has on its rating label '4000 RPM' - what is this telling me? Is it that the motor gives its max torque at this RPM or something else? - and if...
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    TSDZ2– No overheating for me

    TSDZ2– No overheating for me Here’s my observation about motor overheating (or not). I hope those who may have been put off looking into using the TSDZ2 because of this issue, find the following useful, and of course your own observations and comments are welcome (but no repeating...
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    Review Tong Sheng TSDZ2 Owner Survey

    Apologies to those who may have read this survey on the Cycling UK forum but as there's no response so far (03May22), I'm posting here as I'm sure there will be greater interest. Intro • A bit of a long-ish read, but bear with me if you will – this is all about dispelling urban myth in favour...
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    BMS with discharge bypass - or not?

    There are a surprising number of 'lost power' issues reported on the forum where the BMS turns out to be the culprit. I have experienced the same with my TSDZ2 and 10Ah bottle battery and whilst I await a replacement BMS, I am running the battery with the discharge function bypassed. I've OSF on...
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    Battery/BMS Peculiarity

    I have a 250w 36v TSDZ2 with a VLCD6 display and a 10Ah bottle battery and the battery has dveloped a peculiar 'feature' in that: - the bottle battery has an in-built on/off switch: - if I mount the battery into the bottle cage and then switch the ON/OFF switch on, the motor will not power...
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    Power take-off from charging port

    I have a 36v 10Ahr bottle battery with the charging socket easily accessible when attached to the bike and I'm wondering if I/what load I could plug into it? 36v is measurable at the socket so obviously a current path exists from the battery back through the BMS to the charging socket. I've no...