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I am making a 48V battery using 18650s or 21700s and am wondering how to work out the fuse specifications most suitable to my use. I would like to use PPTC fuses. Thanks folks.

I remember an issue with off centre pedals because the motor on the outside of the frame. It’s been out a while now and constitutes a flop.

It is a chain tensioner and needs fitting on vertical dropouts . Excellent low maintenance and a correct chain tension at all times. A drop of oil weekly if I remember . At 2000 miles it’s like new. My horizontal dropouts use spindle tugs , easy but another tedious task . However it’s easier...

Get the BBSHD instead of an S02 or S01. I hear the older design burns controllers.

Yes great stuff exactly what I was thinking . As long as it keeps nice and dry rely on previously learnt skills at least you know the result will be what you want. I Was wondering cover the assembled battery cover it in expanded foam file/ rasp to my shape seal it then encase in fiber glass...

I’m thinking of a 14 or 15 s system and using my normal 48V, (54.6V) charger 14s = 58.8V and 15s = 83V. The idea being to 80/90% charge up longer life. Preparing the cells for assembly is a drawn out affair. Testing all the cells first . Internal resistance, capacity and voltage to be...

Yes I read the Tsdz2 36v is one of a kind the 48v is another kind. 36v type doesn’t like 48v because heat builds up. The 48v can take 50+ v and runs cooler , revs more , and increase power.

Hello,the issue of mids needing to be in correct gear . Well yes and no, no longer are zillions of gears required Motors make more power and torque than a human . X-rd3 - Truckrun M-05 500w (BBS02 type) 145Nm no hill too steep 30 kmph easily. I drop into first gear for the steepest hill...

My X-rd3 and X-rd5(w) both change gear on the steepest Snowdonia , has to offer . I change up hill I take weight off chain indeed the X-rd3 has a gear change sensor that stops the motor while the shift takes place. I change stationary and down hill too easy easy peasey what ever. If you find...

The p5 sram internals can be bought from Holland Cycles £135 complete new innards but I have read they are no longer made and arnt that strong in comparison with other products . Sturmey Archer C50 C30 are tough as is their 3 speed fat hub . Mine is a beefed up X-rd3. Old hack before electric...

That’s my name @hotmail.co.uk I like my bikes and now my e bikes. But of electric I know little. A pedagog and a student. I like to listen, learn and relay. Tsdz2 , M01, M05, Truckrun and Bosch CX, an interest in programming and electronics is where its leading me and the gap in my knowledge is...

Been looking at Speed Box3 B- Tuning for Bosch cx gen3 . Fancy the iphone app model. I notice theBosch cx gen3 S - pedelec at 350w is the same 250w motor , the only difference being the software. But another different aspect suggests the 350w S pedelec version though faster has a lesser hill...

Hi I have 48v tzds2 for a year I like . The battery came with the kit and connects to the motor with two wires black to black, red to red. No probs great. Now I have 48v Truckrun M01. Purchased separately I was hoping to get another battery base, and use the same battery for both bikes...

Open resources reprogramming firm ware developed for those who want to alter aspects of their systems deals with voltage changing. Never.done it myself but loads on google about it BAFANG colour screens can replace black and white and introduce more functions too.

Pashley Sovereign 5speed wide ratio sturmey archer rear hub 24t , front is std 42t thumb throttle option fitted works well with a little pedalling to assist up gradients . Works well if throttle ignored and on pedal assist alone . Brilliant hill climbing ability , easier and faster than my...

sounds like the best option is your LBS there is higher quality. most only fit it once, so get it right

on my Pashley Tongsheng 5speed X-RD5 (w) keep 42t chainring and reduce teeth number at the rear. Woosh void warranty if the end user fits a larger chainring than 42t there are loads of sprocket sizes 13t - 22/24t, that will make it harder to pedal and go faster too , i place hill climbing...

hey i got an ebike not a tardis and am unlikely to ever have one . sorry but i googled ebike motor kits that's where my interests lie, but if you could zap into the future and bring us some batteries back please let me know

Details are what we need to obtain optimum performance.I was ill and now equate to an old engine with worn rings and a lower compression ratio no longer can i pull original factory gear ratios. Because my rings are obsolete and unavailable, the only option left is to lower the gearing (so i can...