Endless Sphere

That dual disc hub is not cheap, They can be handy for making a non peddle high power bike as you can retain the disc and have a geared drive with the option of retaining freewheel at the motor sprocket if required at the cost of regen. I like the idea of placing the oset sprocket on the disc side r...

Who knows how the guy drove the car or his regular habits, He may like to run the battery dead flat regularly and then enter ludicrous mode hot straight off the super charger. Admitted the cars gonna analyse it's data and limit power according and also cool as needed but these cars do get a lot of a...

I was dead careful removing my stator after cracking my a2b motor case, Even then there was a little graze to the laminate on one side of the motor, with out and industrial strength clamp and hydraulic puller it's damp hard to get that rotor out, It's not happening by hand. I used a 3 jaw puller to ...

The inspection will happen for the same reasons every other car in the uk does after its three years of age, corrosion and metal fatigue, general aging of rubber suspension components and alignment the list goes on, granted this is of concern to both ice and electric cars. I'm no hater of the tech t...

The new 21700 cells have less cobalt in the cathode and its replaced with nickel, From what I gather it raises the energy density of the cell but has less reliability, so you can say theres a cost vs safety factor and the higher capacity cells look more attractive on paper but in real life not so mu...

I've gathered a bit more information on the laminations of brushed dc motors vs brushless ac turns out AC lam's are not always insulated as the oscillating current keeps the eddys small or so I've learnt, but you seem to have snapped gone quiet and not looked back bit like my missus really. It takes...

Seems I'm not the only one that has nightmares while Im awake. I like the direct drive option you shown in fact thats the basic design of my next build with #219 chain. Only problem I can see with that will be getting the reduction drop you require a small wheel and large sprocket would be needed bu...

Screenshot_2018-06-16-04-02-36.png I won't reply through PM to your baiting, I offered my advice don't like it then that's your problem not mine. Pictures of the issue may have help show your situation more clear in the beginning. I advised on your discription same as another member as it's a commo...

I'm not a nay sayer, I do a lot of motor work and could give some good point's specially on coil layout minamizing end turns and soldering to enamelled wires but I've give my 2 pence and rather than give assurance you insult so all the best butty, if your looking to rewind what do you need to know t...

If a motor has melted it's insulation from a overheat situatuon then it's a fair assumption that the magnets have been exposed to heat well above their 120c max recomendation. What does this mean for their health? The magents field strength will have reduced resulting in a motor with less initial to...

Be a while yet it's on the drawing board at the moment, I got a lot of projects around me half I'm gonna throw out and get some space back.

Op this week so I'll be quiet myself for a while.

Mountain bike rigid rear end frame, motor mounted above the wheel in behind the seat with a dual chain setup to the rear, Motor direct to hub no freewheel with regen on #219 chain and sprocket using a lmx motor 3kw nominal and 10kw peaks looks just like a big block to me not sure on kv of it, I'll b...

I was having bit of a laugh with the zero motor unless your luke live for physics he shoved one in a bicycle. I'll say 1 good hub that does the lot is better than two that can do the job for two reasons. No1 there's only one set of efficency losses vs 2 plus the added wiring etc. No2 The front fork,...

Go all out and get a zero z force motor and feed it 70kw with a custim igbt driver board and let the sucker eat, oneday I will build an IPM based supermoto and I'll fling it about getting pussy wet like I'm on miami vice. I had a guy hate on my electric bike, his missus was like well I like it I wou...

What's happened with this project now the summer has come around is the old girl out in the sun ?

Cost of the build is as far as you take it and how good are you at getting a deal, I payed £230 for my a2b metro another £270 on a mxus another £100 for a Bluetooth controller, £70 front and rear moped rims £145 for front and rear spokes/nipples then there's the never ending list of changed bits, gr...

It's doing well, still at slow speeds so I can match the top speed peddling, I've got a plan to push the chainset up in size and swap the cranks out to get me upto 30 mph peddling and run it off 48v it don't sound much but when I'm climbing my local mountain I leave the lycra lovers for dust even at...

Are oset sprockets available in the us, They use a 6 bolt disc pattern and 219 chain.
There might be a disc to sprocket adapter available.
I'll be honest I lost you miles back on the build but still following any help Ill try my best.

That's looking good, I think it's the simplest option you had on the table and should be the most robust, How's the ride coping most of my builds have hit a wall so I've been taking many steps back and I've wasted some cash lately but there we are that's life, glad I still got one my rides working o...

There's confusion I feel on the amount of drag a dd motor has, I still roll on the flat very well and my climbing ability is great, Undervolting just makes the torque drop of earlier and lowers the top speed so my mxus for example would not start to reach efficency till 35mph at 72v but with 36v tha...

I listed my rides specs further up the page, I'm due an operation ive had one cancelled and put me on antibiotics just yesterday so I'm no athlete at the moment but all day I've been dropping drop handles climbing my local mountain with my bike it's amazing having a steady 15mph climbing pace anywhe...

Freewheel and all that weight sounds like a disaster, I've got them freewheels in my scooters and I dumped them in the end and went direct drive they where to fragile for my torque needs and your ride is a lot more heavier I find my scooter rolled just as well but there are instances with a strong m...

Ebike.ca Praise the Lord. Amen. With out that site I would not have laced my own wheel or worked out my efficency levels to a fine tolerance of perfect. It's astonishing how accurate the chart is, I can plug all my specs in a get very close to my actual power usage and the rating of the bike with th...

I'm not sure what chalo's means by there I think when you divide the torque up among the 36 spokes or what ever you have the load they carry will be low which is fairly correct. Hit a big bump on the way up mind and it could deform the rim theres more chance of that really through overloading than r...

Good advice dogman. 3k 4t mxus gets the job done for me in a 16inch moped rim, I'm feeding it 10s 80 phase amps (1500w) and it gets the job done easily I climbed some crazy shit and never even got mildly warm, It's geared for me to peddle along upto 20mph on single speed, I cruise it at 10-15 and ge...