So 6 months down the line and my motor has gone again.. same issue crank arms slipping round with no drive.... I have been eating a lot of spinach lately tho.
its been a while. Grown up duties taking all my spare time. However tonight I finally cable tied the range extender to my bike and took it for a whirl.. nothing caught ? or exploded so I'd call that a win . It needs a few little bits to finish it off but I'm pretty happy with it. ?
Still not finished but it's getting closer. This is a 250wh battery in the smallest form factor I could make it. It has a bms and a battery meter that will show voltage or capacity percentage.
Bike Year: 2019
Manufacturer: Maxxis HOOKWORM 29x2.5 The biggest, baddest, street tyres for your E-Bike
Model: Maxxis Hookworm 29x2.5
Asking Price: £50
Description: These tyres are bran new. As you can see from the picture i did not have the clearance on my 27+ frame to run them. (They...
Yes, valid point lugging around a full battery is a going to be a right pain.
But, as far as the electronics side of things go its easy to be woo'ed with techy phrases. None of these guys have done anything new. For years touring e- bikes and commuters have been parralel linking lipo packs...
600 euros for a 20cell pack!! For an extra 100 bucks you could get a replacement battery from spesh and have 50%more range. I'm not doubting it's going to be a well-built device that will work perfect, However as long as the batteries can be balanced charged and a good quality reverse current...
Hopefully below is a link for an ideal diode designed for e-bike battery packs in parallel. These are more expensive but have practically no voltage drop across them compared to a Shockley diode...
That is all steller Information, thanks ? although I'm an auto electricion my electronics knowledge is limited. Schockly diodes I was also looking at, they leak reverse current so they will actually help keep the packs stay balanced. Doing rough ohms law I reckon diodes will scrub about 20watts...
Well that answers my question about the spesh bms not blocking reverse current thanks. That's interesting that the battery went into charge mode. Do you know what voltage drop you saw over the diode? How much heat does it create? Did you splice into the motor cable or did you make a custom...
I've almost finished my 10s2p range extender. It has light sockets built into the case. Its slow going as i'm super busy at present.
When i have finished it ill post up some picks...I have two weeks off over x-mass, I aim to get a couple of working prototypes out to friends then hopefully.
I...
be careful when you order these packs from china as you experienced it was low on capacity. the cheap packs have cheap cells with wild figures attached to them. A good quality 18650 cell will weigh 45grams and have a limit on capacity... I wont bro science the numbers I cant remember them now...
Might have to smuggle some in after Brexit!
I thought the specs looked quite good on the enduro line. This is the kenevo equivalent it has 180mm, better wheels and tyres than the kenevo and a bigger battery. I have to say I think it looks better. I too would love to ride one. On paper I...
No the cassette had chewed the drive splines on the freehub body. So the cassette was slipping giving the exact same symptoms.
I just jumped to the conclusion it was the motor after having one fail a week ago. But as the internet is full of horror stories I thought I should set the record...