Endless Sphere

Could look at something rugged prebuilt like a juiced ODK v3. Has an option for a long range battery pack and a 500-1000W bafang front hub.

That corrosion looks very bad- rip out those caps and replace

What’s the difference between a 10 speed derailleur and 8 speed? The shifter determines the shift distance so is it just the width of the chain guide and jockey wheels etc?

For what it’s worth the cyclone kits have been rock solid for me. Not exactly subtle or elegant though and the motor mounts are the weak point of the kits.

if it's not getting warm then by definition it can't be wasting much energy as heat. and if you're only using 60V with caps rated to 63V that is still within their rating, no point in changing them out!

Only fits a fat bike tho- and then there are about 3 different dropout ‘standards’ for those. (Hub is 175mm OLD)

Fullofhope wrote: ↑

Dec 30 2020 9:38am

I'm simple guy from Denver.Wish you good day:)

Happy 2021 from New Zealand

They like being warm in my experience. Performance was greatly improved once the cells were 30-40C which is probably why they have higher measured capacity. Cycle life of the A version is dependent on 2 main variables from my experience- slow charge (1A per cell charge rate or less) and a rest betwe...

Out of curiosity where did you get the cells from? Mine were from new old stock toughbook packs.

Spec sheet has a 3C curve rating published so presumably its tested for that rate.

Ran some new ncr18650a a while back 14s 5p pulling 1500W with occasional 50A peaks - it sagged a few volts but only ever got slightly warm even at 3C. Measured the capacity and internal resistance after 100 odd cycles and only a few percent capacity loss and no change in IR. Really good cells in my ...

You could but the 21700 is 21 mm in diameter as opposed to 18mm like an 18650. So it won’t fit in your bike. What’s wrong with the current pack- looks like it should do 60A peak or so? Also the usual disclaimer that There’s serious danger of fire/ explosion if you short out multiple parallel high po...

If you’re only using 3P for around 50A load they are going to be getting pretty warm. I would use a metal case rather than plywood (with appropriate insulation of course.) also wrap a layer of thick pvc insulation tape around each cell to give it some shock protection against a short circuit to the ...

14s 4p is 56 cells- you need another 8. 5 parallel will give you more range and a bit more pep due to less sag, but if you’ve already bought them then don’t worry. For a data point the older version of the NCR cells was incredibly reliable for me and handled 10A peaks with no issues. 100s of cycles ...

Looks like a cyclone 3000? Someone might have a burned up one they can extract a magnet from for you?

Could look at vtc6a 21700

Is the throttle response good? Many cheap controllers have nothing happening for half a second then full power. I’m trying to find a cheap controller that has instant throttle response but not much luck so far?

Looks like cyclone is selling a 330mm disc with 6 bolt brake mounting and bcd chainring holes. It’s 3mm thick though which means it won’t work with bicycle calipers I would think? https://www.cyclone-tw.com/product/14/data/73 Looks like they also do a plain adapter too- https://www.cyclone-tw.com/pr...

BMSbattery has been a good supplier to me so far; shipping is screwed because of COVID tho. :edit: all arrived safely! Recommended

Should be fine. That YouTube guy was running 2 packs in parallel with a sketchy circuit which probably caused the issue. The main thing with Chinese cells is cycle life- they aren’t quite as good. If you’re really concerned then just don’t leave it charging unattended and always turn off the charger...

With some effort, I would suggest using Bafang FAT motor machined to fit 135mm dropout like I did. You will save money on motor purchase and gain a way more torque with slight motor weight increase compered to GMAC. My modified Bafang FAT running at 78V battery is holding 3,5KW peaks no problem. To...

Assume you mean Nickel strips! They have ratings posted for continuous current.

So are the 4 packs going to be connected in series parallel? Creating a large 26series/10parallel pack?

Are there any other 135mm hubs or only the 212 v1.12? Anyone used this hub successfully with a 26” wheel?

I think I have demagnetised my old cyclone 650-1680 as it’s far less powerful than it used to be and just wanted to try replacing the rotor before giving up. Location is New Zealand, will pay postage if not too crazy.