Endless Sphere

I have the gen 1 controller (14s 70a) , factory stock settings everything. It'll push 55a in my second-to-last gear (12t). Haven't tried to see what it could do in the 11t, maybe it'll go for 70a, I don't know. I'm satisfied with 45mph on that thing, don't need any more.

Well, that sucks to hear ab the shortcomings of the x1 pro. I haven't had the chance to push my gen 1 over 14s 70a yet, so I think I'll keep it there. The hardest I push it seems to be around 55 amps @ 55v , which holds 45mph on the bike. But that's only for <60 sec runs. Most of my riding on it is ...

Local hardware stores usually have those ratchet straps. You can have them the first day. Shopped a few places, actually. Harbor Freight, Lowes, Home Depot, Ace, ... Couldn't find any of the smaller endless loop types at a store. They were all enormous and have hooks, or were a perfect size, but di...

I've been using endless loop ratchet straps on my builds, since I transfer 2 batteries between 3 ebikes all the time. The ratchet is a little bulky, but very effective at getting anything attached to anything. https://endless-sphere.com/forums/viewtopic.php?f=6&t=102372 Got them on amazon prime ...

Okay, now this looks cool. It's like they took a cyclone motor and attached a bbshd style planetary to it. We def need to see what those gears look like. It also seems more serviceable than the bbshd, in terms of adding grease.

New anode tech: coat a porous silicon anode in alumina, then let the alumina saturate with lithium. It becomes a protective catalyst layer for the cathode, and keeps max capacity stable over 100's of cycles. So, not only do we get a decent jump in capacity, but cycle life as well. https://phys.org/n...

New little breakthrough in preventing oxygen release from reacting with electrolytes, involving a molten salt treatment to the Li-rich cathode.

https://techxplore.com/news/2020-01-gra ... icles.html

Question for ya... how did you get the cyclone chain tight in that setup, as so you didn't need the idler pulley? Seems like you usually need to be able to move the motor up/down to get that I had the idler on when I first built it. But, my 14/44T motor -> crank gearing combo made a perfect, tight ...

Does anyone have the full motor specs to be able to put on the motor comparison spreadsheet ? Any info about this motor can be found here: https://www.cycmotor.com/x1-pro and will it run on a normal ebike controller ? Yes, people were doing this before the stock controller was released with the kit...

The number of ebikes one should own is always n+1. And, a bike with no motor on it is just waiting for one. Plus, I needed to build an alternative to my hi-racer bacchetta, which was my cardio ebike for a while. Problem is, the speeds I like to ride at make regular bumps cause a fair amount of lower...

Some bumpy shaky video I took in the neighborhood. Got it up to 38mph, but I've seen 43 in other places, on only 2500w.

Light N Motion Seca 2500 Enduro. 2500 lumens for 2.5 hours, 1250 lum for 5 hours , 625 lum for 10 hours.

Yep, had a kitted guy riding a fat tire bike pulling 28mph with me, for a good quarter mile down the trail one day. Lol, that was some serious output, man. And I get the whole spectrum of sneers, blank faces, and people cracking up when I roll past them saying that I'm sorry for cheating. Around her...

Yeah, I'm still trying to figure out how to change gears on mine without crunching.... I guess slow down pedaling enough so that the PAS stops? It is strange... Okay, I figured it out: Hook up the throttle, and when you want to change gears, you want to quickly push the throttle to WOT, then let of...

On a torque control throttle wheelies will only come when you want them, and you can directly adjust torque without affecting peak power by modifying the phase current limit. That does actually sound like a better option than voltage control. You won't have to deathgrip the throttle when going over...

First off, does that sweet mtb have a 9mm QR , or a 12x142 thru axle? A 9mm QR with vertical dropouts is what you need, using two torque arms on each side. Be careful of going big on the phase amps on a 3000w motor. The frame will not like it at all, unless you engineer clamping dropouts like this b...

You can find a 6T 35mm aluminum stator 1500w at WCEC. It has around a 7.7~8 Kv.

Dude, that's totally awesome. Were you trying to do this? Were you expecting a different result?

I would also strongly recommend you investigate alternate suppliers for the battery. This is the most expensive and shortest-lived component, quality and reliability are paramount. Take a long, hard look and check out Em3EV , as well as others. +1 on EM3ev. I (will) have two of their 14s7p hardcase...

If I had a low powered hub motor, where I can use all of the gears on a multi-speed cluster, then I'd opt for a cassette version, if available. I fried the DNP 11-34T 7spd FW on my fast hub motor bike (impossible to pedal on human power). I replaced it with this 12T single speed offset freewheel , a...

Oh dear, hahaha. I very gradually tested this bike in incremental steps before ever riding like that. If the road is too rough for a hardtail, then I shouldn't be going that fast anyways. It keeps me in check for the right reasons. Florida has the best road conditions in the whole nation. I know whe...

So sorry man, I took it apart to build this one ! But, since I have built and currently use both mid drive systems , I can be of help anyways. I do not have the torque sensing bb yet. My 2 cents on the two kits in their current form on the market: The cyclone 3000: - about $200 cheaper, even with th...

Awesome, thanks guys. It sounds like there won't be any issues if I keep them in parallel for all charge/discharge cycles. The BMS has a 12a charge current limit through the XT90 discharge port. And I don't see myself using one of the packs by itself after the upgrade. This should be interesting on ...

I live in central florida. I have passed a cop at 50 mph in traffic on my 5kw mtb. He pulled up behind me in stopped traffic, and asked what endorsements I needed for the bike. This is the only cop in 12,000 miles of riding to ask me any questions. I told him, 'from what I understand, a valid driver...

Someone asked a question about charging 2 batteries with one charger,. It prompted me to ask a similar question, but with other specifics. I can build bikes, but I'm a bit electro-dumb. I have the EM3ev 14s7p hardcase rectangle pack. It has ~70 cycles on it. Just bought a second one, exactly identic...