Endless Sphere

Damn I’m slow. Was going to do 3x spokes on the hub but with it being a 20” rim I’m thinking the spoke angle would be too sharp. Is 1x good enough or 2x? 36 hole Mac motor Cross-1 lacing is probably doable with a MAC. When I've laced larger diameter motors like Crystalyte H series or Leaf Motor to ...

SlowCo is right. You'd be better off with a Bafang BBS01 or other 250w crank drive that with any kind of hub motor. I work with a lot of electric assist pedicabs (there are over 500 pedicabs in my city, all of which are allowed to be electric if the owner desires). We're allowed to use as much power...

Easy to read, auto start and stop, wired is okay, trip odometer, speed, average speed and total miles. Don't need cadence on the ebike. If you get a motor controller with LCD display, you'll have all these things plus state of charge, possibly power output, and possibly battery voltage. Costs a bit...

want to build wrote: ↑

Oct 27 2019 12:14am

What can i do to protect le longevity of my hub?

Winter in Belize.

"What makes a good commuter?" Dual suspension for a comfortable ride. Reliability. Meaning rigid. Quick enough to out-accelerate almost everything to create a nice safe riding space in front of everyone. Reliability. Meaning modest power. Fast enough to pace traffic with headroom to spare to accele...

But real bike shops sell single replacement cranks all the time. Sure thing if they have spares laying around from take offs, they still however usually can't purchase singles same as manu's don't make and sell singles https://www.jbi.bike/site/search_detail.php?x1=CRANK+ARMS+%26+SETS&x2=LEFT+HAND+...

I now have a Velocity hub with excellent bearings. I always buy extra bearings because they may stop making them. Since when? Most bearings used in cycle components are industrially standard parts that will be available long after the parts they go into are out of production. Some of the weirder be...

Drop Dead Fred wrote: ↑

Dec 07 2019 10:20pm

[...]but still makes no difference that one is missing and I need to purchase a set because no one is going to sell you a single.

Maybe. But real bike shops sell single replacement cranks all the time.

While I've never sat in one, it looks like outside visibility is crap. From the demo ride video I saw, it looks like forward and side visibility is good, and rear visibility is pretty much nonexistent (but furnished on-screen by a rear view camera). All the better for self-entitled douchebags to ru...

My 20s EV lipo can burst 95 amps through the shunt without blinking. ~80v. Its fun. I feel so bad for people with 30-40A max packs. My pack made of car cells is supposed to be good for 300A continuous, 500A burst. I use a 35A controller, so I use a 35A rated BMS. I haven't measured actual peak amps...

I wonder why you presumed to know my feelings about it, if any.

Sure. Lock Picking Lawyer probably wouldn't take any longer than that to get into my house. But never once in more than 30 years of urban cycling and bike shop life have I ever even heard of a bike thief picking a lock. There was that brief episode many years ago when it was discovered some round ke...

Next time perhaps you will remember to use a U-lock. Even the shabbiest of those would not have given it up so easily. Next time perhaps you will remember to not be such a dick about someone's misfortune. So pointing out an easy, inexpensive measure that would have foiled the theft shown in the vid...

Next time perhaps you will remember to use a U-lock. Even the shabbiest of those would not have given it up so easily.

Hi, does anyone know of the correct spoke size for a 19" rim and MTB hub and qs205 Hub and 19" rim?Both running the standard cross pattern lacing. There's no standard lacing pattern. You need to know how many crosses per spoke. Cross-1 is usual for hub motors. The effective rim diameter varies per ...

TY for insightful replies. Looks like we need to get more aero and more efficient motors at high speeds and bigger batteries. Given that the more efficient PMDC motors are above 90% already, how much more do you think is reasonably available there? It's a dead end. Noisy, energy hogging and murdero...

What's your application? It seems like those would be inferior to a street tire on pavement, and inferior to a downhill MTB knobby on trails. Prepared dirt tracks are a specific kind of surface that you don't encounter outside of dirt track racing. If you just want something tougher than a bicycle t...

So if im running 48v with 750 watt motor thats 15.68a, I would be better off getting a 20a circuit breaker over a 15a wouldn't I? The motor has a 750W rating, but in fact it will burn up as much wattage as the controller can stuff into it. The controller has a maximum current rating, which may or m...

In the past, I've used maxi blade fuses for values up to 80A. They are cheap, and so are the holders. For what it's worth, I don't use a fuse protected pack at the moment, even though I built my own pack. Determine your pack's maximum current rating, and use the next higher value fuse for short circ...

The difference between tabbed washers and flatted axles alone isn't much, but it's a large relative change from one to the other. The bare axle in a snug fitting slot applies torque at two points, both at a radius of about 5mm. A tabbed washer moves one of these points out to a radius of 12 or 14mm....

ive been looking to make 451 wheels and I wonder why you say they always do the smaller 406 with motors? It's a hugely more popular size, with better tire and rim availability and size range. Everything for 406 is cheaper and easier to get than 451. I assume doing the 451 rim with the hub will be f...

userix wrote: ↑

Nov 24 2019 2:27am

The power cables are 8awg, which I think is too small as well.

If your power cables were the main problem, it would be the cables that got hot, and not the pack.

Yea I know there’s longer reach brakes but one of many things. Schwinn 20” size rims being smaller I wonder if a problem for the hub and I’d rather get the slightly bigger rims instead. Any Schwinn-specific rim sizes were gone for good by 1982 at the latest. There are only two 20" bicycle wheel siz...

Enviolo bought all the cycling-related assets of Fallbrook. I thought this might mean the product line was gone for good, but recently I saw a bike with an Enviolo "NuVinci" hub. So they are making stuff. Anyway, that's the company to talk to about it. I don't know anything else about them. https://...

They are ok. Error codes happen Sure they do, but it doesn't exactly build confidence when they're contained in the sales literature for a multi-thousand-dollar product. Busy and highly competent people who aren't in the website business often have more important things on their plates. If I'm deal...