Endless Sphere

I wonder if there is a way to keep Daunti in the basement? No need to ruin all of ES. Given the number of actually valuable contributors who’ve been banned permanently, it does make me wonder why this chronic polluter is still here. It’s not like he redeems his bad behavior by providing lots of goo...

Freewheels usually top out at 14 teeth, whereas cassettes usually top out at 11 teeth. This makes a huge difference in the high gear ratio. If you snoop around eBay, Amazon, Aliexpress etc, you will be able to find threaded freewheels with 11-34 gearing. I wasn't able to find less than 14T freewhee...

Unfortunately 53T really doesn't help enough decrease my cadence at speed to warrant the hassle or cost. One of my e-bikes (a 29er) has 190mm cranks and 52/13 high gearing. I can spin along well up over 30 mph on that bike— I hit 39 mph downhill on it just the other day, while pedaling with it. So ...

for a road bike I'd built my son, I put a Ultegra 53-39 with 175mm cranks. not sure I've ever seen any larger than 175's, too long of a crank will slow down how fast you can spin, and you get more power from spinning fast than from strength, plus your knees will appreciate it when you get older. an...

My problem is only with gearing and crank length. Anything over 22MPH and my legs can't keep up in the top gear. The lower 67% of gears go unused. Is there a good source for a crankset with >55T and ~190mm crank length? Unless it wasn't clear by the Walmart bike, I can't afford $400 solutions. I’m ...

mbgjt1 wrote: ↑

Oct 20 2020 1:23am

I live in a very hilly area (most roads at 45 degree gradients).

You do not. Try again.

If you overestimate speed like you overestimate gradient, you should have no problem meeting your criteria.

markz wrote: ↑

Oct 19 2020 2:00pm

I am much taller then you and even I have plenty of leg room in a Smart Car,

I don't. But that's not unusual.

Just like car designers are willfully blind to what they inflict on the world, they are willfully indifferent to folks outside the middle of the bell curve.

To put things into perspective I have more things fail on my bike than I do the motor, so I guess on a bike measure of relaibility,the motor is more relaible than a bike. Some; not all. Surely there are many garbage bikes that can't cross the street without a problem, but most people who own them c...

Problem is you need 20 series groups, and even using powerful cells you’ll still want 4p; which is 80 cells- a big mass of batteries to hide on a frame. You can readily buy a 70 cell case which allows 14s 5p without looking like a science experiment... Hi! You don’t have to use flashlight batteries...

many bicycle riders never exceed a cadence of 60 rpm... does that mean they are not 'cyclists' ? Any pedal assist system that stops just as a real cyclist is getting going should be rejected out of hand. There are other reasons TSDZ2 should be rejected out of hand, though. It's the laws of physics!...

That's a typical amount of runout for most inexpensive bikes. When I do tune-ups, I usually align the chainrings gently with a rubber mallet to make the front derailleur work better with less rub. Because you don't have a front derailleur, I doubt that amount of runout will have any adverse effect e...

Stopping power can be better with V-brakes than with discs. Controllability can be much better. But it's dependent on choice of pads, choice of levers, and expert setup. Suspension components are deciduous, and fall out of support more quickly than legitimate bike parts. So that's a concern when buy...

I had not heard of lightest.bike systems. I hope they work out.

If you're building a bike for exercising and like pedaling, why not build something lightweight with proper torque sensing assistance to keep the bike feel? Until there's a reliable system for DIY torque sensing power assist, I'm going to recommend against that. It would be nice. What we actually h...

for really big long range cargo bikes, does anyone use LiFePO4? Most e-pedicabs I'm aware of here in Austin use LiFePO4. Those are really big, long endurance cargo bikes. They have an abundance of weight capacity and space they can spend on big heavy batteries. There was a large destructive fire in...

i was told you can setup a regular one direction throttle ( with three wires) to do regen by calibrating the throttle so acceleration starts beyond the beginning of the throttle range of motion, so youre essentially braking when the throttle is anywhere but after a maybe a 10 degree twist. this is ...

Hummina Shadeeba wrote: ↑

Oct 16 2020 1:45am

i ordered 5 of these!
https://www.alibaba.com/product-detail/ ... 28818.html

its three wires. they'll put any plug on you want. they ONLY sell in small quantities strangely.

Explain how three wires can do that, because I can’t figure out how.

Kaidiba wrote: ↑

Oct 15 2020 10:50am

Thanks again. I had misread your prior post and thought I had to check the connection to the controller board. I refastened the connection to the brake lever and it now works fine.

That’s good news! It’s also a good example of how simple the malfunctions in e-bikes usually are.

When mounting Shark packs or other bottle packs, I've used three or four mounting points way more often than just two. You can add rivnuts to your frame, or use clamp-on bosses in whatever quantity. I don't think that makes a Hailong Shark pack a great idea for off road, unless it's attached to the ...

The less power you have in a mid drive, the lower the gear ratios you'll need to deal with any given situation. Conversely, the more power you have, the faster you can ride uphill or on difficult surfaces. So it becomes less a question of how much power you need, and more about how fast do you want ...

Thumb throttle on right only. Another vote for RH thumb throttle. EVERY handlebar equipped whatever I've ever ridden/driven, 60 years worth of mini bikes, ATV's, snowmobiles, jet skis, motorcycles of all sorts, and now e-bikes, have had the throttle on the right. No plans to change that history her...

so with the thinner spokes being a stronger wheel than with the thicker...how would that work? I guess the thinner spoke is more likely to break, and I've done that, but its not a big deal to fix, verse i guess the thin spoke stretches or something allowing more even weight distribution and better ...

It sure smells like bullshit. Looks slightly uglier, though.

E-HP wrote: ↑

Oct 15 2020 11:02pm

Maybe something like this?

https://wheelbuilder.com/sapim-brass-re ... ipple-13g/

I've used those many times. They work fine; they are easier to round off than regular 14ga Sapim nipples, because they're thinner-walled.

Torque doesn't stress spokes much at all because it's distributed among all of them. If there's enough spoke tension, and a large enough quantity of spokes, normal riding loads don't cause any problems either. The most challenging forces they deal with are side loads on the wheels. That's exaggerate...