Endless Sphere

If the wattage is the same and the RPMs are the same the bike will perform the same.

Has XT-90 antispark been mentioned yet?
https://hobbyking.com/en_us/xt90-s-anti ... s-bag.html

heat and Wh/mi

If you overvolt too much your cruise efficiency starts to go down, your motor instead of being able to handle let's say 2000 watts starts to hit maximum heat (about 110 Celsius for me) at maybe 1800 or 1500 watts.

Utah has posted speed limits on their "multi-use paths" and doesn't seem to enforce wattage; 20mph I think. What's it like in Phoenix now with the scooter thing? I haven't been to Phoenix in a few years and last time I was there were scads of scooters everywhere. It seems that you can cell-phone app...

Airless tires had not been popular so far, because they ride horribly at speed, and most are making rims fragile since hits are not spread around the wheel. I like solid tubes. I would liken the experience to something similar to riding in the mud on the bicycle side of things but install them on t...

Nice work! Glad to see you're still at it. We have a single seat version of that trailer for my son to ride in; I keep seeing them pop up on endless-sphere for projects :P For our honeymoon in 2015 we flew to Las Vegas, got a rental car, and immediately left so we could explore a different national...

Never use a nico press swedge OVER the vinyl on the cable, always strip the plastic off first. I saw that in one picture of one of your earlier builds, I know aircraft wire rope (and working techniques and just had to comment on that! Your use was probably not structural, so no biggie. But for a se...

Parajared, You have the talent, and the tools and shop space to make your own trike In 2013 I purchased the "Street Fox" design from Atomic Zombie and endeavored to build my own trike (www.atomiczombie.com). I found some exercise equipment at the thrift store that seemed perfect as steel beams. I l...

I really like your build and trips! I'm hoping to build a trike next year if I have the money, and there is some good information here. Any new updates? The material on my bike trailer wore out and started ripping at the seams. I removed all the nylon and got on the mig-welder, started building a t...

The magnets are too small.

The repulsive force you need (in Gauss) is too weak.

The whole "cheating" thing always confuses me. Cheating implies some sort of competition is taking place. I do not remember entering a bicycle race. I imagine it from their perspective, you are chugging down the road on your $1500 carbon fiber bike in your Lyrca suit and feeling fairly confident in...

Maybe mention how it is faster to get around in big cities with them, say you mention the time it takes to get from point A to B in Las Angeles traffic vs point A to B on a bike path.

Maybe for those low-slung two wheel recumbents?

i already built one that does 60mph....

worse thing is that it could so faster but the original tires come off the rim at that speed.

Well that would go well with the username "flippy"

I'm not familiar with UDF airliners but in powered paragliding the noise from the "noisy" 2 stroke motor is peanuts compared to the roar of the propeller itself.

What will happens with old batteries is that you get a cell (or two) that start to flake out on you. Most notably you will charge to 4.2 volts per cell and you get a cell that will only go to 4.15 or another thing that happens is that you will discharge down to 3.8 volts per cell and you will have t...

When I experimented with a temperature sensor I came to the conclusion that you can overvolt and overamp the motor as much as you would like so long as you keep the motor cool (I cut off at 110 celcius). -RC hobbyking airplane motors intended for 3s overheat and seemingly run very inefficient (ineff...

flippy wrote: ↑

Jul 19 2018 1:18pm

should make a nice powertrain for a kart, or the worlds fastest mobillity scooter....

I have my suspicions that a number of long-time endless-sphere users are going to end up with some impressively awesome mobility scooters in their later years.

oops, I misread that.

I was comparing "right hand" mid-drive to hub.

You are interested in a "left hand" mid-drive I think. I don't think you would want to run 7.5 kilowatts down a bicycle chain. Sorry, I have never used a "left-hand" mid-drive so I can only speculate.

Hub on the flatter stuff. Mid-drive on the windy, steep stuff... Mid-drives feel a bit wimpy, what happens is that when you start to exceed about 1200watts or so they wear out the components in your drivetrain. Other users report snapping chains but for me personally the biggest issue was gears star...

First thing that came to mind for me was actually that high voltage / low amps somehow equals higher efficiency versus high amps / low volts.

I was about to post that. It looks like you beat me to it.

My experiences is that mountain bikers are a generally noisy group. They frequently ride in pairs and groups and they frequently yammer as their knobby tires grind away at the trail they are riding. In the still morning desert air I can usually hear their conversations plainly from hundreds of yard...

How's you eyesight, a fold-out keyboard for your smart phone maybe? That's what I would use.

If it's okay with you guys I would prefer to visualize mountainbiker24 as a bike hating curmudgeon who harbors deep disdain for the outdoors, fun, and the MTB community. Thank you. Hello ya salty old fist shaker you! To answer your question, I enjoy single-track here in the mountains and while its l...

In the 100 watt trailer scenario I'm making a lot of assumptions. 1) I assume 10 watthours per mile is really legging it for you whereas 25wh/mi is reasonable enough. The math I guessed on was 2000 watthours of deficit because 25wh/mi x 100 miles = 2500wh. Subtract about 500 watthours that you would...