Recent content by Jonathan in Hiram

Dan, you might be interested in how I made a swingarm pivot out of two old bike steering tubes and head bearings. The pinch clamps are made from tubing and 1/4-20 coupling nuts for threaded rod, they will be brazed to the frame when I get the rest of it made. I'm way too focused to take pictures...

I get the impression the OP is designing around parts he already has, has the front shocks but no suspension fork, he might already have the front motor. Tubing is pretty cheap, building the fork if you already have the shocks would be cheaper than buying. Thanks to fairly severe financial...

Long with a lot of trail and not too much steering axis inclination will make it stable which is a good thing for a cargo bike particularly when you are loaded. What I've noticed playing around with different bikes and motorcycles over the years is that the inclination of the steering axis...

Re: Work that is beneficial to all living beings.. Of all things Twain's War Prayer pops into my head.. I'm not going to post the whole thing because it's not relevant and actually kind of disturbing, particularly in view of recent history, Twain was one of the most powerful writers in the...

I suspect almost any patent that isn't defended with even more money can be busted by enough money.

My favorite rant on patents... I used to subscribe to Midnight Engineering and this was an article in that fairly short lived mag from the late 80's early 90's TL;DR: Patents are an enormous time and money sink for the individual that are about as likely to pay off as playing the lottery with...

The cargo rack is a little higher than it strictly needs to be, lower would be a bit better. With that high top tube getting on and off with the rack loaded where you can't swing your leg over it is going to be a bit awkward depending on how old/agile you are. A mixte type of frame in the...

If you use 33 or 34 gauge (skinny) copper wire to solder to the individual cells from a bus bar they can act like fuses at around 4-6A per cell. It's also so thin it's really vibration resistant since it bends so easily and allows the cells to move a bit without breaking the connection. I...

If you are going to be a serious ebike tinkerer you need a basic understanding of electricity and electronics. I probably learned more practical electronics from the ARRL handbook than any single place, today the internet replaces it to some extent but it's generally some of the clearest and...

I sit corrected.. :mrgreen: Yeah, high resistance cells and cells that leak down significantly should be eliminated before you start capacity matching if you want to save time.. Good to know about the new charger, that's quite a useful upgrade to the old capability. Charge them all up...

The B6 is going to be ~very~ slow discharging your cells, they do discharge but it is limited to just five watts total. If you have five cells in series for about 20V then you can discharge at 5w/20v or 0.25A which will take roughly ten hours to discharge the 5 cell pack. An 18650 cell holds...

Best performance I have seen in a while, Samantha Fish covers Screamin Jay Hawkins' I Put A Spell On You... A lot of pickers play the blues, Samantha feels them. GL9rBAjut2g

I'm using a heli brushless on a high speed spindle I made for milling wood on my DIY CNC mini mill.. Works fantastic, I've made hundreds of pounds of sawdust with it.

Freewheeling is already built into the motor, controller has nothing to do with it, EABS or not. Since the motor freewheels the EABS won't do anything but suddenly stop the motor when engaged, you won't even notice it most likely, at most you'll feel a slight jolt as the motor rapidly brakes...

Cruise is going to be tricky because you want to simulate being in a pack and the effect of drafting is going to vary with speed, normal ebike cruise is almost going to be the inverse of what I suspect you need, less help at lower speed and more help at higher where drag would be greater out of...