Search found 444 matches

by Jonathan in Hiram
Jan 29 2016 8:03am
Forum: E-Bike General Discussion
Topic: Building a compact cargo bike
Replies: 60
Views: 6910

Re: Building a compact cargo bike

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 whi...
by Jonathan in Hiram
Jan 28 2016 8:46am
Forum: E-Bike General Discussion
Topic: Building a compact cargo bike
Replies: 60
Views: 6910

Re: Building a compact cargo bike

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 limitatio...
by Jonathan in Hiram
Jan 27 2016 11:53pm
Forum: E-Bike General Discussion
Topic: Building a compact cargo bike
Replies: 60
Views: 6910

Re: Building a compact cargo bike

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 tends to ...
by Jonathan in Hiram
Jan 27 2016 11:03pm
Forum: General Discussion
Topic: Need Patent for start production
Replies: 39
Views: 2165

Re: Need Patent for start production

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 English l...
by Jonathan in Hiram
Jan 27 2016 10:48pm
Forum: General Discussion
Topic: Need Patent for start production
Replies: 39
Views: 2165

Re: Need Patent for start production

Good stuff in the thread! BTW just for info... got a buddy that is 24 years as a patent attorney, and all of us would recognize a few of his clients if we lived in the USA... He says for $1M US he can bust most any patent. Just some food for thought. I am sure there is some "puffery" in that statem...
by Jonathan in Hiram
Jan 27 2016 6:09pm
Forum: General Discussion
Topic: Need Patent for start production
Replies: 39
Views: 2165

Re: Need Patent for start production

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 no tic...
by Jonathan in Hiram
Jan 27 2016 5:28pm
Forum: E-Bike General Discussion
Topic: Building a compact cargo bike
Replies: 60
Views: 6910

Re: Building a compact cargo bike

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 front woul...
by Jonathan in Hiram
Jan 26 2016 8:25pm
Forum: E-Bike General Discussion
Topic: E-Trike Project
Replies: 39
Views: 3063

Re: E-Trike Project

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 wouldn't w...
by Jonathan in Hiram
Jan 25 2016 9:07pm
Forum: General Discussion
Topic: Ebikers Book Shelf
Replies: 40
Views: 7056

Re: Ebikers Book Shelf

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 most st...
by Jonathan in Hiram
Jan 25 2016 1:09pm
Forum: E-Bike General Discussion
Topic: E-Trike Project
Replies: 39
Views: 3063

Re: E-Trike Project

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 7-10 w...
by Jonathan in Hiram
Jan 25 2016 9:15am
Forum: E-Bike General Discussion
Topic: E-Trike Project
Replies: 39
Views: 3063

Re: E-Trike Project

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 7-10 wh...
by Jonathan in Hiram
Jan 23 2016 11:27pm
Forum: General Discussion
Topic: MUSIC thread
Replies: 164
Views: 21901

Re: MUSIC thread

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.

by Jonathan in Hiram
Jan 23 2016 10:33pm
Forum: General Discussion
Topic: DIY rotary tool from an inrunner
Replies: 20
Views: 1202

Re: DIY rotary tool from an inrunner

markz wrote:OR CNC machining!!!!!
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.

Image

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by Jonathan in Hiram
Jan 23 2016 10:19am
Forum: E-Bike General Discussion
Topic: Bike Racer - Motorpacing eBike Build - Feedback? (Q100@48v)
Replies: 22
Views: 1608

Re: Bike Racer - Motorpacing eBike Build - Feedback? (Q100@4

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. As for...
by Jonathan in Hiram
Jan 23 2016 8:32am
Forum: E-Bike General Discussion
Topic: Bike Racer - Motorpacing eBike Build - Feedback? (Q100@48v)
Replies: 22
Views: 1608

Re: Bike Racer - Motorpacing eBike Build - Seeking Feedback

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 the ...
by Jonathan in Hiram
Jan 23 2016 5:47am
Forum: E-Bike General Discussion
Topic: Bike Racer - Motorpacing eBike Build - Feedback? (Q100@48v)
Replies: 22
Views: 1608

Re: Bike Racer - Motorpacing eBike Build - Seeking Feedback

I was going by the numbers the OP quoted for wattage and then doubling the difference for what he thought he needed, 270 for in the peleton and 350 or so for the solo rider at 28 mph. He's going to be in a full tuck with all the roadie aero bells and whistles. So he was talking 70 watts additional a...
by Jonathan in Hiram
Jan 23 2016 5:27am
Forum: E-Bike General Discussion
Topic: Amazon Prime Now (E-Bike Opportunity?)
Replies: 11
Views: 1010

Re: Amazon Prime Now (E-Bike Opportunity?)

I know just the bike for giving the taxi rides... :mrgreen: Comfortable reclining position and a great view of something other than the driver's fundament for the passenger, small wheels for good efficiency and thrust with a DD hubbie and it even has a luggage rack. http://www.nutzrad.de/content/kat...
by Jonathan in Hiram
Jan 23 2016 5:18am
Forum: E-Bike General Discussion
Topic: E-Trike Project
Replies: 39
Views: 3063

Re: E-Trike Project

Storx wrote: Could you post a link to which motor your talking about, a quick search came up empty
Lengthy thread on the two speed hub here..

https://endless-sphere.com/forums/viewt ... =3&t=58490
by Jonathan in Hiram
Jan 22 2016 8:02am
Forum: E-Vehicles General Discussion
Topic: Looking for a new bike from scratch.. thinking enduro china
Replies: 2
Views: 402

Re: Looking for a new bike from scratch.. thinking enduro c

I've stripped down a couple of factory ebikes for the electric drive pieces, it worked well for me.

If you label and bag everything carefully you can always put the Prodeco back together if/when you upgrade to more motor on the new bike.
by Jonathan in Hiram
Jan 22 2016 5:05am
Forum: E-Bike General Discussion
Topic: E-Trike Project
Replies: 39
Views: 3063

Re: E-Trike Project

My Location is Tampa, FL... Very flat riding area.. maybe 175ft change in elevation on a 12 mile ride... My Goals with the trike: 1) I want to take my current wattage output that is averaging me around 18mph on the trails i have been riding and increase that to 20-22mph range, so im looking for the...
by Jonathan in Hiram
Jan 21 2016 5:03pm
Forum: E-Bike General Discussion
Topic: Bike Racer - Motorpacing eBike Build - Feedback? (Q100@48v)
Replies: 22
Views: 1608

Re: Bike Racer - Motorpacing eBike Build - Seeking Feedback

This isn't your typical ebike rider, the OP is going to be using a couple of hundred watts max at high speeds to merely assist already vigorous pedaling so the standard rules about amp hours and miles aren't going to apply (unless he gets lazy and stops pedaling of course). A relatively small pack s...
by Jonathan in Hiram
Jan 20 2016 2:06pm
Forum: E-Bike General Discussion
Topic: Bike ergonomics-different for ebikes?
Replies: 27
Views: 1660

Re: Bike ergonomics-different for ebikes?

There's really two main problems with pedaling with the knees significantly bent, most of can't put out near the power versus a straighter leg pedaling and pedaling hard with knees bent can cause knee damage or exacerbate existing damage. If someone isn't going to pedal much then there's no real poi...
by Jonathan in Hiram
Jan 20 2016 7:33am
Forum: General Discussion
Topic: Even buying tires has to be an adventure now, eh?
Replies: 8
Views: 836

Re: Even buying tires has to be an adventure now, eh?

Back when I was still driving I'd been buying used tires for a long time, the last half of the tread squirms less and wears less quickly then the first half. Get a good relationship with someone who deals with used tires and they'll find the nicer stuff for you and you'll pay pennies on the dollar. ...
by Jonathan in Hiram
Jan 14 2016 4:30am
Forum: E-Bike General Discussion
Topic: Dual hubmotor powered trailer build
Replies: 20
Views: 2104

Re: Dual hubmotor powered trailer build

I plan on making a much more modest version of what you are doing here as in a Semi-Recumbent Vision R-40 towing what amounts to a converted kid trailer with plastic tubs in the back for lighter/smaller packages, and towing no more than maybe 100lbs total cargo at one time (possibly split between t...
by Jonathan in Hiram
Jan 12 2016 7:19pm
Forum: Alternative Energy
Topic: Possible answer for charging ebike batteries from solar?
Replies: 3
Views: 1246

Re: Possible answer for charging ebike batteries from solar?

Hi titooon2014, I just got one of these in the mail and I've been playing with it for a couple of days now.. I feel fairly confident this unit will charge seven serial lithium ion cells from two "12V" solar panels (in reality more like 17V each mpp) and it is an actual mpp controller but it only buc...