Search found 98 matches

by solarEbike
Apr 22 2019 5:09pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I’ve been wanting to design and build a bike & trailer setup with some solar charging, some thing that would allow long distance travel and perhaps a RTW trip. Go for it! If you start now, you might even finish before me. :) Good to hear you're also looking at the Sun Trip bikes. Lots of interestin...
by solarEbike
Apr 19 2019 11:49am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

A day in the life of a solar ebike

Yesterday, I left the bike with just the 82 watt solar roof panel out in the sun for most of the day. I ran some errands around noon and then left the bike to charge from the sun until the battery was topped off again. This isn't a typical day for me but the log file tells a story with a little bit ...
by solarEbike
Apr 16 2019 3:38pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I was wondering about the direction of carbon fiber for driveshafts, so thank you for the answer there. Good luck! The challenge with designing carbon fiber parts is that you really need to orient the fibers so you have strength only where you actually need it. If you pile on 0°, 90° and 45° orient...
by solarEbike
Apr 16 2019 2:25pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

It's hard to say from here, but I thought your current u-joint was fine, and the twisting was spread though the long sections evenly. I'm pretty sure the offset between the vertical and horizontal hinges in other joints it just to make production easier. Good eye. I took another look this morning, ...
by solarEbike
Apr 15 2019 5:53pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I think you can use plain bearings or plain closely size holes instead of ball bearings. Stiffer that way, and the hitch barely moves anyway. That's an interesting idea. It would be easier to fabricate as the 22 mm holes sized to the press fit the bearings were giving me some pause. I found an even...
by solarEbike
Apr 15 2019 5:20pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I think if you bolted a rigid child-sized mass in that position, you'd have the same kind of problems you're facing. I was thinking the same thing. Must have been an interesting challenge trying to prototype that design without using actual children. Thanks for posting the photo of your design. Do ...
by solarEbike
Apr 15 2019 1:05pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Trailer travails

Endless Sphere to the rescue! I really appreciate all the feedback. You guys rock. [*]The trailer's center of mass is too high? I need some room for suspension travel but there's room to lower the the boom. I think that's the main issue. The torsional axis of a one-wheeled trailer is a line between ...
by solarEbike
Apr 14 2019 5:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Trailer travails

Yesterday, I took my new trailer design out for its first road test. You won’t believe what happened next! pXxHGZaWDUE Learning to fail is a critical step on the road to success. I learned something yesterday. To explain what happened, allow me to recap some highlights from my solar bike trailer fai...
by solarEbike
Apr 01 2019 3:23pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

This happened back in January. I've already replaced it. Justin's take was that it was beyond repair.

Yes, it stung. I was a lot more careful about labeling and double-checking connections before applying power after that. I suppose the dead CA3 may come in handy for spare parts later on.
by solarEbike
Apr 01 2019 12:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

Wiring always surprises me too once I put it all in one place trying to clean it up. I'm usually just to chicken to trim all the wires to length, in case I make any changes later. Tell me about it. I was envisioning something more like this masterpiece... or at least something that could be describ...
by solarEbike
Mar 31 2019 1:18am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

A few clicks and how much money for the 3D printed parts? That's been my hesitation with such doings. That said, the pieces look great and the ability to get shapes and fits that are exactly what you want (or what you think you want) is great. Your point is valid. I was being cheeky. "A few clicks ...
by solarEbike
Mar 30 2019 2:01pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

More fun with 3D printing

But wait, there's more! Emboldened by my initial successes with designing my own 3D printed parts, I decided to apply my favorite new tool to a couple of design challenges on my long list. Where do I mount additional switches to control the trailer tilt motor and to cut power to energy sucking acces...
by solarEbike
Mar 30 2019 11:47am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

Looking good. Did you have any wind when testing? How it behaves in a cross wind will be important. I suppose if it gets windy, you just flatten out the panel to minimize it's wind profile. Here's some anecdotal wind data. This was a particularly blustery day on the San Francisco-Oakland Bay Bridge...
by solarEbike
Mar 30 2019 11:24am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I just watched Justin's presentation (video) about ebike motors at the Vancouver bike fair, in which he mentioned mfgr's claims about their motors' rated wattage. Good stuff. I just watched that video yesterday. For those who haven't seen it yet, the part where Justin discusses motor ratings starts...
by solarEbike
Mar 29 2019 8:38pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

Thank you, rowbiker and Cephalotus, for the words of encouragement... and the reminder that I haven't posted in a while! Here's an update on some odds and ends. Following up on previous discussion about the legal implications of operating an ebike in different jurisdictions around the word, I took m...
by solarEbike
Feb 03 2019 9:58pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

... I definitely want to redo it but with satellite grade (35%+) solar panels and at least 150W so I can get an average of 100W. That's a nice looking setup. Yeah, you strap solar panels to a bicycle and you're going to get some reactions from people. If you find someone willing to sell you 150W of...
by solarEbike
Feb 02 2019 4:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

108V DC on tap

Here's my mobile office setup. I have my 6 LiGo batteries held together in two groups of three with long M4 screws on opposite corners as indexing pins. This makes it easy to leave three on the bike to continue solar charging while I set up office in the shade nearby. A custom plug connects the thre...
by solarEbike
Jan 24 2019 2:53pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

Looking good. Did you have any wind when testing? How it behaves in a cross wind will be important. I suppose if it gets windy, you just flatten out the panel to minimize it's wind profile. A lot of my local riding is right next to open water along San Francisco Bay and on the new SF-Oakland Bay Br...
by solarEbike
Jan 22 2019 11:58pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I finally completed the solar roof panel and took it out for a test ride. IMG_2272.jpg I put a world map with my route on the bottom of the panel IMG_2213.jpg Some serious lighting, including running lights, brake light and turn signals (not shown here). 08A4D53B-C629-4A05-A505-5ABA67463C27.jpg Prog...
by solarEbike
Dec 26 2018 2:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

My first foray into 3D printing

I’ve been watching 3D printing from the sidelines for a few years. Frankly, most of the output has left me underwhelmed: tacky keychains printed at super low resolution, desktop hobby printers which take too much effort to achieve acceptable results, cosplay enthusiasts who spend hours priming and s...
by solarEbike
Nov 19 2018 2:31pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

Re: Around the world on a solar ebike

I like the Lazy Susan as a starting point. Nice work :) That was a fortuitous discovery. I started out trying to design a pivot mechanism from scratch, went browsing on McMaster-Carr for bearing ideas, saw a bunch of very expensive and heavy slewing bearings and then stumbled across this $20 soluti...
by solarEbike
Nov 18 2018 10:28pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

solar roof

A little progress update. After ten years of stubbornly refusing to explore overhead mounting options, I finally decided that having a small roof over my head would have enough value in keeping the sun and rain off my head to offset the perceived downsides: high center of gravity, aero drag, cross w...
by solarEbike
Nov 12 2018 9:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 154
Views: 9115

sun tracking tilt mechanism

I've had a few requests for details about the sun tracking tilt mechanism I built so I'll try to gather the key bits here in one place. This is not going to be a clear how-to guide with easy to follow steps. I've had lots of failures and a few successes and I'm still working on optimizing my design....
by solarEbike
Oct 05 2018 5:36pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 333
Views: 28499

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

I applied a 15 day moving average to make it possible to compare with typical weather data We had a friend who's involved in tracking migratory animals recently share us this program here https://www.movebank.org/node/6607 which would let you extract the actual weather info for an location at any t...
by solarEbike
Oct 05 2018 4:21pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4446
Views: 649206

Re: Cycle Analyst V3 preview and first beta release

#2 Enable Regen Speed Limiting: This way whenever you are exceeding the speed limit the bike will do proportional regen to slow you down. If you combine that with either the aux potentiometer or digi-aux control set to vary your speed limit, then you can easily slow down right to a stop via regen w...