Search found 128 matches

by solarEbike
Sep 18 2019 4:10pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I’m taking this new trailer build very slowly since it’s made of expensive materials and is mostly held together by adhesives. This kind of ups the stakes on getting it right on the first try. It would make for a better post if I held off until the trailer is done but in the meantime here are a few ...
by solarEbike
Jul 03 2019 4:10pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Are you concerned about the lift/drag you might start to generate if the front of that panel lifts a bit at high speeds? Hmm... I've been riding around with it for a while now and I haven't noticed anything that negatively affects the bike's handling. You're probably right that there's some lift/dr...
by solarEbike
Jul 03 2019 2:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I wasn’t going to post this since it’s only an incremental upgrade to something I’ve posted before but I took some photos and they came out pretty good so I figured what the heck. I finally got around to upgrading the roof mounting hardware to larger diameter carbon fiber tubes to increase stiffness...
by solarEbike
Jul 03 2019 1:46pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I went through this thread again, and I don't think you've discussed your bike frame at all. It started off with a 26" wheel in the back, and then switched to one with 20" wheels front and back. I had assumed you put the motor in the front for the higher efficiency at higher rpm, but what made you ...
by solarEbike
Jun 11 2019 2:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Are you going to buy a couple of commercial flexible solar panels ? ( if so which ones and from where ) or Are you going to make your own panel ? If You make your own panel what cells are you going to use ? What is the cost of each cell ? Strips and solder , taxes and shipping costs ? And On what m...
by solarEbike
Jun 11 2019 1:11pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Oh I see now, there are 10 fixed LEDs that represent the state of charge! That makes sense now naturally. I was thinking that you were doing something more advanced, like red + green LEDs equaled the state of charge, but then green represented how much was estimated to be remaining when you reached...
by solarEbike
Jun 10 2019 2:37pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

So do you basically just have to keep one or two LEDs showing green while you're biking, and you'll arrive before running out of charge? Sorry, I'm struggling to unpack this sentence... One or two green LEDs would be 10-20% SoC. On very long days, I don't want to run out of sun and battery 10 miles...
by solarEbike
Jun 10 2019 12:28pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Thanks, guys. I'm pretty happy with the way it came out. If there's sufficient interest, I could spin this off on its own thread. I'm willing to put the source code up on Githhub for anyone who wants to try this although I could probably use some help with modifying it to be more universal. The curr...
by solarEbike
Jun 09 2019 4:17pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I'm still working on the TailBrain (Arduino-based trailer tilt controller), having fixed coding issues which were causing random reboots and overheating issues resulting from trying to power my Arduino with 13.8V. I think I just lost another photosensor so not quite there yet. Having figured out mos...
by solarEbike
Jun 06 2019 11:11am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I found on my setup it reduced the average cruising speed watts consumption by over 50W. Very nice. I like the simplicity of the 3D printed mounts. How have they held up over time? Have you noticed any reduction in solar power from the cells cracking as the panel flexes? I had a front fairing for w...
by solarEbike
Jun 05 2019 4:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

dunno if these are the right thing, but they start at under $30 https://www.amazon.com/s?k=360+Degree+Camera&s=price-asc-rank&qid=1559766308&ref=sr_st_price-asc-rank Good point. To be honest, I didn't really look at the low end of the market. Looks like there are all kinds of options out there. I'm...
by solarEbike
Jun 05 2019 11:50am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

wturber wrote:
Jun 05 2019 11:35am
Oh. At that price I think I need one...
I know, right? Looks like it's gone up to $50 since I ordered 2 weeks ago. The white one is selling for $78. I can do gold if it's half price.
Screen Shot 2019-06-05 at 9.43.52 AM.jpg
Screen Shot 2019-06-05 at 9.43.52 AM.jpg (66.41 KiB) Viewed 622 times
CamelCamelCamel FTW.
by solarEbike
Jun 05 2019 11:25am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Cute. Which camera do you have? It's the Insta360 Nano . At 70 grams and only $40, I was able to talk myself into adding it as a possible 4th camera :mrgreen: to carry with me. This particular model came out three years ago. The newer ones have far better resolution and image stabilization but at 1...
by solarEbike
Jun 05 2019 10:22am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I got a 360 camera. These things are fun.

by solarEbike
May 29 2019 7:05pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

It wasn't a subset of ASCII; it was more based on letter frequency. For example, E T A and O were all one finger press. I N S and R were one finger press plus one thumb press. H L and D were two finger presses. Etc. The objective was speed and being easy to remember. Never quite made it into a prod...
by solarEbike
May 29 2019 5:56pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

billvon wrote:
May 29 2019 5:29pm
https://patents.google.com/patent/US6822852 (figure 6 worked the best)
"Inventor: William Von Novak, San Diego, CA" ...you're not related, are you? :shock:

So... a subset of ASCII? Did this ever make it into a commercial product?
by solarEbike
May 29 2019 5:02pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Charge during the day while sleeping, ride at night

...If there are any folding solar panels I might consider carrying them for emergency charging if I'm far from an outlet. I'm planning to ride the Southern Tier Bike Route next year from Florida to California. There are lightweight folding solar panels like this . But for my needs, the overlap betw...
by solarEbike
May 29 2019 1:51pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Charge during the day while sleeping, ride at night

...I'm curious if charging during the day while sleeping, and then riding at night... Personally, I like sleeping at night and riding during the day... Exactly what wturber said. Also, sharing the road with other vehicles at night is more dangerous no matter how good your bike lights might be. I im...
by solarEbike
May 20 2019 2:08pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Solar bike history

But enough about me. I recently stumbled across an old image on my hard drive and thought I would post some highlights from pioneers in this field. I first came across this article by David Clay when I was getting started with my solar bike effort in 2007. David built a solar bike in 2000 and rode i...
by solarEbike
May 19 2019 12:30pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Crash test dummy

I woke up early this morning to the sound of pouring rain and thought to myself "this is a great opportunity to test the bike in the rain!" Expedition-scale planning has a funny way of redefining what passes for a good idea. At 7 AM, the roads were delightfully empty, the air had a freshly washed sc...
by solarEbike
May 18 2019 3:12pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Automatic tilt control refinements

I’ve been putting in more 10-40 mile rides with the plywood panel on the trailer to try to flush out any failure points and it’s looking solid. Now it's time to finalize the Arduino microcontroller hardware and software. This is the arrangement of photo sensors I used on the Tilt-o-matic 1.0 trailer...
by solarEbike
May 08 2019 10:14pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I'll probably need to change out the clutch for a larger one, assuming I can find one which will fit. Even on the highest setting, the current clutch occasionally has trouble overcoming the friction I deliberately designed into the tilt assembly to eliminate backlash and excess play which tends to ...
by solarEbike
May 08 2019 12:48am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

I took the new trailer out for a road test with the Arduino and light sensors mounted on a breadboard. Aside from some minor teething pains, the system looks like it will work as intended. The handling is so good I can almost forgot that it's back there. With a fully loaded bike the trailer will be ...
by solarEbike
May 06 2019 11:44pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

The very first e-bike I built, back in the late 1990s, had two arrays of spacecraft type GaAs cells. One on the disc front wheel and one mounted on the frame, they could deliver a combined 100W in full Texas sun. I don't know how much the guy paid for them, but I'm certain beyond any doubt that it ...
by solarEbike
May 06 2019 4:57pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 223
Views: 18257

Re: Around the world on a solar ebike

Wooow ! solarEbike, you're setting a top level of DIY solar bike :shock: Oops. Now I feel bad for not peppering my post with winking emojis. Just to be clear, although I have built a solar panel using satellite cells , I don't consider €500/watt to be remotely reasonable. These cubesat prices are b...