Search found 181 matches

by solarEbike
Oct 07 2020 10:11pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Did you encounter any unexpected difficulties, such as flat tires? Just one flat tire on day 1, thankfully. No serious mechanical issues. My trailer's suspension "collapsed" on the way back but fortunately it was just a bolt that worked it's way loose from all the vibrations and I caught it before ...
by solarEbike
Oct 06 2020 8:24pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Genasun GVB-8 vs CTK-EV300

Here's a teaser from a project that's currently in my video editing queue.
Genasun-GVB-8-vs-CTK-EV300.jpg
Spoiler: the performance difference in terms of daily Wh is negligible.
Genasun-GVB-8-vs-CTK-EV300.jpg (315.28 KiB) Viewed 238 times
by solarEbike
Oct 06 2020 8:04pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

How many solar watt-hours did you average a day? Here are the trip stats from the end of the video. 20,104 Wh and 12 days looks like 1675 solar Wh/day but that includes solar Wh generated during my non-travel days. If I add up just the travel days, I averaged 1472 solar Wh/day with a low of 1079 Wh...
by solarEbike
Oct 06 2020 6:36pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Since Alaska isn't another country, just call that a practice run. Then you and your bike can take a boat and bypass Canada, so the virus doesn't impede some real progress. Take a month or 2 to see Alaska by bike in late May or early June and get that advantage of very long days with your solar pan...
by solarEbike
Oct 05 2020 11:55pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Just one question. When you gonna get out of that fire infested hellhole and get on the road? It's been 2.5 years of analysis, so time to come out of the analysis paralysis phase and do it. I've been waiting on the message "John I should be hitting CR on about X date, how to we meet up?" I genuinel...
by solarEbike
Oct 05 2020 10:25pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

I took a trip down the coast to visit relatives and put the whole rig, gear and rider to the test. I figured I would post here when I got back but I'm not finding the motivation for a detailed write-up. Here's a video I put together. How about an open question and answer session? What do you guys wa...
by solarEbike
Sep 15 2020 6:36pm
Forum: E-Bike General Discussion
Topic: One stop for solar charging ebike info?
Replies: 47
Views: 1700

Re: One stop for solar charging ebike info?

Aluminumwelder, please come back and give a review on the Chinese MPPT charge controllers. I hope they are a good product. These look awfully similar to the one Alex reviewed except they added under-speced 12v and 5v outputs (6w and 5w only?!). You can buy just one unit for US$30 on eBay or AliExpr...
by solarEbike
Aug 22 2020 10:53pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

That last photo reminds me of our bush fires here in Australia over the summer. Was scary stuff! It was surreal. At New Brighton beach, there was some light ash falling and water-dropping helicopters flying directly overhead. The total area burned so far is only about 1% of the Australia bush fires...
by solarEbike
Aug 22 2020 5:04pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Update on the wind-gust-challenged trailer

I decided my wind gust problem was mostly hardware related. The adjustable driveshaft clutch I'm using to protect the tiny gearbox of the motorized tilt mechanism was not strong enough to hold the panel in place against a sudden wind gust. Even when the panel was level, a slight updraft could sudden...
by solarEbike
Aug 17 2020 8:57pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Fabric tail fairing mock-up. What do we think? Is this worth pursuing? Over decades of riding, and lusting after higher speeds, I found that my average speed on a long day never got over 15 mph. At that power level, adding fairings didn't help. Thanks, Warren. I keep coming back to this every coupl...
by solarEbike
Aug 15 2020 9:12pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Fabric tail fairing mock-up. What do we think? Is this worth pursuing?
IMG_6533.jpg
IMG_6533.jpg (208.46 KiB) Viewed 987 times
by solarEbike
Jul 21 2020 11:34am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

I find this interesting as I've found the opposite. After I first put a solar panel on the front of my semi-recumbent I noticed a significant improvement in cruising speed (45-50kph) efficiency of about 50W+. I've increased the size of the panel over the years from 15W to 40W now and the efficiency...
by solarEbike
Jul 20 2020 1:33pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

I was wondering why I dont' see any aerodynamic trikes compete in sun race... I think this is one of those things that seems simple and obvious until you actually try to implement it. It's a challenge to make a fairing light enough so the gains aren't eliminated by the weight penalty during slow hi...
by solarEbike
Jul 13 2020 4:55pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Does automated tilt tracking make sense on a solar ebike?

Now that I've ridden several hundred miles with the new sun tracking trailer, let's revisit the question of "how much more energy do you get with sun tracking?" The short answer is "it depends" and "probably not enough." We'll need some definitions of sun tracking in the context of a solar ebike so ...
by solarEbike
Jul 05 2020 2:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Thanks -- this has been *very* useful information and will save me from multiple trips down the wrong rabbit holes. I can't begin to express the real gratitude I feel for the amount of your time and hard work that you're willing to share with total strangers like me. If your travels ever take you t...
by solarEbike
Jul 04 2020 7:01pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

I agree that using your design as a "starting point" is likely the wisest approach, since my foot/pedal clearances might just be sufficiently different. Having an actual printed piece would allow me to get more accurate dimensions, and would be an easy way to produce a prototype. Sounds good to me....
by solarEbike
Jul 04 2020 2:27pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Thanks for the great advice -- the arrows you've taken in your back are definitely making life easier for those of us who are following in your footsteps. Hang on a sec... If I'm in the front, you're following in my footsteps and the arrows are in my back, who is doing the shooting? Unfortunately, ...
by solarEbike
Jul 03 2020 2:52pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

It will take a while to digest all of the data in your magnificent post, but I think you've definitely earned a place in the history books for this achievement. I appreciate the sentiment but I've managed to remain humble by remembering that the solar bike record is held by 2018 SunTrip participant...
by solarEbike
Jul 02 2020 7:27pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

The 200 mile test ride

A deadline has a wonderful way of focusing the mind. I got my custom encapsulated solar panels in August of 2018 and kept putting off the irreversible final step of bonding them to my new nearly-finished trailer until two weeks ago. Some of it was about wanting higher confidence that I hadn't overlo...
by solarEbike
Jun 24 2020 11:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Indeed, even if you went to 20 degree adjustments you'd see almost no change in harvested power. Sure, for some definition of acceptable loss. At 20° error, the loss is around 6% which kind of defeats the point of having automated sun tracking. Admittedly, the tracking is more of an interesting exe...
by solarEbike
Jun 24 2020 5:27pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Here's a short time lapse of the sun tracking while the bike is stationary. I'm looking forward to doing these in more scenic locations in the future. 5p6qLDJF6zQ Eliminating the clutch will reduce the backlash which means I could do smaller, more precise angle adjustments but having the sun's rays ...
by solarEbike
Jun 24 2020 1:45pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

solarEbike, wow it looks awesome. Thanks for sharing. Hello and welcome to the forum. Thanks for creating an account just to leave a kind comment here. the total solar Wh was 10% higher than the model predicted. Either my model inputs are too conservative or the perfect cloudless day had more insol...
by solarEbike
Jun 19 2020 2:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Thanks for all the suggestions. I've done several test rides with the handlebar mounted potentiometer to limit the maximum tilt angle and it appears to be quite effective in terms of giving me fine manual control of the wind profile on the fly. I don't mind having to fiddle with it for now since it'...
by solarEbike
Jun 18 2020 12:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

Final assembly of the trailer panels is proceeding apace. Tab wires and Kapton tape on the back of the panel for bypass diodes. 48D9EA8A-8DC0-4616-839C-5AEF317DF177.jpg Epoxy potting compound candy-coating to keep them dry. This stuff takes 4 days to fully cure at room temperature or two hours at ov...
by solarEbike
Jun 06 2020 11:43pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 321
Views: 49285

Re: Around the world on a solar ebike

I wasn't expecting this much trouble with wind because the previous single wheel trailer (almost) never had this problem. This version is 26% lighter, has 7% more surface area, tilts to 85° from horizontal instead of 45°and is a little higher off the ground for more suspension travel. Each of these ...