I assumed the inflatable pontoons were implied.
I think "riding around the world" is akin to "walking around the city." It does not imply that the person will cover every inch of the periphery of the city - but that he will cover a lot of ground.
Go for it!
And that the routeThe journey should be continuous and in one direction (East to West or West to East), that the minimum distance ridden should be 18,000 miles (29,000 km), and that the total distance travelled by the bicycle and rider should exceed an Equator's length, i.e. 24,900 miles (40,100 km)
But this is my trip and I'm making my own rules. For one thing, I think you should actually travel the length of the equator by bicycle to offset the fact that you’re crossing the oceans by other means. My proposed route consists of:must be ridden through two approximate antipodal points.
Me too. It was a thick (2" or so) book and it was printed on flimsy paper; it got pretty tattered after a while, but it was great for car trips.solarEbike wrote: ↑Jun 15, 2018 2:31 pmWhen I was 11 years old, my parents gave me a copy of the Guinness Book of World Records. It was a cheaply printed mass-market paperback and I kept thumbing through that volume until it fell apart. The world’s oldest human, the jump rope endurance record, the man who ate an entire bicycle. The more preposterous, the better. The stories of human endurance stayed with me the longest.
The whole trailer is 30 lbs (14 kg), the tilting red support panel without the PV modules is 7 lbs (3 kg) and the PV modules are 2.9 lbs (1.3 kg) each. I'm now building what will hopefully become the version I take on the road and it should come in at a lower weight and have 350 watts of solar on it. Weight reduction using lots of carbon fiber and custom fabricated PV modules with ultralight encapsulation.
Genasun GVB-8 boost controller. Designed by former MIT solar race car team members. MPPT updates 15 times per second for use on a moving vehicle. Proven track record with past and current The Sun Trip participants.
Do your bifacial modules have separate outputs for the front and back facing cells? I've encountered them several times as an option for solar carports during my residential/commercial solar career but never found a project where they were the most cost effective solution.
Bifacial cells are cells with transparent backing so that they generate from both sides. One output; it just can receive light from both sides.
Ah. That explains why the bifacial module data sheets I've seen all have just one pair of outputs. I incorrectly assumed they were made with two cells back to back. Well, I'll consider anything that can get me more Wh per kg than my current setup.
Outstanding project!solarEbike wrote: ↑Jun 15, 2018 2:31 pmWhen I was 11 years old, my parents gave me a copy of the Guinness Book of World Records. It was a cheaply printed mass-market paperback and I kept thumbing through that volume until it fell apart. The world’s oldest human, the jump rope endurance record, the man who ate an entire bicycle. The more preposterous, the better. The stories of human endurance stayed with me the longest. I was approaching puberty and my body was about to experience all kinds of magical changes. Maybe I would grow the longest human tongue?
More recently, I read Christopher McDougall’s Born to Run and experienced that same sense of wonder about what the human body can accomplish when pushed to the limits of endurance. Our evolutionary heritage as a species has left us poorly equipped for sitting in front of screens all day long. But running down antelopes on the Savannah? Our bodies are uniquely suited to the task. Most of us have just forgotten.
Until a few days ago, I believed the origin of this project was a fully loaded 2000 mile (3200 km) bicycle tour of Italy I completed in 2006 but now I’m thinking this all started with that book.
When I started planning the route for this adventure it only made sense that I would consult the oracle of St. James Gate, Dublin. They define around the world cycling for record purposes like this:
And that the routeThe journey should be continuous and in one direction (East to West or West to East), that the minimum distance ridden should be 18,000 miles (29,000 km), and that the total distance travelled by the bicycle and rider should exceed an Equator's length, i.e. 24,900 miles (40,100 km)But this is my trip and I'm making my own rules. For one thing, I think you should actually travel the length of the equator by bicycle to offset the fact that you’re crossing the oceans by other means. My proposed route consists of:must be ridden through two approximate antipodal points.
I didn’t grow the world’s longest tongue. And while I did grow up to be freakishly tall, it’s nothing for the record books. The thought of having to register with Guinness in advance and having to keep daily records and having to collect signatures along the way seems like a giant hassle. But now that I’m reminiscing about that old record book maybe the 11 year in me would like to be in the book.
- 60,000 miles (100,000 km) total distance including water crossings
- 40,000 miles (65,000 km) over land
- 6.5 continents (Antarctica is a definite maybe)
- One pair of antipodes
What do you all think?
proposed route as of June 2018.jpg
I hear you. Sharing the road with cars takes some getting used to. I've been ebike commuting 20 miles a day for most of the last 10 years Rain or shine. Half of that has been along side of traffic. It helps if you make good decision like riding assertively and defensively as the situation dictates. It helps if you assume cars don't see you. I use two mirrors on my bike, wear high visibility clothing, run very bright lights day and night, never ride with headphones, etc. but none of these will do me any good against the teenager behind the wheel looking at their phone instead of the road. But what's the alternative? Staying home? Joining the traffic jam, stuck in a metal box on wheels? No thank you.
I may not be able to lick my eyebrows but I did eventually learned to speak in four different tongues, which is likely to be more useful on this adventure.
Good point. Heat is a legitimate concern. I've done about 500 miles (800 km) of road testing with this red foam panel, including a couple of days with 100°F (38°C) ambient air temperature so assuming solar cell temps are 25°C above ambient, that's hot enough to slow-cook an egg. Under those conditions, large blisters appeared between the fiberglass/epoxy skin and the extruded polystyrene (XPS) rigid construction insulation foam. Not enough to compromise the integrity of the panel, but it probably wouldn't survive three years of bouncing around the world. I suspect the culprit was outgassing from the foam at elevated temperatures. It turns out that this is a known issue among surfers who use certain types of XPS foam cores.John in CR wrote: ↑Jun 16, 2018 7:59 amHave you tested your panel in hot sun? It all looks great though I'd want to use the panel for shade like my motor customer who took his solar ebike all the way around Australia. I ask about the panel testing, because with the foam I'd worry about heat buildup, which is a big concern with factory built panels here in the tropics where the sun is stronger. The heat reduces panel efficiency and reliability. Since cells are designed to absorb as much sun as possible and what doesn't get converted to electricity becomes heat, I'd worry whether the foam and resins can handle the temps.
Nice. Haven't seen that one before. My Nomex (aramid) honeycomb core panel in the video above came in at 1.2 kg/m² with 5.5 oz/yd² (186 g/m²) cloth on both sides and my second test was 1.0 kg/m² with a lighter cloth on one side. Given the Sunpower Gen III cell temperature coefficient of power is -0.29%/ºC, I would need to see a significant cell temperature drop to offset the extra weight. It's all about the Wh per kg for me.
Absolutely. Fluropolymer topsheet is the way to go. My current and future panels have this as well.