It’s marginal gains all the way here but genuinely if you’re an omnivore the E-Bike might work out more enviromentally conscious
It’s marginal gains all the way here but genuinely if you’re an omnivore the E-Bike might work out more enviromentally conscious
yeah nailed it. vegan acoustic biker clears every other mode of transport but otherwise burning a lot of oil might net you more energy than converting meat, cheese and eggs through a human.
The only thing that just seems wrong is the manufacturing emissions of e-bike versus analog bike. E-bikes weigh more, so shipping them around has more emissions as well. I think it’s probably very close, but like you said, it depends a lot on what the food is too…
Idk, I rarely trust emission numbers because a lot of companies fake that shit in various ways and many of the numbers are self reported.
I don’t mean to attack you but there’s a point to be made here as per the slavery conditions battery ressource miners minors are subjected to but like a shipping crate full of batteries ain’t it. Like look it up, the “shipping” part of most goods is like in the cents regions because a container ship is pretty damn efficient.
I mean, it’s more than just the batteries. E-bikes weigh about twice what a regular bike does. So if the max capacity is 1000 bikes it would be 500 e-bikes (made up numbers here). To ship the same number of e-bikes would take two separate trips.
I know sea freight is very efficient, but there’s no reason not to account for the difference if we’re making the comparison?
There’s a couple of issues at play which mean it doesn’t work exactly like that.
Firstly larger ocean freight don’t scale proportionately to weight linearly. So even if we assume that ebikes would mean a full doubling of the weight of a given trip it wouldn’t require double the energy and therefore emissions to do the trip. It will depend on the exact vessel but an estimate from here is for each additional 100 ton of mass to a container ship it would use an additional 0.0714 of a gallon of fuel. Its very cool physics which is largely just down to the sea doing most of the work carrying the weight itself (the same works for different reasons for rail but all other modes have much closer to linear scaling).
The other factor is that in practice the energy and emissions are the result of whole systems and trips are not always operating at ideal conditions. So its quite hard to judge what actually changes in a while system if there’s an increase in some weight of some products.
These are the reasons that additional weight in ebikes doesn’t come out to a huge increase in shipping emissions when its all worked through.
edit: paper uses imperial ton not tonne - corrected
Also a result container ships scale on volume not mass so a trip that has a capacity for 1000 acoustic bikes largely has a capacity for 1000 ebikes since when shipped they use up the same volume (excluding cargo bikes)
Just because I am the type of person that I am I have to point out as to whether an e-bike weighs more than a regular bike depends highly on the regular bike and also the e-bike honestly. They made some heavy ass acoustic ones, they make some lightweight e-bikes. Latter with little range, mostly, to be fair. I say this to ask if somebody shipped some heavy ass steel bikes, would you be concerned as per CO2 Output?
I mean it’s there, but it’s genuinely just marginal. Like 0,03% of the CO2 Budget of any given bicycle were it ridden.
Now the resource extraction I don’t have numbers on and it probably sucks. People buying E-Bikes to ride them 200km over a 10 year period probably also isn’t great for CO2-output - in the context of bicycles - but if we assume what gets shipped gets used it doesn’t matter
I think you’ve mistaken my comments if you think I’m trying to make e-bikes sound bad or something. When I made that comment, I looked up how much a few bikes weigh and found several articles that said e-bikes typically weigh about twice as much. Obviously this isn’t applicable across the board to every bike, but there’s really no way to make that kind of comparison without using rough averages or doing way more research than I’m prepared to do.
Again, I’m just saying if we are going to compare the emissions of e-bikes and bikes then we should make the comparison for everything. We’re already talking about a pretty small number, so even if it only requires 1.5 extra trips or whatever there would be a difference.
Also, a container ship isn’t the only thing required to get a bike to people. Trains, trucks, and planes are used as well. If the truck going from Seattle to North Dakota or whatever has to make a second trip or 1.33 trips or whatever, that is an increase in emissions. I’m not sure why we are going back and forth on this because it seems incredibly obvious that this would have to be accounted for to make an accurate comparison.
The frame of reference here, to me at least, isn’t the utopia where we get to squabble about the ecological merits of e-bike vs. acoustic bike, it’s where one car getting shipped anywhere from anywhere eats up the logistical CO2-equivalent of about 50 bikes (55 for e-bikes).
One way to look at it is to compare it with the EV debate- the carbon expenditure to create a new EV far outweighs the net emissions of keeping an old combustion vehicle running for a year. But say you drive 20,000 miles a year. At some point (I forget the math but it’s 5-10 years) you’ve closed the gap and now you’ve got a real net deduction of emissions per year (vs driving the ICE). It’s gonna be a lot more variable with humans and the types of food we eat but there should be a similar crossover point there too.
The added weight may be a lot of emissions over thousands of bikes/batteries, but per bike its probably negligible. The only part that is usually not manfactured locally is the battery, which can be shipped in bulk on cargoships for very minimal CO2 per-item (and more space-efficient than a bike frame).
This is for food, but the point is the same; transport is done in such high quantities that very few food items here even register as significant sources of emissions. I dont think this chart is super accurate but I hope that gets the point across.
God, this comment goes so hard. “Vegan acoustic biker” fuck me, that’s a hell of a username.
hell yeah