this post was submitted on 09 Aug 2024
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micromobility - Ebikes, scooters, longboards: Whatever floats your goat, this is micromobility

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Ebikes, bicycles, scooters, skateboards, longboards, eboards, motorcycles, skates, unicycles: Whatever floats your goat, this is all things micromobility!

"Transportation using lightweight vehicles such as bicycles or scooters, especially electric ones that may be borrowed as part of a self-service rental program in which people rent vehicles for short-term use within a town or city.

micromobility is seen as a potential solution to moving people more efficiently around cities"

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Weight limits for bicycles need to be higher and more transparent, especially if the majority of people want to use them.

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[–] [email protected] 0 points 3 months ago* (last edited 3 months ago) (2 children)

There is one major issue with this article:

Yet, many bikes and bike equipment are still manufactured with only the other 26% in mind.

No. They are made with the majority in mind, since the European and Asian bike market, where significantly fewer people are overweight or obese dwarve the American market.

Projected North American bike market revenue (2024):
$10.44 billion

Projected European bike market revenue (2024):
$27.89 billion

Projected Asian bike market revenue (2024):
$42.13 billion

On an international market, if you don't matter enough you won't get special treatment.

Just imagine if 74% of Luxembourgians decided that their smartphone must have a USB-A port, as an essential requirement. How many major manufacturers would accommodate them instead of continuing to sell "normal" phones? Sure, they could put a USB-A port onto all phones globally sold, but why bother? It's more expensive and nearly nobody outside of Luxembourg would want that feature.

Edit: Source for the numbers (you can switch the displayed region)

[–] [email protected] 0 points 3 months ago (3 children)

where significantly fewer people are overweight or obese

Hey, not sure if you're getting your numbers from the article, but you may want to double check.

40% of Asia is overweight or obese and over 50% of Europe is overweight or obese, with USA at 75%. (Sourced from WHO)

Also, just an aside: the USA is the smallest of these three by population, so the total number of overweight or obese people in Europe vs USA (240-250M)is fairly close even though the percentages are higher.

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[–] [email protected] 0 points 3 months ago (1 children)

I just checked, and the company website page on my relatively high end carbon bike has a listed max weight (rider+bike+equipment) of 120kg. Easy enough to find on the page.

That said...were I close to that limit, I think I'd opt for a steel bike, or maybe titanium if I have the money. Carbon is amazing but its failure mechanism isn't pretty.

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[–] [email protected] 0 points 3 months ago (2 children)

I got an e-trike that lists its weight limit as 330lbs. However, the seat post only supports 220. So one bent seat post later, I’m looking for something that can support my fat ass and I’m coming up short. Help?

[–] [email protected] 0 points 3 months ago (1 children)

Solid aluminum bar is pretty cheap, if you have any sort of tools to cut it to length. I don't know what your clamping/attachment method is for your bike.

[–] [email protected] 0 points 3 months ago (1 children)

Was hoping for something premade. I’ve got a Lectric XP Trike.

[–] [email protected] 0 points 3 months ago (3 children)

Yeah, I haven't seen anything for a more sturdy seat post. Im willing to bet you could find an aftermarket seat and post though, because it looks like it's a pipe-in-pipe attachment to the rest of the bike. As long as it's got the same diameter.

Or fill the stock one up with JB weld or something. Give it some extra stiffness.

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[–] [email protected] 0 points 3 months ago

Idk for sure, but maybe look into recumbent bikes? 3 wheels for more support and usually outfitted with a full seat and not just a bike post.

[–] [email protected] 0 points 3 months ago (1 children)

I agree that there exists a problem with unmarked weight limits and this affects larger riders, but I think the author's proposed change will not be sufficient to increase the availability of bikes with higher limits. The author writes:

My proposed solution, which I presented recently at the National Bicycle Dealers Association annual meeting, is to add the weight limit to the geometry spec sheet for every bicycle next to the standover height and reach

Publishing a spec is (and ought to be) a minimum obligation by a manufacturer, since the consumer has no way to compute these values on their own. So I agree with that. The problem is that unlike the standover height or wheel diameter, the weight limit is artificially constrained downward by limits of mechanical modeling software or destructive testing, and artificial limits like how much product liability the lawyers are willing to permit.

If bike manufacturers have a robust regime for testing up to 136 kg, then testing beyond that would require new processes and test equipment, all of which cost money. A manufacturer that complies with the author's proposed rule would simply publish the 136 kg and call it a day. So a frame that could have supported more weight has been marked lower than it ought to be, while fully complying with the proposed rule.

We run into the crux of the issue: economic demand for higher weight limit bikes is not perceived as being significant. So few will supply that market. Which means there's little demonstrable demand. Which keeps the supply small.

If this sounds familiar to this community, it's essentially the same problem as with micromobility from the regulatory aspect in the USA: only the automobile is viewed as "serious" transportation, so everything else is just for recreation and doesn't warrant its own infrastructure. So no separated infrastructure is built. Which keeps viable options like cycling and roller-blading from becoming popular. Which reinforces the perception as not being a "serious" mode of transportation. Repeat ad nauseum.

There are no easy answers to such structural issues, but we can take inspiration from the popularity of ebikes in the past decade: growing from a niche of motors crudly strapped to conventional bikes, ebikes nearly single-handedly transformed the perception of bikes overall, showcasing their strengths in sense urban areas like NYC for delivery vehicles: fast, nimble, cheaper than an automobile.

I think the author touched upon the niche that could drive higher weight limits, and that would be cargo ebikes. That space is growing as ebikes -- a bonafide transportation answer to American sprawling suburbs -- become more readily accepting, and more fairly-wealthy suburbanites take up cargo ebikes to move the whole family.

Of course, this is going to be a slow process. And it will take a while for cargo ebike prices to come down from the "luxury" range to an "affordable" figure. But I think that's the crack that will break the ice.

[–] [email protected] 0 points 3 months ago* (last edited 3 months ago) (1 children)

With bicycles one major hurdle is that they are assembled out of a bunch of components sourced from multiple different manufacturers, meant for different uses. So while you can create a bicycle frame that handles 150kg fine, can you find a saddle, seat post, suspension fork, hubs, wheels, tubes, tires, cranks etc that all also support 150kg? Or will one of those parts be cheaply sourced as only promising 100kg, so that's what the label will say in the end.

[–] [email protected] 0 points 3 months ago* (last edited 3 months ago)

Component-level weight ratings are indeed lacking right now, although I will note that the author appears to be proposing a frame-only weight rating, presumably because while all other parts of a bike can be replaced, the frame is at the center of a bike, setting aside Ship of Theseus considerations. Replacing a frame is virtually equivalent to building a new bike, after all.

Of course, a manufacturer of assembled bikes should publish an overall weight limit for the bike as-assembled. But still, it might be nice to know that the frame specifically is overbuilt for that particular assemblage, meaning it has capacity that can be utilized with the appropriate upgrades.

You're absolutely right that just rating the frame alone won't necessarily result in broader marker supply, but it's certainly a start. As I said, there's a vicious feedback cycle and the way to break it is to find a niche and grow it. Perhaps mandating a frame-only weight rating will spur lawyers to require all weight-bearing components to also have weight ratings as legal cover, or something like that.

[–] [email protected] 0 points 3 months ago (1 children)

Weight limits on performance bikes are total nonsense. Probably are there just to comply some law. A pro enduro rider weighing 20kg less than me would destroy my setup any day.

I find hard to believe a traditional 26er with 36 triple cross spoked wheel from a reputable manufacturer can't hold up to any rider capable of moving on their own and sitting on a saddle any amount of time.

Unless they are heading to Whistler's a-line

[–] [email protected] 0 points 3 months ago (1 children)

Your MTB wheel set is tested on the standard it's meant for. There's really no reason to test downhill wheel set for maximum weight limit for commuting or road racing because it's not made for that purpose. It's a specialized product for niche sport.

[–] [email protected] 0 points 3 months ago (1 children)

Although true, it isn't the point I'm trying to get across. My view is that weight limits aren't a great metric. You don't have to go for niche sports, the traditional xc/trail bike is what everybody starts with on mtb.

Say this example xc bike has a weight limit of 150Kg. Rider A is at 170Kg buys this bike ignoring the limit and just rides smooth local fire roads for some excersise.

Rider B is young, athletic 70Kg build. Buys this SAME bike and goes on rides with friends that know all the fun trails. Rider B is getting faster and stronger, and the bike starts to show it's limitations.

It's clear which bike will fail sooner. Weight alone doesn't matter, and both riders are using the bike for it's intended and designed purpose.

Manufacturers cannot reliably slap a max weight to their bikes because of all the other factors involved. And if they do, it will be way conservative to avoid getting into legal trouble.

[–] [email protected] 0 points 3 months ago

That's why the manufacturers clearly define what sort of abuse the component is expected to withstand.

For example, take a look on this document on DT Swiss wheels (took it as example because I recently bought DT wheel set and checked the manual)

https://d2a13k6araex7u.cloudfront.net/pmt/00/00/00/00/00/00/00/10/00/00/00/88/5/MAN_WXWASTMSWWRXXS_WEB_ZZ_001.pdf

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