Cargo ebikes can be a great alternative to the family car when hauling groceries or doing the school run. But they can be a bit wobbly at slow speeds. Startup Tarran is aiming for improved stability with auto-deploying landing gear.
There are several cargo tricycles on the market, some of them established for decades. Is there any point to this besides adding unnecessary proprietary parts?
Most cargo trikes are hard to handle at higher speeds, especially when cornering or braking. There is the Babboe Carve which allows leaning into the curve to help avoid that disadvantage.
This seems to be a similar “fix” for a two-wheeler weakness. Not entirely pointless…
Most cargo trikes are hard to handle at higher speeds, especially when cornering or braking. There is the Babboe Carve which allows leaning into the curve to help avoid that disadvantage.
I tried leaning chassis trikes from cheaper ones like Chike to overpriced hipster stuff like Butchers&Bicycles. They all rode pretty horribly, compared to a proper two wheeler, especially during breaking or cornering.
This seems to be a similar “fix” for a two-wheeler weakness. Not entirely pointless…
I have been selling cargo bikes and trikes for several years and have never witnessed that “weakness” you talk about being an issue.
We rent bakfiets for our pup from a couple apps that all use 2-wheel models. There are some parts where it’s nice to let the dog out and bike along side her where it would be nice to have more stability at low speeds.
However, we do ultimately plan to get a two-wheeler when the time comes to purchase our own.
There are some parts where it’s nice to let the dog out and bike along side her where it would be nice to have more stability at low speeds
Valid point, non leaning trikes are optimal in that scenario. I wish you could rent one.
However, we do ultimately plan to get a two-wheeler when the time comes to purchase our own.
Best choice in my opinion!
Worry less about “landing gear” and more about making a front-loader that’s (a) affordable and (b) available in the US, please.
What makes a front loader more desirable for you than a long tail cargo bike? Is it the giant bucket esque cargo holding container? I had read reviews that cargo bikes that held the weight behind the rider (like super panniers or cargo racks) were more comfortable to ride. Curious to hear you opinion!
Keeping in mind that I currently own a long-tail and have never tried a front-loader, I think I’d like to upgrade to the latter so that my kids could climb into it themselves more easily without me worrying as much about it tipping over. It’d also be nice having them sit in the front so I could talk to them more easily.
(Part of the problem could just be that I need a better kickstand, BTW.)
That’s cool, thanks for the perspective.
Most people riding bicycles already deploy their retractable landing gear when preparing to touch down: they’re called legs.
And while maybe there’s an argument to be made that a properly-adjusted bicycle might not allow both feet to touch the ground while still seated, this contraption has some serious limitations. The most egregious is that landing gear – like on aircraft – are only effective when fully extended. But whereas all runways are laterally level, bicycling surfaces offer no such guarantee.
Imagine riding this cargo bicycle on a curve which has a cant (aka superelevation, or banking, or cross slope), then slowing down for a pedestrian or even stopping. A two-wheel bicycle naturally finds the lean angle to balance the centripetal force against the gravitational force, irrespective of the relative angle to the ground surface. But fully-extending landing gear forces the bicycle to be perpendicular to the ground surface, against the mandatory lean angle to balance the forces. And there doesn’t seem to be a provision for partially extending one side of the landing gears to account for the cross slope. If the perpendicular arrangement puts the center of gravity beyond the stubby extended wheels, the bike will fall over.
Tricycles will also force the same perpendicular alignment, but: 1) does so at all times, on straightaways and curves, so this isn’t a surprise to the rider, and 2) tricycle wheels are set wider than these stubby “landing gear” wheels, which is important if the cargo load is substantial (or heavy or too high) and could topple the bicycle when stopping on a curve.
This contraption is akin to bicycle training wheels: too narrow to provide actual safety benefits, while also being outright detrimental towards developing the motor skill necessary to pilot a cargo two-wheeler with its unique qualities.
their retractable landing gear … called legs
haha
That sounds like “planned obsolescence” was the primary design goal.
This is really great for some use cases. Nice to see the explosion of innovation in this space.
