Halfbike
#1
Halfbike
So then, there's this:
Halfbike | Halfbike | The compact and light standing bike, anywhere with you!

I believe I once saw something like a seat-less and seatpost-less two-wheel, pedal powered scooter in one of the Encycleopedia issues, but it was rear drive and had a traditional headset/front steering setup going on.
I'd often imagined taking one of the older Dahon bikes, the one with the handlepost to top tube supports and merely deleting the seat posts and saddle to effect the same basic idea.
But then this just popped up when a friend posted it to FB. Three wheeler with rear steering that owes more to a skateboard truck than a bike. With a stand-up design like this, I don't see an easy way to turn it into a front-drive two-wheeler, even with some kind of crazy swing-bike/Flevo-bike geometry.
I like the idea, but am less than impressed with the folded dimensions. Would love to try one out...
Halfbike | Halfbike | The compact and light standing bike, anywhere with you!

I believe I once saw something like a seat-less and seatpost-less two-wheel, pedal powered scooter in one of the Encycleopedia issues, but it was rear drive and had a traditional headset/front steering setup going on.
I'd often imagined taking one of the older Dahon bikes, the one with the handlepost to top tube supports and merely deleting the seat posts and saddle to effect the same basic idea.
But then this just popped up when a friend posted it to FB. Three wheeler with rear steering that owes more to a skateboard truck than a bike. With a stand-up design like this, I don't see an easy way to turn it into a front-drive two-wheeler, even with some kind of crazy swing-bike/Flevo-bike geometry.
I like the idea, but am less than impressed with the folded dimensions. Would love to try one out...
#2
Senior Member
Joined: May 2007
Posts: 1,040
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From: London
Bikes: 2011 Jetstream P11 Alfine; 3sp Presto-Lite; Occasional Access to 6sp Brompton
I had a brief go on a seatless bike at a show a few years back, found it very difficult to feel comfortable with, very strange sensation, like being on a cross trainer in the gym.
#4
Senior Member


Joined: Apr 2009
Posts: 39,897
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
I've seen these or "bikes" like them from time to time, though never this iteration in the flesh. I see two "issues"
1- no seat. Possibly the biggest benefit of a bicycle is the seat. That means that you don't have to support your weight, and 100% of your effort can go to propulsion.
2- rear steering. Normal front steering is like a weather helm, automatically and quickly bringing the line of support under your "fall". Rear steering first moves the bike out from under the fall before coming back under you (bike goes left before turning right). This makes the handling seem funky and unstable, though it can be adapted to easily enough. If you don't see the difference, you might if you've ever tried backing a car out from a close wall on the side.
So, with those two differences, I classify this more as a scooter or novelty than a bike. Since it's not that small anyway, I'd rather have a scooter, or small folding bike.
All that said, I wouldn't pass up chance to play with one of these if they came my way.
1- no seat. Possibly the biggest benefit of a bicycle is the seat. That means that you don't have to support your weight, and 100% of your effort can go to propulsion.
2- rear steering. Normal front steering is like a weather helm, automatically and quickly bringing the line of support under your "fall". Rear steering first moves the bike out from under the fall before coming back under you (bike goes left before turning right). This makes the handling seem funky and unstable, though it can be adapted to easily enough. If you don't see the difference, you might if you've ever tried backing a car out from a close wall on the side.
So, with those two differences, I classify this more as a scooter or novelty than a bike. Since it's not that small anyway, I'd rather have a scooter, or small folding bike.
All that said, I wouldn't pass up chance to play with one of these if they came my way.
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Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#7
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Exercise,...for fun,...just something different. They're definitely not for long distance riding. I have a PedalFlow. It's actually very enjoyable, and more of a conversation starter than I'd anticipated. When people see it they seem to want 1.
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#8
Member
Joined: Nov 2012
Posts: 43
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From: Grand Forks B.C. Canada
Bikes: Vello Strida Day 6 Cruzbike
I recently had the opportunity to try the Half Bike. I like the videos and the idea and it certainly looks like fun. What I learned with my few min. test, if I wanted to ride the Half Bike I would need several hours of practice, in my two attempts I was not able to ride it. The person who provided the opportunity could ride it but after practicing 15 min. a day for a week was still not comfortable.
I think it is a neat idea but from my short experience I believe people need to be ready for steeper than normal learning curve, it is not at all like riding a conventional bike.
Cheers, Bill
I think it is a neat idea but from my short experience I believe people need to be ready for steeper than normal learning curve, it is not at all like riding a conventional bike.
Cheers, Bill
#9
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Joined: May 2014
Posts: 1,086
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From: Treasure Coast, FL
Bikes: 2014 Cannondale Supersix EVO 3, 2015 Trek 520, 2017 Bike Friday Pocket Rocket, 2022 Moots Vamoots Disc RSL
Look at the Eliptigo. It seems like a much better alternative to this. I know a couple of people who have them, and they love them.
#11
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#12
Junior Member
Joined: May 2018
Posts: 5
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I found a pretty good review video. It highlights the bump you'd get at start and the fun when you got used to it.
All the pros and cons. What you should and should not expect from it.
Since I didn't have 10 posts in this forum yet, I cannot post the link.
You can search it with the title "Crazy trike with rear wheel steering! - The Halfbike" by "Seth's Bike Hacks"
All the pros and cons. What you should and should not expect from it.
Since I didn't have 10 posts in this forum yet, I cannot post the link.
You can search it with the title "Crazy trike with rear wheel steering! - The Halfbike" by "Seth's Bike Hacks"
#13
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Joined: Aug 2012
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From: Somewhere in New York, NY
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I subscribe to Seth's videos on YouTube. The video he does explained the huge learning curve, and it being not the greatest ride.
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