http://nubikemfg.com/

You know I was all ready to start laughing until I watched the video. Not a bad idea really if the claims are to be believed. Looks a very natural way to propel you along.

Also website has some subtle and unnecessary eye candy making me believe I will be that popular with the ladies if I buy one

I'm in

Its been done before a few times, right back to pioneering days, and steam engines use a similar set up to drive wheels so all they have done is use modern materials and machining. Stiffness of the treddles(!) will be an issue as well as bearing life and sealing but it could be a goer I 'spose.....

I guess as always, the biggest problem will be convincing people. Be interested to see comparative power transfer and efficiency figures.

somethings on a bike have not improved for centuries because they are the best way of doing things

I like the way the boldly claim that their 4 gear system weighs the same as a ten gear alternative - as if that is a good thing .
Things like this never catch on though I would like to ride one- mainly to see if you can actually do a wheelie on one

*crunch*

The sound of Spinergy wheels failing. Not something I ever want to relive.

Firstly I'm not convinced about it reducing knee pain as your knees are still flexing. Secondly I don't like the overall tone of the add as it concentrates on and exaggerates far too much on the supposedly negative aspects of chain drive. What cyclist who knows what he's doing holds the mech the way he did when removing the back wheel for god's sake. Lastly as has been said, it's already been done.

Our frames are designed to accommodate the most popular off-the-shelf components

I didn't realise quill stems were so popular?

What cyclist who knows what he's doing holds the mech the way he did when removing the back wheel for god's sake

yes but we have all had our trousers sheared from our body and end up completely entangled in the chain

A good idea produced by roadies who've only ever ridden in the most conservative manner.

What's the coasting position on hte nubike? Whatever, it's not going to be as stable or as tunable as on a standard transmission, and for this reason its dead in the water. Can you imagine riding a rough descent with this, bum off the saddle, feet more or less right next to each other? No thanks.

Hard cornering on any fast road - again, not a stable position. No thanks.

Nice idea though, and I'd love a go on one. Just for the experience.

It just looks wrong. I would love to have a go on one though.

Maybe we're looking at it from the wrong angle. Instead of a replacement for a conventional bike for us 'cyclists' who want to go out an ride long distances up steep hills and off road, how about as a human powered means of transport to get non-cyclists out of their cars?

It rides like a bike so most people will be able to manage that, but no chain to oil/maintain and it wont leave an oily mark on your leg/trousers. As it's got no chain to get your trousers caught in you can just wear your normal clothes when riding it. It's only got 4 gears but does that matter if your ride is across town to work and it's relatively flat all the way?

I'm all for anything that might reduce the number of unnecessary car journeys. It also looks less daft than those stand up scooter things you 'pedal' like you're walking upstairs so it's a from me.

^^^ I like that perspective, .

how about as a human powered means of transport to get non-cyclists out of their cars?

Problem is it is still human powered and they are too laxy

bikes with "engines"- probably with canopies - and car free routes are about the only thing that will change this

a colleague told me how he "nearly died" cycling the 5 flat miles to work that day and rang his wife for a lift home. This is what we are dealing with.

I know a chap who bought one of these.

https://youtu.be/fjKtoQ9pkl8

I haven't ridden with him since then.

Pedal strike is going to be somewhat unforgiving!

I haven't ridden with him since then.

certainly going to make technical descents much more interesting

Looking for a problem to fit the solution but no luck so far......

johnnystorm wrote: ↑Thu Jul 11, 2019 7:42 pm I know a chap who bought one of these.

https://youtu.be/fjKtoQ9pkl8

I haven't ridden with him since then.

To be fair they seem to be marketing it as an exercise product rather than a bicycle.