Originally Posted by
Jipe
About the design, I don't agree with you it has two major issues:
- the tires width isn't big enough, the frame should at least accept 50x507 or even more because ETRTO507 is a wheel size made for wide tires and Helix has a stiff frame and fork and has no suspension, so wide tires are mandatory to provide efficiency and comfort on bad roads.
- the bigger wheel size and helicoidal folding concept are inherently heavy, this is the reason why, even with expensive titanium material, the bike remain heavy which is a major drawback for a folding bike that many people need to carry and also a commercial/marketing problem because people willing to pay such a high price for a folding bike expect a lightweight bike.
I agree that it would be better had it been able to accept wider tires. Absolutely. Same with Brompton for that matter. However, I still think it is a great design. I also would have liked to see it have a taller stem. As for weight, their ultralight does deliver on the 20 pounds for a price that is expensive, but less than a T-line Brompton. Have you ridden one? I have not, so it is ill-advised for me to say it is too stiff.
I just went to their site, and it appears that they're sold and will only notify you of when they will be taking orders. This does not bode well, I think.