I meant the Helix Ultralight.
It's a titanium bike, and yes, it's a niche category because it's not an affordable bike.
- Lightweight
7.95 kg for the Brompton T-line, 9.2 kg for the Helix Ultralight.
Considering that the standard weight of a folding bike is 12-13 kg, the difference is not significant.
All the more so as the T-line has a lower-end transmission.
- Compactness folded
T-line: 645mm x 600mm x 320mm (25.4'' x 23.6'' x 12.6'')
Ultralight: 635mm x 711 x 267mm (25.0" x 28.0" x 10.5")
Again, the difference is not significant. The Helix is less wide when folded, which is important in some situations.
- Utility folding bike
There is still no official range and this is a bad business decision.
However, a big advantage of the Helix is that they have a non-proprietary approach, unlike Brompton.
Helix claims that their bike is compatible with the widest range of accessories on the market. This is probably true, as the Canadian couple used the Helix on their bike trips in Portugal and Greece.
- Fast folding bike
I don't know, it seems fast enough.
As with everything in life, you have to compromise and buy the product that best suits your needs.
Helix has a strong card to play in the market, but their products need to be available and promoted.
Vello seems to be successful and has interesting bikes.
The more competition there is in the market, the better it is for everyone.