Anyone have one?

I also can't seem to find any info on gearing inches anywhere online?

What could the gearing inches be raised to with this set up?

SPECIFICATIONS

Wheel Size: 16 inches
Weight: 21 lbs
Speeds: 3

Sizing

SP-HB Min: 540 mm (21.2in) Max: 560 mm (22in)
Saddle to Pedal Min: 620 mm (24.4in) Max: 850 mm (33.4in)
Rider Height Range: 140-180 cm (4`7-5`11)
Rider Max. Weight: 100 kg (220 lbs)

Bike

Weight: 21 lbs
Frame: Hydroformed Dalloy Aluminum w/ Integrated Jiffold Vertical Hinge Technology
Fork: Lightweight and Responsive Dalloy Aluminum, w/ Integrated Crown
Handlepost: Forged Alloy Radius Telescope w/ Fusion Technology, Adjustable

Wheels

Rims: 16in Lightweight Double Wall w/ CNC
Front Hub: DAHON Custom Ultra Narrow Sealed Cartridge Bearings 20H
Rear Hub: DAHON Custom Ultra Narrow Sealed Cartridge Bearings 28H
Spokes: 14 g Stainless ires Primo 16in x1.2 60 TPI

Drivetrain

Cranks: Forged Alloy 39 Tooth Chainring w/ Single Guard
Bottom Bracket: Sealed Bearing
Chain: KMC Z410 All Weather
Rear Cogs: DAHON Custom 9/11/13t
Gear Inches: 40.4, 47.7, 58.3
Handlebar: DAHON Urban 500 mm Wide w/ 6 Degree Sweep

Cockpit

Grips: DAHON Ergo Comfort
Headset: Fusion, Zero Stack, Cartridge Bearing
Brakes: Front Forged Road Alloy Caliper, Rear Alloy Forged Mini V 85 mm
Brake Levers: Avid BL FR5
Saddle: DAHON Ergo Comfort
Seatpost: DAHON 6061 Aluminum 30 x 350 mm
Pedals: Quick Draw Quick Release 1 pc Alloy Body
Kickstand: Lightweight Alloy

The chain is almost touching the rear axle. Don't now if you could change the gearing. I had one for about a month. Sold it and got a brompton. What would you like to now?

I would really like to get to around 100" so it looks like that isn't possible then?

I don't know for sure to be honest. But also what is your length? You shouldn't be longer than about 175cm. Ideally 170cm long.

This is a slow city commuter, so I'd recommend passing on it.

Also, Brompton isn't the only brand to consider. Have you looked at Downtube, Tern, Bike Friday, or even a Xootr Swift (discontinued, so you can get an 8 speed model for $599, and the parts are all standard and easily upgradeable - UNLIKE A BROMPTON).

185cm but I think I have slightly shorter legs and long torso.

Looks like the Downtube Mini may be an option (wish they made that Ferrari version in 16" wheels as it looks kind of fun). Again can't seem to find the gear inch range for this bicycle will have to do some more research.

Tern doesn't make 16" folders at least in the USA

Not a fan of the Bike Friday or Xootr Swift look.

The owner of Downtube is a member of the forum, so he can answer questions for you. He makes some excellent bikes.

Downtube

I'd personally recommend the 11 speed model:. https://downtube.com/downtube-minib-...-folding-bike/

Why the beltdrive?

I've tried this bike in the shops here before deciding on a Tyrell IVE.

100" is not possible (one of the reasons I passed)
Any larger chainring than the stock one and the chain scrapes the rear of the frame.

I also found the fold unnecessarily complicated for what is still a 'fold the frame in half' type fold.
Of course one can get better at it w/ practice (I did it many times in the store to get a good feel of it)

The 3sp gearing was also kind of pointless for my needs, feeling too closely packed to make a meaningful difference to even just a single speed bike (though I'd say a 3sp IGH has the same issues).

Its not a bad bike, really nice build quality and interesting fold.
Rides well too.

Less maintenance, no need to oil chains, less noise, belt is quiet, less mess, no greasy pants leg. There are also chain models available,...browse the site.

I disagree with the OP's requirements. My first requirement would be comfort ( suspension ) and second would be a super low gear for climbing. I toured across the country twice and averaged 12.5mph. Hence I'm confused by the 100 gear inch requirment.

The mini gear inches is located at the bottom of the page. The chain drive model says:

Chainring/Cog: 52T/25T
Gear Inches: 28 ( 1st gear ) - 91 ( 8th gear )
Chain: KMC Stainless Steel

Thanks
Yan

Thanks Downtube (Yan),...

FWIW The popularity of Brompton has spawned a number of SEA companies with CNC machines
making alternate parts ..
for those who have the funds to replace some of the plastic ones the company fits.

For that the EEZZ D3 would need to be fitted with a Schlumpf Speed Drive crankset.

gears.jpg

If I understand correctly a german guy on the "faltrad de" forum says there is a kind of alignment problem with the chain that makes the 1st & 2nd gear noisy ... only the 3rd gear is silent and good ... would you confirm that ?? thanks !!

I don't have one and have never seen it, but from what you say, assuming that the chainring is centered to the outer cog, the angle of the chain when just 2 cogs over isn't that big of a difference if you compare it with something like 8, 9, 10, 11 speed cassettes. If you're worried about the chainline, you could always measure the chainline at the cassette and at the chainring, then adjust the chainring position, either with bolt spacers, or using a different length BB or BB spacers.