Bicycles

Dutch brothers ride out "perfect urban e-bike"

Dutch brothers ride out "perfe...
The Delta S is Mokumono's first ebike
The Delta S is Mokumono's first ebike
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The Delta S features a zero maintenance Gates Carbon Belt Drive
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The Delta S features a zero maintenance Gates Carbon Belt Drive
The frame-integrated battery is charged via a Rosenberger magnetic charging port
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The frame-integrated battery is charged via a Rosenberger magnetic charging port
The Delta S is Mokumono's first ebike
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The Delta S is Mokumono's first ebike
The Delta S rides on 27.5-inch Ryde Andra rims wrapped in WTB Horizon tires
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The Delta S rides on 27.5-inch Ryde Andra rims wrapped in WTB Horizon tires
The 250-W rear hub motor provides assist up to 25 km/h, but even when the motor is not engaged the Delta S is described as offering an effortless ride
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The 250-W rear hub motor provides assist up to 25 km/h, but even when the motor is not engaged the Delta S is described as offering an effortless ride
The Delta S can be had with GPS tracking
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The Delta S can be had with GPS tracking
The 250-W rear hub motor provides assist up to 25 km/h
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The 250-W rear hub motor provides assist up to 25 km/h
The Delta S comes with a Brooks Cambium saddle and Ergon GA3 grips
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The Delta S comes with a Brooks Cambium saddle and Ergon GA3 grips
The Delta S frame is made by pressing sheets of aluminum into shape, before being joined together by a robot laser welder
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The Delta S frame is made by pressing sheets of aluminum into shape, before being joined together by a robot laser welder
Exploded view of the Delta S frame
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Exploded view of the Delta S frame
View gallery - 10 images

We last caught up with twins Bob and Tom Schiller of Amsterdam's Mokumono Cycles in the middle of 2018, when they announced the Delta commuter bike featuring a laser-welded frame. Now the company is readying its first ebike for shipping in July – the Delta S.

Like the commuter bike before it, the frame of the Delta S is made by pressing sheets of aluminum into shape and then using a robot laser welder to join them together. It's a process that means that all Mokumono frames are all manufactured in the Netherlands, as opposed to being produced elsewhere in the world and assembled at the company's shop. This is something that the Schiller brothers are very proud of.

The Delta S frame is made by pressing sheets of aluminum into shape, before being joined together by a robot laser welder
The Delta S frame is made by pressing sheets of aluminum into shape, before being joined together by a robot laser welder

The S – which is described as the "perfect urban e-bike" – has the same floating rear frame stay as the Delta commuter bike, and the use of aluminum makes for a relatively lightweight 14.5-kg (32-lb) ride, which is a tad lighter than the Pressed E-bike from Italy's Leaos that uses a similar frame production method.

This single-speed ebike sports a 250-W rear-wheel hub motor for up to 25 km/h (15.5 mph) of pedal assist, with a Thun X-Cell 3.0 torque sensor helping to kick in that assist when needed. Its 250-Wh in-frame battery offers a per charge range of 60 km (37 mi), which the team says should cover most commutes. A full charge via the Rosenberger magnetic charging port takes a couple of hours.

The Gates Carbon Belt Drive in play here means no more oil-stained riding gear and ties in well with Mokumono's low maintenance ethos. The Delta S rides on 27.5-inch Ryde Andra rims wrapped in WTB Horizon tires, and stopping power comes from Magura hydraulic disc brakes. It wirelessly connects to the Mokumono app running on a smartphone, which displays battery status, selected power mode, route navigation and optional GPS tracking and motion sensor alerts.

The Delta S rides on 27.5-inch Ryde Andra rims wrapped in WTB Horizon tires
The Delta S rides on 27.5-inch Ryde Andra rims wrapped in WTB Horizon tires

Elsewhere, after dark city adventures are illuminated by Supernova lights, there's a Brooks Cambium saddle and Ergon GA3 grips for rider comfort, and the ebike even has integrated rear fender pannier mounts for carrying a couple of cycle bags.

The Delta S comes in small, medium and large frame sizes, with silver and yellow your frame color options. It's priced at €2,990 (about US$3,275), though it will cost you another €149 if you want the GPS tracker included and €250 more if you want to choose your own frame color.

Mokumono has also partnered with Get Bike Service for delivery, setup and service at home or at work for customers throughout the Netherlands, Germany, Belgium and Denmark.

Product page: Delta S

View gallery - 10 images
3 comments
TechGazer
An obvious imperfection is the riding position: the handlebars are too low to be comfortable. That position might be appropriate for racing or mountain climbing, but causes back and arm strain on long easy rides. Don't design based on the marketing photos for extreme sports bikes; figure out the best body position for commuter riding. For short commutes, where back and arm strain aren't an issue, you don't need an expensive e-bike.
Bruce Anderson
I think that the commuters following this bike on a wet road would appreciate a rear fender that would keep the water from flying up in their faces.
William Lee
Agree with "TechGazer". I no longer "Commute"; I Ride 15-30km at least every other day for Health. This riding position is not comfortable for me. I have found the very "Good" quality Hybrid Frames to be best for me. $500-800, complete. I'm near, but outside NYC, with better-maintained Roads. This rather spendy e-bike does not look like it will ride well on NYC Streets. Quite interesting innovative Frame Manufacture. I've never ridden a Belt-Drive before, it looks interesting, but Chains and Derailleurs have come quite a long way and work well, inexpensively. Market Niche: Wall Street fancy SportsCar Fashion Statement. If I won The Lottery, I'd buy a Materia Wooden-Framed Work-of-Art Bike.