Schiller S1-C Water Bike
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Schiller | S1-C
The S1-C is the only bike Schiller builds, and the parts a cyclist already knows are the parts Schiller kept. You sit on a saddle, steer through the handlebars and pedal. Under the frame sit two reinforced, high-pressure, drop-stitch pontoons, and Schiller's specification puts the complete bike at 87 lb (40 kg) with those pontoons attached. Rider capacity, in Schiller's words: Up to 300 lbs (136 kg). Assembly runs under 10 minutes with no specialized tools, and the bike fits inside most hatchbacks and SUVs, which is why neither a trailer nor a roof rack enters this purchase.
The drivetrain is a Gates Carbon Drive belt feeding a patented raisable outdrive, geared at 1:7.5 from the cranks to the propeller. Schiller's product pages give top speed as Over 10 mph depending on conditions, and its separate water bike page adds a cruising speed of 4-6 mph. The frame is TIG-welded T6 aluminum with powder coating, and Schiller rates the bike for both saltwater and freshwater. That leaves two decisions with you: the frame size, where Schiller publishes height and inseam ranges that genuinely overlap, and which of four frame-and-pontoon colour pairs you want. Both are set out further down this page.
Inside the bike
Schiller publishes a short, specific specification for the S1-C and very little marketing around it. These are the four components it names, and what each one does once the bike is in the water.
The numbers
Every figure below is published by Schiller, either in the specification block on the S1-C product pages or on its separate water bike page. Nothing here is estimated.
Closer look
Schiller builds the S1-C in a Medium Frame and a Large Frame, and publishes a height range and an inseam range for each. The two height ranges overlap across three inches, from 5 ft 9 in. to 5 ft 11 in., and Schiller has a view on that band: its Medium guidance reads best for riders 5 ft 7 in. and under, and its Large guidance reads recommended for riders 5 ft 9 in. and taller. So a 5 ft 10 in. rider is inside both published ranges and has a real choice to make. Schiller's own recommendation at that height points to the Large Frame. Inseam is the better tiebreaker of the two measurements, because it is the one that sets how far your leg travels to the pedal: measure from the floor to your crotch in bare feet and read it against the two ranges below.
The S1-C comes apart into modular components: the frame, the two pontoons, the struts that join them and the running boards. Schiller gives assembly and disassembly as under 10 minutes without any specialized tools, and says the packed bike fits inside most SUVs and hatchbacks with no trailer and no external rack. At 87 lb (40 kg) complete, the parts move one at a time. That is the difference between a boat you plan a day around and a bike you throw in the car after work, and it is also why Schiller sells the struts and push pins separately: those are the pieces that come off and go back on every single ride.
Schiller describes the ride as immediately familiar: steering comes through the handlebars, propulsion comes from pedaling, and the dual high-volume pontoons hold a platform stable enough for a first-time rider while staying responsive for an experienced cyclist. Schiller says most riders cruise comfortably within minutes with no prior watersport experience, and answers no when asked whether balancing is required. Pedals are custom units with a neoprene comfort strap, and the running boards you put your feet on between strokes are laser-etched stained bamboo. Water type is the one environmental question Schiller answers directly, and the answer is both: saltwater and freshwater.
Colours, contents and spares
Schiller names colour as a pair: the frame colour and the pontoon colour, written together. Four of the possible pairs are built, and they are the four you choose from here.
Three frame colours and two pontoon colours make six combinations on paper. Schiller builds four of them. A White frame with Gray-Black pontoons and a Black frame with White pontoons are not offered, so a blue frame is the only one you can order with either pontoon colour. Cross those four pairs with the Medium and Large frames and you have the eight ways this bike can arrive.
A new S1-C includes stained bamboo running boards, a manual air pump and an accessory bag. Schiller also sells the wear parts on their own, and we stock them: the complete outdrive assembly, pontoons as a pair or a single pontoon, struts, push pins, steering cables, pedals and running boards. Schiller publishes no bike-model or model-year fitment statement on any of those parts pages, so check your bike against the part before you order a replacement.
Questions
Overall rating: 5.0 / 5 from 2 reviews.
Review topics: [].
"Love the Schiller Water Bike, except the Propeller quit turn and I don't seem to find repair or replacement information anywhere."
"I'll be happy if I can get a fitting for the end of the hose pump that inserts into the floats. Mine. is missing. Thank you."