For the 2002 model year, the Yamaha YB-1 Four motorcycle has a listed dry weight of 183 lb (83 kg).
Yamaha YB-1 Four weight overview
Its low overall mass should be most noticeable off the throttle: moving it by hand, backing out of a parking space and managing stop-start riding should take less effort than on a heavy road bike. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Very Light Motorcycle
Dry weight
Bike + rider total weight
These totals use the model’s representative dry weight. They exclude riding gear, luggage and a passenger.
Yamaha YB-1 Four weight & related specs
| Model years covered | 2002 |
|---|---|
| Dry weight | 183 lb (83 kg) |
| Engine displacement | 49 cc |
| Power | 4.1 hp |
| Torque | 3 lb-ft (4 Nm) |
| Fuel capacity | 1.9 US gal (7.2 L) |
| Full-tank fuel weight (estimated) | 11.8 lb (5.4 kg) |
Useful weight calculations
| Horsepower per 100 lb | 2.24 hp / 100 lb |
|---|---|
| Pounds per horsepower | 44.63 lb / hp |
| Torque per 100 lb | 1.61 lb-ft / 100 lb |
| Displacement per pound | 0.27 cc / lb |
| Weight per 100 cc | 373.4 lb / 100 cc |
| Fuel weight as % of bike weight | 6.5% |
| Weight with full tank | 194.8 lb (88.4 kg) |
What the weight numbers tell you
Yamaha YB-1 Four weight FAQ
What is the Yamaha YB-1 Four dry weight?
The available dry weight is 183 lb (83 kg). Actual ready-to-ride weight will be higher after fuel and operating fluids are added.
How much does a full tank add to the Yamaha YB-1 Four?
Based on the supplied 1.9 US gal (7.2 L) tank capacity, the gasoline itself weighs about 11.8 lb (5.4 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha YB-1 Four and rider weight?
Using the model’s representative dry weight and a 180 lb rider, the combined bike-and-rider mass is about 363 lb (164.6 kg) before riding gear, luggage or a passenger.
What is the Yamaha YB-1 Four power-to-weight ratio?
Available model-year data produces 2.24 hp per 100 lb. It shows engine output relative to motorcycle mass rather than just quoting peak horsepower.
Is the listed Yamaha YB-1 Four weight ready to ride?
The published usable figure is dry, not curb weight. A simple dry-plus-full-fuel estimate is 194.8 lb (88.4 kg), but that still is not a substitute for an official wet/curb specification.
What is the estimated Yamaha YB-1 Four weight with a full tank of gas?
The page calculates about 194.8 lb (88.4 kg) with a full tank by adding the listed fuel mass to the dry figure. Treat this as a practical estimate, not an official Yamaha curb-weight number.
What is the Yamaha YB-1 Four torque-to-weight ratio?
Where compatible torque and weight figures are available, the model works out to 1.61 lb-ft per 100 lb. This gives more context than torque alone because it relates engine twist to the mass it has to move.
How large is the Yamaha YB-1 Four engine for its weight?
The available figures work out to 0.27 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
Where will I notice the Yamaha YB-1 Four weight most?
The weight itself is unlikely to be the main difficulty. Rider reach, steering lock and where the mass sits may matter more at walking pace.
Motorcycle specifications can vary by model year, market, equipment and the exact dry/curb-weight definition. Calculated fuel-weight and ratio figures on this page are estimates derived from the supplied specifications. Confirm critical figures in the owner’s manual or on the official Yamaha Motorsports website.