Across the 1972 and 1973 model years, the Yamaha U7E motorcycle has a listed dry weight of 169.8 lb (77 kg).
Yamaha U7E weight overview
This is a genuinely light bike. That usually makes parking, pushing it around a garage and catching small low-speed balance errors easier than on larger motorcycles. 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
How heavy is the Yamaha U7E?
dry weight
Using a model-level dry weight comparison, the Yamaha U7E is lighter than about 92.6% of 47 Yamaha scooters with compatible weight data.
Dry weight
Bike + rider total weight
These totals use the model’s representative dry weight. They exclude riding gear, luggage and a passenger.
Yamaha U7E weight & related specs
| Model years covered | 1972, 1973 |
|---|---|
| Dry weight | 169.8 lb (77 kg) |
| Engine displacement | 72 cc |
| Torque | 4.7 lb-ft (6.4 Nm) |
| Fuel capacity | 1.19 US gal (4.5 L) |
| Full-tank fuel weight (estimated) | 7.4 lb (3.4 kg) |
Weight changes by model year
Useful weight calculations
| Torque per 100 lb | 2.78 lb-ft / 100 lb |
|---|---|
| Displacement per pound | 0.42 cc / lb |
| Weight per 100 cc | 235.8 lb / 100 cc |
| Fuel weight as % of bike weight | 4.4% |
| Weight with full tank | 177.1 lb (80.4 kg) |
What the weight numbers tell you
Yamaha U7E weight FAQ
How much does the Yamaha U7E weigh?
The source data gives 169.8 lb (77 kg) as dry weight. A fueled, road-ready bike will weigh more than this figure.
How does the Yamaha U7E weight compare with similar Yamahas?
Relatively light. On a model-level comparison, it is lighter than about 92.6% of 47 Yamaha scooters with the same weight basis.
Are all Yamaha U7E model years the same weight?
The supplied comparable weight values do not show a meaningful change across the 1972-1973 years covered here.
What does a full tank of gas weigh on the Yamaha U7E?
A full tank works out to about 7.4 lb (3.4 kg) from the listed 1.19 US gal (4.5 L) capacity. Actual fuel density varies slightly, so treat it as a practical estimate.
What does the Yamaha U7E weigh with a 180 lb rider?
The approximate combined total is 349.8 lb (158.6 kg) with a 180 lb rider, based on the representative dry weight used on this page.
How much heavier will the Yamaha U7E be than its dry weight?
Do not treat dry weight as curb weight. Adding the listed fuel capacity alone produces roughly 177.1 lb (80.4 kg); the true ready-to-ride figure can still differ because dry-weight definitions vary.
How much heavier is the Yamaha U7E with a full tank?
The page calculates about 177.1 lb (80.4 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 U7E torque-to-weight ratio?
Available data gives 2.78 lb-ft per 100 lb. That ratio helps explain how strong the engine is relative to the bike’s mass, especially at lower speeds.
How large is the Yamaha U7E engine for its weight?
The model has about 0.42 cc per lb in the available data. This simply shows how much engine displacement there is for each pound of motorcycle weight.
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.