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The 1967 BSA A50 Royal Star and 1970 BSA A65 Thunderbolt represent two chapters in BSA's storied history.
The 1967 BSA A50 Royal Star from United Kingdom was powered by a 499cc OHV twin producing 34hp at 7000rpm. Weighing 175.0kg (386 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1970 BSA A65 Thunderbolt by contrast offered 654cc of OHV twin power, delivering 46hp at 6800rpm. Tipping the scales at 178.0kg (392 lbs) with a top speed of 170km/h (106 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
The 1967 BSA A50 Royal Star from United Kingdom was powered by a 499cc OHV twin producing 34hp at 7000rpm. Weighing 175.0kg (386 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1970 BSA A65 Thunderbolt by contrast offered 654cc of OHV twin power, delivering 46hp at 6800rpm. Tipping the scales at 178.0kg (392 lbs) with a top speed of 170km/h (106 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
Specifications Comparison
| 1967 BSA A50 Royal Star | 1970 BSA A65 Thunderbolt | |
|---|---|---|
| Displacement | 499 cc | 654 cc |
| Power | 34 hp | 46 hp |
| Torque | 36.0 Nm | 50.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 155 km/h | 170 km/h |
| Quarter Mile | — | — |
| Dry Weight | 175.0 kg | 178.0 kg |
| Wet Weight | 188.0 kg | 191.0 kg |
| Seat Height | 790 mm | 790 mm |
| Wheelbase | 1380 mm | 1400 mm |
| Fuel Capacity | 14.0 L | 14.0 L |
| Gears | 4 -speed | 4 -speed |
The Verdict
Comparing these two BSA machines reveals the brand's evolution. The 1967 BSA A50 Royal Star laid the groundwork with 34hp, while the later 1970 BSA A65 Thunderbolt pushed output to 46hp. Both share equal collector appeal at 5/10. Either way, both are worthy additions to any BSA collection.
About the 1967 BSA A50 Royal Star
Born in 1967, the 1967 BSA A50 Royal Star is a 499cc twin-cylinder standard motorcycle producing 34hp from BSA.
Full 1967 BSA A50 Royal Star Profile →About the 1970 BSA A65 Thunderbolt
A standard motorcycle from 1970, the 1970 BSA A65 Thunderbolt delivers 46hp from its 654cc OHV twin engine.
Full 1970 BSA A65 Thunderbolt Profile →