This guy had lots of stiff the one bike in the front is a Laverda he had 2 of them. I originally went out to look at a 68 BSA . He was pretty proud of his stuff price wise & obviously was not hurting for money. I did not but the BSA & if I would have it probably would have been an all day job to get it out.
"Power Egg!"
Here's a BSA Hornet one of my western NYS friends raced flat track with in the mid-1960's. He sold the bike, and years later, he bought-back the same bike. It's a resto-mod, and all the OEM parts are safely squirreled-away. BSA used his brothers and him in ads in the motorcycle magazines of the day.
And here's a BSA Gold Star, a single-cylinder bike used for nearly every-type of competition. They raced these, too. This one was restored by the guy on the left in the above ad. Pic taken at a famous bike show in St. Augustine FL several years ago.
I recognized the Laverda. One of my friends from fire-rescue has a Laverda Jota. The top-end of the engine closely-resembles the Honda 305 Superhawk. Both are SOHC designs. The Italians weren't above copying the Japanese designs. If you look at the Italian 2 cyl, 3 cyl and 4 cyl 1970's SOHC bikes you see a strong resemblance to the Japanese bikes, a trend they carried over to their Italian 6 cyl SOHC bikes. The Benelli Sei resembles in the engine compartment, a SOHC 1972 Honda 500-4.
The bike that the BSA is front wheel to front wheel with, is a 1972 Yamaha 250 Enduro. The factory did a great job on those bikes. The 250 Enduro started in '68, and had a production run in very-much the same configuration, to 1973. Along the way, they improved suspension components, and also released a
'for off-road use only' version in both 250 and 360cc. There were smaller displacement enduro/dual-purpose and off-road versions too. Their first off-road use-only bikes were modified enduro streetbikes, like the DT-1MX (250cc) and the RT-1MX (360cc) then they went to bikes designed for off-road use only (YZ-250, YZ-360), which were designed from the ground-up for competition. There was one year of the YZ's with twin-shocks, and then they changed the market with the famous Monoshock design.
'Game-changer!'
I have a '72 RT-2 Yamaha Enduro I bought new, 49 years-ago this month, it was < $1,000 before taxes. I still have it. Unfortunately, it doesn't look like the one, below! It appears identical to this one, except the color is silver, a very-handsome bike.
If you had seriously big
cojones, you could try-out the Yamaha SC500, an off-road competition-only bike that put fear into the strongest of men, due to its abrupt powerband. A popular fix of the day, was to use a Chevy V8 capacitor, in-place of the OEM one, to modify the power-curve a bit, so the rider at-least had a chance to hang-on.
The Suzuki TM-400 Cyclone was available in both an enduro (road-legal) and off-road competition version. It had a reputation of being a particularly evil-handling bike, with a strong and abrupt powerband. No it was
not "just-like the one Joel Robert rode!" despite what your buddy riding one would proudly proclaim. Joel Robert rode one with magnesium components and a titanium frame, and it had to be ballasted to meet the just-over 200 lbs. class minimum. They even had steel slugs in the axles, so they could pass the 'magnet test,' by the scrutineers at the races.
TM400 Cyclone motocross (bring your St. Christopher medal, er, 'make-that two of 'em!')
Suzuki TS400 Apache only slightly less-lethal enduro, street-legal, read the article below, linked.
SUZUKI TM400 CYCLONE - The most dangerous bike ever built : Off-Road.com