i saw one of these for sale in the Seattle craig's listings, it said basically the same thing.
i think the ad i saw said 750. But a very similar story regarding the AMA.Not an expert, but I don't believe the ad. The AMA did change the rules sometime around then, requiring a certain number of bikes to be built of the model that was raced. That's why BSA built the A70, a 750cc twin. There was no 650 class and Triumph would not have built a 650cc bike to race in a 750cc class. The V indicates it's a 5 speed. There were a lot of them made, and a 5 speed would be no advantage in the flat track classes.
The T120RT I mentioned in my previous post was the 650cc to 750cc conversion that was homologated for AMA competition. Manufacturers were required to build 200. The A70 you referenced was the BSA equivalent. On the Triumphs, the bikes were converted using regular production bikes using Routt cylinders and the "T" after the T120R was stamped by TriCor. The description in the ad for the '71 T120V is bullshit.Not an expert, but I don't believe the ad. The AMA did change the rules sometime around then, requiring a certain number of bikes to be built of the model that was raced. That's why BSA built the A70, a 750cc twin. There was no 650 class and Triumph would not have built a 650cc bike to race in a 750cc class. The V indicates it's a 5 speed. There were a lot of them made, and a 5 speed would be no advantage in the flat track classes.
The cause of the failure in the early 5 speeds was a problem in the heat treating that caused the gear teeth of the layshaft second and third gears and engagement dogs to break off. Triumph had over 1,000 T120V's with defective gears in the two US warehouses that had to be changed before the bikes could be sold. No wonder they were going down the shitter.I think the 71 5 speeds had different gears than the later 5 speed. I think the final gear ratio was the same but the in between was different from the other 5 speeds.
ya, Mine is T120RV GE*****
No need to worry about insulting the purist. The '71 is one of the least desirable of all Triumphs, and absolutely the most undesirable "oil in frame" model. Chop away.BTW for the purist out there, this thing is so far gone right now, I think the scrapyard would turn it down.
Tell me about it. Like I said, the gear cluster is worth more than everything else put together.No need to worry about insulting the purist. The '71 is one of the least desirable of all Triumphs, and absolutely the most undesirable "oil in frame" model. Chop away.
Bob
Put a 4 speed in it and sell the 5 speed to a collector.Tell me about it. Like I said, the gear cluster is worth more than everything else put together.