The Vesco 350cc record is over 200, and how many years did it take to beat it and by how much ?
So too with the unlimited record.
Those kinds of records that seem so easy for some and difficult for others have a lot to do with experience and or business.
Could Don have gone faster with the power available ?
Remember, he doubled the power but only set a record 15 mph faster.
If he set it at 350mph, how would it influence any potential competition ?
"If you go for the knockout, you are a hero, if you go for the kill, you are a criminal." (me)