04-10-2019, 05:53 AM
(04-10-2019, 04:37 AM)apex1_imp Wrote: You could probably bounce your CB off the rev limiter all day and not hurt it. That should be true of any production motor, but as an owner of Harleys for almost 30 years, I would not say it would be safe with them. The problem is that the longer the stroke is of a motor, the faster the piston speeds are as the revs climb. "Square" motors with equal bores and strokes can rev higher safely, as can "oversquare" motors where the stroke is less than the bore, keeping piston speeds lower than long stroke motors. With a long stroke motor, a piston has a lot of ground to cover with every revolution of the crankshaft, resulting in very high piston speeds and a lot heat and stress if revs climb too high.
Besides the much higher fuel consumption and with stronger motorbikes the too easily been reached risk of your driving license, I don't think it's a good idea to ride a bike near or in its limits, though some may stand this test better than other. The CB is probably one of the better kind.
The longer stroke in a RE Bullet is the reason why the manufactor advices the owner not to rev the bike hard for a longer time, because the Bullet is not full speed safe. It's a good idea to stick to this advice.
I think it's even a good idea to ride every motorvehicle beneath its highest power to enjoy it over a long time. If something goes wrong with an engine, it is likely the case while riding or driving it too hard or rev it too high.
Wisedrum