For the Twinkie is 5500 RPM. Does this mean that I could run my bike all day long at 5500 RPM? Or, like cars, is this just the redline of maximum RPMs that you can hit for a short duration? If 5500 is not sustained, then what would be a good maximum number that would yeild the most reliability and long-term use of the engine?

My Shadow would run 3400 rpm on the highway sustained at 75-80mph. We take long trips, so we run this way for hours and hours and hours.

(Bike in question is a 99 Road King)

 

At 60 my FXDX is running 2,500 rpm, and 4,500 rpm at 100 mph. I have ran at 85 for a couple of hours, but thats all.

bob

 

Sorry, can't help with this one. No tach on my bike[:@]

 

I think the RK will run as fast as you ought to be going all day long.... As stated, 100 mph isn't redline.

 

I have read somewhere (don't hold me to this) they were tested at a hundred MPH straight for 24 hours. Not real sure if that is true.

 

ive always gone with 3500 is a good cruising rpm for long sustained speeds. ive 95 for maybe twenty minutes at a time when able to

 

Yeah, like those silly speed limit signs, I take these kinds of things with a grain of salt... Seems like everyone is trying to cover their ***, I have not done it, but I am pretty sure you could run it at 5,500 all day, as long you are moving. My little 1400 trude was only a four speed, ran it over 100 for 600 miles with my girl plus another 50 pounds of bagage on the back, did I mention it was only a four speed?
If that little POS bike could do that, my Harley better be able to as well...

 

I've sustained 80 - 85 for numerous hours. Naturally stopping for fuel

 

We never got under 100 mph on our way home from the harley drags a few weeks ago. Probably about 40 miles, no problems. No tach though, so I have no idea what the rpm's were.

 

last month blasted across TX & OK 90-95 mph and she just purred along. I been ridin HDfor many a yr,have never really worried about this stuff even on my old 64