RPM at 65 MPH

[old_chopper]

My GS550 doesn't have a speedo or tach. I was riding with my bunch this weekend and we were heading across town on one of the expressways. I didn't have any trouble keeping up but it sounded like the motor was revved pretty good. I matched the stock drive ratio when I put the bike together. What RPM would a stock GS550 be turning in 6th at 65 MPH?

[waterman]

I am guessing around 5000 rpm, maybe a little higher. If mine wasn't sitting on a battery charger, I would go out and give it a go for you. Not sure what tire you are running or if it even matters, may change it a little.

If you are concerned about rpms, don't worry, the 550 was made to rev. I like to keep mine at 6000 or better if possible, here is where it is just starting to make good power. These aren't slow spinning V twins, revs won't kill them. Wind it up and enjoy.

[Nessism]

6000 rpm would be my guess, depending on the gearing used.

[waterman]

I got mine fired up today and at 65mph indicated, showed 5700 rpms, as usual Ed was right. Your gearing, tires, chain, may vary.

[Demonthrall]

yeah, my 55 runs about 6000-6500 at 65mph

[mattocs]

My 1982 GS450L does 4100rpm at 65mhp in 6th gear. It hits 4500rpm at about 72mph.

[Nessism]

My 1982 GS450L does 4100rpm at 65mhp in 6th gear. It hits 4500rpm at about 72mph.

If this is true (not doubting you, rather sometimes the gauges are inaccurate) then the bike has altered gearing.

[mattocs]

Not sure if the PO changed the gearing or what. But it does read that on the tach.

I've only had the bike for 6 months / 1300 miles.