82 cb750C sprocket questions

[mechanic2686]

I have a 82 cb750c and at 60mph im at like 5000rpm i would like to lower that and was wondering what sprocket combo would get me around 3500rpms at 60mph

[shinyribs]

Unless your area is perfectly flat your bike will struggle at that rpm at 60 mph. 5k rpms doesnt phase these engines. They are made to rev and they do well with it.

For what it's worth, I cruise 60 mph at 6k rpm. Rock and roll....

[Re-run]

Yep, just get used to it. As is typical with inline 4s, power comes on in midrange to upper rpm. Low rpms barely have anything. You can get a set of cb900 cams to drop in and that will perk things up a little but they are still made to rev.

[mechanic2686]

Ok thanks a lot guys im not familliar with these engines as the bike is new to me im still getting used to it. Thanks a lot

[rich]

Think of this way. 5000 RPM is about half way to the redline. 60 MPH is about half way to the bike's rated top speed, which is ~125 MPH. So if you're cruizing at 5000 RPM and at 60 MPH, you are only half way into the bike's maximum limits. That engine isn't stressed at all by running at 50% of its maximum.

If you're getting a buzz in your handle bars, which bothers you, look into getting some bar end weights. These well quel the vibration.

[LukeM]

My son would routinely rev his CB550 up to 9000 (and higher) just to hear it roar in a tunnel or when downtown.  My other son's 250 Ninja redlines at 14000.  Mean little roar to these bikes when you do that.

Every once in a while, I'll goose the throttle on my Shadow to 7000-8000.  Fun stuff.  You think it'll fly apart, but they hold up well.

Luke M

[mechanic2686]

Thanks guys i know they say there is no such thing as a stupid question but im a mechanic and just feel like i should know these things lol. But thatks for all ur imput.