Gear ratio question

[GS550joe]

I want to have less rpms at the current same speed... from what I think I know.. if the ration of front to rear gear teeth is 3.33 and the new ratio is 3.00 then the bike should rpm slower for the same speed

Is this correct?? all factors stay the same and bike is a 78 550 with 15 front and 50 rear 530 chain.. don't know what the tranny ratios are .. 19 front wheel and 18 rear wheel..

only looking at the two sprockets am I on the right path??

[Billy Ricks]

Just go up one tooth on the front sprocket.

[GS550joe]

need both anyway

I need both any way.... was looking for some encouragement that I was headed into the right direction.. I was looing at keeping the stock 15 on the front and going to a 45 on the rear.. looks pretty close in the front for mooving up a tooth.. I did consider a 16 front and 48 rear..

since both are needing to be replaced when I buy the chain..
Joe

[Billy Ricks]

There's nothing you can do about tranny ratios so sprockets are the only way to accomplish your goal. RPM for any given speed and gear should drop by about 10%. As long as you aren't worried about screaming acceleration the ratios you are considering should be fine.