Sprocket change difference

[coastalrider]

02' CR250. 13/48. 95% track. Here's the thing: I don't like jumping revved out in a gear. I'd rather build up fourth (slipping the clutch) than jump a wound-up third but I'm just short of power in time. I don't jump much in second because it feels like a rubberband is tied to my frame when going over it and third is still close enough to that feeling like I'm either going to sky the front or drop it (can't get settled in the middle ALL THE TIME) I may later as I get better but here's the question:

Can I change a sprocket to make 3rd feel like low fourth? Basically move the high part of third to the middle of third? At the tracks I ride, I have to really wind third and I'd like that in the middle. I want more throttle but want it to still be in 3rd and not a last sec comfort-switch to fourth.

Also my chain is stretched to the end so I either need to drop a link (sprockets are in good shape still) or will a sprocket change make the chain fit differently ie: 50t needs longer length than 48 and will give me back enough tightening room.

And I don't need "top end speed;" I don't do many drag strips. I've heard top end changes with sprockets, but I'm still a rookie on the tech side of things so maybe I'm understanding that wrong. I've also told myself this is a mental loudness thing (winding it out) and I should get earplugs and be a better rider. lol

Making any sense?

[Charles Owens]

Welcome to the forum!

http://twostrokemotocross.com/2010/12/sprockets-and-gear-ratios-what-you-should-know/

Read through that, should be exactly what you need.

[EJ]

Welcome! 
Your must regularly check your chain tightening.
As for the sprockets:
My dealer always told me to change your chain as well, if you change sprockets.
I'm not sure if that's a rule of thumb, or if he just wanted to make more money...

As for you beiing a beginner, you will benefit more from a bit more bottom end (bigger rear sprocket)
rather than top speed.

[TMKIWI]

Try this.

http://www.microracing.com/forum/blog.php?b=8
Same ratios ive been told.

Or use the chart i posted up in technical.
With the chart you can change the sproket sizes and compare speeds with what you have.

PS Welcome

[SwapperMX]

Welcome! 
Your must regularly check your chain tightening.
As for the sprockets:
My dealer always told me to change your chain as well, if you change sprockets.
I'm not sure if that's a rule of thumb, or if he just wanted to make more money...

As for you beiing a beginner, you will benefit more from a bit more bottom end (bigger rear sprocket)
rather than top speed.

You basically shouldn't put a new chain on old sprockets, cos you will destroy the new chain in no time. If you are playing with gearing, changing between different sprockets is not a problem, as long as the chain and sprockets you are currently using aren't completely worn out.

[MyckMcClung]

my wife says, "Bigger is better."
I think she's talking bout my weight, but it could be rear sprockets.

[SwapperMX]

my wife says, "Bigger is better."
I think she's talking bout my weight, but it could be rear sprockets.

 
        

[ACMX]

hahahaha