Need more top speed!

1

1998RM250

Member

Nov 5, 2008

426

0

• Nov 8, 2008

• #1

Hey guys I'm running a 12 tooth front sprocket, and a 48 tooth renthal in back... I ride pretty long trails and need more top speed. About how fast do you think this setup tops out at currently? I just want to be able to cruise in 5th at a decent rate without being in the powerband and sippin down fuel.

 

J

_JOE_

~SPONSOR~

May 10, 2007

4,697

3

• Nov 8, 2008

• #2

Try a 13 up front. If that's not enough, get a 14. If that's not enough, get a bike with a wide ratio tranny.

 

1

1998RM250

Member

Nov 5, 2008

426

0

• Nov 8, 2008

• Thread starter
• #3

I used to ride a 95' RMX 250 and it was a beast. I had it bored .40 over, forgot which sprockets I had on it but the bike did over 110 mph!!! Anyone want to trade sprockets?

 

XRpredator

AssClown SuperPowers

Damn Yankees

Aug 2, 2000

13,504

19

• Nov 8, 2008

• #4

1998RM250 said:

I used to ride a 95' RMX 250 and it was a beast. I had it bored .40 over, forgot which sprockets I had on it but the bike did over 110 mph!!! Anyone want to trade sprockets?

Click to expand...

It had a wide ration transmission. The RM is a closed course machine, and the transmission is close ratio to keep it up in the RPM range. The RMX had the wider ratio transmission to get that higher top speed.

 

1

1998RM250

Member

Nov 5, 2008

426

0

• Nov 8, 2008

• Thread starter
• #5

Yeah I loved that bike... Spent $1200 on a rebuild at the dealer, and it blew up 2 months later so I sold it for practically nothing. If anyone wants to trade sprockets send me a pm.

 

J

_JOE_

~SPONSOR~

May 10, 2007

4,697

3

• Nov 8, 2008

• #6

There is NO way you could get me to try and hit 110mph on a dirt bike. That's nutty. 70 is about as fast as I care to go. I prefer to try and go 35 or so in the woods. Rode an XL600 a while back that scooted up to about 90 or 95. That was INTENSE, you could see the front fender almost touching the tire and it felt like the bike was literally floating. Not something I care to experience again.

 

1

1998RM250

Member

Nov 5, 2008

426

0

• Nov 8, 2008

• Thread starter
• #7

yeah i used to ride the old train tracks up north in connecticut, and it there were straight aways over 10 miles long! My front fender was actually permanently bent down from going so fast actually lol... I just need more top speed on this bike, and in 5th gear it seems i can only do about 45 mph before your in the powerband.

 

D

diesel23

Member

Nov 10, 2008

19

0

• Nov 12, 2008

• #8

you go the wrong bike for that