gearing for yamaha shifter
Moderators:Jay Kleinheinz, Paul Jones, Mark Chandler, Scott Boone, Matt Blehm
-
- Posts:11
- Joined:Wed May 28, 2008 4:57 am
I am all new to this and want to get right or close the first try. I just built a shifter kart with a yz 125. I need a rear sprocket to get it going. Katy is the only track I will go to just for fun, not to race. What gearing do i need? I talked to a couple of Honda guys, is the yamaha pretty close? Please help I am ordering a chain and sprocket today. I want it to haul. I have a 14 15 16 18 and 19 for the motor, just need to know what rear sprocket.
-
- The master poster
- Posts:49
- Joined:Fri May 11, 2007 12:25 pm
- Location:Houston, TX
Shawn,
Brad had this comment:
Brad had this comment:
He was suggesting a 1.8 ratio.I tried to race at the first race but had a broken reed so the motor wasn't running right. I had a 15/28 but probably needed a change maybe to 15/27. I run a stock Honda but I'm a heavier guy, crossing the scales at about 420, if you're close to 385 it might be different.
-
- Posts:11
- Joined:Wed May 28, 2008 4:57 am
thanks
I will try a 15 27, hope it works.
Shawn
Shawn
stock 125 gearing
Shawn, when we came down to your track for the SWRC race and ran the track clockwise all of us in the stock 125 class were geared at a 15/24,and turned times in the high 39's on Sat. Sun was hotter and a flat 40 was our best.This was on Brigestone "C"s for the event,if you run MG yellows it could shave off a 1/2 second or more we find.
-
- The master poster
- Posts:71
- Joined:Thu Aug 16, 2007 1:17 pm
- Location:Houston Tx
- Contact:
-
- Posts:11
- Joined:Wed May 28, 2008 4:57 am
motor
Mine is a mod. It has some port and cylinder work done.
Shawn
Shawn
-
- Posts:11
- Joined:Wed May 28, 2008 4:57 am
gear
Actually now I have a 15-26 gear and it feels short. I want it to haul top speed. I am going to put a 16 or 17 on the motor. I will go to Katy next week for the first time, I just got it running and tried it out at the airport this weekend. I did notice the shifters are strung out about halfway down the straight. Why are they not geared different? I went to the race and watched Sunday for the first time. Those shifters haul but they could get another 20mph on the straight geared different. Does that just make them weak out of corners? I might put a CR 500 on mine soon. I am not racing, just playing. I want mine to go 200. LOL!!!
-
- The master poster
- Posts:71
- Joined:Thu Aug 16, 2007 1:17 pm
- Location:Houston Tx
- Contact:
Who is online
Users browsing this forum: No registered users and 3 guests