Register Community Calendar Today's Posts Search

Go Back   GZ 250 Forums > GZ250-Specific > Instructional Articles

Reply
 
Thread Tools Display Modes
Old 07-21-2017, 12:53 AM   #301
Razorburns
Member
 
Razorburns's Avatar
 
Join Date: May 2017
Location: Portland Oregon
Posts: 66
One of the 1st things I did was put on a 16 toother (so easy to do, how could I not). I didn't get out much before the switch so I can't really comment on speeds before hand, but with the 16, I get around 65-70 mpg and comfortably hit 60. Over that it starts to get really buzzy and high revved.

Wondering about getting a 1 tooth smaller rear sprocket to take down the revs a bit more at the top end. From what I can tell, there still seems to be enough of power left, I'm just starting to run out of revs. over 65ish.

Insights?



Login or Register to Remove Ads
Razorburns is offline  
Reply With Quote
Old 11-15-2017, 11:56 PM   #302
initialtvb
Junior Member
 
Join Date: Nov 2017
Posts: 2
Quick Question

So I've changed out the OEM 15T to the 16T, the problem is that I don't feel the difference.

I still have to change it at the same speed, if I wait for it to reach around 15, then the engine is revving way too high.

can anyone help me with this problem?

Please and Thank You.
initialtvb is offline  
Reply With Quote
Old 11-16-2017, 03:23 PM   #303
Vegas Street Rider
Senior Member
 
Join Date: May 2015
Location: Henderson, NV
Posts: 1,108
Where you really gain with the 16t sprocket is on the higher end. There is a barely noticable advantage in 1st and 2nd but at higher cruising speeds, you can comfortably travel at 60 to 65 without the engine screaming for mercy. The big advantage to the 16t is that it will help prolong the life of the engine if you are constantly travelling at the higher speeds by reducing the rpms.



Login or Register to Remove Ads
Vegas Street Rider is offline  
Reply With Quote
Old 12-11-2017, 11:07 AM   #304
kilo0195
Member
 
Join Date: Jul 2017
Location: Illinois
Posts: 52
I also wouldn't drop the rear sprocket any with the 16t front. It may seem like it could handle it but these bikes make very little torque stick. Losing a tooth on the rear is just going to further reduce torque and the rpm difference will be negligible imo.
kilo0195 is offline  
Reply With Quote
Old 04-07-2019, 05:31 PM   #305
wacio
Senior Member
 
Join Date: Apr 2016
Location: Illinois
Posts: 174
I left original 15 tooth sprocket in place. These engines are not pressure lubricated (10 psi oil pump just squirts oil on the moving parts). All crank shaft bearings are roller bearings. This type engines are designed more to run at higher rpm rather than higher loads. As proven by many there is no top speed gain to be had, just weaker acceleration netting performance loss. The only reason to to the swap is to limit vibrations at cruising speed. But vibrations are minimal any way (thanks to balance shaft).



Login or Register to Remove Ads
wacio is offline  
Reply With Quote
Reply




Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:35 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.