AL P
11-11-2009, 12:08 PM
you can use these as long as you know a base line for your sled...so for example..if you know, that your sled has a good mix at say 15F with 143.8`s..then put your jet size in the 1.00 slot, and make the -40, 15F..
then just go up, or down however many number changes it shows for a given temp or altitude change..
hope that explanation made sence..
Basicaly, you would go down roughly two/three numbers for every 1000ft altitude, and up two/three numbers for every 20F change..(20F colder)...this would just be a base line, and would need fine tuned...
http://img402.imageshack.us/img402/9058/jettingchart2.jpg
http://img689.imageshack.us/img689/4048/jettingchart.jpg
this chart is for a differant carb then what our vmax4`s use..but somewhat close...our vmax4`s, have fuel screws, not "air screws", but other wise, they give ya a good idea..
http://img213.imageshack.us/img213/6701/jetchart.jpg
then just go up, or down however many number changes it shows for a given temp or altitude change..
hope that explanation made sence..
Basicaly, you would go down roughly two/three numbers for every 1000ft altitude, and up two/three numbers for every 20F change..(20F colder)...this would just be a base line, and would need fine tuned...
http://img402.imageshack.us/img402/9058/jettingchart2.jpg
http://img689.imageshack.us/img689/4048/jettingchart.jpg
this chart is for a differant carb then what our vmax4`s use..but somewhat close...our vmax4`s, have fuel screws, not "air screws", but other wise, they give ya a good idea..
http://img213.imageshack.us/img213/6701/jetchart.jpg