Hello everyone. new here to, so excuse my ignorance! bought the kids a 2006 polaris last year and they had a blast, this year bought another 2010 polaris so they wouldn't fight so much (neither one wanted to ride my original 1972 artic cat kitty cat ) So most of there riding is going to be strictly trail,lake, but I do want to get them into some drag racing. We don't have a lot of snow cross around here, and not sure why but just don't. So my question is whats worked for setups, what hasn't. Are the kits out there for the 120 good enough or a waist? I don't want to go full engine mods yet until I now they are interested, but its a good possibility for next year. If I remove the governor gear, does that mean she is wot and that's it? Or is there a way to slow them down if they are getting reckless? I have been looking for a scamatic (word?) so I can see what to remove, but cant seem to find anything. Would like to do some clutching, maybe exhaust, definitely a widening kit, jet cab adjuster. Any suggestions or help would be greatly appreciated. I have been searching for valve adjustment specs but cant find anything on that either Thanks in advance!
Post by Bob Vehring on Oct 24, 2012 19:42:03 GMT -5
If you follow the carb linkage you will find a arm and a spring set up, that is you gov. it limits the engine to about 3600 rpm at wot. Some people just use a tie wrap to stop it from slowing the engine down however the gears inside will then still be spinning at a much higher rpm. The safe way to do is is take off the side cover and remove the gears inside for the gov. there may be a small washer behind the gear, remove it also. You throttle will still control the engine like normal, it will now just rev up more Do a search on Goodwin Bros. racing in Zion Il. or Recreational motorsports in Iowa either one will have the adjustable jet kit and maybe the ft end widening kit
Post by olywhizzer on Nov 20, 2012 16:32:11 GMT -5
Hello all, another newbie here.... I am in need of some gearing advise.. My boy is just starting to race in the stock class at erx and is a pretty aggressive rider on his dirtbike and wheeler, so he's familiar with riding, just wondering where to start with a ratio or gear setup? Any help would be great... Thanks guys
Hi, it's hard to give gearing advice without knowing about your sled and weight of your son. But as a starting point I would not go below 3.2 gear ratio for snocross, which will give you a 42 rear sprocket with a 13 sprocket hub, to start with you are probably best off with a 45 tooth rear and you can play with it and move 2 sizes up or down from there.