Hi guys! I am thinking of buying a set of Kold Kutters for my WR 300 for the iceracing this winter. I have been using different types of screws, but it´s not reliable enough. Does anyone of you guys have any experience of these screws? I know they come in different lengths, and i wonder how you do to keep the tyre solid if you can´t use a hose? Any reflections on this is very welcome! Johnny.
In the past, I've used Pro Gold Ice Screws in the front tire. This year I'm using Kold Kutters. They work well for me, but I'm trail riding on snow, ice and frozen ground, not ice racing. I use screw in studs for the rear tire..
For serious ice tires, you need to use a liner inside the tire and long screws. I've used Kold Kutters and Kimpex Canadian screws. The Kimpex are not legal for AMA competition here. There used to be commercial tire liners availible, but I haven't seen them in some time. Most people use old street tires with the beads cut off for liners. It's a little trial and error, but various size tires will fit inside 21", 18" and 19" tires. You might have to use the smallest tube availible to get it inside the tire/liner combo. Use a screw with a shank length that will screw through the tire and into the liner. You get best results installing the screws in a mounted tire with 80psi, so screws seat in liner.'' You need to use tire covers to keep edges on the screws, when not on the ice. You can buy commercially made ice tires from Jeff Fredette..... http://www.frpoffroad.com/Motorcycl...l.htm?productId=-162909&catalogId=-1039&fpg=1 For trail riding, I use Gold screws, without liners... 7/16" shank length for front, 1/2" shank length for rear. I usually get a couple seasons out of them with minimal screw loss.
Thanks! very good info! I have an old 17" Supermoto fronttire that i intend to use on the inside. One of the guys at the ice yesterday don´t use any airpressure in his rear tire and he has done the way you explainede, and he has a LOT of grip.
If you want the absolute best tires and screws made for ice, you gotta go with the MF1 screw by Marcel Fournier. http://www.marcelfournier.ca/index-en.php If you are riding trails in the winter you will find that ice screws wear out fast or tear out, use a Trelleborg or Michelin winter tire with the hardened tips allready inserted.
