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Introduction
Vintage snowmobiling was designed by retired Snopro racers who wanted to relive their racing experiences and memories, but did not have the physical stamina and money required to field one of their old Sno-Pro sleds. The racing of vintage snowmobiles has grown into a major sporting event on the Canadian prairie over the last few years.
Basics of Racing
Rules
It is acceptable to cut, port and plane;
The points stay in;
The muffler is stock;
The race is 100 miles long;
Depending on OEM carb type, racers are divided into two classes: HR or HD;
There are additional rules for safety and reduced expenditures.
Costs
There is a $50 entrance fee since a snowmobile that is competitive and ready to race can cost 2000 to 3000 dollars. The first race had five entries, paid $125.00 to win, $75.00 for 2nd and $50.00 for third. With the increased popularity of the sport, it is not uncommon to see up to 50 riders, which results in larger cash rewards.
Strategies
While the majority of racers race in a team of two drivers and one pit person, it is possible to race without a team. A race usually takes over three hours with one or two stops to refuel. This sport can be begun by anyone who finds three other people with older single sleds that run and designates a 2 mile course. It is likely that other people will soon join in due to the popularity of the sport. Different snowmobiles are seen at these races and include Auto-Ski, Massey, Cats, Skiroules, Rollo-Flex and TNTs.
Restoring a vintage snowmobile
After buying a vintage snowmobile, or if you have one, it will need to be restored.
Axle and Bearing
The drive sprocket pulls the track over the top from the back resulting in the snowmobile pulling itself over the snow, rather than pushing itself.
To replace the bearing, remove the rear drive wheels from the shaft. The rear wheels are where the first pressure will be felt by the chassis. Removal of the rear axle is also sometimes required. A common snap ring set of pliers help with the process, but are not mandatory. Loosen off the track, remove the bolts and tap the wheels loose. Most wheels have the bearings inserted in their center. Pop out the ring and push the bearing out. All bearings are sized according to inside diameter (ID) and outside diameter (OD) and width. Some bearings have numbers on them but if not, the ID, OD, and width can be measured and a bearing can be found at a bearing supply shop with this information. A new bearing should be installed using the process above, in reverse. It is useful to make some simple drawings to assist in the reassembly.
Read more at Wikipedia.org
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