Pepe: European riders brought
the sport to America.
FOREIGN-BORN AMERICAN RIDERS Dear MXA, I know that motocross wasn’t invented in America but was brought here by traveling foreigners. Who were the first European riders to come to America? The first European motocrossers in the USA were part of Edison Dye’s 1967 Inter-Am series, but they didn’t stay. The first significant European riders to move to America to race against the teenage Yanks were Lars Larsson, Peter Lamppu, Gunnar Lindstrom and Pierre Karsmakers.
Boot repair: Old soles can
become new again.
WRITE IT ON YOUR PALM Dear MXA, It wasn’t long ago that MXA listed all the companies that resole boots. My boots were fine then, so I threw the magazine away. Now my boots aren’t fine. Can you give me the numbers? Here are three good options: Sole Performance at (800) 944-2755 ( www.factoryresole.com), Pro-Boot at (800) 548-8354 ( www.pro-bootmx.com) or Alpinestars at (800) 727-8277 ( www.alpinestars.com). The typical cost to resole boots is around $100.
Mushrooms: You need a dark, dry
and cool place to store premix oil.
THE USABILITY OF OLD PREMIX OIL Dear MXA, I have some bottles of two- stroke oil that date back to the air-cooled days. Can I use them? No. As long as two-stroke oil has been kept in an unopened container in a cool, dry, dark place, it can last for many years— but not as many years as you have been hoarding the stuff. Once you open a bottle of two- stroke oil, you create an air pocket inside the bottle (where the oil you poured out used to be). This air pocket contains moisture (how much depends on the humidity on the day you opened it). Even though you put the cap back on, the moisture will contaminate the oil in about two months. Durability: Carbon fiber muffler cans have a very short lifespan. CARBON FIBER MUFFLERS Dear MXA, I want to get a carbon muffler for my CRF450, but I vividly remember MXA saying not to do it. Why? MXA advises against buying carbon fiber mufflers because they require a higher degree of care than metal cans. If you let the packing blow out, the carbon canister will either melt, crack or delaminate. How do we know? We’ve done it. If money is no object and you are conscientious about repacking your muffler, carbon might be worth the effort, but you can achieve the same weight savings with a titanium canister and save lots of money with an aluminum can—and both are more durable in the long run. Several companies, including DR.D, FMF and Pro Circuit, refuse to make carbon fiber mufflers because of the durability issues. Rubber baby buggy bumpers: The life of your shock’s seals depends on how thoroughly you clean the shock shaft behind its ears. SUSPENSION: MUD, SHOCKS AND HIDDEN GRIME Dear MXA, The rear shock on my KX450F was perfectly fine. Then, after I raced a mud race, it starting blowing oil out the next weekend. It rains where I live. Do I have to quit riding in the mud? No, you can keep riding on muddy days, because the problem is not the mud at the race; it is the mud after you get home. Although you may think that you are cleaning your bike carefully, you need to pry the shock’s rubber bumper down and clean the dried mud that has built up on the shaft under it. That old caked on mud, hidden behind the rubber bumper, is what is eating your seals.