black river stages - rallymoto event in upstate ny this weekend

[Craig Kahler]

I don't get it. Why are motorcycle carburetors so much trouble. I have owned carburated cars in the past which needed very little carb work. I have a 10 year old Craftsman lawn mower. At the end of the mowing season I store it out side under the deck, never drain the gas, and in the spring it starts right up. Craig Kahler [Non-text portions of this message have been removed]

[Jeff Khoury]

In my opinion: In the old days of carbureted cars, gasoline was... well, gasoline. No one worried about hydrocarbon emissions. Nowadays the EPA and your local jurisdiction mandate specific formulations including tons of additives that are NOT gasoline and do not vaporize like gasoline. This is not a problem when it is sprayed high-pressure through a closed system (fuel injection) but does matter when it is sucked through tiny holes by intake vacuum and allowed to sit in small quantities open to the atmosphere. Modern gasoline is formulated for fuel injected cars, not carbureted motorcycles. In addition, jets on automobile carbs are many times larger than the ones on motorcycles, so it is less of a concern when there are deposits. The pilots on MC carbs are very, very tiny, and a lot of the time, the surface tension of gasoline is enough to bridge the hole. As this evaporates, each time it leaves a little more deposit until this tiny hole is plugged by the residue left behind. This happens faster when the jet is left submerged. Small engine carbs are MUCH simpler than MC carbs. Since they require less modulation (throttle response) and if they stumble or cut out, they're less likely to kill you, they are essentially a controlled fuel leak. Believe it or not, the jets are typically bigger on your lawnmower. The best thing to do is prevent this by riding it frequently, or draining it if it's going to sit. It is so much easier to prevent the problem than it is to fix it once it is there. -Jeff Khoury

----- Original Message ----- From: "Craig Kahler" To: "dsn klr650" dsn_klr650@yahoogroups.com> Sent: Tuesday, September 15, 2009 3:32:23 PM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Carburator Problems I don't get it. Why are motorcycle carburetors so much trouble. I have owned carburated cars in the past which needed very little carb work. I have a 10 year old Craftsman lawn mower. At the end of the mowing season I store it out side under the deck, never drain the gas, and in the spring it starts right up. Craig Kahler [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]

[spike55_bmw]

If you think motorcycle carbs are a problem, you ought to see boats with two-stoke motors. You'd be payin' the man every year to clean out the carb if you were like most boat owners: run the boat on Memorial Day weekend, run it three more times during the summer, run it Labor Day weekend, and then leave it sit over winter with fuel in the carb / tank, cylinders open to the atmosphere so condensate can form, battery(s) still hooked up sitting in the boat. Oh yea, water in the trailer's tail lights and wheel bearings. You can make a living off of a few less conscientous boat owners. Don R100, A6F

--- In DSN_KLR650@yahoogroups.com, Craig Kahler wrote: > > I don't get it. Why are motorcycle carburetors so much trouble. I have owned carburated cars in the past which needed very little carb work. I have a 10 year old Craftsman lawn mower. At the end of the mowing season I store it out side under the deck, never drain the gas, and in the spring it starts right up. > > Craig Kahler > > > > > [Non-text portions of this message have been removed] >

[guymanbro]

--- In DSN_KLR650@yahoogroups.com, "guymanbro" wrote:

> > Anyone going, as a competitor, spectator or volunteer? I am volunteering this year in the hopes I can race it next year. > > da Vermonster > > http://blackriverstages.com/2009/index.php >

Forgot to mention I'm riding my KLR to the event. THERE. Now I don't have get flamed for not having NKLR in the subjext line.