More oil on the Fire - Honda Rebel Forum
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post #1 of 8 Old 03-14-2019, 12:44 PM Thread Starter
 
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More oil on the Fire

I found this on youtube and thought y'all would find it interesting.

2009 Honda Rebel 250; 2009 Honda Shadow 750 Spirit
"The bravest thing for me to do is admit when I am wrong" - unknown
HRF Answer #1 You should take the MSF Rider Course
HRF Answer #2 You need to clean your carburetor
HRF Answer #3 Sorry we assumed if you didn't say otherwise
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post #2 of 8 Old 03-14-2019, 05:49 PM
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It's no myth that I like my truck nice and warm before I start driving around. The downside for me is my mileage dips down to 6 mpg due to idling and plowing in the winter.

1985 Rebel 250 ... 2005 Ruckus 50
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post #3 of 8 Old 03-14-2019, 07:16 PM
 
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many automobile carburetors had heat control of sorts to improve atomization.. block coolant base heaters, thermostat controlled vacuum doors directing heated air drawn across hot exhaust manifold into intake..

without these devices carb icing can also occur. happens most in light aircraft and a mini PU owned so long ago forgot who made it.. fk I'm getting old..........

96 VS800 Intruder (sold 2018 ), 87 CMX250C Rebel,
79 CB400 Hawk (sold 93), 75 CB350 (sold 83), 71 CB350 (stolen 74)
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post #4 of 8 Old 03-15-2019, 03:14 PM
 
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IMO, ABSOLUTELY. Warm up ANY engine before putting a load on it. Car, bike, airplane, lawnmower, whatever. It's important on any engine, but critical on aluminum engines. Cold aluminum is weak, it wears and breaks much easier when cold. It needs to be warmed up slowly, with as little stress as possible on it. Aluminum expands quite a bit as it warms up, and warming it up too quickly (like putting a load on it) can cause thermal cracking. There is also the matter of clearances. Engines are designed to have correct internal clearances at operating temperature. The clearances will be incorrect when cold. Many people say you should take off immediately, but ride very slowly for a while. This can work, especially if the ambient temperature is fairly high. I have done it in cars, by driving around the neighborhood at 10 mph for half a mile or so. But not on a bike. When I put that bike in gear and take off, I want it warm enough to be able to whack the throttle wide open if necessary. It is also more critical to warm an air cooled engine up slowly, because they tend to warm up faster than liquid cooled engines, and have a greater difference in clearances than liquid cooled engines. It doesn't take long to warm up an air cooled engine in normal temperatures. Let it idle for 5 minutes and it is pretty much warmed up. My Sportster has an oil temp gauge, and I let it idle till it reaches 100 degrees before taking off. Also, on a carbureted engine, turn the choke off just as soon as it will run without it. You want the leanest mixture possible during warmup, because a rich mixture can wash the oil off the cylinder walls.

Modern engines typically have such a long lifespan that people don't notice the damage they are doing by not warming up the engine before taking off. John Muir, an engineer who wrote the Volkswagen Idiot Book, claimed that not warming up an engine before taking off would reduce it's life by about 30%. Most people never put enough miles on motorcycle engines for that to ever show up, so they never see the results of not warming up their engine. The same thing can apply to not changing their oil often enough. They get rid of the vehicle before the damage shows up, leaving the next owner to deal with it.

For those who wear a lot of gear, just start the bike, then put on all your gear, and by the bike should be ready to go.
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post #5 of 8 Old 03-15-2019, 09:07 PM
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And here's more from this site: https://www.yahoo.com/news/bp/8-fact...201000465.html

1. Driving Warms the Car Faster than Idling.
If your concern is not the health of the car, but simply your own creature comforts, Bob Aldrich of the California Energy Commission points out that "idling is not actually an effective way to warm up a car - it warms up faster if you just drive it." ...

2. Ten Seconds Is All You Need.
Environmental Defense Fund, which produced the Idling Gets You Nowhere campaign, advises motorists to turn off their ignition if they're sitting stopped for more than 10 seconds. "After about ten seconds, you waste more money running the engine than restarting it, said Andy Darrell, deputy director of the EDF Energy Program. "Switch the car off at the curb and you'll be leaving money in your wallet and protecting the air in your community."

3. Idling Hurts the Car.
According to the Hinkle Charitable Foundation's Anti-Idling Primer, idling forces an engine "to operate in a very inefficient and gasoline-rich mode that, over time, can degrade the engine's performance and reduce mileage."

4. Idling Costs Money.
Over a year of five minutes of daily idling (which causes incomplete combustion of fuel), the "Anti-Idling Primer" estimates that the operator of a V-8-engined car will waste 20 gallons of gasoline, which not only produces 440 pounds of carbon dioxide but costs at least $60.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
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post #6 of 8 Old 03-17-2019, 05:08 PM
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My commute is less than 10 minutes. I'm concerned about driving an insufficient distance to achieve normal operating temp so I let it idle in the driveway for 30 minutes to warm it up. It's not just about my comfort but also being able to burn off condensation inside the crankcase.

1985 Rebel 250 ... 2005 Ruckus 50
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post #7 of 8 Old 03-18-2019, 11:06 AM Thread Starter
 
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There's actually and Anti-Idle Campaign?

2009 Honda Rebel 250; 2009 Honda Shadow 750 Spirit
"The bravest thing for me to do is admit when I am wrong" - unknown
HRF Answer #1 You should take the MSF Rider Course
HRF Answer #2 You need to clean your carburetor
HRF Answer #3 Sorry we assumed if you didn't say otherwise
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post #8 of 8 Old 03-18-2019, 01:37 PM
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some munis have ordinances against idling

1985 Rebel 250 ... 2005 Ruckus 50
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