Altitiude

cswanson · Full Member Joined: Mar 28, 2007 Posts: 39 Location: KS

I'm from Kansas and I'm planning a trip thtough Colorado this summer. How will the altitude affect my bike?

FloridaBiker · New Member Joined: Mar 22, 2007 Posts: 2

You can figure a 30% power loss in the Rockies.

At 10,000 feet the air is approximately 30% less dense than sea level.
That has the same net effect as making your 650cc bike a 455cc equivalent.

Also your engine may need to be leaned out some.

xsjohn · Posted: March 29, 2007, 10:21 am Post subject: Re: Altitiude

I thought the cv carbs adjust for altitude. Maybe not enough for 10,000 feet. I notice slight changes when I go to the mountians here in NC and I think it's only 2000 feet or more above sea level. A 455cc bike in the mountains would be rough going especially if it's geared for highway.

I went through WY with a 6 cylinder Mustang and a trailer. It took forever 25 mph pedal to the metal. After a 4 hour pull up one mountain I stopped at the little bar for a beer. I asked the bartender whats up ahead. He said "just the two sisters". They may have been sisters but they were bitches also. Took me all day

John Underwood

cswanson · Full Member Joined: Mar 28, 2007 Posts: 39 Location: KS

How do I adjust to lean the mixture?

cswanson · Full Member Joined: Mar 28, 2007 Posts: 39 Location: KS

Does anyone have service manual that I could buy for less than $30? Also, I currently have K&N filters on. Would unipod type filters improve my intake?

Cafe_Shop · Posted: March 29, 2007, 6:01 pm Post subject: Re: Altitiude

K&N are more expensive for a reason... they're better.

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Yamaha xs650