good day could i impose upon the group for a question.

[Andrus Chesley]

--- In DSN_KLR650@yahoogroups.com, "Don Marr" wrote:

> > Mr. Aardvark > > I hate to disappoint you, but there are a couple of points here that

you are

> misinformed about.

Neat information and a very different view point. Thanks for sharing. '43 Andy in Jennings,La. < no altitude probems here '00 KLR650 '02 R1150GSA > For Sale '03 Chevy Truck

[Kimosabe]

As additional clarification, while the percentage of oxygen may not vary much with altitude, there is indeed less air and oxygen in any given volume. So, while you may be expanding your lungs, you still become short of oxygen at high altitudes. That's why oxygen masks and turbochargers are so helpful, differing in the manner of delivering more oxygen where needed. Legal disclaimer - I don't advocate using a turbocharger for your lungs, of course.

--- In DSN_KLR650@yahoogroups.com, "Don Marr" wrote: > > Mr. Aardvark > > I hate to disappoint you, but there are a couple of points here that you are > misinformed about. > > > > 1. There is not less oxygen (O2) in the air at higher altitudes. There is > approximately 20.9% O2 in the air at any altitude you are going to be able > to ride in (at ultra high altitudes with ultra cold temps you will see > differences due to some elements "freezing" out of the air. > > > > 2. The problem is less pressure to push the O2 molecules. At sea level > with standard temperature and pressure (STP) you have one atmosphere of > pressure, approximately 14.7 psi. At approximately 18,000 ft. you > have 0.5atmospheres, or about > 7.4 psi. (of course most of us will never be riding at 18,000 ft, but bear > with me) > > > > The correlation you made between breathing and carburetion is partially > accurate, but the reason has to do with the partial pressures of gasses and > how they react. In the body O2 is pushed through the cell membranes in a > process called diffusion. You must have a minimal amount of atmospheric > pressure to push the O2 molecules. If you do not have enough pressure then > you have to compensate by increasing the amount of O2 on the air. In > medicine we do this with supplemental O2 by giving a higher % of O2, in some > cases we can increase the pressure of the air that is being given, or both. > > > > This also correlates to out vehicles because we have to have four components > to burn the fuel we are putting into our bikes, fuel, O2, heat, and a > chemical reaction. Without a high enough pressure gradient we can not > sustain an efficient fire. As in the body we compensate by adding > supplemental oxygen, in our vehicles we do it by adjusting the fuel air > mixture. > > > > Another way to compensate is to turbo-charge the system. This is how > airplanes are able to fly at high altitudes. They boost the pressure to > much higher than normal pressures. In some of the WW II war planes the > boost was around 45 psi. If you know of a turbo for the KLR, please let the > list know. > > > > (I did not confirm the numbers stated above, so if I am off by a small > margin, please bear with me) > > Don Marr > KLR650 in Bahrain > K1100LT in Coos Bay, OR > > > > > On 7/21/06, Analog Aardvark wrote: > > > I was under the impression that CV carbs > > compensate > > > for altitude adjustments on their own...something > > to > > > do with the diaphram. > > I can't see how that would be... the diaphragm > responds to the amount of air rushing through the > venturi (the throat of the carb, so to speak) but it > has no way of knowing how much OXYGEN is in that air, > which is really what we're trying to adjust for when > we jet for altitude. In the same way you get "out of > breath" in Denver even though you're taking the same > number/size of breath, the KLR gets rich even though > it's sucking in the same rush of air because there's > less oxygen in that air. > > > [Non-text portions of this message have been removed] >

[Dail]

All constant velocity (CV) carburetors are designed to compensate for changes in altitude and barometric pressure. But even a slight modification to increase engine performance will require retuning of your CV carburetor. Quote from http://www.floheadworks.com/Products/keihin_carburetors.htm The CV carb is actually a better carb. Since it operates by air pressure the CV carb is better for temperature swings and going from one altitude to the next. Quote from http://www.battlescooter.com/6955/22520.html?*session*id*key*=*session*id*val* Found this on the internet so it must be true ; )

----- Original Message ----- From: jokerloco9@... To: doug@... ; DSN_klr650@yahoogroups.com Sent: Friday, July 21, 2006 3:04 PM Subject: Re: [DSN_KLR650] Re: Desert Jetting? Yes, CV carbs work regardless of altitude. People think they are acting up when they lose power at high altitude. That is normal, as less air, less power. Jeff A20 [Non-text portions of this message have been removed] ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.10.3/395 - Release Date: 7/21/2006 [Non-text portions of this message have been removed]

[Analog Aardvark]

Michael-- Your picture didn't come through. BUT... if you're talking about the long (6") black plastic cover just forward of the shock on the left side, the one that covers the starter solenoid. If I recall correctly it mounts over a tab at the top, and to a threaded hole on the the kickstand safety switch at the bottom. In stock form, there's a cable that runs from the end of the kickstand up to a little mechanical switch that prevents you from riding off with the kickstand down. They're notorious for failure, so most of us disable them. Once it's disabled, that switch is unnecessarry weight/hassle and some folks pull it off. If your bike is missing the kickstand cable and/or switch, that may be your problem. I drilled a small hole in the cover to line up with the threaded tab that remains when you remove that switch, and simply mount the plastic cover to it. I'm writing all of this from memory--mines been off a while--but I think it's true -Luke --- Michael White wrote:

> > > > > _____ > > > > I have been unable to locate neither in the Kawasaki > KLR parts fiche what > the screw is attached to on the Black plastic cover > to the left of the shock > in the picture, could anyone lend the information. > There is an attached > mounting bracket on the frame but it dose not align > up with the plastic > cover I ordered to replace the missing one on the > A12 I purchased. > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been > removed] > >

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