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2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #31 of 61 Old 09-19-2019, 09:52 PM
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All I can say is that it's a dang good thing that we didn't use the metric system to send a man to the moon. Look what happened with the Mars Climate Orbiter. Those guys would be out of the solar system by now. Either that or a new crater on the moon...

Only in the metric system could Newton disguise himself by drawing a square meter box on the ground and standing in it. He'd look just like Pascal.

Our system of torque is screwed up due to colloquial misuse of terms. We say pound-feet and foot-pounds interchangeably but it really should be pound-force-feet. It is intuitive, though, as it is essentially the force that gravity exerts on one pound of mass at a lever at a point of one foot from a pivot. Easy to understand.

What the jump the **** up and down is a Newton-meter, though? A Newton is a force that accelerates a kilogram at one meter per second. Heh? You stick that out on the end of a one-meter lever and you've got some torque. It's completely non-intuitive.

Now, if'n a Newton was whatever Isaac massed, say 80Kg, and given an acceleration equal to gravity at 9.8 m/s that might make some sense. We could wrap our head around that, as a N-m would be something like 175 pounds sitting at the end of a threeish foot lever. That's like 60ish ft-lbs. But less than a quarter ft-lb? Nah, it will never fly.

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

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post #32 of 61 Old 09-19-2019, 10:17 PM
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I don't have a problem with the 'metric system'. I have a problem with 'too coarse' of measurements & 'rounding' of measurement tools.

Then owners whine and whimper about "tick, tick, tick" from their valve train!

When in doubt about valve train tappet clearnace I'll suggest that it is best to error on the snug side of things. (At least if one is aiming for the wide side of specs.) For longest interval between checks & adjustments.
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post #33 of 61 Old 09-20-2019, 09:28 AM Thread Starter
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Holy s***! Tom, you made those videos? I watched those when I initially pulled my carburetor off when I unmothballed my bike. They were invaluable. Very well done.

I followed them pretty closely, but I'm going to pull the carburetor again today and check the usual suspects. I've got nothing to do until the valve shims arrive anyway.
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post #34 of 61 Old 09-20-2019, 11:49 AM
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Originally Posted by Tom Schmitz View Post
All I can say is that it's a dang good thing that we didn't use the metric system to send a man to the moon. Look what happened with the Mars Climate Orbiter. Those guys would be out of the solar system by now. Either that or a new crater on the moon...

Only in the metric system could Newton disguise himself by drawing a square meter box on the ground and standing in it. He'd look just like Pascal.

Our system of torque is screwed up due to colloquial misuse of terms. We say pound-feet and foot-pounds interchangeably but it really should be pound-force-feet. It is intuitive, though, as it is essentially the force that gravity exerts on one pound of mass at a lever at a point of one foot from a pivot. Easy to understand.

What the jump the **** up and down is a Newton-meter, though? A Newton is a force that accelerates a kilogram at one meter per second. Heh? You stick that out on the end of a one-meter lever and you've got some torque. It's completely non-intuitive.

Now, if'n a Newton was whatever Isaac massed, say 80Kg, and given an acceleration equal to gravity at 9.8 m/s that might make some sense. We could wrap our head around that, as a N-m would be something like 175 pounds sitting at the end of a threeish foot lever. That's like 60ish ft-lbs. But less than a quarter ft-lb? Nah, it will never fly.
Confining the post to discussing measurement of length (never mind mass, force, torque, "weight," etc.):

Who but the FRENCH could come up with an idea for the "meter" (or, "metre"), with a nonsensical idea such as this (as WikipediA tells us):

-------------------------------

. . . the commission whose members included Lagrange, Laplace, Monge and Condorcet decided that the new measure should be equal to one ten-millionth of the distance from the North Pole to the Equator (the quadrant of the Earth's circumference), measured along the meridian passing through Paris.

-----------------------------

Flaws include . . . the earth ain't exactly ROUND; rather, the geometric solid remains an OBLATE spheroid . . . thus, meridian length doesn't conform to earth surface latitude angle consistently from pole to pole; the French at the time measured only ground distance. And, wouldn't you know, they chose the meridian passing through PARIS, not GREENWICH!

How DARE they subsume our sacred English system of length measurement, obscenely trashing (for a questionable global presumption) the sacred inch, foot, yard, mile, chain, furlong, hand, rod/pole/perch, I could go on!

Without the furlong, how does one know the length of a horse race? Without the hand, how can a horse's height be specified?

Oh, the French (and other Europeans) went ON. In modern terms, they defined the meter as (ibid.):


-------------------------------------

The metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299792458 when expressed in the unit m⋅s−1, where the second is defined in terms of the caesium frequency ΔνCs.

-------------------------------------

Now, I ask you: How many of us posses instrumentation capable of measuring the speed of light (in a vacuum, no less) in our garages/shops?

With the English system, ordinary objects determine units of length. For example, three barleycorns, end to end, occupy a distance of one inch in length. A foot? I don't have to tell you. A yard? Distance from one's nose to the middle finger of an outstretched arm and hand.

Not only does the Metric System Conspiracy trash the ENGLISH units of measurement, for those living in Texas, forget the Vara:

-------------------------------------------

Vara: a Texas unit of length equal to 33.33 inches (84.66 centimeters).

------------------------------------------

Even today, former Spanish/Mexican acreage in Texas is described in varas, in official courthouse land records.

Obviously, we must RESIST the Metric System Conspiracy! Do not speak, write, or type in the metric syntax; instead, use our beloved English system.

(It's o.k. to use the Biblical "cubit," the distance from one's elbow to the extended hand's middle finger.)

Now, where are my WHITWORTH wrenches??????????????

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You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, youre gonna be dead. "John Russell" (Paul Newman), Hombre
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post #35 of 61 Old 09-20-2019, 12:23 PM Thread Starter
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If I'd known you were such a traditionalist, Damocles, I would have specified that my exhaust valve clearances were 0.0015 Indian Jow, or 0.026445 of an Aṅgula. These measurements (probably) going all the way back to the Harappan Civilization in the Indus Valley (circa 3300 BCE to 1300 BCE) would supersede the other more "modern" systems you mentioned.

Barleycorns? Cubits? Keep your new-fangled high-falutin' fancy-pants measurements! If it was good enough for the creators of the good ol' Proto-Indo-European language, it's good enough for me!
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post #36 of 61 Old 09-20-2019, 01:49 PM
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Oh no! Let us not besmirch the barleycorn! It is so handy to keep three of them in your pocket and, from there, you have the basis for the entire SAE system of length. And everyone has a cubit already attached and it is a foot and a half, half a yard, or 54 barleycorns. Just an awesome unit.

Everyone has a yard, too, but a meter is 9% out of reach just beyond your fingertips!

Have you tried to keep a meter in your pocket? Even a paper meter from Ikea is a bit bulky. Not so with barleycorns.

In a pinch, they are quite tasty, too.

@Skook, yes, I made the videos. Glad you found them of some use. Due to my monotonic, rambling vocal style, I have been compared to Bob Ross.

He's dead, you know.

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
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post #37 of 61 Old 09-20-2019, 05:38 PM Thread Starter
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Okay, everything you say might be true, but I don't think I have to point out to you that depending on the cultivar the average length of a barleycorn can vary between a mere 4 mm to a whopping 15 mm. However, we can assume that it wouldn't be impossible to obtain a few grains of "bere" barley, currently one of the most ancient cultivars still in production (in Orkney, Scotland) which has an average length of 8.8 mm (that would be 69/200" for you pdwestman).

Meaning of course the the valve clearance specs for a 2008 klr are 0.018 to 0.03 barleycorns for the exhaust, and 0.012 to 0.024 barleycorns for the intake.

I guess I'll be reinscribing the leaves on my feeler gauge tonight.

Apparently barleycorns are still in common usage for shoe size in English speaking countries. 12 inches is considered the largest shoe size and it counts up and down in barleycorns from there. That's a statement, not a fact.

I assume the comparison with was with pre-mortem Bob Ross. I remember finding your voice very calming, which is what you want when you are opening up a carburetor for the first time. It made me feel like "Hey, it's okay, if this guy can do it I can too".
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post #38 of 61 Old 09-20-2019, 06:36 PM
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Quote:
Originally Posted by Tom Schmitz View Post
Our system of torque is screwed up due to colloquial misuse of terms. We say pound-feet and foot-pounds interchangeably but it really should be pound-force-feet. It is intuitive, though, as it is essentially the force that gravity exerts on one pound of mass at a lever at a point of one foot from a pivot. Easy to understand.
Yes, and 1 slug = 32.2 lbs = 14.6 kg

Jason
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post #39 of 61 Old 09-20-2019, 06:45 PM
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@Skook, "I think you're going to fit in around here", Tom inserted.

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
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post #40 of 61 Old 09-20-2019, 06:46 PM
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I like the slug. It's useful in the same way that the stone is.

It's nice to weigh only 6 slugs.

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
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