Itinerant Air-Cooled

Amskeptic wrote: "THANK-you. You know, I have never had a HAND JOB before . . . "

Chloe's cylinder head spigots on the other hand…

Amskeptic wrote:

wcfvw69 wrote:[At that price for them, they should of come w/a coupon for free hand job from a local massage place.

Oh, I'm sorry, I forgot to mention that they did come with a coupon for a free hand job from a local massage parlor.
"You customa fwum Woofsbug West?"
"Why YES, YES I AM. Where do we start?"
"Go down haw, make wight."
"THANK-you. You know, I have never had a HAND JOB before . . . "
"I not announce that if I you."
ColinInKansas

LMAO!!
https://www.youtube.com/watch?v=JEEWE7gcPw0

Aluminum and magnesium develop a protective surface patina, but iron will flake off one layer at a time

Colin I was an industrial designer in a past life, I can attest by experience. All of the cast iron gearbox housings were left in the elements to season on purpose. I was assured by engineers that it was part of the process. It does not flake through the exterior steel or iron once it has been seasoned properly. The same is true for steel, look at RR tracks they aren't painted but the sides do rust. Granted nothing lasts forever.

Machinery's Handbook
https://books.google.com/books?id=G7S2B ... ry&f=false

1920 Machinery
https://books.google.com/books?id=fc87A ... ry&f=false

http://www.practicalmachinist.com/vb/ge ... ron-87355/

Amskeptic wrote:Drove 328 miles further into the I-80 traverse of the Rockies, which is actually very gradual....

It is gradual indeed; one of the most interesting geological stories in North America and the highway's there because of it.
"On the east flank of the Laramie Range is a piece of ground that somehow escaped exhumation. Actually contiguous with Miocene remains that extend far into Nebraska, it is the only place between Mexico and Canada where the surface that covered the mountains still reaches up to a summit. To the north and south of it, excavation has been deep and wide, and the mountain front is of formidable demeanor. Yet this one piece of the Great Plains--extremely narrow but still intact--extends like a finger and, as ever, touches the mountain core: the pink deroofed Precambrian granite, the top of the range. At this place, as nowhere else, you can step off the Great Plains directly onto a Rocky Mountain summit. It is known to geologists as the gangplank."
John McPhee, Rising from the Plains

Amskeptic wrote:No big firs and craggy peaks, why it looks (and felt br-r-r-r) like it is about a month after the retreat the of the glaciers.

I'm not positive but I think that part of Wyoming escaped glaciation during the Pinedale/Fraser era; wind is the principal sculptor there (as anyone who's driven I-80 through The Equality State should have no trouble believing).

Amskeptic wrote:I was advised that I had crested the Continental Divide more than once.

Wyoming has the only two holes in the [ahem] Great Divide, of which I'm aware. Such holes are of two possible types: one, where water drains to neither the Atlantic nor Pacific--the Great Divide Basin, which you entered outside of Rawlins and exited around Table Rock; two, where water drains to either the Atlantic or Pacific--a little stream in the wilderness South of Yellowstone which splits into two upon encountering an otherwise nondescript ridge, a nondescript ridge which happens to demarcate the Great Divide.

</pedantry>

hambone wrote:

Aluminum and magnesium develop a protective surface patina, but iron will flake off one layer at a time

Colin I was an industrial designer in a past life, I can attest by experience. All of the cast iron gearbox housings were left in the elements to season on purpose. I was assured by engineers that it was part of the process. It does not flake through the exterior steel or iron once it has been seasoned properly. The same is true for steel, look at RR tracks they aren't painted but the sides do rust. Granted nothing lasts forever.

Maybe we are cross-talking or sumpin.

Seasoning/stress-relieving I am fully familiar with, especially in engine rebuilding. It is primarily the cyclical expansion/contraction of temperature changes that relieves stress in complex castings that will have extremely precise machining operations. Letting the thing rust is not a goal, it is a consequence.

Railroad tracks are steel which do not rust like grey iron. Stainless steel exhaust systems, torsion bars, high-grade steel, won't flake off in chunks. Railroad tracks will never flake off in gobs like I have seen with cast iron cylinder blocks and over-cooked northeast ventilated brake disks and Ford differential housings and old VW rear brake drums. You lived in Chicago. Did you ever replace brake disks there? Holy.
Colin

I am talking about leaving cast iron to rust, as it won't harm the part. Road salts etc. are a different matter.

On cast iron the patina is iron oxide ( to the chemist it's iron oxide to the rest of us it's just rust). Cast iron rusts extremely quickly. In fact cast iron will begin to rust when the relative humidity exceeds about 64%! Unlike steel, however, the rust on cast iron is not invasive but will act like a coating to prevent deep rusting. Therefore rusting on cast iron gratings in no way harms their structural integrity. The patination of cast iron grates goes through a predictable set of stages. The duration of each stage depends on local moisture conditions and the amount of foot traffic. So grates will progress slower in the desert than at the beach but the process is inevitable regardless of location.

http://www.ironsmith.cc/patina.htm

whc03grady wrote:It is gradual indeed; one of the most interesting geological stories in North America

Indeed it was. Imagine stepping off the prairie onto a mountaintop.

I love geography. Thanks for reminding me.

whc03grady wrote:

Amskeptic wrote:Drove 328 miles further into the I-80 traverse of the Rockies, which is actually very gradual....

It is gradual indeed; one of the most interesting geological stories in North America and the highway's there because of it.
"On the east flank of the Laramie Range is a piece of ground that somehow escaped exhumation. Actually contiguous with Miocene remains that extend far into Nebraska, it is the only place between Mexico and Canada where the surface that covered the mountains still reaches up to a summit. To the north and south of it, excavation has been deep and wide, and the mountain front is of formidable demeanor. Yet this one piece of the Great Plains--extremely narrow but still intact--extends like a finger and, as ever, touches the mountain core: the pink deroofed Precambrian granite, the top of the range. At this place, as nowhere else, you can step off the Great Plains directly onto a Rocky Mountain summit. It is known to geologists as the gangplank."
John McPhee, Rising from the Plains

Amskeptic wrote:No big firs and craggy peaks, why it looks (and felt br-r-r-r) like it is about a month after the retreat the of the glaciers.

I'm not positive but I think that part of Wyoming escaped glaciation during the Pinedale/Fraser era; wind is the principal sculptor there (as anyone who's driven I-80 through The Equality State should have no trouble believing).

Amskeptic wrote:I was advised that I had crested the Continental Divide more than once.

Wyoming has the only two holes in the [ahem] Great Divide, of which I'm aware. Such holes are of two possible types: one, where water drains to neither the Atlantic nor Pacific--the Great Divide Basin, which you entered outside of Rawlins and exited around Table Rock; two, where water drains to either the Atlantic or Pacific--a little stream in the wilderness South of Yellowstone which splits into two upon encountering an otherwise nondescript ridge, a nondescript ridge which happens to demarcate the Great Divide.

</pedantry>

Yay, a fellow geonerd!
Gawd I love it when you talk orogenic to me.

Small world: The wife of one of us Los Alamos bus owners just got elected/appointed to Vice-President of the Geological Society of America! Rocks and buses...

whc03grady wrote: </pedantry>

I love that stuff. Thank-you.
Colin