mrsmackpaul

So I'm correct that cavitation in pumps is a result of the discharge been greater than the capacity of the supply to the pump Paul

Well the mess is in full swing now Mrs Mack is up on blocks, wheels off, exhaust off, bull bar off Spent way way waaaay to much on parts Have a week off work, it isn't gunna be long enough My boys down from QLD and he is chief in charge of polishing the bull bar as I apparently can't polish to save myself I have lost a important part of new exhaust system I ordered years ago Spent hours searching for must have item that I have carelessly missplaced or as I would suggest, put some where for such safe keeping even I can't find it Lost a couple of days visiting a friend who is having a bit of bad issue with a brain tumor, thats a fair bastard of a thing Anyway some unexciting screen shots from a less even exciting video I might actually get to edit and finish one day The boy on his phone, porn hub no doubt shinner than my head on a hot day to quote my father, "your exhaust is exhausted Paul" And squashed And Mrs Mack up on blocks Paul

I guess the U.S. oil mighten need to have as much travelling through the Strait of Hormuz as Australian oil Things like this really effect Australia as a lot of our exports go through this shipping channel as do our imports The flow on effect can be quite dramatic But maybe it is a small price to pay to sort the mess out over there Apparently the up take of electric cars in Australia has sky rocketed since this layest bun fight began Who knows, not me, that's for sure Paul

Magic man, turned a big green truck into a stack of green money Good job

Thanks fellas, I think reason for the fuel hike is to pay for the next load of crude, not the stuff they already have And were else are we gunna go Thinking this bit of excitement in the middle east might want to be over soon otherwise your fearless leader might not be to popular with the people after 6 months of high prices Anyway, it still beats walking Paul

How's the fuel prices in the U.S. and Canada ? Fuel has gone through the roof in Australia $1.65 - $2.60ish in a week in Australia This is per litre price so multiply this by 4 for gallons Paul

So I think we are all sort of right and sort of wrong Cavitation of pumps, which is what I was talking about is different than cavitation in a Cummins around the liners That been said, I think we are all learning and that is what really matters Thanks for the thoughts Vlad Paul

Copied Vlads reply over to here Maybe it's not fine to flood up Larry's thread but seems I should toss a pair of nikels to this basket. Paul's explanations were wrong (or maybe we are both wrong with him as he clever addmits sometimes). The effect of cavitation is predicted by taking the fluid body apart. It's possible if you "pull one end" and "hold the other". For example in a centrifugal pump some portion of fluid is forsed to go to the outside due to spinning but the incoming fluid is hold down because of excessive resistance in the suction channel. Or similar effect can be achieved on a surface of impeller blades. Big impellers have section of blades made by the same principal as a plane wing. That "assymetrical ellipse" shape produces difference of pressures on different sides of the wing. More curved side gets lower pressure what helps getting the plane up. And same effect is used in leaned (not straight) boat sales. Ok, that's a rocket since but the point we deal regarding cavitation is fluid is broken down in a certain point. So a bubble occures there. That's not gas in fact. It's vaccuum. It could be gas filled to some minor grade because of intensive evaporation to the vacuumated volume but what has meaning is that volume is under notably lower pressure than the whole fluid body. When that bubble moves from the area with conditions which produced it to area with normal conditions normal pressure in the fluid presses it down immediately. And as long as fluid doesn't compress as gas it produces big hit in that spot. It's pressure wave spreads over surrounding fluid and since fluid is super-conductive for stress it achive structural parts of the device. During cavitation we have a kind of "hammering" to empeller blades, pump housing or a cylinder sleeve (here the effect is stimulated by pressure jumps in the combustion chamber if combustion isn't going right, for example being detonative). Ok, constant hitting to a structural element makes material brittle which is followed by chipping out and making cavits. This way general reason for cavitation to take place is incorrect movement of fluid in a certain passage. For centrifugal pumps the most typical reason to cavitate is higher revs than they are designed for. And clogged suction side too or sucking from very low level.

I like sweet potato chips, we don't call them fries out here Even chips outta carrots are okay Paul

Your hard on your toys Joey Struth, your tougher than a Tonka, wonder if thats like Chuck Norris type of tough Paul

Never seen anyone use cables for brace, steel pipe yes, flat strap yes, angle iron yes But guessing cable will work okay But yes a big X brace doohickie across the rear opening Dunno about your pins in the ground, thinking some cement footings to anchor the walls to the ground Maybe 2 feet square and 2 feet deep, it's a fairly big sail area to catch wind I know of people that have driven car axles into the ground on cattle crushes and a big bull will pull them out when in the crush so the pins best be in the ground a few feet if it's gunna stop the carport getting airborne No matter what you do your gunna struggle a bit as the frame of the car port is only sitting on the fround, not extending into footings in the ground So think about a fence post that has a flange bolted onto it and bolted to cement, everything is realing on the flange and a few bolts However if the post was 2 feet longer and buried in a hole the strength of the post stops the movement So maybe bolt some long posts fixed to each corner of the carport and bury these posts in holes 2 feet deep filled with cement Paul

Tiz a bugger getting old and technology beating us ha ha Lots of braces needed to stop movement Paul

Dunno, can't see no photos here to add comments to Paul

And there is lots of things to learn about on threads like this I had no idea about the events unfolding in Iran until I read about it on here I haven't watched news or current affairs programs since 2007 and the GFC or Sub Prime mortgage crisis in the U.S. And life just ticks along even better for me and I stay all types of calm and happy because of it Paul

I say to people "I could agree with you, but then we both would be wrong" ha ha ha Paul