In Portuguese there is just the word "motor", for any kind of motor or engine. On 22/11/2014 17:04, David C Brown wrote: > So they should be called engine vehicles or engine cars? Not si. A moto= r > is a "device which causes motion" and an engine is one type of motor.. S= o > calling an engine driven vehicle a motor-vehicle is no more incorrect tha= n > referring to diesel oil or LPG as fuel. > > On 22 November 2014 at 17:44, Richard R. Pope > wrote: > >> Justin, >> That is correct. Even though we call them freeze plugs they were >> never designed to protect the engine and usually they don't. Most of the >> time if the coolant freezes it will break the radiator if you are >> fortunate. If not it deforms or even cracks the cylinder walls. >> We have a lot of bad information floating around in the states >> about cars and motorcycles. Like calling them motorcycles. They are for >> the most part engine cycles but that is kind of awkward to say. The >> prime mover in most cars is an engine, not a motor but supposed >> knowledgeable people still call them motors. True there are now cars >> with motors in them either as a hybrid setup or even as the only driving >> force. We even call it motor oil and yes it can be used to lubricate >> motors but for the most part it is used in engines. >> And then there is the one about if you set a battery down on a >> concrete floor it will ruin the battery. This is not true. It used to be >> when the batteries were made with wood cases. >> Or if you leave the thermostat out the engine will run hot because >> the coolant is going too fast to pick up the heat. This violates one of >> the laws of thermodynamics and I don't remember which one. The reason it >> runs hot is because most cooling systems have a bypass hole so that >> coolant will circulate through the engine when the thermostat is closed. >> If the thermostat isn't there hot coolant is being directed right back >> into the engine without going through the radiator. On some engines the >> hole was only about a quarter of an inch in diameter. In some engines >> the hole could be close to two inches. That is a lot of coolant that >> never makes it to the radiator. >> Then there is the worst one of all. A person has a small leak >> somewhere and they believe that as long as they keep the cooling system >> full everything will be OK! NOT so. This will cause bubbles of air to >> form in different parts of the engine and in passages in the cooling >> system. These air pockets act as insulation and they will cause local >> over heating. These hot spots will not show up on the temperature gauge >> but the damage is being done. Also the pockets of air can interfere with >> the circulation of the coolant and this will cause general overheating. >> Also with a sealed system the pressurization of the system can't take >> place which raises the boiling of point of the coolant. The final damage >> is the pockets of air cause cavitation and allow oxygen in to the system >> which causes corrosion. >> So there is a lot of bad info out there. But it is fun to listen to >> and then just stand there and shake your head at. :) >> Thanks, >> rich! >> P.S. I just learned something new. There is a strong drive on to try and >> switch over to a hydrogen based system. Well hydrogen is the smallest of >> all molecules and it is almost impossible to build a container that >> doesn't leak. It is also the lightest and least dense of all molecules. >> So as you increase the pressure to try and put more and more hydrogen in >> to a container which directly affects range the storage problem becomes >> even more difficult. >> So here is a scenario to think about. Whoever fills their tank up >> and parks at the airport in a semi-enclosed parking structure The >> vehicle is sitting there with the hydrogen slowly leaking out of the >> tank. The best case scenario is this person gets backs after a couple of >> weeks and the tank is empty. The worst scenario is that someone is >> walking by the car and pulls out a match to light a cigarette. The >> parking garage ends up in the adjoining counties. Just something to >> thing about. >> Thanks, >> rich! >> >> On 11/22/2014 2:51 AM, Justin Richards wrote: >>> Thanks rich, >>> >>> I can imagine from your explaination that there's many stories of peopl= e >>> driving of without unplugging first. >>> >>> And wrt the plugs I take it from the description it is what I know as a >>> welch or core plug that are used to plug the holes that the moulding sa= nd >>> is poured out of. >>> >>> Cheers Justin >>> >>>> There is another type that is inserted in to the engine block in >>>> place of what we Americans call a freeze plug. I believe you folks cal= l >>>> it a soft plug. Again you plug it in at night and it will keep the >>>> coolant at about freezing in 30 or 40 degree f below zero temperatures= .. >>>> >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .