So they should be called engine vehicles or engine cars? Not si. A motor is a "device which causes motion" and an engine is one type of motor.. So calling an engine driven vehicle a motor-vehicle is no more incorrect than 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 __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb --=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 .