My Ford Ranger ( 4 cylinder inline engine) calls for 5W-20 engine oil. The factory knows far better than I, but it just seems a bit thin to me. Is there any reason that this grade would be more desirable than, say, 10W-30?
Aluminum armor is used in some military vehicle applications where weight is an important consideration, such as applique armor packages. In fact, the basic vehicle structure of the Bradley and M113 APC's is aluminum.
Is there a narrow range of alloys suitable for this application, or is there...
www.defensepropulsion.com/avds-1790_-_1200_hp.html
I once heard that air-cooled diesels in a hot environment (i.e. desert) can have overheating problems. Id this perhaps overstated?
Since Cummins seems to be successful with their light-truck diesels (primarily in Dodge pickups), why didn't Caterpillar try to enter this market? Would it have entailed designing a suitable engine from scratch, or maybe an existing engine could have been adapted for this application?
Or is...
Gentlemen;
Pardon the arcane question, but I'd like to get input from the experts on this one:
http://uboat.net/fates/deadlight_news.htm
The article indicates (and I've heard) that steel manufactured after the atomic age began in July 1945 contains certain contaminates. These are evidently in...
www.cruffler.com/trivia-July00.html
Any comments on the heat treatment process described? Did it lend itself to inconsistencies any more than others of the period?
Well, it's certainly hard to beat their prices. The Ithaca 37 version has a machined steel receiver and steel trigger housing, and can be had for around $200 or so. Fit and finish appears to be well executed also. Machined parts (versus cast, MIM, etc.) in US production guns really send costs...
This is kind of a left-field question, but maybe someone is familiar:
The Chinese company Norinco has produced copies of various firearms that are exported to the US. Now, it's chiefly copies of the Remington 870, Winchester 97, and Ithaca 37 shotguns. While they're usually quite reasonably...
Most cartridge cases used by the US militarey today are made from brass, with some medium calibers (25mm, 30mm) using aluminum. Russia and most of the former East Bloc nations use steel. Steel would probably be a bit cheaper than brass, but is more susceptible to corrosion.
Since steel seems to...
Many types of military firearms have chrome-lined barrels. This (from my understanding) increases barrel life to some extent and makes cleaning a bit easier. It also protected the barrel better from the effects of corrosively-primed ammunition, although this is probably a non-issue nowadays.
Is...
I've got a question which is along the lines of trivia, but maybe someone can provide some input:
The military's M9 bayonet is made from 420 Stainless, while the older M7 bayonet is 1095 Carbon steel. What are the relative merits of each in this particular application, and would one be superior...
