Very often, stiffness of a suspension member is an important attribute as well as strength. Therefore a larger section of lower strength steel may perform better, be cheaper, easier to fabricate and more tolerant to damage and fatigue.
There's more to it than working out forces and...
By my reckoning, if one side is 70 nanometres longer than the other, it falls over. That's some serious machining (but not impossible). How flat is the surface table you're measuring it on? You probably need an optical flat to test this. Good luck!
Energy density of hydrocarbon fuels (diesel, petrol, kerosene) is hugely superior to any currently viable battery technology, compressed gas, or hydrogen fuel.
A sensible mass or volume of diesel (ie a tankful) will get you 1000 km in most cars. And it takes 5 minutes to refill for another...
I have come across a wheel-retaining device in UK called a 'Wobble bolt' or 'Collar bolt'. It is a wheel bolt designed to accommodate a difference between a wheel PCD and a hub PCD. It is a bolt with a floating collar which can align itself eccentrically to the bolt axis by a millimetre or two...
At a mu of .005, a 100-ton locomotive will achieve a drawbar pull of 1000 lbf. That's not much of a train.
The loco won't even make it up a 0.5% grade on its own, let alone pull anything else up it.
Something wrong here. Civilperson's numbers look more realistic, although I've never come across...
What hydromech states is certainly true for the United States of America. However, there are well over 100 other countries in the world, and in these, different standards may apply, some based on SAE, ASME, DIN or ISO, some not. While a significant part of the world's industry is US-based, it's...
The engine - any engine - should work perfectly at any oil level between the minimum and maximum marks on the dipstick. The practice of using the minimum mark and adding '20 to 40 litres' doesn't seem to be an irresponsible act (unless that over-fills it).
The minimum mark (asuming it's a...
NickE says: "Imagine a car that can accelerate as fast as an F1 car, on dirt, snow, and tarmac."
Sorry - no I can't. Not if propulsive forces go through tyres anyway. Rubber on snow just won't do it, however much traction control you've got.
j2bprometheus - I think you're being a bit optimistic about engine weights. The fundamentals weigh the same but medium-sized marinised diesels are typically 10% to 20% heavier than the automotive version (even higher percentage on smaller engines). This is due to:
Engine cooling is generally...
Please don't advocate using hydrofluoric acid, whatever the glass really is. This stuff is bad enough in the lab, but on an industrial scale it's evil. This shaft is 14 foot long and weighs over 1/2 a ton. That's some bath, cockroach! You'll have gallons of HF slurping around, with fumes and...
What I'm suggesting is that if you're in the industry you should (eventually) get the opportunity as a civilian to attend / observe / participate in military exercises, or at least tests and trials. Don't expect this in the first week, though.
As for suggestions for getting in to the industry...
An M2 hole is pretty small. Controlling depth of full thread to 2mm is asking for trouble (de-burr the hole and you've lost 25% of your thread). In a soft aluminium alloy you won't be able to inspect or measure it effectively. Maybe if it's screwing on a maker's nameplate it would be OK but I...
What is the 'glass coat'? The exact meaning may have been lost in translation. It could be mill scale (which is fused ceramic - ie glass)if the shaft has come straight from the mill.
If so, impact with an air powered needle descaler is the normal way to clean it up.
