One of my rules of thumb, for what it's worth; if the thing (engine, cable box, etc.) changes its behavior, for the better or worse, right after you touch something, that something is a likely suspect. In this case, since NEW plugs fix it for 500 hours. Then either the wrong heat range or a...
A couple of stories. Some of the early Ski-Doos had very little timing advance and were pull start, with the rope breaking about once a season. Some owners wound the rope backwards and the engines would readily and unknown to the owner start in reverse and back into any inconvenient object...
US Navy prohibits anything in excess of 30 volts where it could be touched, such as a broken/cracked pushbutton or changing a broken light bulb. The theory is that the human body resistance can drop as low as 300 ohms; tired, out of shape, sweaty, and 30 volts could result in 0.1 amps of...
Sounds suspicious to me. Cars have been running 205 degree thermostats and 5000 mile oil changes for years. I find it hard to believe that 5 degrees and 1000 miles goes over the cliff.
Hopefully aircraft brakes only see one large heat loading event per flight. Very few people I know try to autocross or drive a mountain road with an airplane. And one of my sports car buddies is an airline pilot but he always brings the ST when we go cruising.
"Breaking up the boundary layer" finally clicked for me; I think another way to look at this is that the vanes introduce turbulence. Since the heat transfer mechanism from the rotor to the air is largely through convection, the turbulence makes the heat transfer more effective.
Heated brake pads used to off gas and that would try to push the pads off the rotor; holes and slots were made to address pad gassing. Newer pads don't off-gas so much, so holes and slots are primarily for looks while wearing out the pads faster.
Isn't this what brake cooling ducts do? By forcing cool air onto the rotor it displaces the hot air. Several guys on the Focus ST forum that autocross have devised wings similar to a Porsche to divert air onto the front rotors. For those unfamiliar with the Focus ST, Ford uses the front...
In short, sure. Figure in all the other variables, valve and ignition timing, fuel octane, piston and combustion chamber shape and you could approximate the deltas.
Not to mention the great fun in removing the axle shafts from a friend's full floating rear end and reinstalling the hub caps some late night. Not that I would know anything about that
I was thinking the same thing; first line of defense is keeping the windows out of the way of rotational planes. A flywheel of connecting rod has so much more mass and kinetic energy than a bullet ...
I'm pretty sure aftermarket manufacturers have programs to determine this, engine size, cam/power range, weight, gear ratio, etc. would all be entering arguments.
Yes, a few cars have the "mani-cat," probably to allow for the fastest light off of the cat. So the distance is not as far as a conventional after the Y pipe/under the car setup, but still, the engine sucking the exhaust. Would like to see the bulletin before I push the "I believe" button.
