I posted a question over in the auto fuel section but would like to know from the Chemical Engineers exactly what problems (if any) arise when intoducing air to gasoline vapors. The companies that make these testers have a warning against using air but I dont see the problem especially since all...
I have noticed that some emission control smoke testers warn against using a supplied air source to test for leaks within the fuel system. They are afraid that the oxygen, as low as it is in air, with ignite some how with the fuel and blow up the car. They recommend an inert gas like argon. But...
I have an intermediate shaft in a transmission unit that goes thru a cast iron hole in the case. .0005 max gap and even with thick gear oil it leaks. I need something very thin that can get into that gap and seal it.
I have read that all ignition coils are actually 6 volt coils. 12v cars just use a ballast resistor to step the voltage down. If they are all the same, why are some marked 12v and 6v, different part numbers, etc.
I have a DC motor that has a problem. When a battery is applied to the motor the battery arcs and sparks. Attached is a rough schematic of the motor.
Things I have checked:
1. field is not grounded to case
2. commutator is not grounded to the armature shaft.
3. each pole has continuity to other...
I would like to make a growler (A/C electric magnet) out of a UPS transformer. I need to know if the orientation of the coil to the cut is important.
http://www.youtube.com/watch?v=yXQ0heuV6VE
