Recent content by Ryoko

Yes, it's a pretty steep bend. I need to make a 1/4" U-channel for use as an edging trim piece. So I'll be forming both sides of a flat strip. I'd use off-the-shelf trim, but they are either the wrong material or have sharp corners which is not desired for this application. I am going to make a...

I need to make a set of dies to roll form a 1" wide strip of 5052-H32 0.063" aluminum for a home project. The bend radius is 1T (0.063") and I want to bend it to 90 degrees. My understanding is that this type of aluminum is a bit springy. So if someone could give an estimate on how much spring...

A richer mixture lowers the exhaust gas temperature. In other words, less heat.

There's a square root in there, so you need to consider both the positive and negative roots.

A high positive G maneuver and a sharp roll to the right would take advantage of the gear's linear and angular momentum in an effort to free the gear.

Lift is proportional to the change in momentum imparted to air. This change in momentum (and hence air velocity) is observed as downwash.

I've forgotten much of my thermo from college physics, but I think (at least part of) the answer as to why a richer fuel mixture makes more pressure/power is because you're converting more liquid (the raw fuel) into a gas.

No. I started from scratch. I have a design which uses a pair of PIC processors and a lot of glue interfacing to talk to the various sensors and igniters. The idea is an extension of an earlier design which I made to replace the VAFM in my old 4Runner with a modern MAF sensor. It made a big...

I under the difference between MAP and MAF based systems. The EFI I'm working on is intended to be a MAF system with a MAP fallback mode. The MAP (along with the TPS) will be used as a load sensor to fudge the mixture based on power demands. And yes, I have circuitry for an O2 sensor and dual...

I'm finding mixed info on whether it's necessary to correct for temperature for a MAF. Some data I've read says that they are temperature compensated. But I'm seeing info elsewhere that suggests a correction is needed. I guess it depends on capability of the MAF unit being used. As I understand...

Unfortunately, data sheets don't seem to be available -- at least none that I could find via google.

I'm working on a DIY EFI system for automotive use. I have a question about the mass air flow sensor operation. I know they measure the volume of air passing thru them. But the question is whether that measurement needs to be corrected for air temperature or if the MAF sensor does that by...

Let me ask for some clarification about what it means to be in the same inertial frame of reference -- Does this mean that two observers are experiencing the same magnitude of acceleration or does it mean accel + velocity + direction?

Thanks. I'll take a look at the links tomorrow when I get a chance. I've read the O'Really Javascript: The Definitive Guide book ... all 1000 pages. Pretty dry reading. Nice reference, but it doesn't really offer a lot practical use guidance. Just lots of theory.

OK, so let's simplify this a bit. Let's say there are only 2 ships. They start out next to each other and synchronize their clocks. Then they move apart for some distance at equal speeds, coast for a while (no acceleration), then turn around and come back together and compare clocks. What will...