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Brought back wonderful memories of my neighbor and best mans grandmother, she worked at Whitman and Barnes back in the day, sorting drill bits. She could tell a 1/4 from and E by feel. :) I think he still has some of his grandparents drills laying around.

It was basically a case of a defunct company whose IP rights were never asserted. Someone bought the name in a fire sale and then began to clamp down. They were recognized as being within their rights, but extremely unpopular as the manuals were the only form of support (wiring diagrams and test...

You say that like its a bad thing? :) Since that was the majority of their business, its hardly surprising. There are a few small businesses out there making some robotics and microcontroller stuff, but that doesn't seem to be making anyone rich. Make magazine, as well as a host of other...

Velleman is a pretty well known supplier of electronic kits, pretty much the largest left since Heathkit went under. Its a simple "point replacement" ignition to use standard automotive coils.

Thanks for the pics of the business end of these gems. Have never had a chance to work with one before, and at the prices quoted, likely not very soon either. :(

On the sparkplugs? They seem to be the old 1/4 watt resistors, although they may be wire wound type and still have some inductance. Not something you want to put on a tuned circuit in a sensitive radio receiver but for this purpose probably not an issue. The two round whiteish components taped...

Well, progress is progress, you have at least proved your concept of getting an electronic fuel injected motor running. There are nearly an infinite number of ways to tackle RFI problems, and most of the solutions are very dependent on the actual situation. I once used a ground rod in a well...

I guess thats possible, but the real stress is making a dovetail cutter that small. ;) I have a whole strip of surface mount hall sensors. Next version should have the magnet behind the sensor and metal collecting and moving the magnetic field in front of it like the newest sensors. For that, I...

Here is a pic of a complete hall and magnet assembly on a steel U frame to concentrate the tiny (1/8x1/16) magnets lines of force across the sensor. It triggers whenever metal crosses in between the sensor and magnet. Two threaded holes in the bottom are 4-40. That was one I just hacked together...

In automotive practice they are usually encapsulated in plastic, I just superglued mine in place. Here is a pic of a bottle cap type shutter, the vanes fly between the magnet and the sensor, switching the magnetic field on and off. I consider it safer then flying magnets. Gap will depend on...

I would be tempted to grab some copper sulphate drain cleaner and copper plate the quill.

Hub could be aluminum. Cast or barstock.

Brake rotor?

Cast iron "weights", be they window, tractor, barbell, or whatever, are notorious for being chilled and full of nasty hardened areas inside. If their only original requirements were for its weight, then its not likely to be useful for a machinist.

Hope you find someone close by. I occasionally fly to Memphis for business, but I don't think they will spring for my foundry as carry on luggage. :)

The valve seats were not called out real well in the original drawings, so I drew it in cad and came up with that. Used the square cylinder heads on an engine of my own design. Square made a lot of things easier in the workholding and machining department. I believe the 6061 square stock was a...

Just for comparison, here is a square Edwards cylinder with O1 steel valve seat inserts.

Its hard to comment on the worthiness of that offer without knowing a bunch of specifics, like year, model, condition, accessories, and shipping/rigging. :cool: Base price for a used/good BP in our area is only 2-3k.

With coils like that you dont need to hook the scope leads up to anything, just lay them nearby and set the scope voltage gain. The early GM HEI ignition used a tin can formed to the top of the coil as an inductive pickup. Resistor plugs are not going to help, its the coil primary kick at...

Looks good, but sodium silicate (waterglass) is only $15 gallon here, so not all that much cost savings.