The unofficial RU-vid channel of the Midwest Aerospace Workshop. You will find content concerning automotive and aerospace engineering, radio electronics, and some extraneous bits and pieces.
Im literally building 1 of these for my kids know, im using an 80cc engine what they mount on mountain bikes and it fots nicley in the frame, im also leaving the electric motor on , just gotta remove the mounting plate for were the battery used to be, supose its kinda a hybrid lol, ive changed the wheels to much thicker ones like you get on a quad, was vonna try and experiment with some sort of compressor system as a small turbo but powered by a high speed motor, dunno if it will work just gonna tdy it, might even make a video
Fatigue? Perhaps. It definitely has short service intervals, as many parts which are bushed or have bearings in a car are just steel-on-steel with some grease here. As for it being weak, though, I am inclined to disagree. It's definitely proved to be strong enough for driving about
Make sure your weed wacker engine has a centrifugal clutch and some way to attach a #25 sprocket. If not, get a pocket rocket engine off ebay like I did
I could do an arc with a MOT modified transformer, 12V AC, I know AC is harder to maintain an arc, it means it's possible do with a car battery, but you have to find out the way to do it, I tried do it with 6V AC and it really don't works, but at least 12AC, you can badly contacting touch (touch and untouch some times) the tips to heat then until they start become incandescent, this time you may be able to get an arc, low voltage is harder to get an arc, really need know how open the arc to be successful, I've got 25A of arc current. If you have more 12V batteries (3 of then), you can try 36V DC arc, it must be stable, because you must know AC has turns on and turns off because the 60Hz oscillation, the voltage rises on positive side, downs to zero, keeping downing to negative side peak, and than, rises to zero again and keep rising to positive peak, this happens all the time at 60Hz, this is what make a AC arc be harder to reach, this is why DC inverter welder machines are better. But you must reach a stable arc with a lower voltage that you got it on 50V AC voltage, like 24VDC or 36V DC using batteries linked in series.
In the late 70's I was trained doing this, I'm a lithographic printer and we use arc lights (using carbon) to expose the film to metal decorating plates. We also use to recycle to the steel and copper plates used on the presses. It's all digital these days now.
Tbh it is. The secondary windings should really be 8 or 6 gauge, but with only two transformer cores to work with, it was not possible to fit enough windings of the thicker wire in to produce the required output voltage (stick welding becomes very difficult with an open circuit voltage of less than 35 or so), hence I opted to use 10 gauge wire, and was able to fit enough windings to get an OCV of ~50 volts. It does heat up pretty fast though
@@Vromo. In all honesty, I really miss making videos about random mechanical projects, but being an overworked PhD student several hundred miles from my old workshop makes it more or less impossible…
I’ve built several record players both with tubes and solid state technology, importance is to keep alive the hand-made spirit of the old electronics era, which is always fascinating
It's a lot of fun building a record player yours turned out very nice. I myself made one from left over wood and parts off of broken players I featured it in one of my Seeburg 1000 videos.
Kiran Digavalli that is actually a bunch of 2x4s made into a square with a plywood top and stained to look old. I added a kitchen handle for cool effect. As for the electrical stuff. The motor is a dc 12v that came off an old junk RadioShack turntable from the 70s along with the platter. I used a classroom record player tonearm and added a counterweight so I could install a Pickering magnetic cartridge. The speed control is a variable resistor with a switch that allows me to switch to 16rpm mode. This whole unit runs off a wall power brick and the audio comes out two rca cables with a ground wire. I also have a toggle switch for easy on off cueing and a power led. This went through different modifications before I was satisfied with it. It originally had an arm made out of an erector set piece with a hinge and a Garrard crystal cartridge but once the cartridge failed and the arm started to have trouble tracking I changed the arm completely. Also the motor has a microchip controller to keep the speed constant
