Search found 137 matches

by Bentworker
Tue Jan 19, 2021 10:41 am
Forum: General Discussion
Topic: Why do I need a Variac?
Replies: 17
Views: 401

Re: Why do I need a Variac?

They are good for hot knives, pickup / dropout tests on AC coil voltage and current relays. Pickle lightbulbs (google it).
by Bentworker
Thu Jan 07, 2021 7:46 pm
Forum: General Discussion
Topic: Compressor timer switch question
Replies: 35
Views: 1661

Re: Compressor timer switch question

I’d imagine you would need a 240V time delay on timer and a 240V contractor rated for 5HP E0100106-8F1B-4EA2-8254-2AB522872452.jpeg The black is what I imagine the existing wiring to be. You would have to disconnect the motor from the pressure switch and add everything in red to act as a run permiss...
by Bentworker
Thu Jan 07, 2021 2:32 pm
Forum: General Discussion
Topic: Compressor timer switch question
Replies: 35
Views: 1661

Re: Compressor timer switch question

Did you get a solid answer on how to wire an excess run timer?
by Bentworker
Sat Jan 02, 2021 1:13 pm
Forum: General Discussion
Topic: Conic Clutch design
Replies: 6
Views: 591

Re: Conic Clutch design

Cone clutches made me think of BCS walk behind tractors (made it Italy). They use a cone clutch to couple the engine to the transmission. The tractors are still made today, there are exploded diagrams and videos of the clutch out on the internet if you think they may be of use to you. The tractors a...
by Bentworker
Tue Dec 15, 2020 11:59 am
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: Free speedranger drive unit
Replies: 12
Views: 1287

Re: Free speedranger drive unit

I’ve seen some old variable AC motors on cranes where the speed (slip) was controlled via a variable resistor connected the the rotor. Seems like it was a popular method of variable speed about 90 years ago.
by Bentworker
Tue Nov 17, 2020 8:28 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: FS Dr chucks-calipers -tapping heads
Replies: 11
Views: 3389

Re: FS Dr chucks-calipers -tapping heads

That Whalstrom is a fun tool.
by Bentworker
Tue Oct 27, 2020 9:12 am
Forum: General Discussion
Topic: Jet Lathe
Replies: 10
Views: 3014

Re: Jet Lathe

@duckman903 The manual that NP317 gave the link to has the wiring schematic. There should also be one in the box (or at least there has been one in the two jet lathes I have worked on) If you are lucky the one in the box may have a color key for the wires, if not you will probably have to dig a litt...
by Bentworker
Thu Aug 20, 2020 10:16 am
Forum: General Discussion
Topic: Online Machine Simulators
Replies: 3
Views: 1698

Re: Online Machine Simulators

No experience but I could see how that would be a neat tool before you let a student run the real deal.

I always think back to this guy named Leon at Butte College that by the end of class was only qualified to operate a file- for good reason.
by Bentworker
Sun May 24, 2020 1:36 pm
Forum: General Discussion
Topic: Ceramic sanding belts: worth the price?
Replies: 2
Views: 1524

Re: Ceramic sanding belts: worth the price?

In my opinion the 3M cubitron II products are worth every penny. I have not seen anything that comes close to removing material as fast and as cool as Cubitron 2. I got some for grinding auto body sheetmetal butt welds, and they worked like magic. Since used them for all sorts of things, sharpening ...
by Bentworker
Sun May 17, 2020 7:23 pm
Forum: Lathes
Topic: Need help with lathe finish
Replies: 23
Views: 8730

Re: Need help with lathe finish

It is impossible to judge the condition of the switches from the outside appearance. I’d suggest you get a multimeter and do some testing to prove function of the switches
by Bentworker
Thu May 14, 2020 12:33 pm
Forum: Lathes
Topic: Need help with lathe finish
Replies: 23
Views: 8730

Re: Need help with lathe finish

I’m curious what the condition is of that switch labeled SA1

Also looks like your control transformer is connected between terminals S&T. I’d double check to make sure your generated leg is not on one of those terminals.
by Bentworker
Thu May 14, 2020 10:44 am
Forum: Lathes
Topic: Need help with lathe finish
Replies: 23
Views: 8730

Re: Need help with lathe finish

I worked on one of those Jet lathes with a two speed motor a few years ago for an acquaintance. On most of those Jet machines there is a wiring diagram glued to the inside of one of the panels. You should turn the power to the machine off, and start removing covers. If you find the schematic take a ...