Real man of genius! What an amazing idea

I saved the pics of your threaded table lift. After several back surgeries these tables are a bear to lift by hand. These machines are pleasing to the eye , plus they're extra ridgide.

Thinking outside the box! Great video!!

That's clever and resourceful. Way cool, man!

Love your video, Sir. Thank you.

What a clever idea! If you made a hub for the large pulley that had a one way bearing, you could just switch electrically between the two.

Thanks for the video!

Nice job Sir

Using the original motor as an idler shaft is a great example of outside the box thinking. This is the same in principle as using a three shaft, two belt system available on some drill presses with the odd shaft being an adjustable intermediate one. The fun part of this one is that the motor is cheaper than almost any one of the parts of the intermediate shaft design! For using the original motor you might need to check to see you are not over-speeding the new motor, but it would an easy task to roll off the new belt. My old Craftsman uses a third scheme of using many sheaves on two pulleys by switching to very narrow belts and sheaves giving a top speed of 8500 rpm, but a low speed in the 150s range and a belt that tends to slip with big drill bits in steel. Sorry not to be specific, I’m not going out to the shop this early and the exact number is pretty irrelevant. I could probably move the existing pulleys up their shafts and insert two narrow higher ratio cog belts to the spindle shaft and get as much as a 5-10 ratio slower spindle speed (850 rpm high speed and maybe 15 rpm low) with a 10:1 cog belt ratio, and perhaps a 2:1 ratio to halve that virtually unusable 8500 rpm current top speed while removing the possibility of belt slip in the high torque, low speed end of the belt train.

@frenchcreekvalley

6 жыл бұрын

I always remove the "slow speed" belt when using the main motor.

old man knows a lot reminds me of my dad.

The double shafts on the motor are in place so that a second pulley could be attached on the bottom to power another tool.

Great , Nice Idea

So it looks like you are able to maintain tension with all those belts. Usually when one uses a Jackshaft and another sheeve there is a problem with belt tension and the belts skid on the pulleys. Have you tried drilling steel with a 1" diameter or larger bit with your machine? Great video thumbs up.

Thanks sir

Great idea! How many rpms is the sump pump motor ? Keep up the good idea videos!

@frenchcreekvalley

3 ай бұрын

1725 rpm

Beautiful craftsman 150 drill press. I’ve got a floor model 100 and a bench top 80 model. What kind of table lift do you have?

@frenchcreekvalley

5 жыл бұрын

I don't know what brand the table lift is. A Friend had it under his bench for a long time and gave it to me. I put a couple of pictures of it at the bottom of this webpage: spaco.org/metalshop.htm

Great video, thanks for sharing. How does the second motor transfer power to the spindle?

@frenchcreekvalley

4 жыл бұрын

I explain how the second motor is belted to the main motor starting at about minute 3:40. In the slow speed mode, the main motor is simply acting as a jack shaft. So, in that mode, the main motor's ouptput shaft end still drives the spindle.

@1duesy

4 жыл бұрын

@@frenchcreekvalley thanks!

Why is that transformer coil mounted to the switch exposed and not in a shielded box?

@frenchcreekvalley

5 жыл бұрын

That's a low voltage transformer that provides power to a small aircraft cockpit light bulb that I use to light up the work area right under the chuck. If you look REAL close at about 4:40, you can see a wire snaking down and to the right. It's a piece of solid 14 gauge electrical wire. The little light bulb's socket is connected to it, just to hold it in place. I can bend the wire to put the light exactly where I want it. That was supposed to be a temporary thing about 35 years ago. I think that solid wire broke once about 10 years ago and I replaced it. No failure since. I guess it just turned out to be so handy, just as it was, that I never did do anything better. i am almost embarrassed to tell you this, but not quite.

curious as to why i cant find info on slowing down a drill by using a potentiometer or voltage regulator of some sort wired into the original motor. will it fry the motor out

@frenchcreekvalley

4 жыл бұрын

Most drill presses and other machine tools that have single phase, single speed motors are "synchronous". That means that they are designed to run at only the speed that comes from 60 cycle power (USA). If you did try to slow them down as you suggest, they will simply TRY to maintain that speed while drawing more and more current from the power source. They will actually loose power, and, pretty soon destroy themselves. These days, they do make VFD's (Variable Frequency Drives) that actually allow the user to change that 60 cycle incoming power to either more cycles per second or fewer cycles per second. In this case, the motor's speed CAN be changed safely, within limits. Not always, but in most cases, these VFD's are designed to output 3 phase power, even from the single phase power source that most of us have in our shops. There are, nowadays, many (usually Chinese) imported hobbyist machine tools that have motors that run on Direct Current, not the Alternating current that comes into our (USA) homes. These tools rectify our incoming power to make DC, then, using a DC motor and speed controller, allow for variable speeds. I hope this explanation helps.

@popanollie1

4 жыл бұрын

@@frenchcreekvalley helps greatly. Thank you.

Looks like a total hack job.