Gallery, Projects and General > How do I??

Slow down a drill press ?

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mattinker:
I know you've made enquiries about the "Rouge" reducer kit, but I very much doubt that it would be cheaper to buy than to make!

Here's one of those nice old articles on doing it!

MetalMuncher:

--- Quote from: mattinker on October 14, 2015, 04:18:28 AM ---I know you've made enquiries about the "Rouge" reducer kit, but I very much doubt that it would be cheaper to buy than to make!

Here's one of those nice old articles on doing it!

--- End quote ---

Thank you! Actually, the last 3 parts on the list in that article, in prices I am seeing today, come within $20 of the 4:1 Rogue kit I am considering, which would take my press down to 100 rpm. The article doesn't seem to mention the reduction ratio achieved. The other thing about the method in that article is that the motor, being inverted, has to be reversed. I know not all motors have that feature, and I would be surprised if Craftsman used a reversible motor on this press in 1985, when corporations were looking hard to cut their costs. Back when that article was written perhaps reversible motors were more common. I do know the motor has a centrifugal contact assembly because of the capacitor start. I've had some issues with it in the past. Not sure if that would work in reverse rotation?

Having sent the user manual PDF for my press to Rogue, they have responded that although Craftsman on rates its motor as 1/3HP, it is on a frame which is common for today's 1/2HP motors, and is probably under-rated. So the motor bolt pattern should match, and they think their kit will likely fit my drill press.

One road block I did discover last night - if I have to invert the 5 speed cone pulley on my motor (likely for anything I would want to try which stayed contained at the top of the press) the best price I found on a pulley alone is $80, and they are not easy to find. Also, the motor shaft is too short to allow an inverted cone pulley unless its bore and set screw reached all the way out to the very end of the large diameter pulley in the stack. I could not find any that were made that way. To sidestep all these hassles, the Rogue kit seems like the preferred choice.

MetalMuncher:

--- Quote from: trevoratxtal on October 14, 2015, 02:57:49 AM ---A "Drill speed reducer" fits in the chuck and turns only when grasped.
So fits in any drill Press or portable.
Very useful for tapping .
A Ebay search will give a clue.
I have used one for many years. works well.
Trev.

--- End quote ---

Thank you! An interesting tool I did not know was out there. Looks like they were made for portable drills, back before variable speed drills came on the market. :)

mattinker:
Just a thought, you have to reverse the motor if you turn it up side down. If you put the big pulley on top of the jackshaft just above the cone pulley, the motor can be mounted the same way up as standard.

Regards, Matthew.

MetalMuncher:
Thanks! I had not considered that.

Since it appears the Rogue Fab. 4:1 kit works for me, I have ordered one to try.

Thank you all for the input. There is much to consider when thinking of devising such a device, which is one reason I went with the retail choice. If they had been charging double their prices, I would probably have built something on my own. But for the cost of the parts in these alternatives, it wasn't much more cost to try their tried and true kit.

 :beer:

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