![]() the kit really WORKS! I set the pulleys to the slowest speed (54 RPM) and turned on the press and it’s amazing how slowly the 2″ holesaw is spinning now. a minor tradeoff, IMHO considering what you end up with as an end result. You DO have to make some cuts in the original sheetmetal pan and top cover of your drillpress so that you’ll have adequate belt clearances…. you’ve been warned!Īs you will notice, the kit doesn’t really take up too much extra space and tucks-in pretty nicely. Trying to hold the all of those heavy parts up with one arm, while installing nuts and bolts with the other hand is nearly impossible…. The front belt has a little more slack than the rear belts but so far it seems like it’s going to be OK.Īnother thing I learned is that it’s MUCH easier to install this kit if you lay the drillpress down on it’s face so that you can work on the motor/plate installation horizontally. I tried it both ways, and ended up with the pillowblocks facing forward as shown. facing rearward) as this will affect the belt lengths and tension that you can apply to the forward belt that turns the drill spindle. The only real tricky part is figuring out which way to install the large motor plate (pillowblocks facing forward vs. This is not unexpected… you’ll see the fix later on. You can also see that the sheetmetal pulley tray is interfering with the installation of the rear pulley and belt. (In the next photo, the pulley stack is not installed yet) there is a small 2″ new pulley that gets installed on the motor itself, and the pulley stack that used to live on the motor, is transferred on top of that large 8″ pulley wheel. This gives you a place to drop on the large 8″ speed reduction pulley…. The next step is to install the pillowblock bearings and shaft onto the offset pulley plate…. Step 1 is pulling the motor from the drillpress, though to be honest I probably could have installed the new plate without unwiring it completely. Here’s an example of how the setup will actually affect my spindle speeds using the slowest pulley combinations: The idea of being able to drop these speeds in a cost-effective way was very tempting. as we all know, REAL metalworking drill presses are a LOT more money than the woodworking ones (I think I paid maybe $300 for this one brand new). ![]() ![]() This is a woodworking drill press, so the spindle speeds are substantially higher than what you really want for metalworking…. Here is the original speed chart for my Delta. It consists of a large offset pulley mounting plate, and a set of 4:1 ratio pulleys that will cut the speed of the motor down to a fraction of it’s previous setting (about 25% of original, I’d say!). Here’s the holes I am trying to drill, and the kit that I received: (Diet Coke not included) He suggested a 4:1 reduction kit based on my particular drillpress (Delta, Model 17-965) and a few days ago the kit arrived via UPS…… it gave me some motivation to get back into the shop and start spinning a few wrenches. Fortunately, Joe over at RogueFab saw my previous thread posts and contacted me about my drillpress issues, and we talked for a while about his reduction kits and how they would be a low-cost way to give me better cutting capabilities, and finish up all of those 2″ speedholes in the monolith crossmember. probably weather-related, time change….whatever. It’s been a rough few weeks and I haven’t been making any efforts to get out into the garage to work on the truck project.
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