|Forum topic by fussy||posted 07-02-2011 01:56 AM||8033 views||4 times favorited||12 replies|
07-02-2011 01:56 AM
A while back I realized my 36 years old drillpress was inadequate. It was still smooth and powerful, but at only 5 speed, the lowest of which was 750 rpm, I burned a 3” plug cutter. Not wanting to spend big bucks on a new one (my Lovely Bride wouldn’t let me anyway) I did some research.
If you look at any 12+ speed drill press out there, they all have a idler pulley between the spindle pulley and motor pulley. This sits on a idler pivot that goes into a convenient hole in the head. PRACTICALLY EVERY DRILL PRESS OUT THERE USES THE SAME ARRANGEMENT. Mine is a HF (before HF-Chicago Power Tools) bench type with 1 hp, 2 1/2” stroke, weighs about 160# and cost $80 in 1975, so i looked at the manual for the HF 38142 and ordered the above-mentioned parts. The bearings were out of stock, so I ordered them from VXB (6202RS=about $19/10,oh well). The pulley was about $10, the pivot was $8, and I got the belts at TC when I saw what sizes I would need. Long story short, I can now go from 220 rpm to 3600 rpm with 14 stops in between. It is still smooth as silk, has more guts than a butcher’s dog, and I didn’t spend a whole lot of money. The Grizzly parts are identical, as I’m sure every other brand is. The pivot dropped in like it was made for mine.
Anyone in need of more speed selections on their dp should consider this. Save money and be HAPPY. Hope this helps.
-- Steve in KY. 44 years so far with my lovely bride. Think I'll keep her.