Model Engines and Accessories for Hobbyist and Machinist
Brass oil cups available in 2-56 and 5-40 thread.
The 2/56 size is 3/8″ long and the 5-40 size is 15/32″ long.
(verified owner) – May 7, 2014
“Well oiled machine” is a phrase that steam engine owners need to live by. Although I have not placed the order yet, four of the 2-56 threaded oil cups will be added to my PMR live steam twin cylinder #7 engine. I have already tapped the holes on top of the main drive shaft and all is ready for installation.
(verified owner) – January 8, 2014
Let me start by saying, I’m no machinist……..Drilling the head caps of the #3 Mill engine using the 2-56 Oil Cup requires precision (ooops). I did these on the drill press and using a center punch (hand held / still need to get a vise)…….needless to say, I drilled them off center screwing up the small risers.
No fault of PM…..aging eyes. Recommended Fix: I used both a round & square needle file notching out the space. This recessed the Oil Cups in a “U” shaped cut retaining the original profile of the caps. I’m actually happy with how it finished up. the recess also allows for a lower mounting and reduced chance of shearing them off now?????
Not that bad
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