Recent content by jgarrett

Elmer's #17 Pumper engine Before I put this project on the shelf I figure I will swallow my pride and ask for help!! I am unable to get it to run on both cylinders. I can get it to run on one at a time with no problem, but no such luck with both. I have adjusted the valves so that each cylinder...

I am building the #41 factory engine and am having trouble machining a part. The crank is giving me fits!!! I am not very good at reading blueprints. I can do the outside radius on the top OK but cannot seem to get the inside radius on the sides down. What is the 1-1/4" radius pivot point?? If...

Exactly what I am looking for... Thanks,,

What is a good source for 3" cast flywheels??? Prefer cast iron or bronze. I have been making then from a piece of 3" rod I had but am running out. Thanks, Julian

I seem to have the tool working on a piece of scrap.... That is an interesting site... Cheers, Julian

That is the one I used to make the bit!!! Thanks,,

OK..finally got it turned. Had to use a combination of LH, RH and pointed bits.. My major problem was chatter because my chuck is 6" and will not hold a piece of 3" stock, so having to use my larger 4 jaw with jaws turned around. That makes them stick out so far they would hit the X slide if I...

Thanks for the replies!! I will give the trepanning tool a try.. Julian

Yes, it is a typical flywheel with recessed sides having square shoulders on each side. I tried a 60º threading bit and it did not want to cut either. I guess I need to try different geometry settings for the tools.... It is for an Elmers #17 pumper.

Hello, I am needing to cut a recess on the inside of a piece of 3" steel for a flywheel. I will be going about 1/4" deep. I have tried a couple of boring bits and all it does is chatter. There will be a uncut hub in the center. What type of bit is best to accomplish this??? Julian

Baron and others, After a lot of deep thinking I'm not sure that at my age I want to tackle something like that,,, I will probably just go with the DC motor option, Cheers, Julian

Baron, I want to use it to drive the X table on my mill (24"). Yes you are right...I probably could use a DC motor and gears to do the same thing.. It's just that I plan to get into CNC at some point and this would get my feet wet.. Julian

Hello, I want to build a stepper motor to control a single axis on a small milling machine. I would like to be able to vary direction and speed from a "box" without having to use a PC. Is this doable?? Any help would be greatly appreciated. Cheers, Julian

This vise came with my 8520 I just purchased. Has no mfg,or brand markings anywhere. Any one out there familiar with this vise??? It has about a 4" wide jaw. Thanks, Julian

Baron, Thanks for the quick reply,,, it is not the split pin in the U saddle, it is a hole about 5/16" in the ACME nut itself. If you look down in the hole you can see the ACME screw, JG