Search found 756 matches

by BigDumbDinosaur
Sun Oct 02, 2016 5:25 pm
Forum: 3-in-1 Metalworking Machines
Topic: 3 in 1
Replies: 10
Views: 4941

Re: 3 in 1

I've been largely unimpressed with 3-in-1 machines. Of course, if space constraints are severe you go with what will fit in the available space. However, I concur with the others that the lathe functions are okay, but the milling and drilling features tend to be mediocre.
by BigDumbDinosaur
Fri Sep 30, 2016 12:49 am
Forum: Riding Scale Railroading
Topic: Electric motor question
Replies: 5
Views: 2060

Re: Electric motor question

It sounds as though the traction motors have wound fields. If so, they are superior to permanent magnet motors for propulsion purposes. I would not replace them.

Are there any identifying marks on the motors, such as manufacturer and part number?
by BigDumbDinosaur
Fri Sep 30, 2016 12:42 am
Forum: General Discussion
Topic: Shaft Key Walks Out: is Loctite the Answer?
Replies: 30
Views: 3019

Re: Shaft Key Walks Out: is Loctite the Answer?

Yesterday I fired up my belt grinder, and I heard a faint clacking sound. I thought the wheel might be banging against the shaft because the shaft key was loose, so I tried to tighten the set screw. Then I realized the key had walked out of the pulley just enough to tap the grinder's chassis when t...
by BigDumbDinosaur
Tue Sep 27, 2016 12:26 am
Forum: Site Software Questions and Answers
Topic: New Forum Created "All Things Pneumatic"
Replies: 4
Views: 4324

Re: New Forum Created "All Things Pneumatic"

Take a look in the CAD/CAM forum. Some pneumatic stuff is in there that seems to be out of place.
by BigDumbDinosaur
Wed Sep 21, 2016 9:20 pm
Forum: The Junk Drawer
Topic: Are Engineers the Most Obnoxious People in the Universe?
Replies: 98
Views: 15561

Re: Are Engineers the Most Obnoxious People in the Universe?

Readers are here because they have been granted permission. No one has a "right" to be here---the right is granted, and can be withdrawn due to not posting with manners, observing the simple, but effective, rules we enforce. You mean someone has the privilege of being here. Not looking to start an ...
by BigDumbDinosaur
Wed Sep 14, 2016 9:25 pm
Forum: Live Steam
Topic: And we are back!!
Replies: 32
Views: 6787

Re: And we are back!!

Can we get the posters' avatars and particulars back to the left side of the screen please?
by BigDumbDinosaur
Sun Sep 11, 2016 7:56 pm
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 44211

Re: EMD F7 in SCALE

Thank you for your concise descriptions of what you do. You're welcome. Thank you again from the Southern Hemisphere....... I see you're on the east coast of Australia. Australia is one of the few places in the world that I have not visited but would love to see. Unfortunately, chronic health probl...
by BigDumbDinosaur
Sun Sep 11, 2016 5:37 pm
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 44211

Re: EMD F7 in SCALE

EMD F7 in SCALE ———————————————— A number of posts ago, I had described how the components for the F7's trucks had been made by Bob Snippe but due to a number of engineering issues, were less than satisfactory. There was more to it. I had gotten the unit out to the railroad in 2008 following a peri...
by BigDumbDinosaur
Sat Sep 10, 2016 1:52 am
Forum: General Discussion
Topic: Mitsubishi Motor Quality?
Replies: 3
Views: 709

Re: Mitsubishi Motor Quality?

If Mitsubishi's electric motors are as good as their electronics stuff you should be okay.
by BigDumbDinosaur
Sat Sep 10, 2016 1:50 am
Forum: I.C. Engines
Topic: Index of spark plugs
Replies: 9
Views: 4959

Re: Index of spark plugs

Back in my racing days (methanol-burning big block Chevy), I used 0.05mm thick round shims to get the plugs correctly aligned. Engines fired on methanol do best with very high compression ratios and in the case of the engines I ran, if the plugs weren't correctly aligned the outer electrode would be...
by BigDumbDinosaur
Sat Sep 10, 2016 1:40 am
Forum: General Discussion
Topic: Old Delta drill press
Replies: 11
Views: 1778

Re: Old Delta drill press

Are not all the crank devices relying upon a rack? I'm just thinking, not talking down-probably up :) So this isn't a terrible heavy table and broaching out a section of the table for a rack doesn't make sense. There are other ways and we have seen them. Wire cable type winches , where the handle s...
by BigDumbDinosaur
Thu Sep 08, 2016 2:31 pm
Forum: General Discussion
Topic: Bearing Handbook PDF
Replies: 2
Views: 620

Re: Bearing Handbook PDF

I don't know if this is a useful resource or not, but I thought I'd share it. I always see people asking about bearings and motors and RPM's. I found a PDF handbook about motor bearings. I assume the material inside it applies to bearings not made by the company that published it, but I could be wr...