Search found 773 matches

by BigDumbDinosaur
Sun Sep 11, 2016 5:37 pm
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 48051

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: 727

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: 5380

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: 1836

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: 636

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...
by BigDumbDinosaur
Tue Sep 06, 2016 10:51 pm
Forum: Live Steam
Topic: Rough and Tumble
Replies: 9
Views: 2451

Re: Rough and Tumble

Bill Shields wrote:there you go...

very little on a loco is plumbing unless there is a poop pot in the cab....

it's PIPING!
Dunno about that. Back in my railroad days we often referred to the piping on a locomotive as plumbing, e.g., air brake plumbing or fuel plumbing. :D
by BigDumbDinosaur
Tue Sep 06, 2016 2:30 am
Forum: Milling Machines
Topic: Power feed question
Replies: 8
Views: 1863

Re: Power feed question

wally318 wrote:As part of my Rockwell horz/vertical mill rebuild I'm entertaining
a power feed. What would be better, a geared type like the one found
in the pic below or a Servo 150?
I'm old school. I'd go with geared. There's less to fail.
by BigDumbDinosaur
Mon Sep 05, 2016 9:19 pm
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 48051

EMD F7 in SCALE

I will soon be resuming on writing the narratives on this build. Meanwhile, here are some more pictures. es_front_view_reduced.gif Above is a front view from the engineer's side. Since I posted the last set of pictures I've done a little more detailing, and have test-fitted the engine room ventilati...
by BigDumbDinosaur
Sun Aug 28, 2016 8:14 pm
Forum: Live Steam
Topic: Chassis lubrication oil?
Replies: 17
Views: 2215

Re: Chassis lubrication oil?

I have successfully used way oil for all motion lube on my Allen Ten Wheeler. It's especially good on the rod brasses (actually Oilite bearings.) No measurable wear after 550+ real miles of operation. ~RN Just wondering, is oilte to be recommended for rod bearings? What about 660 bearing bronze? Oi...
by BigDumbDinosaur
Sun Aug 28, 2016 11:01 am
Forum: Live Steam
Topic: Chassis lubrication oil?
Replies: 17
Views: 2215

Re: Chassis lubrication oil?

Hypoid gear oil, aka extreme pressure lubricant, aka SAE 90, works well. As was said above, any oil is better than no oil.

STP, which is a form of mechanical snake oil, is not a good choice for much of anything. An engine that needs STP needs an overhaul. :D
by BigDumbDinosaur
Sun Aug 28, 2016 12:45 am
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 48051

Re: EMD F7 in SCALE

Would love to know how you built the nose with all the contours! As Dave noted above, he can supply the nose castings. The nose casting is made from Alumilite , a material that was originally developed for the aircraft industry to facilitate the production of lightweight complex shapes, such as win...
by BigDumbDinosaur
Fri Aug 26, 2016 9:13 am
Forum: Build Log
Topic: EMD F7 in SCALE
Replies: 102
Views: 48051

Re: EMD F7 in SCALE

rrnut-2 wrote:Looking great! Keep up the good work.

Jim B
Thanks!