Search found 62 matches

by daves1459
Wed Jan 31, 2018 9:25 pm
Forum: Live Steam
Topic: will spring steel mill?
Replies: 22
Views: 1059

Re: will spring steel mill?

As mentioned above blue tempered spring steel can be milled with carbide cutters. Lacking a carbide center drill and carbide drills alone tended to wonder at the tip so I used a two fluted center cutting end mill to make the pilot hole. I found that side milling was very tough and hard on the cutter...
by daves1459
Thu Jan 18, 2018 6:24 pm
Forum: Live Steam
Topic: Eccentric Engineer - Product Update 11/30
Replies: 13
Views: 1881

Re: Eccentric Engineer - Product Update 11/30

What is the status of your small scale injector? I'm anxious to get one of these as soon as they are available so I can get it plumbed in and ready for the 2018 season as soon as the weather breaks.
by daves1459
Thu Jan 11, 2018 9:09 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

For some reason the pictures did not post. i'll try again.
by daves1459
Wed Jan 10, 2018 11:51 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

Below shows the finished results. It was an interesting project. I had not previously done any helical milling. There was a lot of preparation before any milling was actually started. There was a lot of calculation and a rather complex set up plus a special fixture that I'll never use again. Even wi...
by daves1459
Tue Dec 26, 2017 11:50 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

I gotta say - that mill is a thing of beauty as well. Heh! Guess I'm not the only one who thinks so. Such machines aren't commonly found in the home shop. How nice it would be to have a well tooled #3 universal horizontal mill at my disposal. 8) H A friend of mine gave it to me about 35 years ago. ...
by daves1459
Tue Dec 26, 2017 11:18 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

Since the frame is steel and the staves are aluminum, how did you attach the staves to the frame? Each end of each stave is held in place with a 5-40 socket head cap screw. The heads are counter sunk into the upper and lower frames. The top screws are concealed by the pilot beam. The lower screws a...
by daves1459
Mon Dec 25, 2017 11:44 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

Side and front view would be helpful. The two or three prototypes photos I have found that show conversion of the front draw bar to a coupler on with a long pilot show diagonal braces from the corner of the pilot beam to somewhere around the front of the coupler mount. That looked like a good idea....
by daves1459
Mon Dec 25, 2017 12:17 am
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

Nice work. My Railroad Supply Corporation CP-173 has a pilot fabricated from 1/4" aluminum with lots of filing and sanding to get the form right. Could you post a couple more photos of the coupler? Is it made to the Disney drawings? If so, I can dig through the Disney drawing set that I have. I hav...
by daves1459
Sun Dec 24, 2017 4:58 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

The attached photo shows the finished results on the pilot left side staves. The stave ends are flush with the pilot beam and bottom frame faces with a helix connecting them. The fit and finish are acceptable so I'm satisfied. Now I have to do the right side staves. Merry Christmas and Happy New Yea...
by daves1459
Sun Dec 24, 2017 4:54 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

Re: 1800s Pilot Construction

I decided the way to go was helical milling. Helical milling is described in detail in the Machinery's Handbook. Basically the process is to connect the spindle of a dividing head to the miller table lead screw with a set of gears so that the part rotates the proper number of degrees for the number ...
by daves1459
Sun Dec 24, 2017 4:30 pm
Forum: Build Log
Topic: 1800s Pilot Construction
Replies: 19
Views: 1233

1800s Pilot Construction

During the construction of the pilot for my 1.6" scale NYC & HR 999 project I was faced with how to effectively generate the helical face of the staves. The attached top view photo of the pilot of my Disney 4-4-0 shows a typical 1800s pilot with the helical face of the staves. The faces of top of th...
by daves1459
Thu Nov 30, 2017 7:41 pm
Forum: Live Steam
Topic: Eccentric Engineer - Product Update 11/30
Replies: 13
Views: 1881

Re: Eccentric Engineer - Product Update 11/30

As I wrote at the time of your first announcement of your small injector: I'm very much interested. Just let me know when and how much and I'll get the payment to you. I recall there was some debate about the maximum operating pressure whether it should be 100 or 125 psi. How did that sort out? I wo...