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  1. metal mite

    Rob Roy, Caribou, Juliet

    John, That was above and beond the call of duty. One word is worth a thousand words. do you know the gas port size? Do you have or need an arch in the firebox to raise the heat? What is the blast nozzle like. i imagine working hard could suck the flame right out. Thank you for the...
  2. metal mite

    Rob Roy, Caribou, Juliet

    That's a great idea. It is similar to Pete's Rob Roy setup except he uses a ceramic burner with metal air ducts. You can see on his thread how well that has worked out. I'm going to try wood pellets in the Tich. Have to make a grate out of stainless sheet with 3/16" air holes on 1/2 inch...
  3. metal mite

    Rob Roy, Caribou, Juliet

    John, That's a great shot. Sure looks like a Caribou frame. I used larger holes I think. That was thirty some years ago. That saves a lot of crud on engine and driver. Do you have a pilot for when you're not moving, how do you cycle from working to resting the engine? Kap
  4. metal mite

    Rob Roy, Caribou, Juliet

    J train Id be interested in seeing the burner if you have A picture. I tried making one for my first Robroy yeats ago. It was a steel box with a half a zillion holes for the gas and the inards like a propane torch. Never could keep steam up. I was using the little torch bottles. They kept...
  5. metal mite

    Rob Roy, Caribou, Juliet

    Steam Doug, Have you run her yet? I'd like to know how it works out. Are you going to use coal, Welsh steam coal is great. Their are a couple mines in West Va with some good coal too. Down near Bluefield. Love that rivit detail! That Blue may highlight the coal mess though. That's why...
  6. metal mite

    Rob Roy, Caribou, Juliet

    Doug, That's a nice shop. two lathes, mill, rotary table, How long have you been doing machining? Your engines look really nice. my shop is 30 by 40 but full of stuff. too many projects. Can hardly move. Kap
  7. metal mite

    Rob Roy, Caribou, Juliet

    Steam Doug, That's beautiful equipment you have there! Congrat's! I started the drive wheels for the Juliet on the cnc mill. They are milled up from solid steel bar. Once the program is tweeked they were down to an hour and a half or so. Right now I'm tied up with a semi...
  8. metal mite

    Rob Roy, Caribou, Juliet

    Hi John, Seems every one i talk to at the train club has, had, or has drawings castings or one of those three. Virginia is a popular one too. thanks for your reply. kap
  9. metal mite

    Machining techniques for castings

    Here's a handy tool for working on castings, This is a mini wall caliper. It is used by woodworkers, pattern makers and machinists. This double ended caliper can measure the thickness of a casting to check the core location, or thickness to see if your cut will break out of the casting. We...
  10. metal mite

    Machining techniques for castings

    train wheels:
  11. metal mite

    Machining techniques for castings

    I usually set castings up to the areas that don't get machined. Then I go back and check the cores and machined areas to be sure they are properly placed and will clean up. On train wheels/flywheels setup to the cored spokes so they will run true and in balance. We used a surface gauge on a...
  12. metal mite

    Rob Roy, Caribou, Juliet

    I was poking around on the internet a couple of months ago and found DrJuz's channel on u-tube. I found it by searching Caribou Live Steam. I have had a Caribou locomotive sitting by the fireplace for thirty some years. DrJuz also has a Caribou on his channel, first one I ever saw besides...
  13. metal mite

    AXIS move just in one direction (+)

    Is there a limit switch stuck or shorted. in this case the machine will only move away from that Limit. swap your axis cables to see if the ptoblem Moves with the cable. This will indicate the problem is on the driver side rather than the motor. my ahha system does this sometimes but if i...
  14. metal mite

    What is the best value mill to cnc convert etc

    I agree, Full size is the way to go if you have the space. Like the Bridgeport in the background with the AHHA retrofit package. Mite
  15. metal mite

    Wanting to get started in CNC

    Sorry you gave up and "invested" in a TV. Home Shop Machinist, and other magazines have run lengthy articles on machine conversions. We all know about digital TV, thank you. I like the Engineering Disasters show on History. Enjoy yourself! and dream about what you could be making in your...
  16. metal mite

    Differential

    Wheels are tapered 2 degrees 50 minutes. Like a barrel rolling down a two railed ramp. kap
  17. metal mite

    Differential

    My 1/2 scale Terning Case Engine has a John Dear differential in it. The Quarter size has 5 home made bevel gears inset in the bull gear or a total of 18 home made gears. This engine was built from scrap in 1982 on a Logan 10" lathe, and Enco Mill drill. Boston gear has/had a good selection...
  18. metal mite

    Curved Flywheel Spokes

    I have seen locomotive, at least 1/8 scale drive wheels with cracked spokes. These were as I understand from cooling issues. Spokes on one side of the wheels had hair line cracks only one side. Later wheels were left in the mold longer to cool and came out perfect. The spokes being thinner...
  19. metal mite

    Steel or brass balls without a ball turner

    Here's the setup with a worn out file. Drill a hole thru the file with a carbide drill. mill a slot with a carbide mill for the stem. Grind the teeth off. And away you go. Kap
  20. metal mite

    Cabin Fever Expo 2009?

    I plan to be there on Saturday, and Sunday. Two other guys and I are splitting a table. We have a project going of two Diesel/Hydraulic locomotives. We'll have miscellaneous, train parts, Phase 2 machine tool accessories, and extra used tooling items. I'll try to have a couple steam pumps...
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