Search found 169 matches

by tetramachine
Sat Jan 16, 2021 5:13 pm
Forum: Live Steam Marketplace
Topic: 1" scale steam dome. Turret
Replies: 15
Views: 4606

Re: 1" scale steam dome. Turret

I have found a foundry now, working on the patterns cost. Looking at having ten sets made.
by tetramachine
Thu Jan 07, 2021 8:17 pm
Forum: Live Steam
Topic: Could I get help picking a set of reamers?
Replies: 27
Views: 1621

Re: Could I get help picking a set of reamers?

For small sizes I use a groove gage, .200 to 1.200 other to 1.00, on the same gage, also have 3 point expanding bore gage starting at 3/16. Lastly ball gages, like the telescoping gauges, but with a split ball.
by tetramachine
Wed Jan 06, 2021 12:46 pm
Forum: Live Steam
Topic: Could I get help picking a set of reamers?
Replies: 27
Views: 1621

Re: Could I get help picking a set of reamers?

I bought a set over over/under from 1/8 to 1/2. Chinese, work well for last 15 years. Larger sizes ebay a name brand, Morse, Regal, others. When making drivers use reamers for the bores. and on size. You need to have a .625 hole to accept a 5/8 guide when broaching the keyways, a .6235 hole will not...
by tetramachine
Sun Jan 03, 2021 8:42 pm
Forum: Live Steam Marketplace
Topic: Eaton 6 Hydrostatic transmission $50
Replies: 4
Views: 1602

Re: Eaton 6 Hydrostatic transmission $50

I have worked on these Eaton units, fairly simple disassembly/assembly. BUT except for seals there is zero parts available. Some internal parts like the levers can be made, the pistons are just steel bearing balls. And while supposedly fitted to each bore, after a year of use they fit any bore. If r...
by tetramachine
Fri Jan 01, 2021 12:45 pm
Forum: Live Steam
Topic: Could I get tips on dumpster diving for materials for your build?
Replies: 52
Views: 3355

Re: Could I get tips on dumpster diving for materials for your build?

I have bought a lot of material from ebay. Drops, odd stuff and "stated known" alloy. Although it is often mystery metal, and fails to machine as well as its supposed alloy. Second choice is a company called Yarde Metal in CT, and NY. They have an online site that has a "drop zone" From them the all...
by tetramachine
Sat Nov 28, 2020 11:47 am
Forum: Live Steam
Topic: Exposed needle-bearings on inside of axle boxes
Replies: 26
Views: 4908

Re: Exposed needle-bearings on inside of axle boxes

I have two LE Pacifics. both have needle bearings running on HARDENED Races pressed onto the axle. One of the loco's Had worn out the bushings on each of the driving rods, the needle bearimgs were in fine shape except one which got rust from sitting a long time like 20 years. There are not seals on ...
by tetramachine
Fri Nov 27, 2020 3:12 pm
Forum: Live Steam
Topic: What do you think of this build video? Did he take a big risk?
Replies: 25
Views: 5961

Re: What do you think of this build video? Did he take a big risk?

The type of tap where the chips come out the top of the tap is called a "spiral Flute Tap". Very useful for deep holes, blind holes. There are forming taps, which deform the metal into threads. Fast like the spiral taps but NO chips, Great for blind holes, PITA materials like SS, use a forming tap.
by tetramachine
Thu Oct 29, 2020 8:52 pm
Forum: Live Steam
Topic: Pacific turn radius
Replies: 9
Views: 3158

Re: Pacific turn radius

My track is gauged about the same. The front truck was removed, and the lower edges of the links as well as the center post was killed to provide an additional 1/8 movement L & R. I then layed out a section of straight leading into a 10' section of 20 radius track. First pushed, then run on air, for...
by tetramachine
Wed Oct 28, 2020 10:08 am
Forum: Request For Services
Topic: Need mill work for academic research project in NJ
Replies: 13
Views: 12181

Re: Need mill work for academic research project in NJ

Its been two years since I built the Dice launcher. The Grad students had completed around 4000 dice toss's. That was July 2018. The next year a draft of results came out. Not surprising, the test showed what most everyone would have guessed. No matter how consistent the toss of the die is, once it ...
by tetramachine
Sat Oct 17, 2020 6:56 pm
Forum: Live Steam
Topic: Putting some grip (stippling) on an aluminium drive pulley.
Replies: 10
Views: 2984

Re: Putting some grip (stippling) on an aluminium drive pulley.

If it's a flat belt. I just would run a knurling tool across at face of it.
If a vee belt I would increase the size of both pulleys, to keep the ratio.
by tetramachine
Fri Oct 16, 2020 12:07 pm
Forum: Riding Scale Railroading
Topic: Key stock for axles and drivers?
Replies: 11
Views: 3386

Re: Key stock for axles and drivers?

Glenn, Setscrews are used to hold the wheel to the axle, Not in lieu of a broached keyway and key to transmit the power.
by tetramachine
Fri Oct 16, 2020 11:56 am
Forum: Riding Scale Railroading
Topic: Electric drive motor specs
Replies: 62
Views: 12493

Re: Electric drive motor specs

This is an interesting project. My chair has two 600W 3/4HP motors. The chair weight is just short of 200, and I add 150. At full speed of 6mph, any grade slows me down. A grade of 1:6 is a crawl, (And the wheelie bars are in full use.) Electronic speed controllers are great but at large amperage ne...