Search found 104 matches

by Comstock-Friend
Sun Aug 12, 2018 3:24 pm
Forum: Live Steam
Topic: New Year.....New project
Replies: 38
Views: 5551

Re: New Year.....New project

"I made the slots slightly oversize to allow one box to raise up a bit without binding, only about .010" as one journal box isn't going to move much more than it's mate." Thanks Jack; we'll go with the .010" clearance. I can't see a situation where one box is all the way up and the other all the wa...
by Comstock-Friend
Wed Aug 01, 2018 5:54 pm
Forum: Live Steam
Topic: New Year.....New project
Replies: 38
Views: 5551

Re: New Year.....New project

Jack, sorry to drag up this old thread, but I'm at the journal box stage of my D30. Prof Coventry just shows the jbox slots at the nominal frame width of 5/16". LBSC does the same (like on the 'Virginia'). Kozo's A3 is mostly straight, with a chamfer at the corners. Martin Evan has the slots radiuse...
by Comstock-Friend
Wed Jul 18, 2018 8:10 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: Bridgeport s/n BH-663 with M-1998 Head
Replies: 0
Views: 404

Bridgeport s/n BH-663 with M-1998 Head

Yup, the 663rd BP built, early 1941 (1941 started with BH-657). B&S #7 spindle, short table, 1/2 HP 115/230 single phase GE motor (I believe the motor is toast). Zero hours on brand new professionally installed class 7 spindle bearings (Studwells in Sun Valley). Missing quill skirt. Looking for good...
by Comstock-Friend
Thu Jun 21, 2018 6:59 pm
Forum: Live Steam
Topic: Moving
Replies: 4
Views: 1433

Re: Moving

From no worry about rust to actively fighting it!

Seems my family is migrating there too. Son on the Columbia at Cathlamet, Sister in Port Townsend...

Good luck with the move.

John
by Comstock-Friend
Wed Jun 20, 2018 5:38 pm
Forum: Live Steam Marketplace
Topic: Free Car Drawings
Replies: 4
Views: 1245

Re: Free Car Drawings

Thanks! A bit too new for me, but nice...

John
by Comstock-Friend
Mon Jun 04, 2018 8:13 pm
Forum: Live Steam
Topic: Eccentric Engineer Announcement - Small Scale Injectors in stock!
Replies: 26
Views: 5767

Re: Eccentric Engineer Announcement - Small Scale Injectors in stock!

Anthony,

Received the small injector today, quick delivery and looks GREAT!

John
by Comstock-Friend
Wed May 30, 2018 6:38 pm
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 84
Views: 8975

Re: Stainless steel boiler/exchanger?

Sftyvlv wrote:
Wed May 30, 2018 5:55 pm
Comstock. Could not carbide precip be a factor as well even with austenitic and/or low carbon content on fireside surfaces?
T321H titanium stabilized to prevent carbide precip...

John
by Comstock-Friend
Wed May 30, 2018 4:56 pm
Forum: Live Steam
Topic: Nuby question
Replies: 9
Views: 1372

Re: Nuby question

There is dust that blows in from the field behind my shop, so I cover my machines with canvas when not in use. I find that old linen bed sheets make good machine covers (my wife has given me quite a few!). Even in SoCal my machines will acquire surface rust if left uncovered for awhile. If I'm not ...
by Comstock-Friend
Wed May 30, 2018 4:46 pm
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 84
Views: 8975

Re: Stainless steel boiler/exchanger?

As already been mentioned ss is no good for boilers because of the metallurgical problems that accompany it. Having said that. It is used in in UNFIRED pressure vessels and process piping. Provided it doesnt reach the temp at which carbide precipitation occurs its all good. Fireside of heating surf...
by Comstock-Friend
Wed May 30, 2018 4:24 pm
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 84
Views: 8975

Re: Stainless steel boiler/exchanger?

Stainless steels also do not transfer heat very well through them, so making your tubes out of stainless would likely make your boiler not steam as well. this is also why you wouldn't make a heat exchanger or feedwater heater out of stainless. As I noted before, Doug (Alkire) in 'So you want to Bui...
by Comstock-Friend
Thu Apr 19, 2018 1:21 pm
Forum: Lathes
Topic: 5C Collet Racks from the Tormach
Replies: 5
Views: 1034

Re: 5C Collet Racks from the Tormach

I'll monitor the rust situation. I didn't bother to Google rust and MDF, hope all will stay good...

John
by Comstock-Friend
Fri Apr 13, 2018 3:50 pm
Forum: Lathes
Topic: 5C Collet Racks from the Tormach
Replies: 5
Views: 1034

5C Collet Racks from the Tormach

Made these 5C collet racks to fit the drawer of my Enco 12" bench lathe. As it has a threaded spindle nose, it's my go to lathe for collet work. The 13" South Bend has a D1-4 spindle and thus more suitable for chuck work, but as the internal nose of both of them is the same, the SB can play with col...