Search found 773 matches

by RET
Sun Aug 12, 2018 7:03 pm
Forum: Live Steam
Topic: steam lines to cylinders
Replies: 6
Views: 1387

Re: steam lines to cylinders

Hi, When I did the Boston & Albany smokebox, I spent quite a bit of time trying to get the best steam pipe alignment I could so I would be able to use 303 gun cleaning brushes on the flues and tubes. The Boston & Albany is 3 1/2" gauge. Now if you are able to access the tubes and flues easily, it fo...
by RET
Sun Aug 05, 2018 10:49 am
Forum: General Discussion
Topic: Crowned pulleys
Replies: 26
Views: 4064

Re: Crowned pulleys

Hi Mr. Ron, Yes it definitely would apply to sanding belts. Remember in my post where I said the crown "steers" the belt to the center of the pulley. With larger installations you can see this happening if you watch how the belt approaches and comes onto the crowned pulley. When the belt is off cent...
by RET
Sun Aug 05, 2018 12:11 am
Forum: General Discussion
Topic: Crowned pulleys
Replies: 26
Views: 4064

Re: Crowned pulleys

Hi,

Adding to the above post, if there are multiple pulleys, only one or at the most two of them need to be crowned, but there should be at least 135 degrees or preferably 180 degrees of "wrap" on those pulleys for good control.

Richard Trounce.
by RET
Sat Aug 04, 2018 11:36 pm
Forum: General Discussion
Topic: Crowned pulleys
Replies: 26
Views: 4064

Re: Crowned pulleys

Hi, For flat belt drives, if it is a two pulley setup, one pulley should be flat and the other crowned. Both pulleys can be crowned, but it usually works better with just one. The amount of crown depends on the width of the belt. If it is a two foot wide conveyor belt, the crown should be about 1/4"...
by RET
Sat Aug 04, 2018 1:08 pm
Forum: Home Shop CNC
Topic: Backlash on a CNC mill
Replies: 5
Views: 1758

Re: Backlash on a CNC mill

Hi, To be really useful and capable of making accurate parts, you need zero (absolutely none!) backlash on all 3 axes of a CNC mill (and if you happen to have more than 3 axes, you need to have the extra axes treated the same way). The machine also needs to be heavier than you would think necessary ...
by RET
Wed Jul 25, 2018 11:48 pm
Forum: Live Steam
Topic: Milk of Magnesia as Anti-Sieze?
Replies: 41
Views: 6623

Re: Milk of Magnesia as Anti-Sieze?

Hi, Before the days of ball and roller bearing dead centers, it was normal practice to use white lead mixed with a little oil to lubricate the tailstock center. Using it so that you could remove screws years down the road would also make perfect sense in the days before Neverseez and other such comp...
by RET
Mon Jul 23, 2018 7:51 pm
Forum: Live Steam
Topic: Could I get an idea on what different sized mills can hog?
Replies: 13
Views: 2084

Re: Could I get an idea on what different sized mills can hog?

Hi shld, As Fender says, try a roughing end mill. You'll be surprised how well it works. Some time ago, I bought a 1" dia. roughing mill and I was amazed by the cuts I could take without loading down the machine. In addition, the cutter even gave a half way decent finish. I don't use it very often, ...
by RET
Wed Jul 11, 2018 8:31 am
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 3682

Re: Rapid Steam Pressure Loss

Hi, From what you say, it sounds as though you are getting way too much draft when running. "Stack talk" may sound nice, but even in a coal burner it wastes power. Opening up the blast nozzle until the ""stack talk" almost disappears is the way to go. I haven't run propane myself (just coal), but ev...
by RET
Fri Jun 08, 2018 11:32 am
Forum: Live Steam
Topic: Formed cab roof angle 16 ga. steel
Replies: 19
Views: 4223

Re: Formed cab roof angle 16 ga. steel

Hi Dave, The method you use is going to depend entirely on how sharp you want the outside corner of the angle to be. If a 1/16" radius is acceptable, then cutting the angle from square tube will work, if you want to wind up with a sharp corner like real angle, then you will have to mill the angle fr...
by RET
Sun Jun 03, 2018 11:54 am
Forum: Live Steam
Topic: Steam turbine generator
Replies: 91
Views: 18737

Re: Steam turbine generator

Hi, This is an old thread on turbogenerators, but recently I talked to Bill Huxhold about the ones he made and I have some important advice to pass on to anyone who may have one of his units. Bill designed his turbogenerators to run at about 40,000 rpm. using 40 psi. steam pressure. That is why each...
by RET
Mon May 14, 2018 8:41 pm
Forum: Live Steam
Topic: Two Silver Soldering Questions
Replies: 37
Views: 6206

Re: Two Silver Soldering Questions

Hi, I started off using the white flux a long time ago, but I found that if I overheated it, it burned and then it didn't work any more. I found that the black flux wouldn't burn and was better for large jobs like silver soldering a flat car frame together. For the truck frame you will probably need...
by RET
Thu May 10, 2018 9:45 am
Forum: Live Steam
Topic: Union copper tube to 1/4-40 MTP ?
Replies: 24
Views: 3019

Re: Union copper tube to 1/4-40 MTP ?

Hi Dianne, My cross slide was the same as yours so a long time ago I took the carriage off, made my own dovetail cutter from a broken tractor drawbar & put the carriage on the mill. I took just enough off the ends so it was straight across. When I reassembled it, I used Tempur tape (1/2" wide teflon...