Search found 1028 matches

by Carrdo
Wed Mar 20, 2019 12:50 pm
Forum: Live Steam
Topic: Women in the hobby?
Replies: 47
Views: 1305

Re: Women in the hobby?

Basic psychology.

Men are interested in things.

Women are interested in people.
by Carrdo
Wed Jan 30, 2019 5:33 am
Forum: Live Steam
Topic: silver soldering steel to steel
Replies: 34
Views: 3796

Re: silver soldering steel to steel

Mostly, It is all about the lead content of the steel - peroid. The higher it is, the more difficult it is to silver solder. Not impossible, but much more difficult particulary if the lead content is > 2%. Mild (low carbon) free machining steel has a lot of lead (6-8%), as do many cold rolled steels...
by Carrdo
Tue Jan 29, 2019 2:32 am
Forum: Build Log
Topic: 3/4" Scale J1e
Replies: 49
Views: 5467

Re: 3/4" Scale J1e

The front drop coupler fulcrum.
by Carrdo
Sat Dec 29, 2018 10:06 pm
Forum: Live Steam
Topic: Union Pacific Big Boy in 3/4 Inch Scale
Replies: 114
Views: 37241

Re: Union Pacific Big Boy in 3/4 Inch Scale

Ladies and gentlemen, It is a lot more tricky than what Richard is telling you. For example, as one cuts deeper into the part as the 4th axis rotates the part, the ribs will come out tapered (because the rib edges are rotating radially in this case) unless one does some program trickery to reconfigu...
by Carrdo
Fri Dec 28, 2018 10:21 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

Making another fixture I really didn't want to make but.... Every time I turn around there is something new to do. I wanted to press off the existing wheels on the lead truck axles to machine the top of the axleboxes for the ends of the equalizers. I have an arbor press for this and for many other t...
by Carrdo
Fri Dec 21, 2018 4:26 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

Two additional photos.

Everything looks good but I am not out of the woods yet.
by Carrdo
Fri Dec 21, 2018 4:21 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

The swaging operation. The first photo shows how an equalizer end was set up and aligned in the swaging fixture with a piece of masking tape. Crude but effective. There was a scribed layout line on the equalizer located 1/8" beyond the drilled holes in the equalizers for the leaf spring end hangers ...
by Carrdo
Tue Dec 18, 2018 6:33 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

A photo of why the equalizer ends now have to be swaged 1/16" inwards. The leaf spring/hanger arm assembly on the Josslin Hudson is 1/8" wider than on the Langworthy Hudson due to the different design of the leaf spring hanger arms (in both designs, the leaf springs are the same width at 3/8"). This...
by Carrdo
Tue Dec 18, 2018 6:02 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

The equalizer swaging fixture to make the 1/16" offset bends on the ends of each equalizer. It is both simple and tricky at the same time as one has to precisely align each equalizer in the fixture and then reverse the second, opposite equalizer in it to make the opposite bend (also must be precisel...
by Carrdo
Tue Dec 18, 2018 5:34 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

Finishing the equalizer profile. The most difficult operation was fly cutting the equalizer inner radii. As the sweep of the fly cutter was quite large (13/16" radius), the ends of the equalizer bundle had to be set out a long way from each end of the mill vise jaws and had to be independently suppo...
by Carrdo
Mon Dec 17, 2018 11:06 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

Just sailing along.
by Carrdo
Mon Dec 17, 2018 3:12 pm
Forum: Build Log
Topic: A Real Dirty Job
Replies: 73
Views: 19707

Re: A Real Dirty Job

Further along.