Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Harold Downey

Pages: 1 2 3 [4] 5 6 ... 11
Work and Events / Re: Coach 9 - Official Work Thread
« on: June 03, 2019, 09:45:24 AM »
Now some patterns for the coach.  These are all the castings required for the base frame.

From left to right:  Three core boxes and the pattern for the bolster truss rod casting, the center plate, the body support casting, and the queen post casting.

Work and Events / Re: Coach 9 - Official Work Thread
« on: June 03, 2019, 09:37:45 AM »
This is the pattern for the seat back portion of the mechanism.

Top view:

Bottom view (this is the reverse side of the same mold board):

The bottom links, that attach to the seat frames.  This is the reverse side of the links on the actual mechanisms in the picture.

And the last piece, the armrest.   I made two patterns and one corebox. 

Work and Events / Re: Coach 9 - Official Work Thread
« on: June 02, 2019, 09:15:43 PM »
Hey all (or should I say y'all, being from Texas), I am going to post a series of updates on what I've been doing for the Coach 9 project.  I've got a lot to cover, so this may take me a few days to post it all. 

First an update on the seat patterns.   There are eight patterns required to make each seat, and I have completed all of them.  You've seen the main aisle side frame previously.

This is the finished window side frame pattern, top view:

Here is the bottom side core box, side by side with the bottom view of the original casting:

The seat back flip mechanism is a four-bar linkage.  Three of the links are the same for aisle and window side, with the base link that attaches to the seat frame being different. 

This is the pattern for one of the long links.  I did this on a mold board in a 2-up configuration, to help with production costs.  There are 2 per seat, and 24 seats per coach.  The other reason for a mold board, is that the pattern is split in the middle and each half is only 5/32" thick.   

First the top view of the link:

Then this is the bottom of the same pattern.  It looks like two pieces, but they are really for one link.

Work and Events / Re: B&SR #34 flat car - Official Work Thread
« on: April 13, 2019, 11:22:47 PM »
All of our wheels are 20".

Two Footers outside of the US / Re: AMTP in Pithiviers, France
« on: March 15, 2019, 10:36:52 AM »
Let me try:   This is a two level pun.  First, the correct phrase is "wrack and ruin", where the word wrack is an old english word that has the same meaning as wreck.  A "rack" is a linear gear used typically with inclined cog railways that can't rely on wheel friction or adhesion

Museum Discussion / Re: Useful Stuff on eBay
« on: February 07, 2019, 01:58:11 PM »
I don't think I have seen that one either.  I looked in detail at all the turntable shots I could find when I was working on the design for ours.   

A couple interesting items to note from this one:  There appears to be no outer rail, it is just supported on blocks of wood.  If the truss rods are tensioned enough, the outer part of the turntable won't touch until the engine comes on, which is essentially how ours is set up.   Also note the tilting of the fourth cross beam from the end on the underside - that is due to the attachment of the inner truss rod.  All of the original turntables had that problem.  I deviated from the originals with a cast anchor for that truss rod, due to this problem.

Museum Discussion / Re: Best Phone Service for Sheepscot
« on: October 19, 2018, 11:05:07 AM »
There is definitely NO AT&T service at Sheepscot, and very faint signal at TOM.   

Work and Events / Re: Mountain Extension - Official Work Thread
« on: September 23, 2018, 08:19:43 PM »
I hate to be the person from away asking questions, but I can't help myself...    Will we need to re-survey and have centerline stakes put in to define the track location for FWW track build?
I assume the answer is "of course."    The amount of work required to prep for this FWW is probably nearly overwhelming, and I grok that.   The progress on the Mountain Extension is really phenomenal.   So much behind the scenes happens in addition to what we see here. 


Work and Events / Re: Trout Brook Bridge - Official Work Thread
« on: September 20, 2018, 11:34:40 AM »
The National Society for the Preservation of Covered Bridges had an article about "our" bridge in their summer newsletter.

Work and Events / Re: Trout Brook Bridge - Official Work Thread
« on: September 07, 2018, 09:20:43 PM »
Thanks for the pix, Brendan.  Who was the brave soul that drove the excavator?   Looks like your hat.

Whimsical Weirdness and Foolery / Re: OMG! You can get Moxie in PA......
« on: September 01, 2018, 09:50:47 AM »
I just heard a segment about Moxie on NPR:

For the railroad connection:  they interviewed people in the Railroad Pub in Lisbon Falls.

Work and Events / Re: Coach 9 - Official Work Thread
« on: August 17, 2018, 09:03:42 PM »
And here is the final front side pattern.   I added up my hours ... 230 so far for this pattern.  About a third of the time was measuring and creating drawings to work from. 

There are eight total patterns needed for the seat:
Aisle side frame - this pattern
Window-side frame - done - see earlier in this discussion
Two link arms for the seat back
Plate for the seat back attachment
Two different bottom plates for the linkage

6 more to go...

Work and Events / Re: Coach 9 - Official Work Thread
« on: August 17, 2018, 08:59:05 PM »
Here is the final pattern of the back side.  It is complete other than finish (polyurethane).   I put the actual seat frame next to it for comparison. 

Work and Events / Re: Trout Brook Bridge - Official Work Thread
« on: August 12, 2018, 11:14:30 AM »
I believe the green color is evidence of treatment.  Wood is not naturally that color (except poplar).

Museum Discussion / Re: Google Maps
« on: August 03, 2018, 09:12:11 PM »
I am pretty sure this is right around spring work weekend.  Fred is taking apart the old handicap ramp, and there is wood stacked by the new north stairway. 

Pages: 1 2 3 [4] 5 6 ... 11