|T O P I C R E V I E W
||Posted - 12/11/2008 : 1:15:00 PM
This is the site detailing the construction of the Carrie Creek. The basic framing is simple box ladder frames modules screwed together sitting on a ledge board and contained with cleats. The peninsula sits on a couple of L-girders screwed to the ledge with legs. The shelves have legs angled back down to the baseboard.
Oops I see that I didn't put any measurements in if this is a problem i'll repost the pic.
Does anybody see anything wrong with the basic framing? There are 7 modules plus the liftout across the doorway.
|15 L A T E S T R E P L I E S (Newest First)
||Posted - 06/19/2013 : 6:05:29 PM
I really like this section of your layout. It's going to be really fun to watch trains snake through these S-curves.
||Posted - 06/19/2013 : 3:55:49 PM
Thanks for the tutorial, Phil. Scratchbuilding the bridge makes it fit naturally into the scene.
||Posted - 06/19/2013 : 3:05:01 PM
Cameron, I am happy that these bridges can inspire you. As for abutments, you need some sort of feel as to what the embankments are going to look like and decide what material would be used in this situation. My abutments on the trestle could be shorter in length and still be okay.
For you also KP, here are some pics and a short tutorial of the trestle and as you can see the right hand end is curved. After cutting the carboard to fit under the rails I drew the rails (I drew both sides of the rails) while holding the card tight against the bottom of the rails. Try not to distort them. Then with the drawing back at the work bench I laid out the bents and distance between being sure that the stringers stayed under the rails. I used as stringers (HO 11"X16") 1/8"X3/16" basswood. The taller the stringers are the more weight they hold. Your stringers are always straight between the bents. If you remember some of your math you are laying out chords to the arc of the track. The bents do not have to be equally spaced and they can be skewed even in opposite directions as long as the spans are not over long.
these two pic show the stringer assemby set under the rails with some ties and as you can see the rails kind of wander side to side over the stringers.
and I still have this 18"r trestle to build along with 12 more
If you guys have more questions ask away.
Later, bed time now,
||Posted - 06/18/2013 : 11:11:28 AM
Curves... me too, count me in as being really, really being interested in your thoughts.
||Posted - 06/18/2013 : 05:20:14 AM
Sort of a PS - Your abutments are first rate, trying to get a good handle on those.
Any hints for handling curves? Both bridges mentioned above have curves.
||Posted - 06/18/2013 : 05:16:05 AM
Your work continues to inspire. You asked about bridges on DGCCRR. Have 2 immediate needs at Forks Creek. Came up with decent (I think) Truss Bridge. The two bridges, on the Idaho Springs and Black Hawk sides, are where your work so interests me.
Think I'll use your pictures and techniques to motivate me to begin on them.
||Posted - 06/15/2013 : 7:39:07 PM
Rick, Thanks for the nice words. Tried to keep the straight sections as short as possible. There's a 3' stretch over in Hiddenbury though.
Mike, thanks also to you for looking in. I need a lot of bridges and don't want a bunch of same old trestles everywhere. Thought that this king post fit here. Glad you like the workmanship.
||Posted - 06/15/2013 : 09:14:39 AM
That's an amazing amount of engineering for a bridge that size! Excellent workmanship.
||Posted - 06/15/2013 : 09:04:10 AM
Looks real good to me Phil.
The areas you've applied the 'ground goop' to gives a good idea of what the contours of scenery base will look like.
I like the curves on your track layout.
||Posted - 06/15/2013 : 08:55:37 AM
Bob, Thanks for looking and the nudges to continue.
James, I'm sorry if I have sounded like this is a Colorado narrow gauge RR. This is a standard gauge short line set in the Ouachita Mts. of west central Arkansas.
Yes, these hair clamps are a lot stronger than they look to be. The temporary cross pieces are the same thickness as the ties. The abutments will fit back tight into their molded spots. Then when ready, I can slide the real stringers in place and slide the finished ties under the rail. I 'll then spike the rail down though the tie and hopefully into the stringer. I hope that there will not be any hump. I basically used the same techenique on the trestle and have no hump there.
||Posted - 06/15/2013 : 06:34:27 AM
I don't know Colorado narrow gauge very well, so I can't comment on the bridges and the setting; your craftsmanship is good. But I did see one thing: in your last picture from June 7, the clamps are bending the rails into a downward curve. When you put the abutments into their final location, put ties in place (temporarily if necessary) to make sure the bridge doesn't make a hump in the track.
||Posted - 06/15/2013 : 02:49:56 AM
Looking good Phil. Very nice progress.
||Posted - 06/15/2013 : 02:20:43 AM
Well, got rid of some of the bright blue, spread out some brown gound goop. Stuck the king post abutments in the gooey stuff with a piece of saran wrap between. After it set up for awhile removed all and letting it dry. Did the up stream side first and then the down side. Here are some pics of the down side after the press fit set up some. Oops, forgot to take pics of the step with the wrap.
a shot up stream showing distance covered.
and under the trestle
When all this is good and dry I can remove the temporary spacers and finish the abutments and glue inplace.
as it happens...
||Posted - 06/07/2013 : 6:57:12 PM
Applied some paint to the "concrete" abutments for the king post hopefully I came out with something close to concrete.
Temporary tacked some place holders for the stringers so that I can hold in place while working on the ground/rocks in the creek bed.
updates as they happen...
||Posted - 06/01/2013 : 5:29:17 PM
Here are a couple of pics of the smaller metel work for the king post bridge
Still need to trim it up a little more I think
and here is a pic of the first layer of paint/stain on the trestle. Not quite the correct colour, should be a little lighter and less red.
more as it happens....