Author Topic: Weekend Update 12/8/24  (Read 5926 times)

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Chris333

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Re: Weekend Update 12/8/24
« Reply #60 on: December 12, 2024, 03:51:54 PM »
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That is freakin' awesome!

Jim Starbuck

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Re: Weekend Update 12/8/24
« Reply #61 on: December 12, 2024, 05:14:11 PM »
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Not at all Jim -  this is fascinating stuff. I love your clean construction methods.  Thus stuff deserves to be presented in a separate thread in the forum's  scratch-building section.

Thanks Pete,
I could start a new build thread in the scratch build section.
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peteski

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Re: Weekend Update 12/8/24
« Reply #62 on: December 12, 2024, 06:37:13 PM »
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Thanks Pete,
I could start a new build thread in the scratch build section.

Please do Jim.
. . . 42 . . .

Dwight in Toronto

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Re: Weekend Update 12/8/24
« Reply #63 on: December 12, 2024, 07:11:32 PM »
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@Jim Starbuck  - always SO inspiring!

Just curious - how are the trucks attached to/retained by the frame/shell?

Jim Starbuck

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Re: Weekend Update 12/8/24
« Reply #64 on: December 12, 2024, 11:27:57 PM »
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@Jim Starbuck  - always SO inspiring!

Just curious - how are the trucks attached to/retained by the frame/shell?

I glued small pieces of styrene square stock to the sides of the slot in the chassis then with a half round file made a crescent shape that allows the truck to pivot. Then the trucks snapped in between the styrene strips when inserted from inboard. There’s just enough of the truck tabs left to hold the truck in after filing them shorter to fit inside the narrow hood.
This is what needs to be reworked though as the trucks unsnap front to back when running. I’m going to make a wafer of .020” styrene with a hole big enough for the gear tower to pivot ( it doesn’t require hardly anything) an
then file keyhole slots so the trucks can be inserted upwards into the styrene then turned to engage the worm and what’s left of the truck tabs. I’ve only got about .045” total to work with between the truck pivoting, the tabs fitting inside the shell and the truck falling out.
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tehachapifan

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Re: Weekend Update 12/8/24
« Reply #65 on: December 12, 2024, 11:58:03 PM »
+1
Great looking build, Jim! :o

Dwight in Toronto

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Re: Weekend Update 12/8/24
« Reply #66 on: December 13, 2024, 07:38:57 AM »
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I glued small pieces of styrene square stock to the sides of the slot in the chassis then with a half round file made a crescent shape that allows the truck to pivot. Then the trucks snapped in between the styrene strips when inserted from inboard. There’s just enough of the truck tabs left to hold the truck in after filing them shorter to fit inside the narrow hood.
This is what needs to be reworked though as the trucks unsnap front to back when running. I’m going to make a wafer of .020” styrene with a hole big enough for the gear tower to pivot ( it doesn’t require hardly anything) an
then file keyhole slots so the trucks can be inserted upwards into the styrene then turned to engage the worm and what’s left of the truck tabs. I’ve only got about .045” total to work with between the truck pivoting, the tabs fitting inside the shell and the truck falling out.

Ok, thanks - interesting.
Hmmmm … Jim, maybe this aspect of the build is deserving of a short photo tutorial of its own?
I, for one, would find it of value.

peteski

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Re: Weekend Update 12/8/24
« Reply #67 on: December 13, 2024, 08:23:41 AM »
+2
Ok, thanks - interesting.
Hmmmm … Jim, maybe this aspect of the build is deserving of a short photo tutorial of its own?
I, for one, would find it of value.

Jim already started a build thread in the scratchbuilding section: https://www.therailwire.net/forum/index.php?topic=58927.0
Hopefully he will post this info and other updates there.
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