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Thread: Weekend Update (17th May 2019)

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    Post Weekend Update (17th May 2019)

    Please update us on the progress you have made on your MRR projects this week (commencing: 17th May 2019).

    This weekly thread is to post little snippets about your layout/project progress.
    This is not be a substitute for your layout build thread, but just a mini update on what you got done for the week.

    You can link from your layout build thread to your posts in this thread as a part of a more extensive post there, or visa-versa (post to your build thread and link to that post when contributing to this thread.

    Click on a post's #number (right-hand end of the post header) to get the URL to that particular post in your browsers address bar.
    Copy and paste this as needed.

    So, fellow nSn'ers, what have you been up to this week?

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    A little more progress on Krause Feeds this week -









    -Mark
    Last edited by Spookshow; 18th May 2019 at 07:38 AM.


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    Don't have pictures yet, but I hopefully accomplished something today. I have an Atlas GP-7 undec shell that is missing the walkway and handrails. Finally got in contact with Atlas' Parts folks, and after sending them pictures and a number of phone calls hopefully the parts I need are in the mail. This shell will be painted for the Midland Valley RR and probably numbered 151. Midland Valley only had four diesels, all GP-7's, numbered 151-154. Numbers 152 and 153 were wrecked and returned to EMD for rebuild and were classified at GP-7M's. I can't find any pictures with enough detail to figure out exactly how those GP-7M's differed from normal GP-7's.

    Anyway I get the parts and that shell joins the paint shop line. Takes it place behind another GP-7 being painted into ATSF Pin Stripes.

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    Mark - that came out really nice. Those gas pumps really look prototypical.

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    @Spookshow
    Lookin' damn fine. The posters came out really well. Now get that bike sorted
    Thanks, Tom

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    Quote Originally Posted by tomcook View Post
    Now get that bike sorted
    Ugh, don't remind me - it got sold back in 2011 when I jumped into my Trans Am money pit



    -Mark

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    The building is looking great Mark.

    Robert

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    I am going to start demolishing the Triple U RR unplanned unbuilt and underfunded.

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    A little bit of Pacific Electric freight action
    Modeling the Pacific Electric Playa Desnuda Branch in N Scale

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    Quote Originally Posted by Spookshow View Post
    Ugh, don't remind me - it got sold back in 2011 when I jumped into my Trans Am money pit
    Big Ouch. Bike over Trans Am anyday. Sorry for your loss
    Thanks, Tom

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    Quote Originally Posted by Bremner View Post
    A little bit of Pacific Electric freight action
    That is one cool, original layout
    Thanks, Tom

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    Quote Originally Posted by tomcook View Post
    That is one cool, original layout
    Thank you very much
    Modeling the Pacific Electric Playa Desnuda Branch in N Scale

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    Modeling the Pacific Electric Playa Desnuda Branch in N Scale

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    Modeling the Pacific Electric Playa Desnuda Branch in N Scale

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    Here's what I did this weekend:


    It's a finger, yes. What does a finger have to do with it you might ask? It's specifically my left index finger for clarity's sake, but I'm digressing.

    Look very closely and you may see a tiny black dot. It's hard for my phone's camera to focus that close, but trust me, it's there.

    Have you correctly guessed what is shown in the photo? If not, read below for the answer. Read below if you DO know the answer for an important message from our sponsor, Dumb Things You Can Do To Your Finger Inc.

    .|.
    .|.
    .|.
    .|.
    .|.
    \/

    I have some cars rocking while going through a turnout and figured if I ran my finger down the rails maybe I could feel some misalignment in the rail. I felt SOMETHING alright, but it wasn't a misalignment. The DCC voltage decided my finger was the path of least resistance from the frog to the diverging rail and that black dot is an electrical burn.

    For the record I ALWAYS turn off the power before touching the rail because you never know; well... there was this ONE time. I actually thought the power was off or my finger would have been off; off of the rails that is. I didn't feel much of a shock, just a searing burn in my finger like I got poked with a red hot needle.

    Just wanted to share this as a lesson learned so you all can benefit from my mistake. Next time I'll be sure to double check the power IS off.
    Bronman - "Trains and Legos... you can't have too many of them."

    My Layout Build Thread - The Spokane & Eastern Washington
    - Featuring motive power by Burlington Northern, Union Pacific, Canadian Pacific, Montana Rail Link and Amtrak in Spokane and Eastern Washington in the mid-1990's.
    _________________________________________________
    "That's what she said!" - Michael Scott, The Office

    "That's just dumb, D-U-M, dumb." - Me.

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    Really? What amount of voltage are you running?
    Cheers!
    Gordon
    Rheinland Bayern Bahn
    http://www.nscale.net/forums/showthr...4-x-9-5-layout

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    Quote Originally Posted by el Gato Gordo View Post
    Really? What amount of voltage are you running?
    I have the same thought. Is there enough current in DCC to make a quick burn like that? I know DCC systems can be up to 8A (nominal 12V) or so but to get an INSTANT burn like that makes me curious. I'm not saying I don't believe you as you have the picture to prove it. I just want to understand the science behind it. Digitrax has always said to use the "Quarter Test" to check if the breaker shuts down the command station. I've done that many times and I would expect a spark if DCC has that much power.

    I wonder if it was metal sliver that punctured your skin and now body fluid will conduct much more/better than relatively dry skin. If you lay a finger across the tracks on a live DCC system, you won't get any burns. Thus my theory that skin was punctured.

    On a separate note, I'm glad it was nothing major!

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    I think the key factor is the short distance between the frog and the rail leading into it. I bridged the gap cut to isolate the powered frog with my finger. The voltage is constant so the current is dependent on the resistance.

    As we know, skin CAN conduct electricity, although poorly. The smaller the distance the lower the resistance and the higher the current IF it passes through. It is a very small burn, so I'm assuming given the extremely short distance a large amount of current was able to pass across the gap causing the burn.

    I'm not sure if it was a low enough current because of the resistance in my finger that it didn't trip the circuit breaker (i.e. it may have just "looked" like a normal load) or if it is because I haven't installed enough feeders and the current is traveling too far to trip it (i.e. won't pass the quarter test). I'm in the process of getting the turnout I was running my finger along dialed in before permanently setting it in place. More feeders will go in after. I better try the quarter test before I run a loco on the turnout again before I fry a decoder or melt some loco plastic.

    Anyway, I just want to reiterate caution when touching our track. We have all done it and it IS mostly safe, but it is also potentially 5-8 amps of current at 9-14 volts which can be fatal. That little black dot is a really small, but really big, reminder to double check that power is off before doing any work on the track.
    Bronman - "Trains and Legos... you can't have too many of them."

    My Layout Build Thread - The Spokane & Eastern Washington
    - Featuring motive power by Burlington Northern, Union Pacific, Canadian Pacific, Montana Rail Link and Amtrak in Spokane and Eastern Washington in the mid-1990's.
    _________________________________________________
    "That's what she said!" - Michael Scott, The Office

    "That's just dumb, D-U-M, dumb." - Me.

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    I painted a 1940 Ford Coupe
    Modeling the Pacific Electric Playa Desnuda Branch in N Scale

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    Finally got the ABA set done electrically.
    Had to go back and fix a light bleed issue, 3 coats of canopy glue and a small piece of aluminum foil over each number light later

    SP & 53
    Daylight and Overnight

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