Author Topic: scaletrains.com C39-8  (Read 2867 times)

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spookshow

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scaletrains.com C39-8
« on: January 25, 2019, 05:04:49 AM »
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I've been running mine for the last couple of days and I've noticed that it's just a bit jittery/lurchy (particularly evident at slower speeds). It seems to be more of a mechanical issue (like a bind or something) than an electrical one. I did try doing a CV54 auto-tune, but that didn't change anything. Anybody else have one of these and are you seeing the same thing?

Thanks,
-Mark

C855B

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Re: scaletrains.com C39-8
« Reply #1 on: January 25, 2019, 08:41:45 AM »
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Just a SWAG, but you might recall the same issue with the Turbines. In that case it was the armature ever-so-slightly binding in the motor saddle. Déjà vu?
...mike

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spookshow

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Re: scaletrains.com C39-8
« Reply #2 on: January 25, 2019, 08:49:30 AM »
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I guess it's time to open it up since I need get some pictures anyway. FWIW, CV54 took care of the lurching problems I had with the turbine.

-Mark

bman

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Re: scaletrains.com C39-8
« Reply #3 on: January 25, 2019, 08:56:00 AM »
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My DC version arrived yesterday. Ran it 'round the layout for a bit in both directions to break it in. Mine starts out nice and smooth. But again that's on DC and not DCC. Hopefully the same CV adjustment will solve it like it did on the turbine for ya.

C855B

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Re: scaletrains.com C39-8
« Reply #4 on: January 25, 2019, 09:05:25 AM »
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For quick reference, here's what Ron @u18b found with the Turbine: https://www.therailwire.net/forum/index.php?topic=41020.msg516280#msg516280
...mike

http://www.gibboncozadandwestern.com

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spookshow

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Re: scaletrains.com C39-8
« Reply #5 on: January 25, 2019, 09:26:28 AM »
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The STC turbines are totally different animals. These are more like the GEVo's -



I checked the screws and they didn't seem overly tight. Guess I'll just give it a little lube and let it run for a few days and see what happens.

-Mark

tehachapifan

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Re: scaletrains.com C39-8
« Reply #6 on: January 25, 2019, 12:44:19 PM »
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Wait, people have these in-hand? How'd I miss that?
Russ

jargonlet

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Re: scaletrains.com C39-8
« Reply #7 on: January 25, 2019, 12:56:37 PM »
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I got mine last night. I didn’t get to run it much as I had to clean my track. I hadn’t run anything on the layout since before November. After cleaning mine ran well. I didn’t have any jerkiness or anything with mine even at low speeds.

jargonlet

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Re: scaletrains.com C39-8
« Reply #8 on: January 25, 2019, 01:02:05 PM »
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Wait, people have these in-hand? How'd I miss that?
I got an email Friday saying that they were in stock with a link to pay.

tehachapifan

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Re: scaletrains.com C39-8
« Reply #9 on: January 25, 2019, 01:10:35 PM »
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I got an email Friday saying that they were in stock with a link to pay.

OK, thanks! I don't have one on order but I was a bit thrown off with the initial postings which, to me, sort of read like these things have already been out for a while.

Russ

spookshow

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Re: scaletrains.com C39-8
« Reply #10 on: January 25, 2019, 01:46:58 PM »
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I ordered mine directly from STC - got it a couple of days ago.

-Mark

unittrain

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Re: scaletrains.com C39-8
« Reply #11 on: January 25, 2019, 02:43:15 PM »
+1
Got mine today haven't test ran it yet, but these excellent models bar none. I went out of era for these as I model the late 60s to late 70s, but like the boxy look of the early dash 8s 8) [ Guests cannot view attachments ]

Ed Kapuscinski

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Re: scaletrains.com C39-8
« Reply #12 on: January 25, 2019, 03:22:21 PM »
+1
Is that its box?

unittrain

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Re: scaletrains.com C39-8
« Reply #13 on: January 25, 2019, 03:42:34 PM »
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Yeah it's got a large box.

cgw

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Re: scaletrains.com C39-8
« Reply #14 on: January 25, 2019, 05:29:51 PM »
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I have received mine directly from scaled trains.   they are now on day 3 running around a test circle of kato unitrack and have not missed a beat.    been running them at a speed setting of 2 out of 28    slow good performance   plan to keep running them till Sunday   volume need to be turned down a tad.   but so far I am pleased.   The high end 28  speed step setting they are like slot cars.  When I am done with the break in run I am going tune the high end speed to be more prototypical.