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Author Topic: Rowa 2-8-8-2 Y6b  (Read 732 times)

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Offline MistyEyedWanderer

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Rowa 2-8-8-2 Y6b
« on: March 02, 2019, 07:24:28 PM »
Rebuilding a Rowa 2-8-8-2 Y6b from two locomotives, using the best parts. 
Apparently quite rare models, the Zamac is still good forty years later.
One motor makes an impressive plume of smoke and shower of sparks in one direction and fails to run in the other. 
The good motor is a three pole, I intend to fit a Mashima 1620 with 1.5 mm shaft to match the original worm, it's a very close match to the original.

The shaft is too short on just one end but probably long enough overall if it could be moved.  I have seen videos of shaft replacement in cheap motors, securing it with cyano, I'm not so sure.
Don't want to trash a good motor, has anyone with experience tried this?     

Offline ntpntpntp

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Re: Rowa 2-8-8-2 Y6b
« Reply #1 on: March 02, 2019, 07:41:49 PM »
Shaft too short by how much? Is it something you could extend with a length of 1.5mm rod and a short piece of sleeve superglued/epoxied to make the joint? Are you saying the Mashima is a double-ended motor and you'll have to cut one shaft anyway?  Looking at spookshow's photos of the Y6B chassis it's a single ended motor with a jointed long shaft to power both drives?

Or maybe use one longer length of sleeve and ream out the worm so it fits over the sleeve?

Can you strip down and investigate the failing motor? Does it just need a service and brushes replacing or is it something more serious, eg. a shorting coil causing overheat and solder melting off the commutator connections maybe?
« Last Edit: March 02, 2019, 07:50:05 PM by ntpntpntp »
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline Railwaygun

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Re: Rowa 2-8-8-2 Y6b
« Reply #2 on: March 03, 2019, 01:52:21 AM »
This thread on motor replacement  may be helpful

https://www.ngaugeforum.co.uk/SMFN/index.php?topic=44523.0
« Last Edit: March 03, 2019, 01:54:13 AM by Railwaygun »
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Offline Webbo

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Re: Rowa 2-8-8-2 Y6b
« Reply #3 on: March 03, 2019, 04:16:33 AM »
Good to hear that someone else on this forum has a Rowa Y6b. I obtained mine new about 40 years ago, but it has not had many miles on it. For those who don't know what a Y6b is, here's mine in motion:



https://youtu.be/-Qwg8QS8FAg

Good luck with your repair, MistyEyedWanderer.

Webbo
« Last Edit: March 03, 2019, 01:09:38 PM by Railwaygun »

Offline Bealman

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Re: Rowa 2-8-8-2 Y6b
« Reply #4 on: March 03, 2019, 04:50:14 AM »
Got a bit of haulage power there, Ian!

If I'm not mistaken, that's a brass track cleaner behind it... and they ain't light!  :thumbsup:
Vision over visibility. Bono, U2.

Offline Webbo

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Re: Rowa 2-8-8-2 Y6b
« Reply #5 on: March 03, 2019, 05:11:43 AM »
Yes, it's a CMX. The Y6b didn't even slow down when I put it on the back.

Offline Graham

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Re: Rowa 2-8-8-2 Y6b
« Reply #6 on: March 03, 2019, 07:39:37 AM »
that is one very nice looking loco.

Offline ntpntpntp

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Re: Rowa 2-8-8-2 Y6b
« Reply #7 on: March 03, 2019, 10:16:47 AM »
Whenever I see the old Rowa or Rivarossi beasts come up on ebay I'm tempted as they're so impressive. Would never fit on my German layout though!
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline Rich_S

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Re: Rowa 2-8-8-2 Y6b
« Reply #8 on: March 08, 2019, 01:03:28 AM »
Good to hear that someone else on this forum has a Rowa Y6b. I obtained mine new about 40 years ago, but it has not had many miles on it. For those who don't know what a Y6b is, here's mine in motion:

Good luck with your repair, MistyEyedWanderer.

Webbo

Hi Webbo, Very nice USRA 2-8-8-2  :thumbsup:  Just a FYI, only the N&W 2-8-8-2's known as Y6b's. N&W also had a class Y6a with the same wheel arrangement. On the Southern Pacific the 2-8-8-2 were classified as MC-1.   

Did your Rowa 2-8-8-2 come equipped with a smoke unit?
 
Cheers,
Rich S.

Offline Webbo

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Re: Rowa 2-8-8-2 Y6b
« Reply #9 on: March 08, 2019, 04:13:21 AM »
Hi Rich

Yes I know that Y6b is not ATSF. Let's invoke Rule 1. In the early days of N scale the manufacturers made all sorts of mistakes like that. I also had a Minitrix K4 as an ATSF loco which is also wrong.
I think the smoke version of the Y6b came after mine.

Webbo

Offline Simon D.

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Re: Rowa 2-8-8-2 Y6b
« Reply #10 on: March 08, 2019, 03:54:52 PM »
The ATSF did own six ex Norfolk & Western Y’s (Y3’s I think) from about 1944 to 1948 and used them for helpers on Cajon pass and Raton pass. So this model is pretty protypical. Lifelike also did an awesome model but Walthers managed to lose the tooling apparently.

http://www.spookshow.net/loco/ll2882.html

The Rowa model is pretty good still.

http://www.spookshow.net/loco/riv2882.html

Offline bigmac

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Re: Rowa 2-8-8-2 Y6b
« Reply #11 on: March 08, 2019, 04:58:59 PM »
i had a N&W y6b back in the 70's--atlas,  which was rivarossi.  the motor was very similar to that in a peco jubilee.  i seem to recall the y6b had plastic valve gear--?
i used to be indecisive...but now i'm not so sure.

Offline Simon D.

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Re: Rowa 2-8-8-2 Y6b
« Reply #12 on: March 08, 2019, 05:26:33 PM »
Just checked mine - yes plastic.  Same model as the Rowa one - see the Spookshow link above.

Still looks good and runs well.

Offline Rich_S

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Re: Rowa 2-8-8-2 Y6b
« Reply #13 on: March 08, 2019, 10:57:11 PM »
The ATSF did own six ex Norfolk & Western Y’s (Y3’s I think) from about 1944 to 1948 and used them for helpers on Cajon pass and Raton pass. So this model is pretty protypical. Lifelike also did an awesome model but Walthers managed to lose the tooling apparently.

http://www.spookshow.net/loco/ll2882.html

The Rowa model is pretty good still.

http://www.spookshow.net/loco/riv2882.html


Hi Simon, Thank you for the additional information  :thumbsup:

Cheers,
Rich S.

Offline oscar

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Re: Rowa 2-8-8-2 Y6b
« Reply #14 on: March 09, 2019, 10:48:28 AM »
Rebuilding a Rowa 2-8-8-2 Y6b from two locomotives, using the best parts. 
Apparently quite rare models, the Zamac is still good forty years later.
One motor makes an impressive plume of smoke and shower of sparks in one direction and fails to run in the other. 
The good motor is a three pole, I intend to fit a Mashima 1620 with 1.5 mm shaft to match the original worm, it's a very close match to the original.

The shaft is too short on just one end but probably long enough overall if it could be moved.  I have seen videos of shaft replacement in cheap motors, securing it with cyano, I'm not so sure.
Don't want to trash a good motor, has anyone with experience tried this?   

I think I have the remains of one in my junk box. It ran when I put it away. I'll dig it out and see what's left. If it's any good to you, you can have it. :)

 

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