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MDC two-truck Shay

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  • Member since
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  • From: Olympia, WA
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Posted by gear-jammer on Saturday, January 30, 2010 8:53 AM

John,

We used the NWSL regearing kit.  I believe they have a regear kit for the 3-truck now.

Sue

Anything is possible if you do not know what you are talking about.

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Posted by tbdanny on Monday, January 25, 2010 3:56 AM

jeffers_mz

The mechanism has a "gear loop" in it.

Gears inside the loco turn the wheels, which turn the exterior gears which run the valve gear.

 

But isn't this the case in the Atlas N scale Shay as well?  That mechanism runs perfectly.  Is there any explanation as to why, out of two mechanisms with a gearing loop in them, one runs perfectly and one does not?

The Location: Forests of the Pacific Northwest, Oregon
The Year: 1948
The Scale: On30
The Blog: http://bvlcorr.tumblr.com

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Posted by John_PWH on Sunday, January 24, 2010 10:09 PM

I have both HO and HOn3 MDCs that need regearing.  Which regear kit did you use?

 

Thanks,

 JOhn K

 

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  • From: Philly
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Posted by trainboy414 on Friday, October 5, 2007 7:44 PM
 cacole wrote:

An entire book was written on how to get one of these Shay kits to run properly by using parts from North West Short Line and other manufacturers.  When I calculated the cost of the parts, they were going to be more than the original kit.

Then MDC came out with the RTR version, so I bought it.  I still have an unassembled kit that I will probably never attempt to use.

Even so, the Bachmann Spectrum 3-truck Shay is a much better engine.

i'f you still have that kit i'll take it off your hand because i've been looking for a logging engine to pull some log cars thet my 0-4-0 can't pull
__________ !_o_ !_ o _! !____!____! o OO = OO o
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Posted by trainboy414 on Friday, October 5, 2007 7:44 PM
 cacole wrote:

An entire book was written on how to get one of these Shay kits to run properly by using parts from North West Short Line and other manufacturers.  When I calculated the cost of the parts, they were going to be more than the original kit.

Then MDC came out with the RTR version, so I bought it.  I still have an unassembled kit that I will probably never attempt to use.

Even so, the Bachmann Spectrum 3-truck Shay is a much better engine.

i'f you still have that kit i'll take it off your hand because i've been looking for a logging engine to pull some log cars thet my 0-4-0 can't pull
__________ !_o_ !_ o _! !____!____! o OO = OO o
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Posted by philo426 on Friday, October 5, 2007 7:30 PM
Yeah I'ts cool!Just glad you got the Shay running again!
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Posted by Anonymous on Thursday, October 4, 2007 8:42 PM
 philo426 wrote:
Okay!Glad it helped!I'll send out the instructions next week.(Doesn't hurt to be prepared just in case)! 
 

 

Thanks Philo, just got em. It is nice to have the step by step. Hope I never have to use 'em!

Bill 

 

 

Twomule- thats a great reference page, thanks for the link.  I did find the parts list, but I didn't find the assembly instructions.  Still, I did bookmark it.
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Posted by Anonymous on Saturday, September 29, 2007 1:32 PM

You will find all you need here

http://www.hoseeker.net/mdcmiscellaneous.html

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Posted by philo426 on Saturday, September 29, 2007 12:20 PM
Okay!Glad it helped!I'll send out the instructions next week.(Doesn't hurt to be prepared just in case)! 
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Posted by Anonymous on Saturday, September 29, 2007 10:19 AM

Philo,

After a bit of putzing, and a little cursing, the little folks at the high logging camp once again have their narrow gauge loco to get those fallen trees down to town.

 

The biggest shortcoming in getting the RTR loco (at least in my case) is there are no instructions, documentations, nothin. Thats also why there was a little cursing. But it wasn't too difficult (or I wouldn't have been able to do it). I think you're using the term "universal drive" where I was using "fitting thing". Your terminology is probably more accurate then mine. I doubt I would find "fitting thing" in the NWSL catalog.

 

Both me an the little folks thank you again!

Bill

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Posted by philo426 on Saturday, September 29, 2007 1:56 AM
According to the instructions the gear mounts at the top of the central gear-box.The power universal is then mounted to the output shaft after the gear box is assembled.Which in turn couples to the motor via the universal drive.if you would like ,I can photocopy the instructions and send them to you.
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Posted by Anonymous on Friday, September 28, 2007 9:07 PM
 dinwitty wrote:

 twomule wrote:

Ours has a surging type of lurching on the down hill as slow speeds.

But so did the prototype Big Smile [:D]

 

Roofles!!!

 The mechanics are different on the model vs proto. MDC is geared straight to the trucks and the side linkages go for the ride and don't carry the power. I have no clue if the Bachmann uses the linkages to transfer the power, but on the downhill the train will cause the powering to loosen up and speed up till it hits the gearing in reverse and kick the motor faster.

Then it speeds up again till it hits the other direction of the gears and slows down.

Depending if the throttle was up on the prototype and brakes not set, it would hitch too.

Go back and re-read the posts from the beginning. The person was referring to their Bachmann lurching, not an MDC, and yes the Bachmann is powered through the drivelines, like the prototype. I have have both am I am quit aware of the mechanics of the MDC and the Bachmann thank you Mr Roofles.  Approve [^]

 

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Posted by Anonymous on Friday, September 28, 2007 8:01 PM
 philo426 wrote:
 
 
Yeah it's cool like I said before I do have 2 of them so if I send you one I still have a spare so I'm good!It shows no signs of stripping it's gears so I'll keep my fingers crossed!
 
ok, sorry, senior moment.  It appears that the metal shaft that the old gear was mounted on comes out of the other fitting thing, and the new gear, shaft and all fits back into the fitting thing.  The "fitting thing" is the plastic piece that mates up to the electrical motor. So, I'll try putzing around with it and see where I get.
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Posted by Anonymous on Friday, September 28, 2007 7:37 PM
 philo426 wrote:

 Hi Philo,


 
IF you would like it,let me know I have 2 extra ones.When I ordered spare parts in the '80s they sent you the whole sprue that the requested part was molded on!Good deal and nice to have extra incase something goes wrong!
 

 

Thank you!  Got the gear today, and I really appreciate the favor. 

 

Is the shaft that the gear is mount on just a holder that I should be able to remove, or is the gear mounted permanently on the shaft?  The gear that I had was just the gear with the center hole.  I ask because even when looking at it with my magnifyer  (my eyes aren't what they used to be), I can't tell if it's one piece or not. And I don't want to start hammering away if I'm not supposed to.

 Thanks,

Bill

 

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Posted by dinwitty on Saturday, September 22, 2007 9:13 PM

 

 

 twomule wrote:

Ours has a surging type of lurching on the down hill as slow speeds.

But so did the prototype Big Smile [:D]

 

Roofles!!!

 The mechanics are different on the model vs proto. MDC is geared straight to the trucks and the side linkages go for the ride and don't carry the power. I have no clue if the Bachmann uses the linkages to transfer the power, but on the downhill the train will cause the powering to loosen up and speed up till it hits the gearing in reverse and kick the motor faster.

Then it speeds up again till it hits the other direction of the gears and slows down.

Depending if the throttle was up on the prototype and brakes not set, it would hitch too.

 

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Posted by Anonymous on Saturday, September 22, 2007 7:36 PM

Philo,

Yes, sorry.  I sent through an email, but appears not to have worked.  So, let me do a pm.

 

Thanks,

Bill 

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Posted by philo426 on Friday, September 21, 2007 7:18 PM
GWN GUY,do you still want that gear?I haven't heard from you.Please advise!
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Posted by philo426 on Wednesday, September 19, 2007 2:53 PM
I agree I bought a set of NWSL wheel-sets  for my Athearn PA-1 dummy engine and she runs much better!
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Posted by Anonymous on Wednesday, September 19, 2007 11:25 AM

I'd agree that the NWSL site is confusing, but don't let that put you off.  The stuff they offer is first rate, accurately made and it fits.  You'll also find that they are quite helpful.  I've done several remotoring, regearing projects with their stuff, and it greatly improves performance.  I found the $ spent for their printed catalog was well worth it because at least for me it was easier to understand than the website.

The issue with the factory MDC gearing is that it is cast and not machined.  That means that due to tolerences, die wear, etc., sometimes you get lucky, sometimes you don't.  There also is the problem that some of the gears won't hold up under use.  The NWSL stuff is accurately machined, meaning that it is held to tight tolerences and is concentric.  If you're happy with the factory gearing, that's great! (I've had prettty good luck with my MDC rod engines), but if it breaks, is noisy, etc., the NWSL stuff will offer much improved performance.

In short, you'll like NWSL if you try them.  It's good stuff & good folks.

JBB

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Posted by philo426 on Wednesday, September 19, 2007 7:02 AM
 
Yeah it's cool like I said before I do have 2 of them so if I send you one I still have a spare so I'm good!It shows no signs of stripping it's gears so I'll keep my fingers crossed!
 
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Posted by Anonymous on Tuesday, September 18, 2007 10:28 PM
Well, thats mighty nice of you. If you're sure you won't need one, I'ld certainly be happy to have it. But I wouldn't want to leave you without a spare, just in case the same thing happened to you. I'll email you my address.
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Posted by philo426 on Tuesday, September 18, 2007 7:43 PM
 
IF you would like it,let me know I have 2 extra ones.When I ordered spare parts in the '80s they sent you the whole sprue that the requested part was molded on!Good deal and nice to have extra incase something goes wrong!
 
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Posted by Anonymous on Monday, September 17, 2007 9:53 PM
Yes, it's on a shaft that mates to the shaft on the motor itself.  Very tiny gear.
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Posted by philo426 on Sunday, September 16, 2007 7:04 PM
I have extra gears but they are plastic.Did you mean the top gear that connnects the gearbox to the motor?
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Posted by Anonymous on Saturday, September 15, 2007 5:05 PM

Hi, Sorry to sort of barge in here, but my MDC rtr HOn3 loco just wnet bad a few days ago. I've been searching for solutions, and found myself here.  The little 12 tooth pastic gear at the top of the tall vertical gear box in the center of the engine cracked.  I tried glueing it, but that doesn't seem to work.  I saw some replacement items at NWSL web site, but I'm not sure what to get.

 

They had a 1094-6,  0.3 x 12t spurgear in an old writeup, also some gearing packages:

189-6, 190-6, or 188-6.

 

Does anyone have any experience with this?

 

Thanks in advance,

Bill 

 

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Posted by gear-jammer on Friday, September 14, 2007 12:13 AM

The nice thing about the partial regear kit is that you get new driveline and u-joints, along with axle gears.  Larry didn't replace the axle gears because they were in good shape.

Hint: Bourbon makes small parts smaller.Laugh [(-D]Laugh [(-D]Laugh [(-D]

Sue 

Anything is possible if you do not know what you are talking about.

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Posted by wetidlerjr on Thursday, September 13, 2007 11:24 PM
I bought two RTR and neither ran out of the box so I ordered some of the NWSL bull gears. I replaced the gear on one engine and it now runs fine. I'll get to the other one later. Big Smile [:D]

Bill Tidler Jr.

Near a cornfield in Indiana...

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Posted by philo426 on Thursday, September 13, 2007 12:28 AM
NIB=New in Box RTR=Ready to Run.Well maybe the kit was different from the RTR version.Despite over 20 yeards of occasional running she still purs right along.I guess I got lucky with the worm gears!
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Posted by jeffers_mz on Thursday, September 13, 2007 12:11 AM

The worm gears, mounted not quite center of each axle, 3 out of 4 of them were split when I got it, NIB, RTR.

I packed it up, sent it back, and they sent me a different one, same problem.

At the time I had a thread going here, and was told it's a common occurrance, and I wanted the locomotive, so I decided to quit hassleing with the dealer and just get NWSL gears to replace the split ones. 

When I went to call NWSL though, they had closed for their Christmas/New Year's break so i put the project on hold, and I never got back around to getting it fixed.

I will, winter is coming up, and a lot more of that kind of work gets done. In the summer, I spend a lot of time cutting grass, raising and canning tomatoes, and shooting competitively, so what little layout time is left usually goes to larger projects that go easier outdoors, like benchwork and carving foam. Then in winter, the detail work and individual locomotive or rolling stock or building work gets done.

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