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 Bachmann Shay Gear Replacement SBS
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Author Previous Topic: A&D Claremont Wharf Topic Next Topic: 4 Wheel Gondolas
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BigLars
Engineer

Premium Member


Posted - 10/08/2013 :  07:15:35 AM  Show Profile  Reply with Quote
I have not heard of the axles being out of round. Is the axle in the truck correctly?


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brownbr
Fireman

Premium Member

Posted - 10/08/2013 :  07:44:40 AM  Show Profile  Reply with Quote
Well this looks semi-complicated. Thanks for the step by step. I'll save for future use.


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Pacbelt
Fireman



Posted - 10/08/2013 :  1:09:38 PM  Show Profile  Visit Pacbelt's Homepage  Reply with Quote
I'll have to check when I take it apart.....
It could just be the cracked gear pushing the wheel up & down.....

Right now, I'm rewiring Geezer's old Critter, and trying to cram TCS KAT-12 w/Keep-Alive in the little body....


______________________
Carmine * CEO, Engineer, and Janitor * Pacific Belt RR, since 1975!!
NCE & TCS, w/Keep-Alive ONLY!!
PBRR Page: http://www.facebook.com/PBrr.N

Country: USA | Posts: 1073 Go to Top of Page

BigLars
Engineer

Premium Member


Posted - 10/08/2013 :  7:54:30 PM  Show Profile  Reply with Quote
quote:
Originally posted by brownbr

Well this looks semi-complicated. Thanks for the step by step. I'll save for future use.


Bryan,
It really is not that complicated. If you ever need help let me know and I will fly in and help the play with your other trains.



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JawboneFlats
New Hire

Posted - 01/06/2014 :  11:46:12 PM  Show Profile  Reply with Quote
I got a box of Bachmann gears for my 6 pieces of failure prone equipment (Shays, Climaxes, etc.) a couple of weeks ago. I was ready to give up on Bachmann all together, but they finally delivered the promised parts. It was just over 6 months from when I made my first request and after the second "status request" email, they came in just 2 weeks. So just in case anyone else is in that same situation of waiting, try asking for an update on your order.
And now the fun begins...
Dennis aka JawboneFlats



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Pacbelt
Fireman



Posted - 02/08/2014 :  07:07:57 AM  Show Profile  Visit Pacbelt's Homepage  Reply with Quote
...... I'm finally doing my Shay gears tonight.

Firstly, I tried "Plan C". I pre-purchased four driveline clips.
Then, I simply pryed off the old clips....

Of Course, since I had bought new ones - NONE of the old ones broke, and came out easily!

****** NOW, I discovered something odd and different!!
I took the driveshaft off, and spun both axles.....
THE FRONT AXLE WAS BINDING AT ONE POINT!!!
I got it under my magnifier, and found the front wheel gear was actually hitting metal flash on the truck!!

SO - looks like I'm disassembling the truck anyway! (THANKS AGAIN Larry, for an excellent writeup!! I'm sure I would've removed those top screws!)

Once apart, I took various files, and really cleaned up the insides of the trucks.....

While in there, I cleaned the flash off of the top, bottom, and sides of the bearings (purely for aesthetics!)
I also sanded lightly, the bearing ends on each side (for that extra little bit of electrical contact!)

OK, with THAT sorted, I slid the axles back on, and checked again...
Nothing touching those wheels, but the bearings!!


WELL - now I've pretty much required myself to do the Rear truck as well !!

{I'm pretty sure that not everyone's trucks have excessive flash, binding a wheel......
However, it only takes a few extra seconds, to spin the wheels after removing the driveshaft, to check for binding!!}

..... it may just be mine!


______________________
Carmine * CEO, Engineer, and Janitor * Pacific Belt RR, since 1975!!
NCE & TCS, w/Keep-Alive ONLY!!
PBRR Page: http://www.facebook.com/PBrr.N

Country: USA | Posts: 1073 Go to Top of Page

Pacbelt
Fireman



Posted - 02/08/2014 :  07:18:00 AM  Show Profile  Visit Pacbelt's Homepage  Reply with Quote
Also - any idea where that black washer fell out of?? I really don't know where it came from!

______________________
Carmine * CEO, Engineer, and Janitor * Pacific Belt RR, since 1975!!
NCE & TCS, w/Keep-Alive ONLY!!
PBRR Page: http://www.facebook.com/PBrr.N

Country: USA | Posts: 1073 Go to Top of Page

BigLars
Engineer

Premium Member


Posted - 02/08/2014 :  11:19:51 AM  Show Profile  Reply with Quote
quote:
Originally posted by Pacbelt

Also - any idea where that black washer fell out of?? I really don't know where it came from!



Check the face side of the gears on the wheels. It has been a long time since I fixed a Shay so Thayer might be a lucky guess.



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Pacbelt
Fireman



Posted - 02/09/2014 :  05:23:31 AM  Show Profile  Visit Pacbelt's Homepage  Reply with Quote
.... I'll look into that.

I think I couldn't be the only one to have excessive molding flash on thx inside of the trucks....

I'm betting this will run Exceptionally smooth - especially with the TCS KAT-12 decoder!!!


______________________
Carmine * CEO, Engineer, and Janitor * Pacific Belt RR, since 1975!!
NCE & TCS, w/Keep-Alive ONLY!!
PBRR Page: http://www.facebook.com/PBrr.N

Country: USA | Posts: 1073 Go to Top of Page

Pacbelt
Fireman



Posted - 02/10/2014 :  04:58:07 AM  Show Profile  Visit Pacbelt's Homepage  Reply with Quote
........ I thought I'd point out my issue.
When I took off the front truck, I rolled it back & forth on my hand, and felt an odd binding.

I flipped it over, and found the wheel sprockets were actually grinding at points - on flash on the truck sideframe!!


The squiggly orange lines point to the interference sites!

So, I got in there with a jeweler's file, and cleaned the area up!
I also removed the paint, on the bearing surfaces, on BOTH sideframes. Hey, ANY extra electrical contact is good - right!!

~ Hey, I'm sure everyone's Shay doesn't have this issue with metal flash....
But, if you have to take it apart anyway, it would be worth checking, wouldn't it???

********************

NOW THE REAR TRUCK - had "our" problem!!!

- now, if you can't see it on the outside wheel/gear....


..... It becomes way more obvious, after I removed the shaft!!!

I cleaned the extra flash in this sideframe as well, even though I didn't notice any interference in the rear truck....
But - an ounce of prevention!

* Just wanted to share, what could be a unique problem, but you never know!
Could run a LOT smoother now!



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