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Discussion Starter #1
At least two other people have reported this symptom.
The loco runs fine in one direction. Stop loco and reverse direction, SOMETIMES the loco locks up and raises the second driver. A couple reversals and the loco heals itself. Can happen either when going forward and reversing or going backward and reversing.

The following is just ONE cause of this symptom.

I sketched in hidden parts of the reverser in the picture of the right (engineers) side of  the K27.


Look close at your loco, Make sure the screw is not missing on the engineers side.

ALSO!
Look close at BOTH sides and make sure the blue part goes through the center of the green part. If not, remove the screw. Once both sides are properly engaged, install the screw.


B0B
 

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Discussion Starter #3
TOC,
Are you saying this can't cause the problem?
- or - 
Are you saying that you have found another likely cause.

I hear rumblings about loose counterweights, but, so far I have not had them cause any problem. 

But then I only have one Kay and only 3 hours to look at it. So Please enlighten us mortals.

B0B
 

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After 10 or so hours of running without a problem, my K has developed a hitch in its git-a-along.  If it runs at all it sort of hops down the track.  More likely than not it won't move in either direction.  It appears that I have the same problem the Greg photographed in the previous post.  There seems to be a lot more play in the wheels and counterweights.  There is a modification over in the Bachmann forum that I'm going to try as soon as I can get some .007'' brass.

Chuck N
 

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Thanks, TOC

Sometime I'm going to learn not to buy a Beta.  I should wait for the rerelease, but it is one beautiful engine.

Chuck
 

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Posted By chuck n on 01/21/2008 5:30 PM
Thanks, TOC

Sometime I'm going to learn not to buy a Beta.  I should wait for the rerelease, but it is one beautiful engine.

Chuck


Chuck,
Everybody gets a beta./DesktopModules/NTForums/themes/mls/emoticons/crying.gif
 

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Tony:

I think that there are more Betas from some manufacturers that others. 

I have three Bachmanns that I run regularly, a climax, connie and the new K-27.  Only the climax has not had a significant problem.  After the Connie stopped, I used TOC's suggestions for the Connie gears, and I am in the process of trying to fix the K-27.  I also had trucks on the Connie tender break.  No replacement trucks were available from Bachmann.  I now have Accucraft trucks on the tender.  I also have LGB, USAT, Accucraft and Aristrocraft engines.  Of 30 plus LGBs I have had to return two, one for a failed sound unit, and one for design flaws in the motor block (the original red and green mogul).  Both of these were repaired and returned.  After many years of heavy use I've had to replace gears and motors in a couple other moguls.  LGB always had parts and getting them from LGB or the LHS was never a problem.  The only other engine I had to send back was the Aristocraft Mikado with a broken axle.  Aristo returned the engine in a timely fashion and I haven't had any further problems.  Unfortunately, Bachmann seems to lack a supply of parts and we are  the Beta  testers.   

Cheers,

Chuck N

PS I've been running my Accucraft K-27 for a number of  years without any significant problems.
 

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Thanks to help from this thread and one over at Bachmann "Loose counterweights on K-27".   I now have my K back on the tracks and running.  I put in 0.008" shims as suggested by TOC.  If it weren't for all you helpful guys, I'd be getting more upset by the minute.  Thanks to Tommygunner who started the thead at Bachmann and Bob who started it here.  Special thanks go to Bill375 at Bachmann who suggested that shims were needed and TOC here who suggested going a little thicker on the shim.

I seriously doubt that I would have figured it out by myself.

One other thing.  Using the lid to the engine box to hold the upside down engine works great.  I'll have to try it with some of my other engines.

All's well that ends well, at least until the next problem.

Chuck N
 

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Reading the above I'm glad I did not buy one of the first run Bachmann K27 - learnt my lesson with the Bachmann Three-Truck Shay (dcc sound version) which shut down when the voltage exceeds 22volts - and I run MTS/Massoth at 24volts.

Given that, I'm very happy with my Bachmann Two-Truck Shay and Heisler (both dcc'd and fitted with Phoenix Sound) - they sound just great winding their way up the garden!!)

Keith
 

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Ah, but the second run was on the water before this "fix" was submitted to Bachmann.
Maybe they caught it in time.
There is one person who can tell us.
 

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Blackburn, if you don't have a use for that K-27 send it my way. I'll put it to work!!
 

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To those of you who have fixed the loose counterweights, a question.  Where did you get your .007 or .008 shim material? Thanks. John
 

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Discussion Starter #16
I didn't.
Looked all over. Everyone was out

Got back home at 10:00 PM worn out from the driving.

Sat down, stared at the poor dead Kay and sipped on a can of Coke.

Then it hit me.

Couple hours later,  Kay is alive an rolling.

Coke cans are .004
Fold and then cut.
 
 

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Heh, that'd make a good Coke commercial! Seriously though, American ingenuity wins out in the end! I'm glad you were able to solve your problem!
 

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Great tip on the coke can! If I can find brass today I'm going to dig through the recycle tonight :)
 

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Bob,

Don't you just love it when a plan comes together? 

Mark
 
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