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HO Turntables - Experience

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Posted by Odyknuck on Wednesday, August 07, 2019 12:05 PM
Is yours the DCC model #933-2850?
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Posted by wjstix on Wednesday, August 07, 2019 12:54 PM

nealknows
 
trainnut1250

Atlas can be modified if you are handy.

 

 

What needs to be done to the Atlas Turntable. I have one of the ones with 21 tracks. Need to get the turntable motor. What would I need to modify it other than to add an outo reverser to the turntable track. I run DCC.

Thanks!

Neal

 

 
The Atlas TT reverses itself - one track is dead, when you go past it, it reverses polarity. The motor runs best if you don't hook it up directly to a 12V source but to a limited or variable power source. At 3-4 volts it is slower and much quieter than at 12 volts.
Stix
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Posted by wjstix on Wednesday, August 07, 2019 12:57 PM

gary233
 
ATLANTIC CENTRAL

The Bachmann models of the 2-6-6-2 are about 95' scale feet long.

Sheldon

 

 

 

So i need at least a 110’ Turntable.  Thanks

 

Nope. Length of the engine body is irrelevent, it's the length of the wheelbase. 95' sounds right for the USRA 2-6-6-2, so it's wheelbase is probably around 85'. It should then fit on a 90' turntable.

Best way to work it out for sure is to cut a piece of track to the length turntable you're considering, and try it out on your equipment first. Nice thing about the Atlas HO TT, it uses a 9" turntable bridge so anything that fits on a 9" piece of snaptrack will fit on the turntable.

Stix
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Posted by SeeYou190 on Wednesday, August 07, 2019 2:11 PM

Odyknuck
I currently have a Bowser installed that has it's own set of issues.

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What issues have you had with the Bowser turntable?

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I used one on a previous layout with no problems, and I have two tucked away for the next layout.

.

-Kevin

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Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

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Posted by ATLANTIC CENTRAL on Wednesday, August 07, 2019 2:51 PM

wjstix

 

 
gary233
 
ATLANTIC CENTRAL

The Bachmann models of the 2-6-6-2 are about 95' scale feet long.

Sheldon

 

 

 

So i need at least a 110’ Turntable.  Thanks

 

 

 

Nope. Length of the engine body is irrelevent, it's the length of the wheelbase. 95' sounds right for the USRA 2-6-6-2, so it's wheelbase is probably around 85'. It should then fit on a 90' turntable.

Best way to work it out for sure is to cut a piece of track to the length turntable you're considering, and try it out on your equipment first. Nice thing about the Atlas HO TT, it uses a 9" turntable bridge so anything that fits on a 9" piece of snaptrack will fit on the turntable.

 

89.42 feet to be exact, so most likely it could be carefully positioned and turned on a 90' turntable.

Sheldon

    

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Posted by Odyknuck on Wednesday, August 07, 2019 3:07 PM

I put a lot of work into the Bowser to get it to run flat however it is still not right.  This is a new layout that I am building and the turntable is not yet finished etc. So now is the time to determine if I want to live with the old technology or use the better looking self indexing Walthers.

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  • From: Southern Florida Gulf Coast
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Posted by SeeYou190 on Wednesday, August 07, 2019 5:30 PM

Forgive me here. What do you mean by "run flat"?

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My turntables have a plywood bases suspended from a wood deck by a sheet of brass. The depth of this pit is equal all around. The ring rail is on the bottom and the turntable rides on brass rollers on the ring rail.

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Was your bridge higher on one side than the other? Was the pit not equally deep all around?

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I don't know what work would even be possible if it did not work right. Removing all those brass brads would be quite a task to level the floor.

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I am very curious about this.

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-Kevin

.

Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

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Posted by blackpowder1956 on Wednesday, August 07, 2019 6:59 PM

I have one built 15 years ago by AAA turntables. It is indexed in 10 degree increments and has been brutally reliable. I am not sure if Arjay is still making them. I can turn an HO Big Boy on it.

 

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Posted by Odyknuck on Wednesday, August 07, 2019 10:18 PM

I had to shim the rail  the bridge rides on in mutiple place's to get it to be at the same level all the way around the table edge.  I bought the turntable off Ebay so it's very possible it was a known issue and was not disclosed. I also added a trust bearing between the brass sleeve and the "T"insert in the deck to make it run smoother.  It is very close now however my concern it could warp again in a different place and have me chasing my tail.   I have not yet installed the drive motor or the Indexing system. I was told by Bowser to not use their setup as it does not work very well and recommended the Daily Electronics unit.

BTW I tested the new Walthers and it appears to work just fine. It does look so much better than the Bowser.

 

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Posted by Odyknuck on Thursday, August 08, 2019 6:52 AM

I had to shim the ring rail to make the bridge level with the top of the assembly all the way around.

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Posted by Odyknuck on Thursday, August 08, 2019 5:08 PM

So I decided to install the motor unit on the Bowser just to see how it works. It's actually a very smooth runner.  I suspect the thrust bearing I installed has a lot to do with it. It does not have indexing however using a Tech 2 its easy enough to control speed to get the bridge alignment.  So now I need to make a decision.   Leave the Bowser in and finish it up or tear out are the work already done and replace it with the Walthers. Gonna need to sit on that for awhile lol.

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Posted by richhotrain on Thursday, August 08, 2019 5:37 PM

richhotrain

I have had the Walthers 130' turntable for 15 years now, and it works just fine. So, fear not!

Rich 

Odyknuck
Is yours the DCC model #933-2850? 

No, it is 933-2829.

Rich

Alton Junction

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Posted by SeeYou190 on Saturday, August 10, 2019 6:22 PM

Odyknuck
It's actually a very smooth runner. I suspect the thrust bearing I installed has a lot to do with it. It does not have indexing however using a Tech 2 its easy enough to control speed to get the bridge alignment

.

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I used my Bowser turntable with a three position rotary swicth to select speed and a DPDT toggle to select direction of rotation.

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I was very satisfied with it. I hope to have equal performance from the next two.

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I never has indexing, aligning by eye was always OK. None of my locomotives are as long as the bridge.

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-Kevin

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Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

  • Member since
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  • 7 posts
Posted by Odyknuck on Wednesday, August 14, 2019 9:31 PM
they way my Roundhouse sits it would be difficult to see the track alignment without a step stool and looking down from the top.

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