Sorry,don’t know the answer to the first question, but you can use a DCC mobile decoder to control the turntable operation. I would also choose one with back EMF for better low speed control.
The motor may draw at least one amp, mybe more. You should test it with an amp meter first. Then order the correct size decoder. You wire it as you would a locomotive decoder.
If you need to control the polarity of the rails, use an automatic reverse module.
The Walthers website states that its 130’ TT can index at 60 different positions, i.e. 6 degrees?
Jim
I have another question about this…
How long is the BLI Mikado? I need to see if it will fit on the 9" Atlas table.
Thanks
Its about half a tender too long. I just tried it.
Hi:I use the Atlas HO turntable on my N Scale layout because there was no N Scale turntable at that time.I mounted it on a plywood base and attached it underneath the cutout.I built a raised bridge and used fine sandpaper for the pit floor.As the turntable stops at HO scale spacing,I use a DPDT center off switch to blip it into position.It works great and looks good.Also built a 3 stall roundhouse to go with it with plans from an old MRR back issue.This was certainly a less expensive way of having a turntable on my layout.When I figure out how to transfer photos to these topics,Ill add a picture of it.
Joe Caboose
Does anyone know if you can turn a BLI Hudson on a Walthers 90’ TT? I’ve heard the 90’ TT will turn an engine with a 12" or less wheelbase. The BLI Hudson is just around a 12" wheelbase (I measured my new one today).
Thanks, thats too bad, I guess I’ll have to use something else besides the Atlas…
I just got a Heljan #804 manual turntable (on sale, fits my budget, I’ll live with it [:)] BUT, the instruction SHEET is sorely lacking. Does anyone know what order, and which direction all the bottom plates, shim plates, intermediate plates, etc, etc go on?? It has a poor pic, but I can’t tell which side of the plate shuld be up, which ones are above the pit and which ones are below…I guess i’m getting too old for this!! 
Any help would be greatly appreciated!!!
TIA,
John
Yeah, I have the same question, what’s the largest engine the Walthers 90’ will turn?
The largest engines I’ll have are a Mikado and a Hudson…Think those will fit? The ad says it can hold up to a 12 3/8" engine.
Terry:
I started out using toggles to jog/run my TT motor on my CMR and then TEFFY talked me into installing a decoder. Man, I have never been happier. It will go from fast to a speed so slow you can barely see it move. Another plus is that anyone with a throttle has access to it by dialing in the address.
Just use a cheap decoder…nothing fancy will do the job.
So, with the atlas tt, if I add the motor, does it automatically stop at each position??
( 15 degrees ) , Or is there a delay in which I have the time to stop it?? I never got how this indexing thing worked… Can someone please explain??
Thanks!!
Almost forgot, the TT is code 100, what about us code 83 users?? ( I use Kato unitrack )
The Atlas does stop a second or two at each index position (it uses a geneva drive to achieve positive indexing). If you can get at the indexing plate, by taping over the appropriate radial slots, you can make the turntable continue past that position.
Many modelers use the Atlas turntable as an inexpensive mechanism for their own scratch-built/kit bashed turntable bridge. That way you can use the bridge you want.
my thoughts, your choices
Fred W
Ok, Thanks.
The TT motor/drive is operated from it’s own seperate powerpack, right??
I’ve posted this several times before so this may seem repetative.
Ibuilt my TT from scratch for under $100 Cdn. The only down side was it was time consuming. saying that there is no reason why you can’t modify the Heljan or Walthers TT’s and make them work using this drive. As the motor is geared so slow indexing is not an issue.
Amazing what you can do with a 1 1/2" jack, a big gear out of an RC monster truck and some odds and ends and yes it’s DCC
Fergie
[#welcome] John
I posted a reply to your question HERE
The answer to the question about a BLI Hudson fitting on a 90’er Walther’s is, not really. It will juuuuuuuusssst fit, but it will be so close that you will have fits getting the loco to fit on the bridge electrically, and not using your finger for a nudge here and there. However, the upgraded QSI chip may make a difference for low speed crawling and get you onto the bridge properly using the engine motor, itself.
Is there a “transition track” from code 83 to code 100?? I use code 83, and the atlas TT is cose 100. What about walthers 90ft TT, is it code 83 or 100???