Bachmann Online Forum

Discussion Boards => General Discussion => Topic started by: oldgloryusa on February 26, 2010, 08:09:36 PM

Title: Turn Table
Post by: oldgloryusa on February 26, 2010, 08:09:36 PM
When will Bachmann make a turn table to use with the EZ track?
Title: Re: Turn Table
Post by: ABC on February 26, 2010, 08:17:12 PM
If I'm not mistaken, they do make one, there's just one problem, you have to buy a "Thomas" roundhouse with it and it is only manual.
(http://www.bachmanntrains.com/home-usa/products/images/uploads/Bachmann_8.18.09-029103.jpg) Tidmouth Sheds with Manually Operated Turntable
Title: Re: Turn Table
Post by: oldgloryusa on February 26, 2010, 08:23:57 PM
Your right.  Thanks!! But I would like one with a motor that will work with my dcc. Maybe they will bring one out?
Title: Re: Turn Table
Post by: ABC on February 26, 2010, 08:35:07 PM
Just buy an Atlas one and make some modifications to the track.
Title: Re: Turn Table
Post by: buzz on February 28, 2010, 11:10:16 AM
hi ABC
Can't say I see a problem with that given the market its aimed at.
would be nice if it had nickle silver rails rather than steel.
Nothing wrong with the loco shed a coat of more realistic color will not fix.

A turntable for the discerning adult would be a different beast all together.
regards John
Title: Re: Turn Table
Post by: Joe323 on February 28, 2010, 01:01:24 PM
Kinda looks like Yankee Stadium to me.  Could you change the track to N/S?
Title: Re: Turn Table
Post by: ryeguyisme on March 01, 2010, 01:00:46 AM
Quote from: Joe323 on February 28, 2010, 01:01:24 PM
Kinda looks like Yankee Stadium to me.  Could you change the track to N/S?

I believe it should be n/s considering the price tag attached to it
Title: Re: Turn Table
Post by: Jim Banner on March 01, 2010, 04:52:19 PM
To answer the rest of oldgloryusa's question, the Atlas and many other turntables will operate with your DCC.  Just add a low cost decoder.  Connect the red and black leads to a convenient source of DCC signal (usually the closest powered track) and the orange and grey wires to the turntable motor.  You can even use a lighting output to operate the roundhouse lights.  If your DCC system allows it, and you use a suitable decoder, you can use the second lighting output for a yard light or a light on the turntable bridge.

Jim
Title: Re: Turn Table
Post by: ryeguyisme on March 01, 2010, 09:01:44 PM
Quote from: Jim Banner on March 01, 2010, 04:52:19 PM
To answer the rest of oldgloryusa's question, the Atlas and many other turntables will operate with your DCC.  Just add a low cost decoder.  Connect the red and black leads to a convenient source of DCC signal (usually the closest powered track) and the orange and grey wires to the turntable motor.  You can even use a lighting output to operate the roundhouse lights.  If your DCC system allows it, and you use a suitable decoder, you can use the second lighting output for a yard light or a light on the turntable bridge.

Jim

Bravo, what an interesting concept
Title: Re: Turn Table
Post by: Pacific Northern on March 02, 2010, 10:52:56 PM
The Atlas HO turntable is geared to serving tracks at 15 degree offsets. What are the indexes for the bays of the Thomas roundhouse?
Title: Re: Turn Table
Post by: Jim Banner on March 02, 2010, 11:32:15 PM
Based on ABC's photo above, there are 9 equally spaced tracks in 180o so the spacing would be 180 / 9 = 20o.

Jim
Title: Re: Turn Table
Post by: oldgloryusa on March 20, 2010, 07:12:09 PM
Hi
I've been gone for a couple weeks but would like to thank each of you for your input. I'm still trying to decide on what table if any, I will buy. My layout keeps getting larger so I may decide not to use one. I have all of my loco's (15)on the track now.
I run 5 of them at the same time on 3 different lines. The remaining loco's are complete with cars and I just switch them from a number of sidings on all 3 lines. This rotates the loco's so they all get run time. Thanks Again!!
Title: Re: Turn Table
Post by: Craig on March 21, 2010, 07:46:06 PM
Quote from: oldgloryusa on March 20, 2010, 07:12:09 PM
The remaining loco's are complete with cars and I just switch them from a number of sidings on all 3 lines. This rotates the loco's so they all get run time. Thanks Again!!

I used to do something very similar. I kept entire trains on spurs in my freight yard; 14 of them to be exact. Now I just keep the rolling stock in the freight yard and the engines are in the new engine yard, which features a Walthers 130' turntable.
Title: Re: Turn Table
Post by: jgaynor on March 21, 2010, 08:19:20 PM
Quote from: Jim Banner on March 02, 2010, 11:32:15 PM
Based on ABC's photo above, there are 9 equally spaced tracks in 180o so the spacing would be 180 / 9 = 20o.

Jim

Jim if you look at the picture again, counting all the section with in 180 there are 10 so that's 180/10 = 18 so my guess would be roughly a 15 degree spread between track. I tried to lay it out with a program I down loaded call ANYTRACK and it looked wrong but looks right at 15

if anyone has issues trying to figure out a layout I fully suggest purchasing this software off the web I found it worth the $50+/-
Title: Re: Turn Table
Post by: NarrowMinded on March 21, 2010, 08:55:58 PM
Jgaynor,
I think you may be counting wrong. You may be counting the same track twice, count the spaces on one side of the turn table track, you will see there are 9, add 9 for the other side 18 total (track or not there will be an equal space) divide 360 by 18 you will end up with 20 so I think Jim is right.

Just my  1/2 cent <-- all I can afford in this economy.

NM


Title: Re: Turn Table
Post by: pdlethbridge on March 21, 2010, 09:27:19 PM
Of course Jim is right, his ability to give people severe headaches is proof, and besides, he told me he was right. ::) ::) ::) ::) ::)
Title: Re: Turn Table
Post by: Jim Banner on March 21, 2010, 09:52:00 PM
Jgaynor,
Let's look at the turn table angle another way.  How many evenly spaced tracks would there be in a complete circle?  When you count around, there are 16 places where tracks can leave the turn table.  But they are not evenly spaced.  There is a gap where the crank is.  At first I had problems trying to figure out how many "missing" tracks" that gap represented, one or two.  Then I realized that turn tables are always built with an even number of tracks.  So that meant two missing tracks, for a total of 18 tracks if they were placed all the way around and spaced evenly.  That would make the angle 360 / 18 = 20 degrees.

Twenty degrees is twice the angle used in many real world roundhouses.  The reason for the smaller angle in the real world is the much longer tracks from the pit to the roundhouse doors.  The roundhouse in Durango Co. is a good example and both the pit and the 17 stall roundhouse are clearly visible on Google Earth.  Unfortunately, it, like many roundhouses, no longer have their tracks or their tracks are not visible.  A smaller roundhouse complete with turntable and tracks exists at Heritage Park in Calgary Alberta at 50o 59' 09" N  114o 06' 34" W and is clearly visible on Google Earth.  A couple of quick measurements and a bit of trigonometry indicate an angle of 10o between tracks.

Nine tracks or ten tracks in 180 degrees does not make a whole lot of difference.  But I am having trouble with 18o (or 20o) becoming 15o.  Fifteen degrees may work well with your program but that would give 180/15 = 12 tracks in a half circle and I think we both agree that the number in the photograph is rather less than that.  What is it that makes it look wrong at 20o or at 18o?  Is there anything other than the tracks looking too far apart compared to the real world?  Maybe your program is doing better than you thought.  The tracks on this model really are too far apart compared to the real world.

P.D.,
Didn't you know I have shares in an aspirin company?  I'll have to send you a bottle to thank you for saying I was right.

Jim
Title: Re: Turn Table
Post by: pdlethbridge on March 22, 2010, 12:56:16 AM
       Send the low dose kind ;D ;D ;D ;D ;D See, you told me you were right. Yampa Bob would have told you the same thing. :D :D :D :D :D
Title: Re: Turn Table
Post by: jgaynor on March 22, 2010, 08:15:03 AM
Jim
somehow that make more sense to me but then math isn't one of my strong points. I guess I'll just have to wait to get the actual Bachmann kit to see how it actually fits on my layout. And of course then I can play with motorizing it