HO scale roundhouse

Has anyone used the Bachmann HO turntable?  It has 22.5 degrees between the tracks.  I can't

find a roundhouse that fits it.  Most have either 10 degrees or 16 degrees between the tracks.

I am new to this so I am in a quandary as to what to do.  Maybe I should just get rid of the turntable.  I

am beginning to think it is a piece of expensive junk

Help anyone,

 

Thanks Ken

kwatson804@gmail.com

Comments

DKRickman's picture

Can it be modified?

Seems to me that 22.5 degrees is a very odd number.  I would assume that Bachmann makes, or will make, a roundhouse to match it - maybe the Thomas roundhouse fits?

Since it is virtually impossible to find a roundhouse that fits, is it possible to modify the turntable to use a narrower angle?  I haven't looked closely at the Bachmann turntable, so I don't know how it works.  Does it have a Geneva mechanism, like the Atlas turntable?  If so, the only way to modify it would be to open it up and either gear the table down internally (after the Geneva mechanism) or remove the indexing completely.  If the only problem is that the pit only has slots for track at 22.5 degrees, then it should be easy enough to add more tracks.

If nothing else, perhaps you could modify a roundhouse (like the Atlas, and I see you've seen my posts on the subject) to have stalls at 11.25 degrees.  Every other stall would be a dummy, but at least it would look better than such a toy-like wide angle roundhouse.

Ken Rickman

Danville & Western HO modeler and web historian

http://southern-railway.railfan.net/dw/

DKRickman's picture

Found it!

I figured B'mann made a roundhouse for Thomas, and sure enough..  16 stalls means 22.5 degrees between stalls.

[edit] see below..  I think I'm wrong on the angle here.

http://www.hobbylinc.com/htm/bac/bac45236.htm

Ken Rickman

Danville & Western HO modeler and web historian

http://southern-railway.railfan.net/dw/

DKRickman's picture

Are you sure it's 22.5 degrees?

Looking at the turntables above, they should have 20 degrees between the tracks, not 22.5.  There are 16 tracks, and space for 2 more where the handle is..  18 tracks would be spaced 20 degrees apart.  Is your turntable the same?

If so, it's a little easier, since the 20 degree spacing could use a 10 degree roundhouse without modification, or gear the indexing down 2:1 and make it a 10 degree turntable.

Ken Rickman

Danville & Western HO modeler and web historian

http://southern-railway.railfan.net/dw/

Bachmann Roundhouse

Ken,

Thanks for your research.  This roundhouse is just the ticket. I can paint it as necessary to look like a

brick roundhouse.  I'm going to need some extra space on the layout to fit it in, but that is okay.

Ken W.


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