Did anyone make an O72 curve for O27 profile track?

Yes, Lionel made 072 radii track in the 027 profile.  I, too, always liked the large radius Marx switches, also the fact they are a very low profile mechanism for clearance of longer length rolling stock.  Although I do not have any 027 track on my current layout, I have seen "Hi-Rail" layouts that did use 027 because of the low profile with 072 curves, and they look really nice, and use Gargraves or Ross switches.

Jesse    12-68275

I believe K-Line made it. Here is a link.

http://www.legacykline.com/app...amp;p_oem_sku=K-0226

I am reading that neither Lionel nor Marx made it.

George

prrhorseshoecurve posted:

No sorry. 072 was and still is considered the Main Line track this was only done in the higher profile rail. Fwiw,  if made in the lower profile rail that would have been confusing to many just starting in the Hobby.

Confusion has little to do with it.

O-27 was made in -27, -34, -42, -54, & -72 by various manufacturers.
O was made in -31, -36, -42, -54, -63, -72, -81, -96, & -120 by various manufacturers.

Yes, K-Line did make it in O27 style.  I have a few circles of it.  I don't know if it matched what you have for Marx.  A 72" curve section in one manufacturers track is not necessarily the same as another manufacturer.

OK..... found the boxes of 027 track and the 072 I have is made by K line, my mistake on manufacturer.  The largest Lionel radii 027 I have is close, but must be 054, has only 3 ties and fits inside the 072 radius perfectly for use as an inner curve to the 072.  I didn't take a picture of the larger radius Marx switches, but they are smaller radii than the 054, perhaps 042?  Good topic.......

Jesse   TCA  12-68275

NH Bill posted:

... A 72" curve section in one manufacturers track is not necessarily the same as another manufacturer.

For O-72, they were all pretty darn close to 35.88" radius.

texastrain posted:

...I didn't take a picture of the larger radius Marx switches, but they are smaller radii than the 054, perhaps 042?  Good topic.......

The Marx wide radius switches are O-34.

As Jesse said, you will need to look at Ross to get an O72 switch that will match the profile of O27. Don't get the Ross tinplate switches as those are for regular Lionel O gauge tubular track, not O27. 

texastrain posted:

OK..... found the boxes of 027 track and the 072 I have is made by K line ...

 Are those empty boxes, or would you be interested in selling the O72?

HGL,

   If you can get your hands on the old O Gauge K-Line 072 track it works very very well, use the old 711/072 Lionel Switches with it, or transition in and out of 072 FasTrack Command Control Switches, runs almost every different makers Trains perfectly, even Tin Plate.  Makes for a real nice running layout.

The 027 is nice but the O is nicer and you can run more trains on it.  O27 limits you a might.  Having loops of both is nice also.

PCRR/Dave

Been using the K-Line 027 072 curves for years with postwar and modern equipment with no issue. If you can find it use it, as it looks much better than the tall 0 profile track.

As a fyi Ross switches are about 1/8" taller than 027 track. You'll need to shim the track a bit to make everything level.

Marx made 027 and 034 curved track and 027 and 034 switch tracks. Also that American Flyer made 040 curved track and 040 switch track before WW2. The American Flyer prewar track is the same height as Lionel "O" gauge tublar track.

I have two circles or O54 and O72 in personal storage waiting for a larger, future layout.  My new layout uses 54" on the outer mainline and 42" and 34" on the inner. I also used 54" and 42" also on the ceiling layout. All O27 lower profile track. Picked up 42" K-Line switches so I didn't have to use track power.  For those of us staying with tubular track, while availability can be a challenge, there are no longer any limitations relative to higher-profile O-Gauge. 

Early on so that I could keep my switches, I ran all 027 tubular track with 031 curves that used the same size rails and track profile. IIRC, MPC made this kind of track for a while but I am not sure if anyone makes it today.

Thanks for all the quick replies.

I will start searching for the 72 curves by Kline.

Bob

CP BOB posted:

Thanks for all the quick replies.

I will start searching for the 72 curves by Kline.

Bob

CP BOB, did  you find your 72" curves? If not, check with forum member ZWBob. I just bought a set from him and I believe he had 2 circles of K-Line 72" curves left to sell.

I took your advice and contacted him. Thanks for the info.

Bob