Cornerstone motorized 90' TT question....

Is the motor mechanism for the 90’ motorzied TT w/DCC the #933-1050 as shown/listed in the Walthers catalogue pg. 382? It’s referred to as a kit that “fits various Walthers models” but all that’s pictured is the drive motor and my question is what else do you get with the “kit”?

I’ve got one of those kicking around somewhere but I could’t find it today to look at it again. From my recollection it was just the motor pictured on the Walther’s web site and a couple of mounting brackets designed for other specific Walthers products, one of which was the 90’ TT kit.

The TT kit has long since been discontinued (no loss, I assure you). It was replaced first by the built up factory motorized version, later superceded by the current built up factory motorized DCC version. One didn’t/doesn’t have to buy the motorizing kit you asked about for the DCC version or its immediate successor. They come with the motorizing already done. You will need to provide a power supply.

Good luck!

Dang…didn’t get an email notification of your post and just found it…and the option is enabled in my preferences…obviously this new format needs work…

That said, in hindsight I should have stated my reason for asking what the motorized kit consists of was to (hopefully) be able to adapt it to a Peco On30 TT if it had some gearing, shafts, etc., along with the motor. Apparently it doesn’t so will assume the visible drive gear meshed with a large ring gear mounted to the bridge pivot shaft on the discontinued TT. Strange that Walthers still states it can be used with various Walther’s TT’s w/o the “discontinued” in the verbiage.

As for the current built-up motorized TT offerings, it’s odd Walthers doesn’t list for sale replacement drive motors for them and the associated gearing, etc., that could also be adapted by modelers to other makes of TT’s.

Over50,

They still list the Motor, because it is also used to motorize, other Models, for instance,the double track swing bridge.

Cheers,

Frank

Thanks guys for the replies. Methinks I’ll give Walther’s a call next week to ask if the drive and gearing for the current built-up 90’ TT can be purchased separately…although I doubt it … but…

That particular kit was a bust in the run Walthers put out about 8-10 years ago. The pits were out of round enough that the bridges would bind partway around their arcs. I know, and so do others who have since reported from the time I joined this forum and the hobby nine years ago, because we built them. Since, then, I believe Walthers redid part of the tooling and re-issued the kit because it suddenly became available again in number.

Aside from the round problem, there was a substantial problem with the bottom bearing for the pivot that the bridge uses. It didn’t fit well. The copper blade wipers that wipe two rings partway up the pivot post would loosen and they’d slide off the rings leaving the rails unpowered. I had to fashion flanges to sit at the lower edges of both rings so that if mine loosened they’d only slide down to rest on the flanges. I suppose Locktite would have obviated all that creative solution. I had to eliminate the bottom bearing and shim between the pit’s nether surface, outside it, and the large washer. The styrene shim, or spacers, one rectangular one on each side of the pivot post, took up a lot of slop and kept my bridge steady. I posted images at the time.

If your assembly has a solid pivot bearing in terms of not allowing wobbles, and your pit is correctly shaped, then mating the motorizing kit (an addtional purchase of about $40) will go okay if you take your time and figure out how to keep everything meshes without undue wear or stresses. I found I needed cardboard shims between the styrene drive cover that scrws up onto the bottom of the whole assembly and the motor to keep the mesh at a reasonable pressure and not let that sloppy mechanism begin to stutter and miss cogging.

I can’t say I have heard good or bad things about what is available now. I can tell you that you will not be disappointed with the much more expensive, but really spiffy and reliable, DCC version th

The Turntable kit is not dead.

Walthers did re-release the 90’ turntable kit.

Both the 90’ RTR and the 90’ Kit were upgraded, the RTR became the DCC version and the Kit also upgraded.

The kit numbers are for the original turntable 933-3135 and the re-released upgraded version is 933-3171

I had a new DCC 90 RTR that worked for a week and then was constantly having to be reset. Walthers sent me a number of fix commands to try but nothing worked. I sent the turntable back to Walthers, where it got lost.

I could not afford to buy another Walthers RTR so I opted for the new upgraded kit. The new kit was easy to install, I did not opt to buy the motor to motorize it. I run DCC and the turntable works fine. After a while with lots of practice lining up the bridge to the tracks becames quite easy.

While I have not seen one of the old turntables I can tell you the new turntable kit did not exhibit any problems with the pit not staying in round.

If I had known the kit and been upgraded I would have bought it and not wasted paying for the expensive DCC RTR which was nothing but a pain to me.

I certainly would stay away from the old kit version as they were lots of comments made as to problems, however, not all comments about it were negative, a few purchasers indicated it worked fine for them. Likely the luck of the draw, possible poor quality workmanship with the components not fitting properly.

don7… Your information including part numbers was great. For my purposes - which is to simply turn a diesel engine around so that it’s facing forward after bringing empties to a coal mine and picking up loaded cars - the cost of the builtup 90’ TT wasn’t practical. I know it really doesn’t make any difference which way a diesel pulls or pushes other than it’s a personal preference, thus why I opted for a TT to “keep the nose” in front on return legs.

I shyed away from the 90’ TT kit thinking it was the one that’s received the thumbs down in various forum comments and opted for a On30 Peco TT that I’ve modified in part for HO appearances…and it cost more than the 90’ TT kit dang it. Had I known what I know now I could have had a motorized 90’ TT (#933-3171 upgraded version) for the same cost I have into the Peco of a different scale that I’ve had to modify. [|(]