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Walthers RTR turntable bridge higher on one end than other

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  • Member since
    July 2006
  • From: west coast
  • 7,652 posts
Walthers RTR turntable bridge higher on one end than other
Posted by rrebell on Sunday, October 18, 2015 1:45 PM

Wanted to know if there was an adjustment on the bridge for height as one side is slightly higher than the other when turned 160 degrees.

  • Member since
    December 2008
  • From: Mount Vernon WA
  • 968 posts
Posted by skagitrailbird on Sunday, October 18, 2015 5:05 PM

I am unaware of any provisions for adjusting the height of one end of the bridge. Ahave you checked the bridge with a straight edge to make sure it is not warped?

Another possibility might be warpage of the pit. Was the pit a tight fit (no poetry intended) in the hole you cut in your platform? If so, it may be squeezed a tiny bit causing the center hole to be out of plumb?

Also, is the rim of the pit absulutely flat against your platform? Maybe some small debris got under the pit rim somehow.

Roger Johnson
  • Member since
    February 2012
  • 596 posts
Posted by charlie9 on Sunday, October 18, 2015 7:22 PM

I gave up on Walthers turntables a long time ago.

Charlie

  • Member since
    July 2006
  • From: west coast
  • 7,652 posts
Posted by rrebell on Sunday, October 18, 2015 11:13 PM

No pit problems, this is their RTR one, a 90' one. We are not talking much of a diference but maybe slightly more than 1/64th, less than 1/32.

  • Member since
    December 2008
  • From: Mount Vernon WA
  • 968 posts
Posted by skagitrailbird on Monday, October 19, 2015 9:21 AM

Yes, the RTR pits are widely believed (known?) to not be warped out of the box. But if the hole in the benchwork was an oval rather than a perfect circle and if the oval at its narrowist cross section was not as wide as the outer diameter of the plastic pit "bowl" installing the pit MIGHT cause it to bend a bit much like a warped pit.

Ant then there are the other "usual suspects" I mentioned earlier.

Roger Johnson
  • Member since
    July 2006
  • From: west coast
  • 7,652 posts
Posted by rrebell on Monday, October 19, 2015 9:56 AM

So lets say the pit was warped, at 180 degrees the table should be at the same point as the lead. Also to note, there is a lot of slop in the hole, at least 1/8" all around doing to the fact it was cut for another table and had to be recut with a tool that is not ment for such things because I needed to limit the vibration when cutting, so no binding at all.

  • Member since
    February 2004
  • From: Knoxville, TN
  • 2,055 posts
Posted by farrellaa on Tuesday, October 20, 2015 9:52 PM

I have the  130' RTR TT and noticed that there is a very slight difference in one end to the other, but maybe only .005-.010". It is still enough to notice a slight bump up when the loco enters the bridge. I actually thought of filing the top of the  rail at the very end of the 'high' rail, maybe back for 1" or so. I don't pay too much attention to it now and some locos are affected more than others. Other than this, I really love the turntable and find it to work nearly flawlessly.

  -Bob

Life is what happens while you are making other plans!

  • Member since
    July 2006
  • From: west coast
  • 7,652 posts
Posted by rrebell on Tuesday, October 20, 2015 10:12 PM

Yeah, I just ran my first engine with everything hooked up. The NW2 Kato unit did not seem to mind the slight bump. I found out that they could have fixed the problem when they glued the bridge but there is nothing you cfan do after market.

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