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Re: Testing Reverse Curve
I have a Lionel GG1 that I should test too...
Bill Lohman wrote:
> Hi Ira and the rest of you,
>
> I'll be glad to help and I'll definitely get out to the Layout and do
> some testing the first Saturday I have open before we take the layout
> down for the show.
>
> Saturdays are currently booked with Westlake High School Football
> playoffs -- currently in San Antonio -- as we have a son on the team.
>
> I plan on testing Lionel and Sunset 3rd Rail Big Boys and a couple of
> other locomotives which have large wheelbases. The longest rigid
> wheelbase loco I have is a Sunset 3rd Rail UP 9030 4-12-2. The
> flanged drivers on mine are on the first and last driver pair with the
> remaining 4 sets blind drivers. Rick and Ricky have the Lionel
> version with flanged drivers in different location. This might be an
> interesting comparison.
>
> I'll test K-line 21 inch passenger cars which are usually pretty
> forgiving on tighter curves as their couplers are attached directly to
> their trucks like Lionel and MTH.
>
> And I'll test Golden Gate Depot 21 inch cars which have coupler and
> truck arrangements that are less forgiving as their design is more
> like 2 rail O and HO scale equipment.
>
> Hope this will help. If anyone is interested in being there the day I
> test or in testing at the same time, please let me know soonest and I
> will try to pick a Saturday so we can attempt team up. Otherwise,
> I'll just show up on a Saturday when we're operating and I'm free.
>
> Rgds, Bill
>
> P.S. Those of you who made it this far, here's some wheelbase trivia
> on some larger locomotives that you might find interesting or might
> put you to sleep..
>
> Note that the Challenger has the smallest and most forgiving
> wheelbase, but does have overhang. The Big Boy and the SP AC-12 Cab
> Forward are the king daddys of overhang. The UP 9000 is the king of
> rigid wheelbase. Even the Union Pacific had to be very careful where
> the deployed these guys.
>
> UP 4-12-2 drivers wheelbase is 7 7/8 inches
>
> Santa Fe 2-10-4 6 3/4 inches
>
> UP FEF 3 4-8-4 5 5/8 inches
>
> Big Boys both engine sets have a 4 3/4 inch wheelbase
>
> SP AC-12 Cab Forward 4-8-8-2 both engine sets have a 4 3/8 inch
> wheelbase
>
> UP Challenger both engine sets have 3 1/4 inches wheelbase.
>
>
>
>
>
>
> On Wed, Dec 3, 2008 at 1:37 PM, Ira Schneider <ira_schneider@iname.com
> <mailto:ira_schneider@iname.com>> wrote:
>
> Hi,
>
> We recently made a change to the layout at The Railyard to allow
> large articulated
> engines to run on track 1.
>
> We used the transition modules to shift track 1 from the D position
> to the E position on the inside curve. This increased the spacing
> between tracks 1
> and 2 so articulated engines running on track 1 no longer hit
> trains running on track 2
> while on the inside curve.
>
> However, this moves track 1 to the E position on the corner, which
> consists of a combination
> of O-72 and O-54 tracks.
>
> We need to find out if there are any trains which cannot run on
> this track.
>
> In the next few weeks, please bring any trains you have which
> require O-72
> radius curves and test them on track 1. This includes scale engines,
> such as the Big Boy, and long passenger cars. We already know
> that a scale
> Challenger can navigate this track. We are concerned that others
> may not be
> so fortunate.
>
> It is important that we understand the implications of this
> configuration before we
> consider setting it up at a future event. We already know that
> with the standard
> configuration, an articulated engine, such as a scale Challenger,
> cannot run
> on track 1 since it interferes with trains running on track 2. We
> need to know
> if this alternate configuration limits other trains from running.
>
> Please let us know if you find any train which fails to run on
> this configuration.
>
> Thanks.
>
>
>
>
> Ira
>
>
>
>
> ------
> TTAT members reflector.
>
>