[modeleng] Re: Gauge Widening

For 7¼" gauge track on curves, go out  1/8 th inch extra, even a 1/16 th,
bit more if curves are extra tight, = 7  7/16.  You will have to give a try,
for extra-extra width.  Usually, most M/E s in N Z go for  7  5/8 ".
Especially in N G .

Bob L.
N. Z.

----- Original Message ----- 
From: "Peter Beevers" <peter@xxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Monday, April 25, 2005 7:39 PM
Subject: [modeleng] Re: Gauge Widening


>
> Peter,
>
>     It's not the flanges that make the going hard on curves (unless
they're
> FAR too big), it's the wheelbase. I have some 30' radius curves for my
> portable track and my bogie coaches go round that (at low speed) OK, but
my
> slate wagon with it's longer wheelbase squeals a lot.
>
>     Gauge widening is a bit of a black art. I haven't got the 7.25" gauge
> society's standards with me at present, but I seem to remember that they
> specify a maximum allowance on curves. With narrow gauge profile wheels
(at
> least 1" thickness), you could go to 1/8" without even noticing it.
>
>     From experience at Swanley, the preference is for a bigger radius
curve
> every time, rather than gauge-widen a sharp one. It's easier to lay,
easier
> to maintain, and doesn't wear the track and your precious wheels half so
> much. We go for a minimum radius of 60' on the main line and aim for much
> more. Of course, space comes into play here....
>
>     Hope this helps....
>
>                               Peter
>
>
>
> On Mon, 25 Apr 2005 00:40 , R.L. Roebuck <rlr20@xxxxxxxxxxxxx> sent:
>
>
> Any chance you could return the treads on the coach with the dodgy wheels,
> rather than overwiden the track to suit it (which may not solve the
> problem, and might make the situation worse for some of your other stock)?
>
>
> Yours,
>
>
> Rich.
>
> On Sat, 23 Apr 2005, The Sheppard Residence wrote:
>
> >I've just spent the day laying 80 yards of track around the LM&WRs first
> >curve (40' radius).
> >
> >One of the coaches (that has particularly deep flanges) is finding it a
> >struggle around the corner.
> >
> >What's the maximum I can widen the gauge at the curve? (I'm using narrow
> >gauge profile on a majority of my stock).
> >
> >Cheers
> >
> >Peter
> >
> >MODEL ENGINEERING DISCUSSION LIST.
> >
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> >
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