[modeleng] Re: radius question

Rich thanks for getting back to me i will supply all the info tonight
many thanks
 Kenny
----- Original Message ----- 
From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Thursday, May 18, 2006 4:46 PM
Subject: [modeleng] Re: radius question


> Hi there Kenny,
>
> Are we talking about something like this...
>
> http://www.compass-house.co.uk/class37.htm
>
> There are various issues with radius, for example:-
>
> * Do you have flanges on the centre bogie wheels, of are the flanges
> reduced in width?
>
> * Do you have nice 'Martin Evans' shaped flanges, or nasty square edged
> ones!?
>
> * How much end play do you have on one axle relative to another (including
> movement due to the other linkages on the bogie)?
>
> * Probably not an issue, but how much angle can you rotate the bogies
> before they start to foul on something?
>
> * Are you looking at track that has any kind of gauge widening on the
> curves?
>
> * Are you wanting to travel round the curves at a nice speed, or
> dead-slow?
>
> To be honest, I'd be tempted to get out a piece of old wallpaper, and draw
> out some curves on the reverse, and start marking out where your bogies
> and wheels would come and use this to work out what kind of radius you are
> looking at.
>
> Note if you don't mind sticking a few pieces of paper together, you can
> use Powerpoint to draw out a couple of massive circles of the right kind
> or radii, of which only a small part will fit on the page, but it is
> enough to give you a pretty accurate representation of the track.
>
> Yours,
>
>
> Rich.
> PS Don't forget as your track radii gets smaller, your loco will struggle
> more and more to haul things round the bends.
>
> On Thu, 18 May 2006, kenny wrote:
>
>> Hello can someone help me with a radius question i have a five inch
>> gauge class 37 loco it is a 3 axel bogie the measurements centre to
>> centre on one axel are 18 inches can someone please tell me what would
>> be the minimum radius she would go round safely regards Kenny Skye MODEL
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