HO scale 2-10-2 information needed

[NW Modeling List]

Yep.  I meant 16".  The engines should have a 32" stroke.

EdK
----- Original Message ----- 
From: "NW Modeling List" <nw-modeling-list at nwhs.org>
To: "NW Modeling List" <nw-modeling-list at nwhs.org>
Sent: Thursday, April 16, 2009 11:09 AM
Subject: Re: HO scale 2-10-2 information needed



> Ed,

>

> I'm sure you meant 16", right?  According to a response over on the 

> Southern list, the Spectrum throw is a scale 13.5"  It seems rather common 

> to me to see reduced stroke in models - possible to deal with over-sized 

> crossheads and other related parts?

>

> Barry,

>

> Are you sure about the valve gear thing?  I suppose it would make sense 

> for something like a Joy VG, but most gears had their own eccentric, 

> separate from the crank pin.  The crank throw is important (for my purpose 

> at the moment, at least) because it determines the piston stroke.

>

> Kenneth Rickman

>

> NW Modeling List wrote:

>> Measure from the center of the driver axle to the center of the crankpin 

>> screw.  For either of those 2-10-2s that should be (measured with a scale 

>> rule) 32 inches.

>>

>> EdKing

>

> and

> NW Modeling List wrote:

> > Marty

> >

> > The throw of the crank pin would be the distance from the centre of the

> > axle to the centre of the crank pin hole. In a loco valve gear it is

> > related to the movement of the valves in the steam chest above the

> > pistons. Roughly, longer throw = greater movement of valves.

> >

> > That's how it works in the UK anyway(!)

> >

> > Barry Reeves

>

>

> -- 

> Kenneth Rickman - krickman1 at carolina.rr.com

> Salisbury, NC

>

> "Once admit that human life can be guided by reason, and all possibility 

> of life is annihilated" - Leo Tolstoy

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