IBLS Wheel Standard: Difference between revisions

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[[File:IBLS Wheel Standard 1981.jpg|center]]
[[File:IBLS Wheel Standard 1981.jpg|center]]


<TABLE border="0" align="center">
[[File:IBLS Wheel Standard Measurements Chart.png|center]]
  <TR>
 
    <TD>
<br>
      <P></P>
      <TABLE border="1">
       
        <TR>
          <TD>
            <P align="center"><FONT face="Arial">KEY TO DIAGRAM</FONT></P>  </TD>
          <TD>
            <P align="center"><FONT face="Arial">TG<BR><FONT size="2">(Track
            Gauge)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">T<BR><FONT size="2">(Tire
          Width)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">W<BR><FONT size="2">(Flange
            Width)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">F<BR><FONT size="2">(Flange
            Depth)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">R<BR><FONT size="2">(Fillet
            Radius)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">B<BR><FONT size="2">(Back to
            Back)</FONT></FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">G<BR><FONT size="2">(Wheel  
            Gauge)</FONT></FONT></P></TD>
       
          <TD>
            <P align="center"><FONT face="Arial">H*<BR><FONT size="2">(Coupler
            Height)</FONT></FONT></P></TD></TR>
       
        <TR>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">PROTOTYPE</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">56.500</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">5.500</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">1.156</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">1.125</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">0.688</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">53.380</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#ff0000" face="Arial">55.692</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT face="Arial" color="#ff0000" >?</FONT></P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial">1:32 Scaled Prototype</FONT></P>  </TD>
          <TD>
            <P align="center"><FONT face="Arial">1.766</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.172</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.036</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.035</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.022</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">1.668</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">1.740</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT face="Arial"></FONT>&nbsp;</P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#0000ff">Gauge No. 1
            Standard</FONT> </FONT></P>  </TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">45mm<BR>+0/-0.5</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">6mm<BR>+0/-0.5</FONT></P></TD>
          <TD>
          <P align="center"><FONT color="#0000ff" face="Arial">1.5mm<BR>+0/0.5</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">2mm<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.5mm<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">40mm<BR>+0.5/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">43mm<BR>Ref.</FONT></P></TD>
       
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">34mm<br>British</FONT></P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#0000ff">Gauge No. 1
            Standard</FONT> </FONT></P>  </TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">1.772<BR>+0/-.020</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.236<BR>+0/-.020</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">.060<BR>+0/-.020</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.079<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">.020<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">1.574<BR>+.020/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">1.694<BR>Ref.</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">1.125<br>Kadee</FONT>&nbsp;</P></TD></TR>
<TR>
          <TD>
            <P align="center"><FONT face="Arial">1:16 Scaled Prototype</FONT></P>  </TD>
          <TD>
            <P align="center"><FONT face="Arial">3.531</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.344</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.072</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.070</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.043</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">3.336</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">3.481</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT face="Arial"></FONT>&nbsp;</P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#0000ff">3/4 Inch Scale
            Standard</FONT> </FONT></P>  </TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">3.500<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.406<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.094<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.094<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.047<BR>+/-.008</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">3.281<BR>+.020/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">3.470<BR>+0/-.020</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">2.250</FONT></P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial">1:12 Scaled Prototype</FONT></P>  </TD>
          <TD>
            <P align="center"><FONT face="Arial">4.708</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.458</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.096</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.094</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.057</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">4.448</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">4.641</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT face="Arial"></FONT>&nbsp;</P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#0000ff">1 Inch Scale
            Standard</FONT> </FONT></P>  </TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">4.750<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.505<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.125<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.140<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.062<BR>+/-.010</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">4.437<BR>+.020/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">4.690<BR>+0/-.020</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">2.875</FONT></P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial">1:8 Scaled Prototype</FONT></P>  </TD>
          <TD>
            <P align="center"><FONT face="Arial">7.062</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.688</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.144</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.141</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">0.086</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">6.672</FONT></P></TD>
          <TD>
            <P align="center"><FONT face="Arial">6.962</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT face="Arial"></FONT>&nbsp;</P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#0000ff">1-1/2 Inch Scale Standard<BR> 
            &nbsp;North East.</FONT> </FONT></P>    </TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">7.250<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.750<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.156<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.187<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">0.094<BR>+/-.015</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">6.870<BR>+.020/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">7.190<BR>+0/-.020</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT color="#0000ff" face="Arial">4.4375</FONT></P></TD></TR>
        <TR>
          <TD>
            <P align="center"><FONT face="Arial"><FONT color="#339933">1-1/2 Inch Scale Standard<BR>  West
            &amp; South.</FONT>&nbsp; </FONT></P>    </TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">7.500<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">0.750<BR>MIN.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">0.156<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">0.187<BR>MAX.</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">0.094<BR>+/-.015</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">7.120<BR>+.020/-0</FONT></P></TD>
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">7.440<BR>+0/-.020</FONT></P></TD>
         
          <TD>
            <P align="center"><FONT color="#339933" face="Arial">4.4375</FONT></P></TD></TR></TABLE>
      <P>Notes: </P>
      <P>All Dimensions are in Inches, unless otherwise noted.</P>
      <P>H* - Top of Rail to Center-Line of Coupler.</P>
</TD></TR></TABLE>


[[File:IBLS Wheel Standard Flange Detail.jpg|left]]
[[File:IBLS Wheel Standard Flange Detail.jpg|left]]


[[File:IBLS Wheel Standard Flange Measurements.jpg|right]]
[[File:IBLS Wheel Standard Flange Measurements.jpg|right]]
<br>


== Background ==
== Background ==

Revision as of 00:45, 1 February 2013

1981 Version

From the "IBLS Wheel Standards" published in the October 1981 issue of Live Steam Magazine.

IBLS Wheel Standard 1981.jpg
IBLS Wheel Standard Measurements Chart.png


IBLS Wheel Standard Flange Detail.jpg
IBLS Wheel Standard Flange Measurements.jpg


Background

In 1978-1979 there was a "Blue-Ribbon" committee formed of SIX (6) individuals who were asked to meet and put together a defined list of "BLS WHEEL STANDARDS". These individuals, known to many in our Fraternity, were as follows:

The efforts of this group resulted in the BLS Standards, They were presented with the "10th Annual Live Steam Magazine Award" on December 1, 1979 by the late William C. Fitt, then-Editor of Live Steam Magazine.

These "Interim IBLS Standards" have been widely adopted and have become the accepted wheel standards for the hobby.

Endorsements

The following organizations use, recommend or require the IBLS Wheel Standard.

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