0-MAG-4WHEEL-HP 4 Inch BattleKit Hard Plastic Robot Wheel - 19-Tooth Sprocket
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">Robot builders often find that the trickiest part of a robotics project is making
the wheels. First you need to find a suitable tire/wheel combination, then you
must figure out a way to attach a sprocket so that it will handle the torque
of a geared-down drive motor. Our wheel/sprocket/bearing combination will solve
those problems for you!</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">Assembled with:<br>
Colson Performa wheel 4 x 1.5in.<br>
Custom one-piece hub/sprocket<br>
Bronze bearing pressed into the 19-tooth sprocket<br>
Ball bearing with insider diameter of 0.5in</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">The inner
race of the ball bearing extends into, (but does not touch), the inside diameter
of the hub. The width of the assembly is 2.23 to 2.24&quot; which fits
perfectly into our 2.25&quot; wide <a href="battlekit_drive_modules.html" target="_top">modular
drive units</a> and <a href="battlekits.html" target="_top">robot kits</a>.
Use washers or shaft collars to locate your wheel on your axle if the axle
is wider than 2.3&quot;, (this also keeps the bearings from working their way
out of the wheel).</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">This combination of components weighs in at just 1.0 pounds - or 4.0 pounds
for 4 wheels. We believe that this is the lowest-cost and lightest wheel/sprocket
combination available.</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">The 4-19HP is a special hard plastic wheel that reduces traction but also makes turning easier and it reduces power consumption while turning. Two 4-19HP wheels can be used in combination with two regular high-traction 4-19 wheels. This will give a good combination of traction and ease of turning in robots that do not require uncompromised traction. Educational and experimental robots along with robots intended to operate on carpet work best with two, (or even four), hard plastic wheels.</font></p>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td><font color="cccccc" size="2" face="Arial, Helvetica, sans-serif">Wheel Diameter </font></td>
<td><font color="cccccc" size="2" face="Arial, Helvetica, sans-serif">Sprocket Teeth </font></td>
<td><font color="cccccc" size="2" face="Arial, Helvetica, sans-serif">Speed (MPH)* </font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">4in. Hard Plastic </font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">19</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">9</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">4in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">19</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">9</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">5in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">19</font></td>
<td><p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">12</font></p> </td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">5in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">28</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">8</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">6in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">19</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">14</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">6in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">28</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">10</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">8in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">28</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">13</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">8in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">42</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">9</font></td>
</tr>
<tr>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">10in.</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">42</font></td>
<td><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">11</font></td>
</tr>
</table>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">* Indicates the speed at which a vehicle would travel if the wheel was driven with a 9-tooth sprocket which is revolving at 1700 RPM. (As they are in our <a href="battlekits.html" target="_top">kits</a> when using our E30-150 motors and our speed reducer).</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">For use with #35 chain.</font></p>
<p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">Contains one wheel assembly. </font></p>