<p>We'll need to drill out the head either way. With a socket head, starting with a small cup and drilling it larger. With hex head, must make the hole from scratch. (Note, these are the two huge bolts that clamp around the back bike wheel.)</p>
<p>-Ted<br>
(sent mobily)</p>
<div class="gmail_quote">On Nov 26, 2011 12:19 AM, "Mars" <<a href="mailto:martian@mit.edu">martian@mit.edu</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Generally it seems like Home Despot sells hex heads for less than socket heads, and the advantage to hex heads is that they can be tightened with sockets, box wrenches, adjustable wrenches and pliars if needed, where socket heads can only be tightened with hex keys.<br>
<br>
On 11/25/2011 11:26 PM, Ted Moallem wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Things we need for generator construction:<br>
<br>
1) Large, heavy-duty door hinges (1 for each generator)<br>
<br>
2) Large Socket Head bolts, size: 3/4-inch (dia), length: 4 to 5 inches<br>
We need 2 bolts + 4 nuts for each generator<br>
(If can't get socket head bolts this size, 3/4" hex head bolts okay)<br>
<br>
3) what else?<br>
<br>
<br>
MITERS is located in room 115 of MIT’s N52 building in Cambridge, MA,<br>
U.S.A. This is right behind the MIT Museum.<br>
<br>
Use this ramp:<br>
<a href="http://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=MIT&sll=38.844245,-89.24429&sspn=27.213167,57.128906&ie=UTF8&t=h&layer=c&cbll=42.361896,-71.0971&panoid=PNH54NPLBpPIYfLSWB3Yrg&cbp=12,329.39,,0,0.14&hq=Massachusetts+Institute+of+Technology&hnear=MA+Institute+of+Technology,+77+Massachusetts+Ave,+Cambridge,+Massachusetts+02139-4307&ll=42.360539,-71.090074&spn=0.006295,0.006295" target="_blank">http://maps.google.com/maps?f=<u></u>q&source=embed&hl=en&geocode=&<u></u>q=MIT&sll=38.844245,-89.24429&<u></u>sspn=27.213167,57.128906&ie=<u></u>UTF8&t=h&layer=c&cbll=42.<u></u>361896,-71.0971&panoid=<u></u>PNH54NPLBpPIYfLSWB3Yrg&cbp=12,<u></u>329.39,,0,0.14&hq=<u></u>Massachusetts+Institute+of+<u></u>Technology&hnear=MA+Institute+<u></u>of+Technology,+77+<u></u>Massachusetts+Ave,+Cambridge,+<u></u>Massachusetts+02139-4307&ll=<u></u>42.360539,-71.090074&spn=0.<u></u>006295,0.006295</a><br>
<br>
--<br>
______________________________<u></u>__<br>
<br>
Theodore Moallem, Ph.D.<br>
<a href="mailto:moallem@mit.edu" target="_blank">moallem@mit.edu</a><br>
<br>
<a href="http://BlindLead.mit.edu" target="_blank">http://BlindLead.mit.edu</a><br>
</blockquote>
</blockquote></div>