MotorMounts

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=100 BGCOLOR="#CCCCFF" TEXT="#080000" bgproperties="fixed" background="05b00640egdysm.jpg"> <div> <FONT SIZE="2" COLOR="#000066" FACE="Arial" ><B>Steve Kiblinger, .. Builder of a Milholland Better Half 2 cylinder VW and Legal Eagle Ultralight Airplane</B></FONT><FONT SIZE="5" COLOR="#000099" FACE="Arial" ><B> </B></FONT><B>    |    </B><A HREF="index.htm" TARGET="_top" TITLE="Steve Kiblinger, .. Builder of a Milholl"><U><B>Home</B></U></A><B> </B><A HREF="fuselage.htm" TARGET="_top" TITLE="Fuselage"><U><B> Fuselage</B></U></A></div> <div> <B>MotorMounts</B></div> <div> </div> </td> </tr><tr> <td valign="top" width=125 BGCOLOR="#0000BF" TEXT="#F7F7FF"> <bR> </td> <td valign="top" height=380 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I>MotorMounts</I></div> <div> <A HREF="id44.htm" TARGET="_top" TITLE="MikePastor"><U><B>Mike Pastor</B></U></A><B> has provided the following section of the motor mount tube... Mike further suggests a nylon bushing (rather than alum or steel) between the early Continental rubber motor mount bushings... </B></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B><IMG SRC="1f4318e0.jpg" border=0 width="561" height="398" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div> <TABLE BORDER="2" CELLPADDING="1" CELLSPACING="1" WIDTH="635" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=CENTER BGCOLOR=#FFFFFF HEIGHT= 19 WIDTH="60"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="60" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 19 WIDTH="60"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="60" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="60"><div> Subj:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> <B>Re: firewall - Motor mount location - page 10... </B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> Date:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> 08/20/2001 7:51:36 PM Pacific Daylight Time</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> From:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> EaglersNests</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> To:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> EaglersNests</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> BCC:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <bR> <bR> <div> <B>Subj: Re: firewall - Motor mount location - page 10...</B> </div> <div> Date: 08/20/2001 7:47:29 PM Pacific Daylight Time </div> <div> <I>From: leonard@fbtc.net (Leonard Milholland)</I></div> <div> <I>Reply-to: leonard@fbtc.net (Leonard Milholland)</I></div> <div> <I>To: EaglersNests@cs.com</I></div> <bR> <div> Hi Guys; </div> <bR> <div> Be forewarned that 4130 plate will work harden on you if you let the tool slip - it has to be kept cutting - if it starts slipping it will become so hard that nothing will cut it. My good quality hole saws go through very well. Leonard</div> <bR> <div> <B>-----Original Message-----</B></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>From: </B></FONT><U>EaglersNests@cs.com</U> <<U>EaglersNests@cs.com</U>></div> <div> <B>To: </B><U>EaglersNests@cs.com</U> <<U>EaglersNests@cs.com</U>></div> <div> <B>Date: </B>Monday, August 20, 2001 4:06 PM</div> <div> <B>Subject: </B>Re: firewall - Motor mount location...</div> <bR> <bR> <div> <B>Subj: Re: firewall - Motor mount location - page 10...</B> </div> <div> Date: 08/20/2001 12:28:22 PM Pacific Daylight Time </div> <div> From: <U>JNBOLDING1@aol.com</U> </div> <div> To: EaglersNests </div> <bR> <div> A good quality hole saw (bi-metal) works well to cut the holes in the plate </div> <div> for the engine mount takes about 20 seconds per hole, keep the saw lubed and </div> <div> at the slowest speed your drill press will work. John Bolding </div> <bR> <div> <I><B>ED note: A bi-metal hole saw wouldn't even put a good scratch on my 4130 </B></I></div> <div> <I><B>plate before it was trashed and the drill press is set on the slowest speed </B></I></div> <div> <I><B>it will go... I used the same quality hole saw's (Milwaukee) and drill press </B></I></div> <div> <I><B>successfully with my tubing cutter... Is there a difference in 4130 plate in </B></I></div> <div> <I><B>the equation here? </B></I></div> <bR> <div> <TABLE BORDER="2" CELLPADDING="1" CELLSPACING="1" WIDTH="635" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=CENTER BGCOLOR=#FFFFFF HEIGHT= 19 WIDTH="60"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="60" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 19 WIDTH="60"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="60" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="60"><div> Subj:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> <B>Re: Firewall - Motor mount location... page 10</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> Date:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> 08/20/2001 8:44:24 AM Pacific Daylight Time</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> From:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> EaglersNests</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> To:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><div> EaglersNests</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="60"><div> BCC:</div> </tD> <tD VALIGN=CENTER WIDTH="560"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="560" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <bR> <bR> <div> <B>Subj: Re: Firewall - Motor mount location... page 10</B> </div> <div> Date: 08/20/2001 8:24:32 AM Pacific Daylight Time </div> <div> <I>From: dannyjoe@insightbb.com (Danny)</I></div> <div> <I>To: EaglersNests@cs.com</I></div> <bR> <div> I find 1 1/4" for the top mount on page 10. I took it to be from the center of the top tube.</div> <div> -Danny</div> <bR> <div> ----- Original Message ----- </div> <div> <B>From:</B> <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><U>EaglersNests@cs.com</U> </FONT></div> <div> <B>To:</B> <U>EaglersNests@cs.com</U> </div> <div> <B>Sent:</B> Monday, August 20, 2001 9:58 AM</div> <div> <B>Subject:</B> Firewall - Motor mount location...</div> <bR> <bR> <div> <B>Ray: </B></div> <bR> <div> <B>I struggled with the firewall... Finally I decided the upper mounts were the critical items to locate and proceeded this way... </B></div> <bR> <div> <B>First I made a template [3/4 inch Pboard] of the engine bolt holes and put a vertical centerline on the template and the firewall... </B></div> <bR> <div> <B>Then I tacked the V braces in place... I cut the upper plate blanks (made a </B></div> <div> <B>cardboard pattern first; eye balled them some) and hot glued them in place... </B></div> <div> <B>I moved the template around on the plate until I had the bolt holes centered </B></div> <div> <B>on the pieces and the bottom plate location figured out... Then I made and </B></div> <div> <B>hot glued the bottom plates in place... The template was used to guide center punching the engine bolt hole locations on the plates... I witness punched where the plates intersected the tubes and removed the plates... </B></div> <bR> <div> <B>I bought end mills for my drill press to cut the holes in the plate and that did not work well (got thru it with lots of mill sharpening expense and Roman finally did the finish cut on the last plate with a four jaw chuck in his lathe)... This is a true mill or lathe operation and I didn't have that... </B><B>Mike Pastor</B><B> is setup to do it for other non machinist builders like myself now... The template was used again when the plates were tacked in with little hole saw plugs on temp engine bolts to center the big thru tubes... </B></div> <bR> <div> <B>About this time you will have noticed a transmission locating lip on the engine bell housing and wonder how the motor mount rubber bushing handles that... Using a mill or Dremel tool with the 1.5 inch cut off wheel remove the lip around the bolt holes to clear the rubber bushings - be sure the surface you leave is flat and smooth as the rubber works on this surface (when tightening the motor mount bolts just crush the rubber 1/8"and STOP)!... Leonard also cuts the engine case severely here on each side - I just couldn't make myself do that - the weight savings will be relatively small... I have drilled the rocker arm shafts and the cam with good weight reduction and eventually will drill out all the non load bearing cap screw heads... </B></div> <bR> <div> <B>I was just able to squeeze the dual Honda CBR 600 ignition coils in that 3-4 inch space below the engine on the front of the firewall... </B></div> <bR> <div> <B>Steve </B></div> <bR> <div> <B>In a message dated 08/20/2001 4:57:05 AM Pacific Daylight Time, </B></div> <div> <B>Rcannon@ra.rockwell.com writes: </B></div> <bR> <bR> <div> Subj:<B>firewall</B> </div> <div> Date:08/20/2001 4:57:05 AM Pacific Daylight Time </div> <div> <I>From: rrcannon2003@yahoo.com</I></div> <div> <I>To: skiblinger@cs.com </I></div> <bR> <bR> <bR> <bR> <div> Steve, </div> <div> I am working on station 1 now. According to the plans and the excellent pictures on your web site, the engine isn't centered vertically on the firewall. The bottom motor mounts appear to be around three or four inches off the bottom tube in station 1. I can't find the exact dimensions for this in the plans. How did you figure out exactly where to locate your motor mounts? </div> <bR> <div> Thank you for your time, </div> <bR> <div> Ray 92-C </div> </td> </tr></table></body>