Three years

It appears that I am running behind my anticipated schedule. I expected to be finished within 2 years or 2000 hours, it is now 3 years from the time I received the plans and I have performed1550 hours of hands on work on this project. I let myself get distracted, there are no excuses. I have begun dual instruction in an Extra 300 in preparation of flying the One Design. I expect it will be flying soon.

The motor is a Lycoming roller cam IO360 with a front mounted prop governor. The heads were ported and high compression pistons were installed. It has a Light Speed Ignition, Air Flow Performance Injection and Sky Dynamics 4 in 1 exhaust. Just some basic enhancements, nothing unique. It has been run 10 hours on the dyno before it was shipped.



I installed the prop governor and the engine mount. The Lord elastomer mounts went on relatively easy. I have read stories about how hard it is to install a dynafocal mount to a Lycoming engine. I made a simple little tool to deflect the Lord mounts so that the AN7 bolts would install with very little effort.  It worked better than I had anticipated.




Here it is deflecting the upper right mount while the AN7 bolt was installed.



All of the rubber mounts were installed within 15 minutes. I started with the lower right mount and then installed the upper left mount, lower left and then upper right which is shown above.

I utilized a 7/16 diameter bullet in front of the AN7 bolt. I deflected the mount sideways until the bolt went in with firm finger pressure. I torqued the bolts to 250 in-lbs as they were being installed. I torqued them all to 500 in-lbs after all of the mounts were installed.
 
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Comments

  • 12/23/2010 9:18 AM Doug S wrote:
    Looking great !!! - now the excitement begins.
    Where did you get the idea / plans for the mount compressing tool?
    How high did you go on the compression- On my 540 I am leaning toward 9.5:1 as a compromise between power & durability, but am always curious to hear thoughts of others.
    Reply to this
    1. 12/23/2010 5:43 PM JP wrote:
      It doesn't compress the mount it only slides it sideways but does hold the two rubber pieces in the mount. It was the simplest design I thought of with the material I had on hand. Pistons are 10:1, I consider it a compromise, 12:1 are available.
      Reply to this
  • 3/20/2011 11:48 AM Dan Rihn wrote:
    JP,
    Haven't checked upon you in a while. Looking very good!
    I really like your Lord Mount tool. Those are always a bear. Your tool is really a cool idea. You should write it up and send it to the EAA Sport Aviation magazine.
    Can't wait to see your recent progress.With luck you'll be flying soon.
    Good luck,
    Dan
    Reply to this
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