Part 4: Installing the "Upgrade Package" to our Zodiac CH 601 XL: Rear Channel Doubler

Next, we begin work on the rear channel doubler. This is a formed doubler that fits in the rear spar channel to beef up the rear spar attachment point.

The doubler is positioned on the inboard channel:

Steve drills and clecos the channel doubler:

Caleb and Roger drilling out the top main spar:

As we have been installing this "Upgrade Package" we have been verifying the drawings, and making sure that all Upgrade Package parts fit properly, and that there is access to install them. We've had to make a few updates in the process...

Match -drilling the rear spar bolt hole:


Video clip:

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Comment by Stephen Mineart on November 14, 2009 at 10:12am
Question: Why is it necessary to remove the flap entirely to do this install?
Comment by Ron Lendon on November 13, 2009 at 9:10pm
My compliments to you guys for the way you are going about this and the fantastic support / demonstrations you are making. I know you will find ways to improve the process and update the instructions as you go along. All I can say is bravo and put me on the list of buyers of this update package.
Comment by Bill Pagan on November 13, 2009 at 1:49pm
These blogs are priceless. The video even more so. Keep up the good work and info sharing!

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