This is the first place I've come across where the Orndoff video says something that is really at-odds with what the plans say.
In the video, when George is fitting the upper cowl, he drills some temporary alum strips and uses spacers so the front edge of the cowl is sitting 1/8" above the rear spinner plate. I quote: "...this held the cowling an eighth of an inch higher than the spinner plate".
Now, the plans definately say "Block the forward end up to be 1/8" to 3/16" BELOW the spinner to allow for future engine sag" (I added the capital letters for emphasis).
The only way both of these can be correct is if the spinner is 1/4" thick (so 1/8" above the spinner plate is the same as 1/8" below the surface of the spinner). The spinner is less than 1/8" thick.
Ordinarily I'd just follow the plans without question, but other have testified, and I've found, that the methods in the Orndoff videos are never wrong.
What's the deal here? Has the cowling design changed since the orndoff video was made? Should the top forward edge of my cowl be above, below, or flush with the outside surface of my spinner?
In the video, when George is fitting the upper cowl, he drills some temporary alum strips and uses spacers so the front edge of the cowl is sitting 1/8" above the rear spinner plate. I quote: "...this held the cowling an eighth of an inch higher than the spinner plate".
Now, the plans definately say "Block the forward end up to be 1/8" to 3/16" BELOW the spinner to allow for future engine sag" (I added the capital letters for emphasis).
The only way both of these can be correct is if the spinner is 1/4" thick (so 1/8" above the spinner plate is the same as 1/8" below the surface of the spinner). The spinner is less than 1/8" thick.
Ordinarily I'd just follow the plans without question, but other have testified, and I've found, that the methods in the Orndoff videos are never wrong.
What's the deal here? Has the cowling design changed since the orndoff video was made? Should the top forward edge of my cowl be above, below, or flush with the outside surface of my spinner?