The shelix head was delivered today, and I got it installed. I followed these instructions. http://www.holbren.com/misc/DW735.pdf
It took a couple hours with breaks every now and then.
After I got the machine put back together I started it up to run a few minutes. Right away I noticed the noise level was decreased significantly. The blower is the real noise maker now.
I ran a piece of cherry 1.75" thick X 12" wide that I had previously run with the original blades. What a difference. The board actually shines. I then ran a 1/4" piece of curly maple through it. No tearout at all. I am really impressed with the Byrd Shelix head.
The noise level has dropped to the point where you can use it without wearing hearing protection. Amazing.
Here are a few pics. The first two are the cherry after the old blades. The next is the same board after the Shelix.
Installation wasn't without some difficulty. Getting the old head out required a piece of wood and a hammer. Wood and hammer to get the new one in also.
I had one chain gear that decided to be stubborn. Had to use a small gear puller to get it off. You need snap ring pliers. Compression type for one side, expansion for the other. A 22mm socket and a 5mm allen wrench.
Supplied is a sheet of thick plastic that you wrap around the cutter head when installing it. It is to keep the carbide cutters from touching the planer casting, and to keep you from cutting yourself. I'm wearing a bandaid on my right thumb anyway. Those cutters are danged sharp.
This is a super upgrade for the Dewalt 735. Although it leaves a very nice surface, there are still some very minute ridges down the wood. They can be easily removed with a card scraper.
So, if you are tired of the HSS knives getting dull and tearout on your first board going through the machine with new blades in it, I highly recommend this upgrade. I'm a happy woodworker.