Fabtek delimbing knife?

[Firewoodjoe]

These heads don't delimb on the top very well. They need a knife on top to cut when backing up also. Has anyone done it or are the newer cat heads like this also? Just curious. 

[Skeans1]

The top has a fixed knife if it's not delimbing you will need to sharpen it with a flapper disc as well as putting a back bevel into the inside. If you're talking about down by the butt plate there's no knife there.

[Firewoodjoe]

Yes the fixed knife is sharp. It takes limbs off but it will take a few passes to get the nubs/nots smoother. On the nasty white pine I'll turn the tree around and delimb towards the butt. Takes them right off smooth then turn back around to buck the tree. I know it's the type of head but I'd think someone has done something in all the years it's been out. I really like the head. I can't believe all the bad I heard about them. Keep everything in order and it seems to just cut wood. Still lots of them running around here. 

[Riwaka]

The Waratah H225E has two sets of arms and debarking feeder rollers.

Waratah H225E | Dominate Debarking - YouTube

There was/is? a two roller conversion for the Fabtek head. (If the new rollers (2 roller head) are larger they could have a bit more speed. Other articles mention new knives)

CrossTrac Equipment: Fabtek Heads Get A New Lease On Life With 2-Roller Upgrades - YouTube