John Deere 930 rigid knife

1087 Views 11 Replies 6 Participants Last post by Jeff-C-IL, 6 mo ago

CTS2

Discussion Starter · 6 mo ago

What is the point of the blank half sickle at the RHS end of a John Deere knife? It's blunt, so it obviously doesn't cut. Can the knife back simply be cut off short just after the last whole sickle without causing any problems?

The reason I want to do it, is that the aftermarket knife is a Niels Parts laminated knife, it doesn't have the extra hole to be able to fit a half sickle, and it's just about impossible to drill through it. Therefore I have the length of the Niels knife cut off for a whole sickle instead of the blank half. This means it cuts fine, but at the right extent of the knife travel it sticks out of the outside of the comb further than ideal. I would like to cut the whole last section off, as long as it still cuts okay.

Has anyone come across this situation before?

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Jeff-C-IL

· #12 · 6 mo ago

CTS2 said:
Niels Parts knife at far left of its travel, indicating the sickle I propose removing completely.

View attachment 166432

You will likely loose nothing removing that section. With it all the way left as noted, note that it will cut nothing - it does not travel "into" a guard to create the shearing action. It only moves away from the far end guard. I would assume the next section moves to the right fully into the far end guard to do the actual cutting.

My only guess is that that end section might be a "guide" section, to make sure the very end of the knife does not bend up and the next section try to go over the outer guard

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