So, do I need another PTO shaft?

/ So, do I need another PTO shaft? #1  

kebo

Elite Member
Joined
May 16, 2006
Messages
2,931
Location
Lexington, SC
Tractor
2001 John Deere 790 4x4, bar tires
I bought a new to me 5ft KK Rototiller last January and just started using it today. The area I was using it had a slight hill on one side, and as I was going up it, the two sections of the PTO shaft separate as the front of the tractor was pointing up the hill. How much overlap should there be? Obviously, if I don't have enough, it looks like I'll have to buy a new one and cut it down to the correct length. The seller had used it with a Ford 8N so I guess he cut it suit that tractor. The PEC that I have on mine might be part of why it separated, since it moves the attachment back about 3 1/2 inches. I do have a PTO shaft extender that I use with other PTO powered attachments. In theory, that should make up the extra distance it moves it rearward. On level ground, it did just fine though.
 
/ So, do I need another PTO shaft? #2  
Yes, I think they say 6" but one of mine is only 4" but it doesn't follow the contour of the ground. I did have one pto shaft too short and bought a long one and use part of the long one and part of the short one (other two halves were also put together). They don't meet in the middle but I couldn't see a problem with that.
 
/ So, do I need another PTO shaft? #3  
6" is a good rule of thumb. 3" is fine if it is rigid 3 pt attachment and short shaft. If the 3rd point is not rigid such as a tail wheel mower that allows the implement to pivot which may take additional overlap to maintain engagement. For instance - on my tiller I would have no problem with 3" of engagement at maximum extension but on my Bush Hog with a much longer shaft and flexing length as I go through the field I am not comfortable with even 6" of engagement.

Since you have the PEC system I suggest you use a PTO shaft extender.
 
/ So, do I need another PTO shaft?
  • Thread Starter
#4  
6" is a good rule of thumb. 3" is fine if it is rigid 3 pt attachment and short shaft. If the 3rd point is not rigid such as a tail wheel mower that allows the implement to pivot which may take additional overlap to maintain engagement. For instance - on my tiller I would have no problem with 3" of engagement at maximum extension but on my Bush Hog with a much longer shaft and flexing length as I go through the field I am not comfortable with even 6" of engagement.

Since you have the PEC system I suggest you use a PTO shaft extender.

I will try to see if I can measure the PTO shaft this weekend and determine how much/little overlap there is with it now. Btw, reread my post, I am using a PTO shaft extender. Maybe it wasn't clear in the wording, but I was using it with the rototiller. Thanks.
 
/ So, do I need another PTO shaft? #5  
Here is the extender that I've used. Seems to work fine for only $20.

Pto Adapter 1-3/8 X6 Spline Male X 1-3/8X6 Spline Female Pto Adapter

Not sure if you could use two of them back-to-back, however. There may be a little too much slop. There are ones made that are up to 11" long but I think they are bolt on. You'd need a hole in the PTO shaft to mount it - check the tractor's PTO shaft. There was a discussion on this subject a little while back on TBN,
 
/ So, do I need another PTO shaft? #6  
I have at least 6" to 8" overlap on all my drivelines. You could take the female half to tractor shop and have the replace the shaft with a longer one. A lot cheaper than buying a new complete shaft.
Jeremy
 
/ So, do I need another PTO shaft? #8  
I would size the PTO shaft so you don't have to use the adapter - Mine has a little bit of slop, too.
 
/ So, do I need another PTO shaft? #10  
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/ So, do I need another PTO shaft? #11  
EveryThing Attachments.com (A TBN advertiser) has a video showing one way to measure for a PTO shaft and then cutting.
 
/ So, do I need another PTO shaft? #12  
wow.. a 5' rototiller on a ford 8n.. what a miserable dissapointment that must have been unless he was running in constantly worked fluffy soil like peat or potting soil, or styrofoam beads.. or sugar sand.. :(


soundguy
 
/ So, do I need another PTO shaft?
  • Thread Starter
#13  
EveryThing Attachments.com (A TBN advertiser) has a video showing one way to measure for a PTO shaft and then cutting.

I have watched it, great video!! If I do wind up having to buy a new PTO shaft and cut it to fit, I'll be sure to watch it again BEFORE I start cutting on it. :thumbsup:
 
/ So, do I need another PTO shaft?
  • Thread Starter
#14  
wow.. a 5' rototiller on a ford 8n.. what a miserable dissapointment that must have been unless he was running in constantly worked fluffy soil like peat or potting soil, or styrofoam beads.. or sugar sand.. :(


soundguy

Maybe the 8N wasn't up to the challenge and that's partly why he decided to sell it? The seller did mention that he used it on some food plots, more than likely these were places that had been disked up before.
 
/ So, do I need another PTO shaft? #15  
yep.. N's have too high of a ground speed to roto till unless they have a rear post tranny like an everette or howard ( sherman won't help )... they disc and plow all day though.

IF I did roto till with an N.. it would be a 4' tiller, and it would be in soil that is constantly worked and turned and already loose... and I'd have my eye out for another tractor every day.. :)

soundguy

Maybe the 8N wasn't up to the challenge and that's partly why he decided to sell it? The seller did mention that he used it on some food plots, more than likely these were places that had been disked up before.
 

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