john in la
Well-known Member
Tell me the details of measuring and cutting a PTO shaft for a brush cutter.
Thanks
Thanks
- Thread starter john in la
- Start date
old
Well-known Member
- Location
- Camdenton Missouri
All depends on the PTO shaft type. The sort of triangle type you just cut off sy an inch or so at atime on both parts of the shaft till you have it as you need. Some of the older round tube type with a square male part you have to grind off the weld of the pipe and pull it off the yoke and then cut off what you need and weld it back onto the yoke keeping the U-joints in time
Russ from MN
Well-known Member
- Location
- Bemidji MN
When you cut it off make sure it's short enough so when you drive down through a ditch it doesn't deadhead. You could simulate this by raising the cutter up high and then put blocking under the tail wheel and then let the front down.
grandpa Love
Well-known Member
Hopefully it ain't too scientific!! We cut about 3 inches off both parts of a triangle shape one on a woods mover yesterday
Brendon-KS
Well-known Member
- Location
- Goessel, KS
What Old said is worth repeating in a bit more detail as it is critical to be aware of. Some telescoping shafts have only a relatively short section of the female portion of the shaft that actually engages with the male portion and this is connected to the yoke by a section of round tube. These shafts must be shorted as Old described because if you just trim the end off you would be shortening the portion of the shaft where the two pieces are in contact which would be a problem. (Potentially a very serious problem if too much is removed.) With other styles of PTO shaft the female portion has the same inside shape the entire length and these can be simply cut off at the end.
To prevent vibration and binding make sure there is still a healthy overlap (no less than about 5") of the male and female portions when the shaft is extended as far as it physically can be when connected. Take a little off at a time to make sure you don't sacrifice the extended overlap length for a more-than-necessary amount of clearance when the shaft is compressed as much as your tractor/mower combination requires.
To prevent vibration and binding make sure there is still a healthy overlap (no less than about 5") of the male and female portions when the shaft is extended as far as it physically can be when connected. Take a little off at a time to make sure you don't sacrifice the extended overlap length for a more-than-necessary amount of clearance when the shaft is compressed as much as your tractor/mower combination requires.
old
Well-known Member
- Location
- Camdenton Missouri
The triangle type is the easy type to cut down since #1 it only fits together one way plus it is the same from one end to the other. The older type PTO shafts had an area that is maybe 2 or 3 inches long where the male part work and if you cut the female part to much you will have major problems
john in la
Well-known Member
Thanks guys.
I found a utube video that said you want the shaft 2 to 3 inches away from the tractor pto when the shaft is fully collapsed. This will give you 4 to 5 inches of travel when hooked up. Right now I can hook up my shaft but it is a tight fit so I will take off 2 to 3 inches off.
That should give me way more than 5 inches of contact area when extended.
My old shaft was the kind that only the end piece made contact. I will have to look at this new shaft and see what type it is.
Thanks again.
I found a utube video that said you want the shaft 2 to 3 inches away from the tractor pto when the shaft is fully collapsed. This will give you 4 to 5 inches of travel when hooked up. Right now I can hook up my shaft but it is a tight fit so I will take off 2 to 3 inches off.
That should give me way more than 5 inches of contact area when extended.
My old shaft was the kind that only the end piece made contact. I will have to look at this new shaft and see what type it is.
Thanks again.
37chief
Well-known Member
- Location
- California
I cut mine 3 times, and is was still too short. Stan
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
On older type pto shafts(sq or rectangular) one can shorten but on end with female part leave heavier part intake(slip sleeve) & just shorten the thinner round tube. Upon assembly one must take care to keep u-joints in phase(time).
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