Flail Mower New member. New owner JD 25 A Flail mower. Help!

   / New member. New owner JD 25 A Flail mower. Help!
  • Thread Starter
#31  
I'm very optimistic that mechanically it will work as designed once the knives are replaced. The question in my mind is whether or not it will work as designed on MY property. I have smaller acreage broken into several areas. I have trees to mow around, or next to, and frankly I am a bit concerned about the offset hitting a smaller tree or a fence post and damaging the mower or tractor. I'm also curious how it will cut in areas where I have dips and other irregularities. If it doesn't work for my property, I'll sell it, hopefully for a profit. If I put a new belt on it, it won't add value like the new hardware on the underside will. That would end up just coming out of potential profit.

I had an idea to help me as an operator to avoid mishaps with that offset. I haven't seen anybody do this, but I'm thinking about putting some sort of flexible marking stick on the front of the tractor that would give me a visual guide for clearance on the rear for that offset. One would still have to be very careful on the turns, but wouldn't that help when moving forward in a straight line?
 
   / New member. New owner JD 25 A Flail mower. Help! #32  
I have seen people put flags on their tractors for really wide implements, etc.
In my usage, I haven't found it to be a problem. I run with my flail offset. You learn it very quickly. I always slowed up mowing along the fences when I first started, but now, I know it very well. I do slow down turning around trees and watch the flail behind me, but I always slow down around the trees. I really like how it doesn't stick out a long way back like a rotary mower does.
 
   / New member. New owner JD 25 A Flail mower. Help! #33  
Leonz, I was hoping to use this belt to test it out cutting once I install the new hardware on the main shaft. Blades, shackles, bolts and nuts, as per your suggestion. I'd really like to evaluate it for my applications before putting any more money in it than is necessary. I saw it run, but it wasn't adjusted to cut properly, and it wasn't my property. Is there a risk of damaging anything if it breaks?

You suggested to use the kevlar belts to better handle shock loads, but don't think you mentioned any sellers. How the heck could you tell the belt was original? What are the clues to look for?

Blades. I remember several sources listed in various posts. What type should I go with? Are duck foot blades the only style Deere recommends for this unit, or was that just OEM and other styles may be considered. I bought it to replace the bush hog. I wondered if heavier blades might be a better choice for me? I have plenty of small volunteer trees that I'll push over with the Kubota 4740, but I anticipate roots being left and possibly sticking up. I always have small branches after a storm that I'd love to be able to just mulch in place.

Does anybody have experience with these?
GE709-P without HardoniteTM * - $1.68 : Hard Hitter, Wear Parts With Muscle



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Hello Ribz,

You can use the OEM belt sure just be sure to have new spares handy to install.
Keep the spares and the belts cardboard sleeve in a heavy black garbage bag to keep
them from being exposed to the ozone in the air.

The JD25A, JD290 and the JD390 have a flail mower rotor that can use both the side slicer and "cup knives" being the proper term for what many refer to as scoop or duck foot knives.

brief flail mower history:
The smaller cup knives for brush mowing were modeled and developed after the larger cup knives used on flail crop shredders for Cotton, Peanut, Potato and Sugar cane stubble after harvesting.


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OK NOW:

You can mount a bicycle flag on the long side of the mower using a muffler clamp of some kind to keep track of it while mowing near fence rows and trees and then you can just mow close by and use a weed wacker to trim it better



You can either flip the mower on its back or raise it above the ground using lots of hardwood blocking to work under it but putting it on its back is faster to do as the entire rotor will be exposed to the light.

Make sure you take the photo images of the flail mower rotors three mounting paddles to the dealer to show them what you need and they will either sell them to you or order them for you and then you can pick them up and install them.


The knife hanger straps and individual knife hanger rings are the same for both types of knives used on these mowers. The mounting bolts are the same also.


I want you to go ahead and purchase the replacement manual and spare parts you need from the local JD dealer as you will not need that many and then go ahead and mow with it after you you change the oil, adjust the mowing height, grease the flail mower rotor bearings and the rear roller bearings and the V belt snubber pulley(there should be a grease fitting on the snubber pulley arm).

It will cost you a bit more for the parts you need but you will have them in your hand and then you can mow the next day if you install them the day you buy them from the local dealer.

Just be sure to buy a small bottle of blue loctite to secure the coarse threaded nuts they will sell you.

to do list:
Oh, if you have some emery paper sand off the rust on the snubber pulley and buy a can of JD green paint to fix it when you get around to changing the belt
 
   / New member. New owner JD 25 A Flail mower. Help!
  • Thread Starter
#34  
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Make sure you take the photo images of the flail mower rotors three mounting paddles to the dealer to show them what you need and they will either sell them to you or order them for you and then you can pick them up and install them.

Thanks again Leonz.

What are the three mounting paddles?

I do enough other business with my dealer that I'd like to save some money on the rotor hardware if I can do so without compromising quality. I can guarantee the dealer doesn't stock them. Buying online saves me a trip to pick them up.
 
   / New member. New owner JD 25 A Flail mower. Help! #35  
Doc, that's good to hear. I appreciate it. What are you mowing with and how long have you been using it?

Out of curiosity, if anyone would like to share how you ended up buying one I'd be interested in hearing it.

I think I had my first exposure through YouTube last year about the time I sold the MF 135. My first reaction was that it looked very interesting. I began to keep my eye out for one locally. I asked around. Nobody around Kentucky uses them. Eventually I got curious enough to do some research on the internet. The more I read, the better they sounded. Price of new units were higher than a bush hog and kept me at bay. Then last week I ran into the guy that I sold the Massey to. He said he was still looking for a bush hog. I had already sold him my woods finish mower with the tractor, but wouldn't sell the bush hog. Well that opened the door of possibility to a flail mower. So while the iron was hot I sold him the hog. I saw this JD 25A within a reasonable distance. Did some research. Made the deal. Here I am.

Now I'm hoping I'll share the positive experiences of the members here after bringing her back to specs. I never liked the job the bush hog did. A lot of gouging left in it's wake. It would knock stuff down, but left long clumps behind. 6' was awkward behind the 135 and better with the Kubota, but still to big and awkward for our property.



I bought mine because I have two dogs who love to follow me around the pastures, or into the forest for that matter, but it is a LOT safer than my brush hog.
 
   / New member. New owner JD 25 A Flail mower. Help! #36  
They are the three weldments that stick out of the flail mower at 120,240 and zero degrees on the flail mower rotor where the mounting straps attache to the short paddles and
and then the mounting rings and cup knives or side slicers are attached to the mounting rings. They do not create a lot of pressure gradient but they allow the use of shorter cup knives and side slicer knife pairs.
 
   / New member. New owner JD 25 A Flail mower. Help!
  • Thread Starter
#37  
They are the three weldments that stick out of the flail mower at 120,240 and zero degrees on the flail mower rotor where the mounting straps attache to the short paddles and
and then the mounting rings and cup knives or side slicers are attached to the mounting rings. They do not create a lot of pressure gradient but they allow the use of shorter cup knives and side slicer knife pairs.

Leonz, I think I got it. Like the paddles on a paddlewheel steamboat. The hanger straps attaches to it, then the shackle, and finally the blade. Now why do I need to show a photo of mine when ordering? Isn't that a standard piece on all the 25 A's or does it change according to the style of blade? Also I notice extra holes on mine. Are those just drain holes to fight moisture?

I bought mine because I have two dogs who love to follow me around the pastures, or into the forest for that matter, but it is a LOT safer than my brush hog.

Molalla, thanks for your reason for buying a flail mower. That's a good one. Got to keep the fur babies safe. We have an Aussie/ Healer mix that is always trying to herd and isn't intimidated or careful enough around vehicles. I have to be very aware of where he is at all times because he will cross my path in a heartbeat.
 
   / New member. New owner JD 25 A Flail mower. Help!
  • Thread Starter
#38  
I just noticed something. The way my blades are oriented, the rotor and blades are apparently spinning the same direction as the tractor tires moving forward.

20170523_144149.jpg

I thought they all chopped in the opposite direction and pulled the material up and over the rotor. ??? I didn't notice the direction when I saw it run. I was concentrating on sounds like bearing noises I guess.
 
   / New member. New owner JD 25 A Flail mower. Help! #39  
I just noticed something. The way my blades are oriented, the rotor and blades are apparently spinning the same direction as the tractor tires moving forward. <img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=511322"/> I thought they all chopped in the opposite direction and pulled the material up and over the rotor. ??? I didn't notice the direction when I saw it run. I was concentrating on sounds like bearing noises I guess.

Normal, 25A spins the same direction as the tires.
 
 

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