Mowing telescoping boom mower for larger PTs?

[woodlandfarms]

Hey Ken, You got any pix of your wheel motors (how the case is built around the wheel motor and extended beyond the chasis?)

Your 2445 is a 3 pump system, right? One pump for PTO, one for wheels and one for lift steering and dump?

If I where putting on / extending out, I would put a flat peice of steel all the way across the bottom of the tub. Then build the wheel motor box on that. Maybe over engineering but IMO would help with the new stresses. I would figure a way to use your old wheel motors. And just let them fail before you upgrade to higher quality. I don't know your rims, but are they reversible (is one side flush with the outer edge of the tire? If you put a spacer between two of the same tire???

Tired... typing fast... hope I am making sense....

 

[bc realtor]

you may want to try the kirogn.fr web site the cl 93 may work but the price tag is heafty.

 

[wasabi]

Yes, I beleive that's right about the 3 pump system plumbing...

Your fabricating idea is exactly what I was thinking....1/4 steel with shoulders...don't remember about tires being reversible...will find out when i get back to the farm. I'm also looking at smaller wheels/tires to increase torque. Now, aside from a cement/soil mixer i guess i'll need to think up some uses for spare wheel motors....

 

[J_J]

Spare wheel motors, maybe auger head, stump grinder , trencher, saw blade. Maybe give them to your friends , hint, hint.

 

[wasabi]

I know the leverage on weight on booms can get gnarly....i'm trying to measure it....

I have a piece of 3 or 4" square tube about 5' long. I'm thinking of telescoping a 7' length of smaller square tube inside with say a DALTON TR3 Cylinder - 2" Bore X 36" Stroke 2 X 36 3250PSI Tie-Rod Hydraulic Cylinder on top to allow min 7', max 10' action. Double gimbel a 48" mower deck on 4 hard rubber casters off end of boom... quick disconnect capability so telescoping boom has multiple purposes. I've got a small on-hand cylinder for the side to side.

...question is what is the leverage and force generated by 200 lbs of mower deck bouncing at the end of 10' boom pole 45 degrees out in front of a red PT?

 

[J_J]

I know the leverage on weight on booms can get gnarly....i'm trying to measure it....

I have a piece of 3 or 4" square tube about 5' long. I'm thinking of telescoping a 7' length of smaller square tube inside with say a DALTON TR3 Cylinder - 2" Bore X 36" Stroke 2 X 36 3250PSI Tie-Rod Hydraulic Cylinder on top to allow min 7', max 10' action. Double gimbel a 48" mower deck on 4 hard rubber casters off end of boom... quick disconnect capability so telescoping boom has multiple purposes. I've got a small on-hand cylinder for the side to side.

...question is what is the leverage and force generated by 200 lbs of mower deck bouncing at the end of 10' boom pole 45 degrees out in front of a red PT?

What is your lifting capacity at the lift arm pins?

What is the length of the lift arm pins to the center of the front axle?

 

[wasabi]

What is your lifting capacity at the lift arm pins? my 2445 is rated at 1800 lbs. lift capacity at pivot pins would exceed that?

What is the length of the lift arm pins to the center of the front axle? roughly 3'

Tractor weighs roughly 4300 lbs

 

[J_J]

Although your machine will pick up more than 1800 lbs, the 1800 lbs is the safe limit before lifting the back end. So, if your safe lifting limit is 1800 at the 3 ft mark,

Safe limit

3 ft---1800 lbs
6 ft----900 lbs
9 ft----600 lbs
12 ft---450 lbs

So, if my numbers are correct, then you could add a 200 lb mower at the end of a 12 ft boom, and operate straight out front. With the boom at 45 degrees, I am not sure how to figure out the tipping limit. You just might tip it over if that weight is swung to the 45 degree position. You should already know about the pucker factor by lifting max weight and turning, and you know that by returning to straight line lift, you can bring it under control. Someone with math skills other than mine will have to figure out the 45 degree weight limit, and also check my figures.

 

[wasabi]

Although your machine will pick up more than 1800 lbs, the 1800 lbs is the safe limit before lifting the back end. So, if your safe lifting limit is 1800 at the 3 ft mark,

Safe limit

3 ft---1800 lbs
6 ft----900 lbs
9 ft----600 lbs
12 ft---450 lbs

So, if my numbers are correct, then you could add a 200 lb mower at the end of a 12 ft boom, and operate straight out front. With the boom at 45 degrees, I am not sure how to figure out the tipping limit. You just might tip it over if that weight is swung to the 45 degree position. You should already know about the pucker factor by lifting max weight and turning, and you know that by returning to straight line lift, you can bring it under control. Someone with math skills other than mine will have to figure out the 45 degree weight limit, and also check my figures.

sound like ten foot is plenty of extension to deal with. I'm probably pushing the edge with 200 lb 48" pt deck but thought i'd try and take advantage of existing parts. Once it is on the ground the 4 swivel wheels should handle it but on a hill, the wrong way and it could well be a force to rekon with....with this set up, i'm thinkin dualies are not optional...can i run a smaller mower motor off my quick connects or do i have to dumb down via relief valve?

 

[J_J]

sound like ten foot is plenty of extension to deal with. I'm probably pushing the edge with 200 lb 48" pt deck but thought i'd try and take advantage of existing parts. Once it is on the ground the 4 swivel wheels should handle it but on a hill, the wrong way and it could well be a force to reckon with....with this set up, I'm thinking dualies are not optional...can i run a smaller mower motor off my quick connects or do i have to dumb down via relief valve?

What is the GPM through the aux valve, and is it 3000 psi?

What is the rpm of your mower deck? Right now, apparently it is using the PTO GPM for full flow, so if you want it to operate the same, that is what you will need. You might use a smaller hydraulic motor on a smaller deck, maybe 36 in or 42 using a smaller hyd motor off the aux circuit. I know that when I am using the joystick on my 1445, that I have no pressure to the aux valve, and I believe it is because it is downstream of the first two valve used as the joystick, which have priority. The steering also has priority over the FEL.