Lely centerliner superbowl

[Richard Devon]

What causes a centerliner to throw too much fert behind the tractor - it looks greener where the tractor has been than out over the 20m bouts?

Too high, too low, incorrect pitch?

 

[Zebbedee]

What causes a centerliner to throw too much fert behind the tractor - it looks greener where the tractor has been than out over the 20m bouts?

Too high, too low, incorrect pitch?

Incorrect pitch I would say

 

[Jon]

Are your discs spinning at the correct speed ?

 

[Richard Devon]

Are your discs spinning at the correct speed ?

As far as I know.....brother changed them over when we went from 12 > 20 and assures me its the correct ones - and its him who has striped the corn (or so it seems to me)

 

[Jerry]

Any change in make/brand of product? Lots of variables..

 

[Jon]

We were told when we were on 18 meter tramlines discs at 1035 rev on the control box, that was roughly 530 pto revs. We should see as a rough guide prills on the next tramline over.

 

[Richard Devon]

Incorrect pitch I would say

OK, I was sure it was level when it was hooked up.....bearing in mind that for it to be behind the spinner then its at the end of its travel - so to speak

 

[Richard Devon]

Any change in make/brand of product? Lots of variables..

ahhh well....the fert was variable.....he did say that he had trouble getting some of it to "run"....maybe its that?

 

[Aftermaths]

OK, I was sure it was level when it was hooked up.....bearing in mind that for it to be behind the spinner then its at the end of its travel - so to speak

Our old lely was usually a 5 degree pitch for most everything at 20m + so if you have it level then that's probably what's going on

 

[An Gof]

Have you changed the gears?

 

[KB6930]

When I used to run one of them it was set level for every fert at 20m and was fine only time I stripped with it was when I was told by someone to run it more up at the back o think it was spreading heavy behind the tractor because it was then throwing too far but can't remember.

Just borrow a set of trays to find out .

Also could be dusty fert not throwing far enough making it greener

 

[thesilentone]

Double overlap spreader, the only way to get any accuracy is to carry out a tray test.

Most spread patterns can be altered by tractor revs (disc speed) spreader fin length, and flow rate. However the density and size of the prill is the ultimate dictator. Your fert needs to be as consistent as possible, whether that be big or small prill.

So, get the trays out, make a double run, and see how consistent/inconsistent it is. Volume and distance spread are completely different things.

Based on the information you have provided, it simply sounds like the overlap is wrong based on the ability of the fert to spread that wide.

Just a small point, you haven't put new fins on recently and put them on the wrong side, the Centerliner runs the opposite way to most others.

If you're stuck for gear to do the tray test, use egg trays to catch the fert, and measure them all individually into an old syringe.

 

[Lincsman]

The guide used to be a few granules in the next tramline wheeling, and usually tilted up.

 

[Richard Devon]

thank-you everyone for all the advice. Its much appreciated.

 

[Nearly]

Top link as short as hell.

Check direction of vanes.

 

[Richard Devon]

Top link as short as hell.
View attachment 952076

Check direction of vanes.

Right, are you heaving it 20m?

 

[thesilentone]

Top link as short as hell.
View attachment 952076

Check direction of vanes.

Doing that will reduce the spread width, it's about ballistic velocity and prill density.

 

[An Gof]

Top link as short as hell.
View attachment 952076

Check direction of vanes.

That seems to be running at a hell of an angle. Had two centreliners and got on well with them. I always thought they were nearly impossible to stripe with.

 

[nelson]

Doing that will reduce the spread width, it's about ballistic velocity and prill density.

not with a centre liner it want. be using one for 20 years never had a problem with uneven spreading. theres an angle indector on the machine

 

[Nearly]

Doing that will reduce the spread width, it's about ballistic velocity and prill density.

Read the manual.
That's what it says for 24m.
That's the limit for these.

not with a centre liner it want. be using one for 20 years never had a problem with uneven spreading. theres an angle indector on the machine

Thanks.
I've hydraulic top link so it could be a bit steep but it reaches 12m each side.