Weaving GD user thread

Gone Shooting

Member
Arable Farmer
Location
hereford
The pronto is fine on our heavy ground - was wondering about the transport wheels on the GD - if we slug pellet when a little damp you can see where the quad has gone in the growing crop.
 

kiwi

Member
What hydraulic flow rate requirement do operators of the 4.8 metre drills have on their tractors?
We have just received our 4.8 metre drill and are finding it easy to pull but having trouble with lifting the drill up and down while the fan is operating. The up and down Rams go 50 percent slower when the fan is running. Have all spool valves at 100 percent except the fan.
 

clbarclay

Member
Location
Worcestershire
We are using a case puma 155 which is supposed to have 100 litres per minute.
Max flow through a single half inch spool valve is about 100 L/min, so without the fan you can use all the tractors hydraulic power lifting the drill.

A hydraulic fan typically consumes around 40 L/min. That would only leave about 60 L/min to lift the drill.
 

kiwi

Member
Yep that explains it well and you have to wonder about design of the system of hydraulics, if a reasonable horsepower tractor can't maximise the functions of the drill on the GD. What you are saying is that a flow rate of 140 l/min would be needed to maximise the lifting while maintaining airflow.?
 

Badshot

Member
Location
Kent
Thank you , and any initial findings/thinking around blackgrass emergence ?
In the winter wheat it's very difficult to find any, even in known areas.
The winter beans are clean and growing like bloody hell, I'd hoped for less vigorous haulm growth, doesn't look like that's happening.
The osr is pretty good, but in the worst two fields there's a very low levelof bg, the initial flush was taken care of well by centurion max, followed by propyzamide, possibly a bit early with hindsight, then there's been another flush come from deeper which we applied crawler but I don't think there's been enough rain since to make it work properly.
Won't know till harvest really now.
It's going wheat next and will get belt and braces.
Any freshly shed seed seems relatively easy to get with pre ems, any deep seed in the soil is the problem as it still comes up for years after
 

Farmer Roy

Member
Arable Farmer
Location
NSW, Newstralya
Any freshly shed seed seems relatively easy to get with pre ems, any deep seed in the soil is the problem as it still comes up for years after

That is just one of the many other benefits of zero till - all your weed seeds are left on the surface, to be eaten by ants / insects, don't germinate, are easily controlled etc etc
Not buried only to remain viable for years . . .
 

clbarclay

Member
Location
Worcestershire
Yep that explains it well and you have to wonder about design of the system of hydraulics, if a reasonable horsepower tractor can't maximise the functions of the drill on the GD. What you are saying is that a flow rate of 140 l/min would be needed to maximise the lifting while maintaining airflow.?
The current Puma 150 can be speced with up to 160 l/min hydraulics. Even 100 L/min is a far cry from where tractors used to be, I use a drill with hydraulic fan on a 70 L/min CCLS tractor quite happily. The only time its been a problem was when I used a MF2680 to finish a field which only had a 55 L/min gear pump open center hydraulics and I could hear the fan speed drop every time I turned the steering wheel.


Another point is do you really need to power implement hydraulics at maxium flow rate?

The first tractor we had with closed centre hydraulics kept cracking the DP7 in the same place untill I turned down the flow rate to the turn over ram. Taking a couple of seconds longer did not slow down turning around at the headlands and was a lot kinder on the machinery. I have pressure detent spools on the main tractor now, I never change the pressure they detent at and just reduce the flow rate if a spool trips out too soon.

I find it mildly irritating to hear fan speed fluctuate at the headlands, but in practice it doesn't seem to make a difference to the seed.
 

jack6480

Member
Location
Staffs
What hydraulic flow rate requirement do operators of the 4.8 metre drills have on their tractors?
We have just received our 4.8 metre drill and are finding it easy to pull but having trouble with lifting the drill up and down while the fan is operating. The up and down Rams go 50 percent slower when the fan is running. Have all spool valves at 100 percent except the fan.

Have the lift arms as priority? Or a few more revs maybe.
 

Jon

Member
Location
South Norfolk
In the winter wheat it's very difficult to find any, even in known areas.
The winter beans are clean and growing like bloody hell, I'd hoped for less vigorous haulm growth, doesn't look like that's happening.
The osr is pretty good, but in the worst two fields there's a very low levelof bg, the initial flush was taken care of well by centurion max, followed by propyzamide, possibly a bit early with hindsight, then there's been another flush come from deeper which we applied crawler but I don't think there's been enough rain since to make it work properly.
Won't know till harvest really now.
It's going wheat next and will get belt and braces.
Any freshly shed seed seems relatively easy to get with pre ems, any deep seed in the soil is the problem as it still comes up for years after
Thank you.
 

kiwi

Member
Thanks for the thoughts on the hydraulics. I have tried taking fan off priority but wasn't successful as the fan locked out . The way I have it set at the moment I get constant fan speed but just have to pause the tractor momentarily as I lift and drop the dril back in.
 

SFI - What % were you taking out of production?

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    Votes: 3 1.6%
  • 100% I’ve had enough of farming!

    Votes: 7 3.7%

Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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