Lift Arm Length

Cordiale

Member
I use an International 574 for my ploughing, the lift arms are 750mms long and when I push the plough as far right as possible the front disc arm fouls the lift arm. I have been told to use longer arms to overcome the problem would this be the best solution or would it be better to lengthen the present arms by cutting at the cranked bit and welding 4 inchs on and welding the balls back on? Any comments would be gratefully received.
 

Bury the Trash

Member
Mixed Farmer
imo, Getting longer arms would be a much better solution , much easier and it means that the original arms can be kept unspoilt for another time.
 

Cowabunga

Member
Location
Ceredigion,Wales
I use an International 574 for my ploughing, the lift arms are 750mms long and when I push the plough as far right as possible the front disc arm fouls the lift arm. I have been told to use longer arms to overcome the problem would this be the best solution or would it be better to lengthen the present arms by cutting at the cranked bit and welding 4 inchs on and welding the balls back on? Any comments would be gratefully received.
Are you sure that longer links would help? I’m not convinced but I don’t have the kit in front of me. You are presumably talking about the actual lower links rather than their lift rods/arms or are calling both lower link and lift rods ‘arms’?

Pictures would help.
 

Cowabunga

Member
Location
Ceredigion,Wales
What you need is a wider cross shaft on the plough, surely? Slightly longer links will not significantly alter the clearance sideways between your disc coulter and lower right hand link arm.

Maybe I’m missing something here? A picture would help.
 

bravheart

Member
Location
scottish borders
Think I'm a bit confused as well. A few options to try.
Take it you are aware that the drop arms can screw out or in or pull a pin out for float.
The lower link arms have two mounting points on the back axle, try the other one. There's also two holes for the drop link pins have you tried the other ones.
Have you tried different top link holes on either the plough or the tractor, they will alter the lift geometry and may stop the plough fouling.
Pictures and plough model please.
 

rick_vandal

Member
Location
Soft South
I use an International 574 for my ploughing, the lift arms are 750mms long and when I push the plough as far right as possible the front disc arm fouls the lift arm. I have been told to use longer arms to overcome the problem would this be the best solution or would it be better to lengthen the present arms by cutting at the cranked bit and welding 4 inchs on and welding the balls back on? Any comments would be gratefully received.
How far right are you going? Zero cut, taking a single? What distance between your rear tyres? How wide your plough? Your problem is not my problem!
 

Mydexta

Member
Location
Dundee/angus
I had same problem with my b275 and ransomes plough.

the bottom of disc stalk would catch where the drop arms attach to the lift arms.

i swapped to a set of replica mf 135arms, which are 4” longer than what I had on.


this cured the problem, and also helped when moving plough to take a single furrow
 

Cordiale

Member
I had same problem with my b275 and ransomes plough.

the bottom of disc stalk would catch where the drop arms attach to the lift arms.

i swapped to a set of replica mf 135arms, which are 4” longer than what I had on.


this cured the problem, and also helped when moving plough to take a single furrow
Do you think DB 1200 arms which are 1metre long would be okay? That would push the back about 7 inches or does the further you get away from the tractor create more problems? I seem to remember a picture of Graeme Witty ploughing, and it looked like he had lengthened his arms on a Ford.
 

Cowabunga

Member
Location
Ceredigion,Wales
What you should have is, when attached to the implement, when you take straight lines down the lower link arm length and extend those lines forward, they should meet at or ideally just ahead of the tractor’s front axle. This would provide the optimum self centring of the implement in work. The length of the lower link has no bearing on this. What matters is to match the width of the implement cross shaft with a narrowed distance between the links attachment points at the axle end. There are standards that are applied here which pertain to the category of links fitted and they are universal between tractor and implement brands.
I had a Cat1 Ransomes TS90 plough many decades ago and never had a problem with the front disc Coulter fouling the links with any Cat 1 linkage tractor. Not even with tractors that had Cat2 alternative ball ends.
Match ploughs are mostly bespoke built and modified of course and maybe that is where the issue lies?
 

Pennine Ploughing

Member
Mixed Farmer
What you should have is, when attached to the implement, when you take straight lines down the lower link arm length and extend those lines forward, they should meet at or ideally just ahead of the tractor’s front axle. This would provide the optimum self centring of the implement in work. The length of the lower link has no bearing on this. What matters is to match the width of the implement cross shaft with a narrowed distance between the links attachment points at the axle end. There are standards that are applied here which pertain to the category of links fitted and they are universal between tractor and implement brands.
I had a Cat1 Ransomes TS90 plough many decades ago and never had a problem with the front disc Coulter fouling the links with any Cat 1 linkage tractor. Not even with tractors that had Cat2 alternative ball ends.
Match ploughs are mostly bespoke built and modified of course and maybe that is where the issue lies?
I think the original post was for match Ploughing and the question this is applying to match Ploughing, and with due respect what you say is correct for farm commercial work, it don't apply to match Ploughing
 

Cowabunga

Member
Location
Ceredigion,Wales
I think the original post was for match Ploughing and the question this is applying to match Ploughing, and with due respect what you say is correct for farm commercial work, it don't apply to match Ploughing
Which is why I have the highlighted sentence at the end. Nobody can really tell what the issue is with a plough that is probably unique to the user without seeing it and its geometry. However the basics of the load lines I describe are universal to all free swinging ploughs and tractor/implement combinations.
 

Mydexta

Member
Location
Dundee/angus
Do you think DB 1200 arms which are 1metre long would be okay? That would push the back about 7 inches or does the further you get away from the tractor create more problems? I seem to remember a picture of Graeme Witty ploughing, and it looked like he had lengthened his arms on a Ford.

What you have to remember is by using longer lift arms, all plough controls are further away.
Also, in my situation, it made the tractor lighter in the nose as any extra weights are now further away than before as well
 

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