Self Built Central Tyre Inflation System

Shovelhands

Member
Location
Sunny Essex
Some of the smaller Ingersoll Rand road compressors had a belt driven air end (screw compressor), this in theory could be fitted to a machine and belt driven from the engine?

I’m not sure it’s all that necessary though?

Yes they are big tyres and will take a while to fill. Pete is talking about only fitting such a system to the rears. So only two tyres.
Letting them down is no problem, with big enough valves they will be down to the desired pressure in a minute or two, possibly less....
When getting ready for a move on the road, towing the loader, there will be more than enough time to get them up to running pressure.

Even if there is the need to increase the pressure in between loads, if it’s a long haul on hard roads or tracks for instance, with a sensible sized reservoir, there will soon be a crucial few extra psi in the tires. In that scenario, if you switched to Road pressure once you left the field, obviously you’d be empty, with much reduced load on the tyres, they would soon be inflated to a more favourable pressure, increasing all the time, and let’s not forget you’d be driving the machine, increased engine rpm will get the compressor working that bit harder, then your back at the heap, load up, takes two or three minutes, maybe 5?, by this time the tyres will be near or at running pressure, if they are not quite there, then is it a big deal? You’d be back on the road, and the throttle and topping them up, but a minute or two later you’d be letting it all out again!
Is such operation necessary?...

Even if you stuck a whole road compressor on the machine, dedicated to the job, your not going to get instant inflation!
 
For my project I only need 3000ltrs, but I need it in 30s!
Tractair do a 4000ltr / min hydraulic drive screw compressor but it’s a lot of money - anyone know a cheaper source.

Some of the smaller Ingersoll Rand road compressors had a belt driven air end (screw compressor), this in theory could be fitted to a machine and belt driven from the engine?

I’m not sure it’s all that necessary though?

Yeah sorry not really for COP but for Andrew’s project he mentioned wanting 3000 litres @ presume 2-3 bar in 30 seconds. Only way to get that with a compressor is road type screw air-end.
 

cosmagedon

Member
Location
North Wales
Fendt have it right on the new 1050, separate rigid bladder inside the standard tyre that holds a huge volume of air you just open when you need to pump the tyres back up again.

How difficult would it be to fabricate a vessel inside the rim?
 
Fendt have it right on the new 1050, separate rigid bladder inside the standard tyre that holds a huge volume of air you just open when you need to pump the tyres back up again.

How difficult would it be to fabricate a vessel inside the rim?
Not sure about the in-tyre vessel, but the updated vario transmission and 4wd system on the 1000 series is very trick indeed.
 

Mursal

Member
I’m not sure it’s all that necessary though?
Even if you stuck a whole road compressor on the machine, dedicated to the job, your not going to get instant inflation!

But that leaves the wheels needing to be connected permanently to the supply.
The speed of inflation comes into play, when the wheels are only connected when stationary, for system simplicity.
 

Sharpy

Member
Livestock Farmer
I am not sure of the amount of air needed to change the tyre pressure upwards but a bigger air receiver would be the cheapest solution to the air requirements. For example a standard super single wheel at 95 psi has enough air in it to inflate from flat to 20psi ish a 600 65 38. And that doesn't have a compressor feeding into it simultaneously.
 

Pilgrimmick

Member
Location
Argyll
From another forum:

upload_2018-5-15_11-0-39.png
 

marklr90

New Member
Just curious if there was any conclusive verdict from this discussion? Did anyone prove the self build concept and make their own working system?
 

Sausage

Member
Imagine if the reservoir had a hydraulic piston that could vary the size of the reserve so that you didn't need to 'produce' more compressed air. Extend it out to allow tyres deflate and compress it to refill them.
That would only work for the first stroke of the piston (assuming it contains pressurised gas) you wouldn’t be able to recompress the gas to get enough back into the piston.
 

SFI - What % were you taking out of production?

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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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