[WillStanton]

I say Au cause I'm not sure if these old carts were made anywhere else? But feel free to chime in anyone. Anyway...

We bought a JD 667 TBT air cart to seed some big broad beans in combination with our 1900 TBH cart. I don't have any experience with these belt type air carts and was after a bit of advice.

We took the plate off the front so we could see the beans come off the belt from the tractor. I thought this was a Venturi there but a few beans are being blown out. I've tried more or less air but doesn't seem to change. I'd it supposed to be a Venturi?

Also does anyone know the capacity of the 667 chamberlain/john deere.

Cheers all

Will

 

[9670driver]

We bought an old 667 jd bin too as a TBT bin to work with our 2 bin gason unit. Origanlly planned to use it to just deep band plain super on our beans while using the gason for beans and tagteam inoculant. has worked well so far. Ours has a Lambordini?? diesel on it which we have running flat out. as far as I know the boys havnt had trouble with fert being blown out of the venturi. Yours a hyd drive fan or still diesel powered fan Will?
We bought ours from the EP and the bloke advertised it as a 4t bin but I think it could be closer to 5t.

 

[nig71]

I have an old kondinin group book 'seeding edge' , it has an article on your bin but not with volume specs. It does say the split between bins is 45:55. There is in the back specs for forwards 636. Correct me if I am wrong but I think forward succeeded chamberlain and this was the succeeding model. It's specs say a hopper capacity of 4500L.

The cause of blowback is probably not enough outlets. There is capacity to bleed excess air off at the manifold via some vents. In the past I had a fusion bin and I created a little vent on top of the primary manifold . You will see the occasional bit of product escape but not much. You need to do the maths on the surface area of your outlets. Basically you need expanding airflow every time you change from primary to secondary to tertiary lines. If you find the sum of your surface area is reducing at any of those steps you need to get rid of air to reduce back pressure . This could be as simple as cutting a u shaped slot in the manifold and bending down a flap if sheet metal into the airflow (not to catch the airflow or product ) to let air out.

 

[WillStanton]

Thanks guys. It is a hydraulic fan 9750driver. I'd doubt this one is 4t but I'm not very good visualising weights.

Nig that makes a lot of sense as we are seeding them on 15" on a 30' seeder there's only 24 outlets. I'll do some calculations this morning. Cheers

Will

 

[lynas]

The cause of blowback is probably not enough outlets. There is capacity to bleed excess air off at the manifold via some vents. In the past I had a fusion bin and I created a little vent on top of the primary manifold . You will see the occasional bit of product escape but not much. You need to do the maths on the surface area of your outlets. Basically you need expanding airflow every time you change from primary to secondary to tertiary lines. If you find the sum of your surface area is reducing at any of those steps you need to get rid of air to reduce back pressure . This could be as simple as cutting a u shaped slot in the manifold and bending down a flap if sheet metal into the airflow (not to catch the airflow or product ) to let air out.

Will.
I think Nig has probably hit the nail.

 

[WillStanton]

I don't spose anyone would know where to get parts for these from?

We are not getting enough rate even with beans coming out both sides and the doors wide open. Would like to speed the belt up. Is there different cogs available? Ta

Will

 

[Ralph]

There's a mob in WA called 'agriparts and repairs' I think they supply parts for those chamberlain,forward and JD badged bins

 

[WillStanton]

Thanks heaps.

 

[nig71]

Surprisingly an alternate would be to put variable rate on it, you probably have everything except the hydra motor and reed sensor; its just like converting a multispreader. That is if your cart is variable rate with a rate controller on it.