The Combine Forum banner
1 - 15 of 15 Posts

· Registered
Joined
·
289 Posts
Discussion Starter · #1 ·
Two years ago I installed an adjustable precleaner in a customers 9750STS. This week I had the chance to ask this customer about it. He said he liked it very much. The sample is significantly cleaner and he thinks the combine even has more capacity.
 

· Registered
Joined
·
472 Posts
We bought an adjustable precleaner from Loewen a few years ago which we put in a 9650 STS. It was a very good investment - better sample and more capacity. We set it the same as the chaffer. The 70 series have a whole different cleaning system.
 

· Registered
Joined
·
32 Posts
There have been more changes than that:
-extended the windboard in the 9870
-extended sieve nose on the 9870
-new return pan
-increased fan speed on the 9870

can someone please explain to me how more capacity can be gained with an adjustable precleaner? Are you talking corn or small grains?
 

· Registered
Joined
·
289 Posts
Discussion Starter · #8 ·
I put a Loewen in the customer machine.

How can there be capacity gain?
Let's see: With a correctly adjusted precleaner we have mostly clean grain falling through, that goes onto the front of the chaffer and can then fall right through the chaffer with hardly any extra work. The MOG from the precleaner lands or actually floats over the chaffer a little further back.
With the wide open factory precleaner we have a lot more MOG at the very front of the chaffer, that takes more time and area to separate.
This is why JD is trying to gain capacity in the 9870STS with an extended precleaner. The capacity increase would be more if it was an adjustable precleaner here as well.
 

· Registered
Joined
·
486 Posts
How is your concave set and how fast are your rotor spinning?

Dont ask why, but if you open the concaves wide up, put the rotor in 1 gear and spin the rotor up to 500 rpm it seems to solve the problem. Also leave the feed acellerator on fast.

And then of course feed her with all the grunt shes got. then open up the sieve till you are rid of nearly all the canola seed in the tailings elevator
 
1 - 15 of 15 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top