How to correct twin disc pattern cock-up?

Discussion in 'Cropping' started by Feldspar, May 3, 2016.

  1. Jim75

    Jim75 Member

    Location:
    Inverness
    In the bin. The fact you only had 4 trays I think and he's putting out 36 odd says it all
     
  2. No, I had 16. Four inline trays in each group.
     
  3. Jim75

    Jim75 Member

    Location:
    Inverness
    As you say still better getting these type of guys as at least if there's a problem they know what they're doing and can rectify it quickly rather than diy. Guy that has come to me can call head honchos at fert companies if there's a problem in that respect too
     
  4. KennyO

    KennyO Member

    Location:
    Angus
    I still use my 8 amazone trays for my Kuhn spreader. I space them out in a similar way to the SCS man, but at wider spacings obviously, and can only do one side of spreader at a time. Gives piece of mind through the season.

    Need to get some test tubes rather than the amazone measure for better comparison though.
     
    Feldspar likes this.
  5. Mr Charisma

    Mr Charisma Member

    Location:
    stratford on Avon
    I have a set of tubes in a frame now but till I got them I used syringes , drilled a hole in a piece of wood to push the needle bit in so they would all stand up ,,,,, best bit is that they are all marked up for you

    But hey man those drugs took me on a trip !!!!!!!!
     
    Jim75 and KennyO like this.
  6. The stock farmers answer......go round and round!
     
    RTK Farmer likes this.
  7. Jimbo

    Jimbo Member

    Location:
    The kingdom
    I made a set of tubes up . Got some 25 mm / 3 mm thick plastic pipe on eBay and cut to the lengths I wanted then image.jpeg glued them to a thick plastic strip . Also bought a cheap assorted pack of filler tubes too . All for £15 ish
     
    Andy26, Feldspar and KennyO like this.
  8. Scrambler

    Scrambler Member

    Location:
    Leicestershire
    Good news.
    So did Amazone's original recommended settings work first time or did SCS have to make some adjustments?
     
  9. Original settings worked first time.
     
  10. Scrambler

    Scrambler Member

    Location:
    Leicestershire
    That's good to know. I was beginning to lose my respect for Amazone and German engineering,
     
  11. Norm

    Norm Member

    Location:
    Audlem,S. Cheshire
    Coincidence that Amazone and Atco use the same colour paint?
     
  12. feazel

    feazel Member

    Location:
    New Zealand
    When SCS came out how did they calculate the spread pattern? I'm guessing they weighed every tray and threw each tray weight into a spreadsheet to give a calculated spread pattern?

    It is important to understand how a spreader throws fert, it will NEVER give an even spread across the width (as in it will not place the same amount of fertiliser each meter throughout its spread width) what it does by its very nature is to distribute (generally, this could differ from manufacturer to manufacturer given proprietary vane design) more fertiliser in the centre and less towards the edge. Then when you make the next pass the overlap will even it out to an acceptable level (known as the coefficient of variation) this acceptable level differs upon which standard is being worked towards, somewhere in the low teens is pretty normal for this CV value. Hopefully this wee pic explains it

    awww.yara.co.uk_images_430_100875IMAGE_20spreading_201_20CORRECT.png

    Having a think about it, I'm reckoning that you take the weight from the little amazon test tubes and input it to their controller and this does the calculation in the background to work out adjustments to give a better pattern. Seeing uneven amounts of fert in each tray across the width is normal.
     
    haselor7, Andy26 and Steel like this.
  13. @marcot, reading this post has made me think of another unsolved mystery. I bought a special bit of metal from Amazone to check the apertures are the same on either side because at one point I thought the rates might be different. Deep within the software (Somewhere like Setup -> picture of tractor and trailer -> toggle once or twice -> then there's a picture of the left and right apertures -> within that you can alter the aperture pulses to change the aperture) you can adjust the aperture to get the two sides equal.

    I did that and felt much better, but I can't help but notice that one side is always empty before the other. With DAP or other products that don't flow as well I thought it might just be that I had loaded one side of the spreader more than the other. Given Nitram flows nicely and levels out in the hopper, once you go below the partition it really should empty evenly, but still doesn't seem to be the case. Now I've ignored what my measuring tool said have been slowly adjusting the settings so that both sides empty at the same time. Again, it's a mystery because the measuring tool should get it right.
     
    ajcc likes this.
  14. Mr Charisma

    Mr Charisma Member

    Location:
    stratford on Avon
    My man from scs puts trays out 48 m wide. ( 24 m tramlines) One run through the middle ,,,, starts from the middle and works one way , when he has emptied trays to his midway marker then he starts emptying the trays into the tubes back on them selves ,,,,, if you get what I mean ,,,, he then does the same for the other side ,,,,,that way in one run they should end up with a level line of product in the tubes
     
    fieldfarmer likes this.
  15. texelburger

    texelburger Member

    Location:
    Herefordshire
    We have a Amazone weigher and have always used scs ,every year, to check on spread patterns.The spreader has always been extremely accurate with the tray test,some years there can be some very minor alterations due to slight changes to the product.This is why i was concerned with your,last year's, tray testing when we always had good results with our spreader.Im pleased it has now been sorted must be a great relief for you.
    With your oebservation that one side always has a little more left in it than the other side,we too have noticed this even though the machine has been accurately tray tested.Ive come to the conclusion that i always travel clockwise on the headland and swinging round bends pushes the product over to the left hand side of the hopper resulting in it always having a few more kilos left when we refill.
     
    Last edited: Apr 14, 2017
  16. e3120

    e3120 Member

    Location:
    Northumberland
    This isn't the same side that you were using the reduced rate for headland spreading? Maybe your fields are all huge and the headland isn't significant but on 10/20ac fields, the headland is a big chunk.
     
  17. T Hectares

    T Hectares Member

    Location:
    Berkshire
    Another vote for SCS here too !!

    Always always always tray test all N and N+S before use, madness not to.

    I've used mainly Liquid for 10 years but gone back to solid, also gone from a succession of Amazone's to a 8 year old Kuhn Axis which has been a revelation, much better build quality and simpler to set up with better spread pattern.

    I've used Amazone's from a ZAU to a ZAM max then a hydro one, I've always thought each new one looked cheaper built with worse paint and harder to set up well.
     
  18. upload_2019-2-14_13-8-33.png
    Been looking through this old thread. We have satellite images now for our farm in June 2018. Obviously something has gone wrong. I'm so disheartened with solid fertiliser. After we had SCS in 2016 I sort of put the issue to bed a bit. This image shows I was wrong to do so. I never really did explain all the rubbish tray tests I got compared to SCS getting a decent result. I think I'm going to get them in again and put my trays next to theirs and compare the two side by side. Wish I hadn't bought so much Nitram (only upside was we bought it at £204/t) and ordered liquid instead.
     
    Last edited: Feb 14, 2019
    Zippy768 likes this.
  19. ajd132

    ajd132 Member

    Location:
    Suffolk
    Didn’t I tell you this a year ago!
     
  20. What did you tell me? You went back to mainly solid last year or the one before didn't you? Funnily enough our new (old) Omex tank has come from my uncle who is giving up liquid!
     

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