Xpress bounce.

Goggles

Member

Location

Hertfordshire

• Aug 31, 2018

• #1

Apart from going slower, how can I stop my 6 metre Great Plains Simba Xpress from bouncing?
It’s okay at 9.5 Kph but could easily go quicker.
Currently working stubble down, 45 degrees from first pass. Tia

 

nick...

Member

Arable Farmer

Location

south norfolk

• Aug 31, 2018

• #2

Had this problem with short discs.roller was locked solid so all the weight was on it.as soon as I let it float it bounced no more.this was on a 5metre trailer proforge inverta
Nick...

 

Goggles

Member

Location

Hertfordshire

• Aug 31, 2018

• #3

I’m afraid that hasn’t worked, thanks though Nick.

 

snipe

Member

Location

west yorkshire

• Aug 31, 2018

• #4

nick... said:

Had this problem with short discs.roller was locked solid so all the weight was on it.as soon as I let it float it bounced no more.this was on a 5metre trailer proforge inverta
Nick...

Click to expand...

Are you letting the discs go as deep as they can or are you carrying some weight on the wheels

 

F

FarmerBruce

Member

Location

Yorkshire

• Aug 31, 2018

• #5

Goggles said:

Apart from going slower, how can I stop my 6 metre Great Plains Simba Xpress from bouncing?
It’s okay at 9.5 Kph but could easily go quicker.
Currently working stubble down, 45 degrees from first pass. Tia

Click to expand...

Are the discs worn?

 

snipe

Member

Location

west yorkshire

• Aug 31, 2018

• #6

Our short discs are doing the same. On stubble first pass it’s fine. It only happen if we go over a bit a second time. It’s bent the beam thats between the packer bearings. Factory are sending a reinforced bean to see if that helps.

 

Goggles

Member

Location

Hertfordshire

• Aug 31, 2018

• #7

snipe said:

Are you letting the discs go as deep as they can or are you carrying some weight on the wheels

Click to expand...

Wheels up and out of the way

 

Goggles

Member

Location

Hertfordshire

• Aug 31, 2018

• #8

FarmerBruce said:

Are the discs worn?

Click to expand...

Yes

 

Goggles

Member

Location

Hertfordshire

• Aug 31, 2018

• #9

snipe said:

Our short discs are doing the same. On stubble first pass it’s fine. It only happen if we go over a bit a second time. It’s bent the beam thats between the packer bearings. Factory are sending a reinforced bean to see if that helps.

Click to expand...

I find it worse on lighter/deeper ground.

 

F

FarmerBruce

Member

Location

Yorkshire

• Aug 31, 2018

• #10

Goggles said:

Yes

Click to expand...

New discs will sort it then

 

nick...

Member

Arable Farmer

Location

south norfolk

• Sep 1, 2018

• #11

snipe said:

Are you letting the discs go as deep as they can or are you carrying some weight on the wheels

Click to expand...

Not really,the ground was really hard and I was only scratching the surface for a chit.tractor speed will hold them out if too hard but just experiment till I like the result.never get bouncing going over ploughed land
Nick...

 

Fish

Member

Location

North yorkshire

• Sep 1, 2018

• #12

To stop the bounce, you have to go faster, our he-va will bounce between around 10kph and 13kph.
You can't stop it, you need plenty of grunt to pull it through the bounce speed, we usually run at around 14/16kph never a problem at that speed. This is with a 5m trailed.

 

Yale

Member

Livestock Farmer

Location

North East Wales,upland farm,800-1300ft

• Sep 1, 2018

• #13

Fish said:

To stop the bounce, you have to go faster, our he-va will bounce between around 10kph and 13kph.
You can't stop it, you need plenty of grunt to pull it through the bounce speed, we usually run at around 14/16kph never a problem at that speed. This is with a 5m trailed.

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You’ve obviously got the tractor with the optional warp speed button.

 

Tompkins

Member

Location

NE Somerset

• Sep 1, 2018

• #14

I reckon the wheels hanging out the back is the problem, you need one of these!

 

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M

mo!

Member

Mixed Farmer

Location

York

• Sep 1, 2018

• #15

Tompkins said:

I reckon the wheels hanging out the back is the problem, you need one of these!

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Kuhn reckon they've solved the bounce by putting the wheels after the discs and in front of the packer. Saves the fancy linkage to bring the weight forward as well.

 

F

farmerbill

Member

• Sep 2, 2018

• #16

It’s a speed thing, ours bounces like hell at about 12kph on the second pass, you’ve got to go 8kph or 15-16kph.

 

Deutzdx3

Member

• Sep 2, 2018

• #17

From when we sold new machinery. Training we had from manufacturer was discs had to have good forward speed to incorporate 12k was a minimum. I see so many discs 5-6m wide being pulled by 230hp which isn’t enough on heavy land to do that speed. Then people wonder why they aren’t incorporating properly.

 

W

warksfarmer

Member

• Sep 2, 2018

• #18

Goggles said:

Apart from going slower, how can I stop my 6 metre Great Plains Simba Xpress from bouncing?
It’s okay at 9.5 Kph but could easily go quicker.
Currently working stubble down, 45 degrees from first pass. Tia

Click to expand...

Simba SL used to bounce terribly as well over 8km/hr.

 

Goggles

Member

Location

Hertfordshire

• Sep 2, 2018

• #19

farmerbill said:

It’s a speed thing, ours bounces like hell at about 12kph on the second pass, you’ve got to go 8kph or 15-16kph.

Click to expand...

Ok, I’ll try warp speed

 

Guy

Member

✓

Location

Chipping Norton

• Sep 2, 2018

• #20

This year it seems all discs are bouncing ... never known a year like it! Maybe it’s the really dry conditions?
Be aware that many components on modern cultivation machinery simply isn’t designed for serever bounce scenarios. The forces being exserted when 6 or 8 m of metal are bouncing at 10/12/14kph can be massive.