Tractor front ballast?

[richy_B]

Anyone got a good idea of front ballast calculations?  I am trying to work it out for my Same Dorado 86 but it is making my head hurt!

 

 

 

I have got these as :

 

 

T L	3220
T V	1490
T H	1730
G H	900
G V
a	800
b	2185
c	774
d	600

 

I have tried it a dozen times and cannot get anything that resembles a feasible number. 

Edited January 28, 2019 by richy_B

[richy_B]

The manual states the front axle much have at least 20% of the unladen vehicle tractor weight ( so 20% of 3220kg = 644kg ).  

 

The weight distribution unladen is 46% on the front 54% on the rear. This is 1470kg front and 1730kg rear).

 

From the middle of the front weight to the centre of the rear axle is 2985mm. From the centre of the rear axle to the middle of the flail (which I am trying to ballast) is 1374.  So 70% distance ahead of the rear axle and 30% behind. So roughly the front ballast needs to be the rear implement / 2.35. A 1000kg implement would need a 430kg weight to maintain the 46/54% weight distribution. 

 

The maximum front ballast is 320kg but I assume based on the I have 826kg weight within the tractor (1470kg unladen front axle minus the 644 minimum).   So I wouldn't need to use the all of them to achieve the minimum 20% but if I did put all 320kg I would end up with roughly 39% to 61% weight distribution.  

 

Do this make any sense to anyone???

Edited January 28, 2019 by richy_B

[Matthew Storrs]

Haven’t given it a moments thought if I’m honest, if the implement is 1000kg plus, then I keep 200kg of weights on the front. Feels safe and stable.

 

think of the leverage of a loader with 300kg bucket etc, keeping 320kg of weights on the front is considerably less stress on front axle- I assume that’s what your worried about?

[MattyF]

Ballast the front wheels with water and anti freeze could that be an option ? you just need the right valves.

[swinny]

On my tractor i use with loader and grab/ bucket on and then another 200kg of weight on the front for most things. 

 

Feels fine with a 1200kg mulcher on the back

[richy_B]

The handling on rough stuff is my favourite bit about the dorado so I was trying to work out how to maintain this really. Saw there was a formula so thought I'd give it a try. 

 

I'm going to go with roughly a third front ballast of the rear implement. I don't have anything over a ton so should be fine. 

 

Appreciate the input guys. 

Edited January 29, 2019 by richy_B