springs

[Ferjablito]

Does any colleague know where I can get the measurements? I'm trying to find the options here in Europe

Fuso 4x4 Post 2012, Front Suspension Kit - Fuso Offroad Adventure Gear

Please contact us before ordering to check stock levels – they are selling fast!

www.fusooffroad.com

thanks in advance.
Regards

 

[Ferjablito]

Here in Spain I have these spare parts, but of course to adjust them I would need measurements.

BALLESTAS MITSUBISHI - Todoballestas

www.todoballestas.es

 

[SkiFreak]

You have your own truck, don't you?
Use a tape measure.

 

[Ferjablito]

You have your own truck, don't you?
Use a tape measure.

These improvement kits vary the standard measurements, so the question is?

 

[SkiFreak]

As far as I know, most of the parabolic springs that are produced in Australia for the Fuso and Isuzu light trucks are designed to be a straight replacement for the OEM springs.
I believe that the parabolic springs have a slightly longer eye to eye distance, as this changes the angles of the spring hangers. If the hangers are not vertical, the spring response when you hit a bump will be different, as the forces are directed differently. Basically, the spring response will be softer if the spring hangers angle slightly outwards.
There are a multitude of other differences between OEM and parabolic springs, but you can research those yourself.

If you are only after the actual technical dimensions of the parabolic springs, simply contact one of the suppliers and ask for them.

 

[SkiFreak]

I should add...
From memory, the front springs on a Fuso are about 100mm shorter than the Isuzu, which give then a harder ride.
To get a softer ride out of these trucks, one modification is to reposition the hangers on the chassis, which allows for longer springs to be fitted.

 

[Aussie Iron]

Simple solution. Leave spring hangers where they are. Take a front and rear spring to a spring manufacturer. Get them to measure them and add 25mm to the length from the centre bolt to the rear eye. Increase set on the new springs by about 60mm in height. This will bring eye to eye length near enough (slightly longer) to old length. Shackles will hang slightly rear on spring (compared to chassis) end instead of straight up and down. As SkiFreak mentioned .

I changed from 5 leaf front to 6 leaf front. Rear leaf numbers stayed the same. Leave the rear helpers in place, it will sit on them only when you are in full articulation. You will need 2.5 degree wedge for passenger side front and 3 degree wedge for drivers side front. (spring to axle wedge)

You will end up with about 50mm suspension lift. The front axle won't bottom out all the time and improved ride.

You will need shock absorbers that are longer in full extension to cater to the raised height and increased travel of your suspension.

Dan.

 

[Ferjablito]

There is also another extreme like AAV, it does not have crossbows, I understand that the thickness will change?

 

[SkiFreak]

Whatever spring setup to decide to go with, this should probably be the last modification that you look at.
Unlike coil springs, leaf springs are designed to carry a specific weight.
You should only look at changing the springs when your build is complete, or very close to complete, so that you know exactly what your default weight will be.

 

[Ferjablito]

Whatever spring setup to decide to go with, this should probably be the last modification that you look at.
Unlike coil springs, leaf springs are designed to carry a specific weight.
You should only look at changing the springs when your build is complete, or very close to complete, so that you know exactly what your default weight will be.

That's very clear... the date is approaching and I want to weigh up the variants. By the way, I thought I saw that you use steering damping, it's another of my options.

 

[SkiFreak]

I saw that you use steering damping

Yes, I have a steering damper on my truck.
If you plan on doing offroad driving, a steering damper can reduce rapid movement of the steering wheel if you hit an unseen obstacle on the track.