Outer Limits 4x4 Board

i heard buggies add weight to tyres in ways of lead shots (sinkers) inside each wheel, I was wondering if this idea is transferable to a zook

pros
more grip
lower COG

cons
cant go at high speed?
breakage increase?

has any body else done it? if so what sorta weight did you put into each tyre

it'd be a bit rattly... why not add water to the tyres - little less dangerous.

I've heard of people adding water to their tyres for lower COG (tractors do it for starters)... but never seen it done - and we've all seen how a tractor bounces around cos of the water sloshing around inside... not sure if thats desirable on a zuk =)

the bouncing of a tractor isn't from the watar, it is from low air preasure

proceedure for filling tractor tyre:

possition valve stem at top of rim
fill with water all the way to valve
then inflate to the correct preasure


the ones that are bouncing down the road are under inflated, this is very dangerous

i would not recommend water added to your tyres for a road going rig
way to much extra wieght for your brakes

I've heard water isn't that good due to amount of weight it give compared to the volume isn't as effective

this is for offroad tyres only .. for crawling

Bloke I know (he was a truckie) used to swear by putting golf balls in the tyres. He reckons they were just heavy enough to balance the tyre, but light enough not to cause too much extra rolling weight. I was pretty drunk when he was explaining this to me so I might have the reasons wrong, but I remember he has golf balls in his tyres

everyone knows how far a golf ball bounces on the road - imagine how far they would go if he blew a tyre at 110!!!! hahahaha

alien wrote:everyone knows how far a golf ball bounces on the road - imagine how far they would go if he blew a tyre at 110!!!! hahahaha

You could hear him coming down the road... Sounded like those clickers you used to put on the spokes of your BMX when I was kid

From WE ROck rules

5.23: Weight
Weight is the total vehicle weight.
5.23.1: The vehicle must weigh a minimum of 2500 without the driver while competing. A W.E.Rock marshal may approve weight reduction based on damage while competing

5.23.2: Use of environmentally damaging compounds, fluids, etc. is not permitted for weight in the tires. This includes Lead. Determination of this rule will be left to occurrences; therefore penalties will be issued once the tire has torn, broken, etc. and the environmentally damaging compounds or Fluids have been released.

I am planning to weld steel bars/plates to the inside of the rim to add the required weight for my comp tires. Steel cause its cheep and welded so it dont move

2500 pounds or kilos???

There's been some really good tech on this on Pirate.

On the face of it, suzuki's might stand to benefit the most from this, as theu have a relatively high COG and light running gear, but I don't think it's practical.

Water seems preferable to shot as it is able to deal with speed better (also it's cheaper, easier to fill and less of a hassle if you loose a tyre on the bush

BUT

apparently, water only works at speed when the tyre is quite full, which equals A LOT of weight - let's say 50kg, (50 litres) meaning you're going to more than double the wheel and tyre weight. If your'e planning a leaf sprung build (sorry, don't recall) the effect of that weight on axlewrap/spring damage will be huge.

Stopping from speed becomes significantly harder
acceleration becomes slower
As water doesn't compress like air, the ride is shot as the tyre doesn't conform at speed like it does with lowish pressure in it

Breakage becomes a much bigger problem, especially where you might need to hit stuff at speed.

As I said, there's lots of tech on this on Pirate. It's not suzuki specific, but as an example, JR was running water and wanted to get 100% of it out before he tried doing any high speed coilover tuning.

Steve.

tjm_tj wrote:the bouncing of a tractor isn't from the watar, it is from low air preasure

proceedure for filling tractor tyre:

possition valve stem at top of rim
fill with water all the way to valve
then inflate to the correct preasure


the ones that are bouncing down the road are under inflated, this is very dangerous

i would not recommend water added to your tyres for a road going rig
way to much extra wieght for your brakes

I thought this was due to the fact tractors have neither springs or shockys, huge unsprung weight, ever seen a tractor on ruf ground with inflated tyres, no way, at least when the tyres are down you get numatic suspension of sorts.

X2. Tractors have no suspension; they'll bounce regardless, especially backhoes/front end loaders which have lots of weight outside the wheelbase.

Steve.

Gwagensteve wrote:X2. Tractors have no suspension; they'll bounce regardless, especially backhoes/front end loaders which have lots of weight outside the wheelbase.

Steve.

i can vouch for this since i drive one at work and it has water in both front (approx 29) and rear tyres (approx 54)

with the water in them i find the tyres bag less because the space inside the tyre is mostly filled with water

I'll have a look on pirate tonight to dig up some info

david123 wrote:

tjm_tj wrote:the bouncing of a tractor isn't from the watar, it is from low air preasure

proceedure for filling tractor tyre:

possition valve stem at top of rim
fill with water all the way to valve
then inflate to the correct preasure


the ones that are bouncing down the road are under inflated, this is very dangerous

i would not recommend water added to your tyres for a road going rig
way to much extra wieght for your brakes

I thought this was due to the fact tractors have neither springs or shockys, huge unsprung weight, ever seen a tractor on ruf ground with inflated tyres, no way, at least when the tyres are down you get numatic suspension of sorts.

sorry, i was refering to onroad bounce of a tractor with under inflated water balist tyres, yes on bumpy ground they will bounce regaurdless