Wreckers!!

[njneer]

I wish they put proper brakes on the front of tractors I hate the 4wd in and out all the time

They do , most manufacturers now offer either inboard oil immersed brakes in the hubs or some even external disc brakes, issue is that they are an option and when push comes to shove and the deal,is being done , and it inevitably comes down to ££££ too many see it as an “ Option” that they don’t need to save a few quid rather than seeing the long term benefits of safety and spreading the braking load across all 4 corners.
Sadly the 4 wd engaging under braking is Now mandatory as covered by the Mother Regulations. Those machines that benefitted from proper 4 wheel braking have now lost the slight advantage they had in not loading the 4 wd and reduced tyre scrub But I suppose with the added 4 wd engagement it’s technically even safer and you just have to put up with the 4 wd engaging and the Clunking and lurching when turning.

 

[How much]

Do jake brakes/exhaust brakes really have that much impact/of a severe effect on the tractors braking? There was an exhaust brake on the demo tractor I had last autumn and I thought it was bloody brilliant. Held the tractor and trailer back just enough to not need to be over using the brakes. Or was I using it incorrectly?

They can work great I used to drive an arctic with a good Exhaust break not a retarder or anything fancy there was one steep hill that was only a slow speed one just out of town and usually following slow traffic down it. The exhaust break was just enough to hold you back but you would quite often feel the drive axle start to "skip" as the weight overcame the breaking effect of the one driven axle and started to push the truck down the hill as it was a tri axle 6x2 unit .
So in essence great but only as good as the rubber on the axles it works on , on that note those fancy new road work tyres should be much better at breaking a tractor then ag tyre's as there must be 3 times more rubber actually on the road then a standard ag pattern so you would assume 3 times the breaking capacity in the tyre assuming the brakes are up to it .

 

[ollie989898]

That’s the tractor left side front mudguard next to the tanker driver door, suggesting it had jack knifed before impact. Might have been moved though, but seems a bit strange to me.

Nasty one, and won’t speculate but will be interesting if we ever find out how it happened - to avoid being next to do it, if nothing else.

Is that the tractors mudguard or one off of the truck? Looks a bit wide for the tractor?

 

[johnboy87]

I wish they put proper brakes on the front of tractors I hate the 4wd in and out all the time

Trouble is, even with front hub brakes you just about need the 4wd kicking in as otherwise the fronts would be at risk of locking

 

[Deerefarmer]

Biggest trouble of all ,it appears to me anyway, is complete lack of trailer brakes
I don't care if it's 4wd or 2wd tractor up front ,doesn't matter a lick if you have properly working trailer brakes

My regular job is piloting a triaxle slurry tank and when chopping a triaxle silage trailer with a 65k tractor
With all axles braking correctly you can stop heavy loads in an impressively short distance

 

[averageguy54]

Do jake brakes/exhaust brakes really have that much impact/of a severe effect on the tractors braking? There was an exhaust brake on the demo tractor I had last autumn and I thought it was bloody brilliant. Held the tractor and trailer back just enough to not need to be over using the brakes. Or was I using it incorrectly?

They can. if used properly. Over here they have stages, you can engage different amounts of cylinders, depending on need. Their main purpose is to slow you down or stop you from gaining speed on a downhill.They are not designed to replace brakes. They keep brakes from getting overheated as much. Braking efficiency dramamtically decreases as they heat up.
Icy conditions can defeat them when tires are not able to maintain sufficient friction with the road.an overloaded trailer with no brakes would be just as dangerous as the load would still be pushing while the tractor was trying to slow down. Speed, too, can reducwe their effectiveness.

 

[roscoe erf]

I've never used a Jake brake , but is there a risk of jack-knifing because the trailer isn't being braked ?

no

 

[roscoe erf]

Do exhaust/Jake brakes do enough to break traction?

i've never had that happen and would be surprised if it even did

 

[kiwi pom]

Do exhaust/Jake brakes do enough to break traction?

Depends on the truck, it's load and the conditions but an empty truck (so very little weight on the drive axle(s) on a slippery or lose surface, then yes they can.
Using an exhaust brake on a tractor pulling a heavy loaded trailer, I wouldn't think so.

 

[Tomtrac]

Exhaust brakes
Are a good type off thing to help the normal brakes to work and not get them as hot but do give trouble if over used or seals can go

Retarders work on gearbox/ drive train and usually have a leaver the more you pull the more stoping power
Could lock up rear axle on a 50ton dump truck if pulled hard as it often did in a quarry i worked at on cats or terex dumpers
Jake brakes generally have 1-4 positions on a switch
And an off on switch
On a wet day could easy lock rear drive axle up
But as always its up to to the operator to control
on snow ice use very genital and its safe and no need for brakes use on a corner or too agressive and you have an accident
Same old story some people think some jake brakes and retarders are very dangerous but not if used correctly

 

[Deerefarmer]

I drove a demo case 310 magnum several weeks ago pulling a 1100 bu grain cart in wheat
The exhaust/engine brake? whatever it had was impressive, going down hill fully loaded, in the field of course, engine screaming and stepping on the switch would bring the engine rpms down almost as quickly as stepping on the brake pedal

 

[JP1]

Exhaust brakes
Are a good type off thing to help the normal brakes to work and not get them as hot but do give trouble if over used or seals can go

Retarders work on gearbox/ drive train and usually have a leaver the more you pull the more stoping power
Could lock up rear axle on a 50ton dump truck if pulled hard as it often did in a quarry i worked at on cats or terex dumpers
Jake brakes generally have 1-4 positions on a switch
And an off on switch
On a wet day could easy lock rear drive axle up
But as always its up to to the operator to control
on snow ice use very genital and its safe and no need for brakes use on a corner or too agressive and you have an accident
Same old story some people think some jake brakes and retarders are very dangerous but not if used correctly

Fire appliances now mostly have automatic gearboxes and retardation adjusted so when you lift off the accelerator it applies 25-30% retardation. If you follow an appliance respinding any distance you notice the brake lights coming on frequently - as the driver lifts off the accelerator mostly as opposed to actually touching the brake pedal

 

[s line]

Picture up date for the tractor crash near Ross on wye.

 

[Tomtrac]

Fire appliances now mostly have automatic gearboxes and retardation adjusted so when you lift off the accelerator it applies 25-30% retardation. If you follow an appliance respinding any distance you notice the brake lights coming on frequently - as the driver lifts off the accelerator mostly as opposed to actually touching the brake pedal

Yeh my two volvos are like that
When switch on it comes on as you let off the throttle so no need to brake

 

[Tomtrac]

Yeh my two volvos are like that
When switch on it comes on as you let off the throttle so no need to brake

Had a sedon atkinson with straight threw pipe a few years ago ,up rear off the cab sounded very nice but loud when going down into a town and you took your foot off the gass without switching jake brake off first

 

[Tomtrac]

Yeh my two volvos are like that
When switch on it comes on as you let off the throttle so no need to brake

Had a sedon atkinson with straight threw pipe a few years ago ,up rear off the cab sounded very nice but loud when going down into a town and you took your foot off the gass without switching jake brake off first

 

[roscoe erf]

Yeh my two volvos are like that
When switch on it comes on as you let off the throttle so no need to brake

mine too but I preferred my Erf with Jake brake and exhaust brake with its eminox exhaust sounded gorgeous, the exhaust brake came on when braking the Jake when lifting off the throttle 3 stages used it all the time hardly used my main brakes

 

[Ratbadger2]

Scania 6x2 I did my test in had a clever feature where the exhaust brake was on the foot brake so light braking applications were exhaust braking only, quite a good thing to have really and you could turn it off

 

[shumungus]

Picture up date for the tractor crash near Ross on wye.

Ahhh, the cause is evident now. They have the beacon folded down.

 

[br jones]

Picture up date for the tractor crash near Ross on wye.

Polish out ?