Eddy Current Retarder Or Water Brake

[Twinky]

Kind of an odd one but does anyone here know much about the availability of second hand brake assist devices for heavy vehicles??

I'm only interested with the eddy current brake or the water/hydro brake for a home job that I have been concocting. Main thing would be

the average price for one of these units and something capable to withstand something like 300 lb/ft.

 

I haven't called any truck wreckers as I'm not exactly sure what to ask for or if many trucks came with these types of brake assists. I think

buses mainly use them because they are much quieter than exhaust brakes.

 

Any info would be great! Cheers!

[ke70dave]

Are you making an engine dyno......

[Twinky]

Possibly....

[corollaart]

don't no of many trucks with that set up any more ,could try volvo had some sort of drive line retarded.

 

Mostly on log trucks.

 

Mostly all went to copy of jacob engine brake,,the only one that would lock the drive wheels on wet road.

 

The retarders where really not that good then even more usless these days with some grossing 64 ton.

[irokin]

Most of the mining machinery I've worked with (up to 100 tonne) has had hydraulic retarders and I think a lot of buses do too (they certainly sound the same). I suspect hydraulic retarders are preferred for low speed, repeat applications as they're more effective to a lower speed and easier to dissipate the heat (giant radiator). Also you don't have to generate electricity to operate the electromagnets. Once you get into the electric drive stuff then they turn the motors into generators and dissipate the electricity through resistor grids.

 

I think you'll be more likely to find electric retarders on vehicles that operate at highway speed. From memory when I was trying to find one the main trucks that have them is Scanias and even then only occasionally. Unfortunately second hand Scania gear is expensive and thin on the ground.

[Twinky]

This is both crazy retarded and awesome at the same time

 

 

More along the lines of what I was thinking

 

 

[ke70dave]

damn that looks dangerous.

 

I'll start tomorrow.

[snot35]

Vids or it didn't happen :)

 

Those first guys are completely nuts. I can only assume the turbo is in the cabin to keep them warm.

[Twinky]

Turbo is in the cabin because there is a v8 under the bonnet hogging all the engine bay space.

[altezzaclub]

damn that looks dangerous.

 

I'll start tomorrow.

 

Lol! Love it!

 

That's a nce toy, I never thought of buildinng a dyno to really give you fine tuning. hmmm.....

[Twinky]

I figured that my engines spend %80 of their life time outside of the engine bay, so it would be a good idea to tune them in

before placing into the engine bay. That way I can tune an engine whilst still having another engine running stock in the car

thus having less down time.

 

So far everything is quite simple to do, just need to see how much these water brakes cost as I doubt eddy current retarders

are plentiful and cheapish.

[Twinky]

Actually..... On most of the sites I have been to the engines that they test have always been things like v8's and turbo monsters.

Do you guys think that a truck wheel brake would be happy to sit on 150 -200 lb/ft for an hour?

[philbey]

Turbo is in the cabin because there is a v8 under the bonnet hogging all the engine bay space.

 

Cool and fun. I dig it.

 

Although I can get past how thermodynamic lily retarded it is putting the turbo there, packaging issues or not.

[corollaart]

I would say that a truck brake would be on fire after an hour.

 

You,ve only got ride them a little and they start smelling.

 

What about in board wet disc off a front end loader??

[Twinky]

I would say that a truck brake would be on fire after an hour.

 

You,ve only got ride them a little and they start smelling.

 

What about in board wet disc off a front end loader??

 

Where the hell would I get something like that from and not have to give my first born child to afford?

Another bullet in the barrel, I rang city truck dismantlers and in over 40 years they have never seen any of these brakes on trucks yet.

So I'm not quite sure where to find one yet. Sure enough you can buy them new, but for 5k it's not worth it.