Yes, I absolutely agree! The man in the film said, "very robust". Driving downhill, using the TELMA mostly ... TELMA gets hot and if you stop the vehicle after using TELMA - there's not enough time for it to cool so either it starts burning (rarely) or even it will take a bit damage. So if you have to drive in the Alps (for example like me everyday with the school bus) and you have to stop right after the hill - either you do not use the TELMA very often or you will destroy it sooner or later.
What I know the telma is almost gone now and has been replaced by the hydraulic or hydroretarder and also Volvo uses VEB. And same with Mercedes and Scania they do not use it any more they use a "regular" retarder.
I've known of the name Telma for decades and knew it was an electric retarder but never saw an explanation of how it works. This is different to other retarders that use oil and impellers to slow the vehicle.
i know for a fact that volvo do not use these, they use a combination of engine and exhaust brake to slow the truck and i bet its a dam sight more reliable than this!
Single axle drive on the truck with triple axle on trailer? My big old american piece of junk runs at 93K (legally) and those little euro trucks can almost fit in my grain box, by weight or size. European trucks are a little more efficient but ....petite. american companies are adapting much euro technology to save fuel, etc...but there are growing pains... breakdowns of Mann, Mercedes and Volvo.... many of them don't even work when it's 25 Oil pump shafts twisting off, crankcase ventilation systems plugging with ice and fuel systems that don't heat the fuel . I see plenty volvos and freightliners with mercedes engines dead on the northern plains highways. with two decades involved in auto and heavy truck parts I might know what I'm talking about. t I'm happy with my old N14 Cummins. in addition to my very loud Jake and six axles worth of brakes, I'd like to have that Telma retarder
European engines can't handle the poor quality high sulfur diesel used in America, that's why they break down. Scania and Volvo driven in Europe can handle 2,000,000km (~1,200,000 miles) with only oil-changes and filter replacements (regular service) at 100,000km intervals. The engine, nor the gearbox need any rebuilding or major repairs. In Sweden they haul 60 metric tonnes, Finland hauls 74 tonnes, both on 25.25 meters total length. And both countries are trying out ~90 tonnes on ~30 metres length with 730-750hp (3500-3550nm/2580-2620lb·ft) 16 litres engines. The rest of Europe has smaller roads and only allows 40~50 tonnes and 17~22 metres (depending on region). The mover isn't what's counting when talking lorries, you aren't paid for the biggest and heaviest engine, but for the goods hauled. Light trucks and trailers means that you can load more and use less fuel.
Andreas Nyman North American diesel has been ultra-low sulphur since 2006, so I'm not sure where you're going? And it's the fuel system that shits out, not the engines themselves.
GusCowMiller Exactly. 15 ppm is the maximum for sulfur allowance in diesel in the United States. Also higher sulfur is bad for the environment, but good for lubricity, that has nothing to do with how poorly engines run. However the cetane number for U.S. gas is different than in Europe, so the engines perform more poorly in the cold do to that. Europe has a typical cetane number of 51 to 60, while in the U.S. it's more like 42 to 45. In California, however, it's the law to have a cetane of 53. I don't see why Scania, Volvo etc wouldn't make their engines with engine management that would adjust for this number in the same way a turbo car adjusts for different octane fuels as it's basically the same concept.
AGDemo a good thing of the retarder like Telma or a voith is that if you put a drive axle in the the trailer with a retarder is easier to go down a Hill without worrying of doing a donut and crashing with the trailer
"foreign" trucks has air brakes and some have manual transmisson and if "foreign" trucks are pieces of shit then why are so much ahead in technology than american trucks? also an american truck wouldent fit in europe we have smaller roads
![How to drive an automatic car. [full tutorial for beginners]](http://i.ytimg.com/vi/Olr1F1c0IoE/mqdefault.jpg)
![How to drive an automatic car. [full tutorial for beginners]](/img/tr.png)
I love these 90's style musics during documents and informational videos.
I ...... i
Yes, I absolutely agree!
The man in the film said, "very robust".
Driving downhill, using the TELMA mostly ... TELMA gets hot and if you stop the vehicle after using TELMA - there's not enough time for it to cool so either it starts burning (rarely) or even it will take a bit damage.
So if you have to drive in the Alps (for example like me everyday with the school bus) and you have to stop right after the hill - either you do not use the TELMA very often or you will destroy it sooner or later.
Best explanation I found so far
What I know the telma is almost gone now and has been replaced by the hydraulic or hydroretarder and also Volvo uses VEB. And same with Mercedes and Scania they do not use it any more they use a "regular" retarder.
*engine brakes, exhaust brakes, and still use a Telma. Company I work for uses them on a wide scale.
Houses are well aligned to the steep downhill slope
LOL
And these things really do save money, I have a truck in my shop that wore out the S-cams and bushings, but the linings are still easily 70%.
What is the name of the 2nd song that kicks in when the 2 renaul
t trucks are shown
The current in the coil generate magnetic field there for no friction what an idea 🚛
Loving that music
Why the heck aren’t these things fitted in the Kenworth I drive ?
I've known of the name Telma for decades and knew it was an electric retarder but never saw an explanation of how it works. This is different to other retarders that use oil and impellers to slow the vehicle.
No. It has not been "replaced".
I havent seen anyone of those here in Sweden atleast.
Volvo's can be and have been equipped with Telmas. I've seen trucks equipped with engine
Is the Telma on the market
do the trucks in this video have auto transmissions?!?
@CabalaCicero and me i love those 90s trucks..!@!!
Se consigue en Colombia?
actually, the telma should be more reliable.
i know for a fact that volvo do not use these, they use a combination of engine and exhaust brake to slow the truck and i bet its a dam sight more reliable than this!
whats wrong with engine braking?
It has only recently become a feasible and reliable replacement for retarders.
Single axle drive on the truck with triple axle on trailer? My big old american piece of junk runs at 93K (legally) and those little euro trucks can almost fit in my grain box, by weight or size. European trucks are a little more efficient but ....petite. american companies are adapting much euro technology to save fuel, etc...but there are growing pains... breakdowns of Mann, Mercedes and Volvo.... many of them don't even work when it's 25 Oil pump shafts twisting off, crankcase ventilation systems plugging with ice and fuel systems that don't heat the fuel . I see plenty volvos and freightliners with mercedes engines dead on the northern plains highways. with two decades involved in auto and heavy truck parts I might know what I'm talking about. t I'm happy with my old N14 Cummins. in addition to my very loud Jake and six axles worth of brakes, I'd like to have that Telma retarder
European engines can't handle the poor quality high sulfur diesel used in America, that's why they break down. Scania and Volvo driven in Europe can handle 2,000,000km (~1,200,000 miles) with only oil-changes and filter replacements (regular service) at 100,000km intervals. The engine, nor the gearbox need any rebuilding or major repairs.
In Sweden they haul 60 metric tonnes, Finland hauls 74 tonnes, both on 25.25 meters total length. And both countries are trying out ~90 tonnes on ~30 metres length with 730-750hp (3500-3550nm/2580-2620lb·ft) 16 litres engines.
The rest of Europe has smaller roads and only allows 40~50 tonnes and 17~22 metres (depending on region). The mover isn't what's counting when talking lorries, you aren't paid for the biggest and heaviest engine, but for the goods hauled. Light trucks and trailers means that you can load more and use less fuel.
Andreas Nyman North American diesel has been ultra-low sulphur since 2006, so I'm not sure where you're going? And it's the fuel system that shits out, not the engines themselves.
GusCowMiller Exactly. 15 ppm is the maximum for sulfur allowance in diesel in the United States. Also higher sulfur is bad for the environment, but good for lubricity, that has nothing to do with how poorly engines run. However the cetane number for U.S. gas is different than in Europe, so the engines perform more poorly in the cold do to that. Europe has a typical cetane number of 51 to 60, while in the U.S. it's more like 42 to 45. In California, however, it's the law to have a cetane of 53. I don't see why Scania, Volvo etc wouldn't make their engines with engine management that would adjust for this number in the same way a turbo car adjusts for different octane fuels as it's basically the same concept.
very good
2:40 Cool as a cucumber
Coz that music is much cool !!!!!!
Jake Brakes Are Where It's At...I'll pass on this...
Nice
AGDemo a good thing of the retarder like Telma or a voith is that if you put a drive axle in the the trailer with a retarder is easier to go down a Hill without worrying of doing a donut and crashing with the trailer
Ahh I see, Thanks!
ahhh now i get it, good vid
2021
this is so epic
im a fan of the old vehicles the full metal ones that work not americas crappy fiberglass computerized junk now days
"foreign" trucks has air brakes and some have manual transmisson and if "foreign" trucks are pieces of shit then why are so much ahead in technology than american trucks? also an american truck wouldent fit in europe we have smaller roads