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Great work Paul....Love the last bit about rookies and wrong gear. I know that situataion only too well🤣.... Paul

From the Telma web page So these aren't that heavy, if your working in hilly country or city stop start, they probably don't take long to pay for them selves Paul

Rained half the day today, so off to Echuca for a Mag drill and other supplies Stuck about in the wet and sticky clay this afternoon My grand achievement for the day Got my new to me after loosing (missplacing so safely I can't remember were) 4" - 5" reducer for the exhaust 4 inch turbo outlet and putting a 5" exhaust on So we, my son Jack'0' and I had our virgin run on a bead roller and made a 1/4" step roller, roll a 60° flange on each end, this bolts to the new to me exhaust brake Then grabbed from the selection 90° mandrel bent 5" elbows my first victim I soon realised that there just wasn't going to be room to fit the elbow in between the fire wall and exhaust brake Oh and I'm fitting a exhaust brake as well because as good as the Dynatard on a Mack isn't, we can always do with a little extra stopping power So I promptly chopped the new flanges off the reducer as short as I dare go, minus a little bit more Then re rolled flanges on the new "how short can you go reducer" and refitted the exhaust brake and reducer I then looked at the elbow/victim and after much discussion with Jack'0' I ignored all of his advice and protests and cut away with the grinder Would you believe it, it wasn't right So next victim in site and more guidance from Jack'0' ignored, I sliced away merrily This result was much better and not as diabolical a egg shape as doom and gloom Jack'0' suggested So thinking this might work okay we rolled a bead or ten and flattened these out to form flange It almost didn't fit, but if we made the flange sharper on the bottom and less on top we could adjust the down pipe slightly so it fitted fine So after a afternoons work and lots of discussion we have a exhaust brake fitted and engine down pipe, Jack and I were certainly pretty impressed with our results We have a 5 inch down pipe were it shouldn't fit and a Jacobs exhaust fitted to possibly assist the not so impressive Dynatard engine brake I know it doesn't look much but struth, it was a lot of work for a couple of rookies using the wrong gear Paul

Mack bites back 2010 there was more interest with the older Mack than the new Mack cya

Nothery from 2014 cya

So I'm correct that cavitation in pumps is a result of the discharge been greater than the capacity of the supply to the pump Paul

Good job.It is a beautiful truck.Im sure it would fit nicely into someones collection.... Paul

The two things are called circuit breakers, and are available at most auto parts stores. Also on Amazon. Normal ratings are 10A, 20A, 30A and 40A. Some come as 6v and some 12v. You can get some other amp ratings but might be harder to find. They are also called thermal circuit breakers as they reset when they cool down. They can go bad. Arching as they open up can eat away at the contacts. Also, as said above, those corroded wires will cause an extra load on the circuit too. Hopefully the corrosion doesn't go too far back into the wires, so that you can trim them shorter and add a new connector. Although the one wire looks pretty short already.

I will when I get back down to the truck. It's at my brother house. But, I'm not so sure it would be much help as it's a Firetruck which means a Gasser engine ENF707C (in 1957 they took less time to warm up and get moving). Yes, it's a Thermodyne but that just means it sort of shares some features that a diesel has. Similar block. The Compressor is in the same spot, but in place of the diesel fuel pump, we have ignition distributors (two since it's a firetruck).

I don't know what happened with this set but I have a couple of them if you're looking for some

I remember that at one of the ATHS national shows there was a man from California, with blue KW's with a gold stripe, that had a performance Cummins(??) engine mounted on a trailer with one of these electric retarders mounted behind it that he used to put a load on the engine when he fired it up.

https://rairfoundation.com/irans-deadly-reach-irgc-assassins-strike-canada-while/ 3-15-26 Iran's Deadly Reach: IRGC Assassins Strike in Canada While Mullahs Get Fast-Track Citizenship Under Liberal Watch

Same here, high winds and sideways rain and it was over in about 5 minutes. Carport's still upright.

My grandma bought me a construction kit had a jeep dump truck and crane I was 14 and took them all out and started to play with them and decided I was a little bit too old for them…. Wound up packing them up and giving them away years later to a buddy’s little boy

The ones (Telmas) I was around were on LP fueled M.A.N.'s so had a throttle and therefore would not work with a Jake. However if you could justify the weight there is no reason they couldn't be used with an engine Jake as well. Some of the heavy hauler had 3406's with both Jake and Brakesaver, as weight is never an issue when every load is a permit load. I don't know how much they weighed, but there was big rotor on the output (transmission) or input (rear axle) and a stator that surrounds the rotor with a series of electro-magnets in it. So lots of copper and iron. Brakesaver used engine oil to act on a turbine wheel between the engine and clutch. Retarding energy was turned into heat in the engine oil. Cats with Brakesavers have bigger oil coolers then those without. When Cat used an injection pump and nozzles in the head, there wasn't a handy injector rocker to time the Jake like there was with Cummins and 2 stroke Detroits for optimal valve opening. Cat Jake's of that period used an adjacent cyl exhaust rocker to trip the Jake, but its timing wasn't ideal so the retarding wasn't as good as it is with common rail engines. So that is why the Brakesaver hung around until the changes over to common rail fueling. At that point the timing came from the injector rocker, like Cummins. By the time we got the LP buses, mostly the Telam's didn't work, we had enough to do to keep the buses running and Telma's weren't needed in Chicago like they were in Austria where the buses came from. I think may be 1 out of 4 or so worked. Likely needed something simple, but there was never time.

And I could get somebody to strip it down I would like to have it painted so I can put some chrome on it

So how heavy were the telma’s? Were they ever used in conjunction with a Jake brake like the brake savers were?

Can't belive! Sounds very drammatic. What I can say... Diesel is about 80-70 American Cents per litre here in Russia. Slowly creeped up from 50 or so Cents a year ago. And with no affect from the Middle East events. Sanctions work two ways. The 2nd is limitation of oil products leaving the country's inside market. But honestly I would better like the both events to not take place.

No, no, not that fast! He should buy a pair of rear alu wheels to install onto the CH!

You are always welcome Paul. And sure the rest of the crue. My collage research thesis had relation to centrifugal pumps. Not directly though. I studied mining and my diploma theme was "hydromechanization' - destroying of soft soils by stream of water and than transporting it away in a shape of pulp by big pipes. The pipes were really big, of 500-700mm ID and of 3-4 km of length. Pumps which were sopposed to move such volume of fluid were large correspondingly. And correspondingly expensive were cavitation issues. The most troubles with the pumps were predicted by regimes they're operated at. The main subject was managing it and the most straight and correct way was setting right revs. But that was a problem at the time (early 90's) since powerful semiconductive devices were unavalible and the pumps spinned at the speeds typical asynchrone electric motors provided. That way speeds of flow in suction and supply pipe lines didn't corellate well bringing cavitation to pumps and settling derbits on bottoms of pipes clogging them.

Telmas were popular on packers (garbage trucks) too. Some Macks made to be packers had no provisions for an engine brake. Telmas would have been quiet in residential areas as well. Brakesaver ? Whole different animal from back when Cats had overhead cams and an injection pump. Closest fluid type retarder would have been in an Allison automatic back then. Brakesaver was heavy, high maintenance and overall costly. Some 3406s still had them, but they were pretty much out of the picture by the mid to later '80s

Here's my v: of the 2016 Mack Muster @ Kyabram Victoria Australia cya

Well we’re stuck here with newsomes overpriced gasoline I didn’t know this till recently, but 80% of our gasoline comes from them that explains why it’s so expensive