Vladislav

Looks like a lot of progress is done and still plenty of job in the future. Good luck on the project! If you will make some more pictures the other day please post a couple of views of the chassis very front crossmember. I'd like to see the difference of them between MH (I have) and Superliner. And also the way a RWII hood attaches to.

Have a safe and happy New Year! Seems like European folks met it earlier than the Untited States. So probably our Aussie and NZ members are already used to live in 2017 and keep the holiday just in memories

Wonder where Turks hide all their Macks. Probably Iranian border worked out the deal. Thank you for posting that page.

Math should be applied to figure out final ratios. One of the posts above explaines how to do it. A while back I found the top set gears (bewel ones pinion and the ring) teeth numbers somewhere on the net. For CRD92/93. As you can see from the below every upper gear set provides multiple carrier ratios. This is because of different lower (bull gear) sets. 13x17: 4.50, 4.76, 5.13 14x17: 3.86, 4.17, 4.42 16x17: 3.65, 3.87 13x19: 4.46, 5.02, 5.32, 5.73 13x21: 5.55, 5.88, 6.34, 7.00, 7.13 Unfortunately bull gears were not explained where I got the numbers from. But using math you can get those secondary (lower) sets ratios. Not the gear counts though but ratios. For example: 14x17 teeth set ratio is 17/14 = 1.214. It is used in 4.17's. If you divide 4.17 by 1.214 you get 4.17/1.214 = 3.435. This is the ratio of the bull gear set of 4.17 carrier. If you know the teeth count for one of those bull gears you could get the other one's. But I don't. Now look for 5.02. It has 13 and 19 teeth in the upper set. 19/13 = 1.461. Than dividing 5.02 by 1.461 we get 3.436. This is the same figure as we got at 4.17 count (the difference between 3.435 and 3.436 is math roughness because I used limited number of digits after point.) So we determine by that 4.17 and 5.02 carriers have similar bull gear sets.

So does it mean there are both one bolt and two bolt tranny brackets for every kind of transmission used on those Macks?

Looks like Aussie dogs are pedigreed a bit different way than American ones. Sorry, out of likes for today.

Do you need to swap the chassis mounting brackets to put Fuller in place of Mack or vice versa? Just today looking my MH model frame (which should be similar to Suerliner) I noted those brackets the tranny housing seats on have only one rubber unsulator pad on each side of the truck. MH has Fuller 9 speed. On the other hand my R's with Mack T2090 have two pads on each side. Wonder what do MH/RW2 with Mack tranny have of them?

The main difference between those military Timken setup (and many others) and Mack Camelback is the attachment of the spring ends to the axles. Or more correctly to explain, the way axles of the bogie are designed to be kept in their place. Generally you need to have them both not moving front/back and side ways and not to turn over themselves. Usually 6 or 8 torque rods are used. 4 basic ones - 2 to each axle near the ends to connect to the central crossmember. Than two or four mounted higher, usually at the carrier housing, which working together with the lower pair prevent the axle from turning over. Mack Camelback is a bit another story. Mack uses only two torque rods. The upper ones. The role of the lower set of rods is played by the spring packs. They are attached to the axle housings and don't allow them to travel. As long as articulation of the bogie must be realized the spring ends are suited between two rubber pads which allow the springs to twist in them a little bit. When a vehicle turns its axles might be forced to go sideways. In most tandem bogies springs themself prevent the axles from going left and right. On Mack heavy series rears additional torque rod is installed connecting one of the carriers to the frame rail for taking that kind of stresses.

Almost out of likes. By some reason I enjoy them better than longer hood B73/75's. Is that a V8 thing?

Eye catching stories you guys already posted. Many thnks for. But let me toss a nikel to the original matter. The shortage of good tech speciailists is a well-known matter now and the reasons of its appearance are detailetely described above. On the other hand the world we live in is a market area (to some degree). Starting from that I too hope a shortage of offer with demand existing will force the job cost go high. If it happens sufficiently much more younger boys and girls will choose those "real" professions.

Ah so! Seems your right, Mike. Just one more extra spark and all Gladys is on fire danger.

I'd go with a sprinkler system with a metal shed inside

Best wishes on a speedy recovery. Alotta Macks need you to be saved in the country!

That's said.

The matter of difference between 38 and 44K axle housings was discussed on here a couple of times in the distant past. I myself is still "in a smoke" on that though. The general idea was 44's are cast banjo's and 38's are stamped steel/fabricated ones. I have them both setups in my junk but can't determine sharp having no knowledge on decoding the marks.

Recently I saw a book on Evil bay for sale which recovered the history of Mack rail transport affairs. Priced reasonable and looked interesting to have on a shelf. Haven't saved the link (and haven't bought it either). Probably would be easier to locate by the "search" option on there.

Swishy, Thank you for explaining that heartcatching setup. Never thought someone could get his ingenuity such way. Yes, I noted it mentioned in Retro Racer's post. Will ask him for more details. Vlad

Good to hear, and fingers crossed.

Thank you for sharing this story and the picture. I don't remember you previousely mentioned you bought that rig. Seems cool you could ride your lady there. Hope it was a lot of fun.

Wow! I have 14.35 or 2.35 PM right now. I made some counts in the past and it looked like I was 6 hours later than Aussie blokes and 6 h earlier than the East cost gang. Locals tinkered a lot with summer/winter time switching the last 2-3 years so i finally lost the track.

That's what I thought. Might cool off whole the cab in a half a minute on a hot day.

Cool trailer setup!

G'day M8! Tnxs the gr@ 4 the pics! My tongue is twisting though just typing this way regardless my mouth is closed Don't you have Aussie F chassis views? And what's about steering boxes? I heard a rumor the other day (or today?) that there were some Aussie Macks with RH steering wheel and LH box on the frame driven with a cross shaft. Does it sound a bit close to the truth? Have a nice snowy day, Vlad

Does the fan also go into the cab?

Probably I had to correct the sizes a bit.