driveshaft shenanigans

Clb

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Not sure how to read that.....
a doubler is a reduction box of a transfer case bolted in front of the regular 2 speed t case essentially "doubles" the reduction .
Not really street friendly.
What's the actual use for this rig?

Both of those links are for rock crawling where 175:1 or more is desirable for traction and eng. Braking...
 

chillman88

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Clb

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Look at the t case pic i posted.
There are 7 sections from right to left.
The first 4 (from rt to left) are the actual two speed t case.
The next section is an adapter plate joining the two reduction boxes together (note how from left to right you see section #2 looks like section #4?!).
This is not an underdrive.
Hopefully this helps ya choose.
 

1mouse3

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a doubler is a reduction box of a transfer case bolted in front of the regular 2 speed t case essentially "doubles" the reduction .

Those that I posted are the core planetary of a t-case ripped out and stuffed in a handy cylinder, the point of these are to removed the unneed bulk of a second t-case.

These would fit in the same space but give a 20% under or over as aposed to the 2.71 under of the dubbles I posted. The only t-case I see with any other ratio is a np203/np205 that has a 1.96 ratio. This us gear and doug nash unit would be imposable to find, so dont see these as a option.

https://www.oilburners.net/threads/us-gear-dual-range-doug-nash-info.65234/


What's the actual use for this rig?

Its use right now is running supplys to my house, this includes a 160 mile run there on the highway. So most the mileage Im putting on it is highway and around town is only short trips, would like to not be above 2800rpm on the highway. This is it with 2 tons of gravel and the handy crane I have to pick up heavy stuff to get in the bed. The run is not possable with the gravel since cant do more than 50mph so I am getting that down there. I would not mind having this to go offroading but is not current thought, it would need more done till it is there. With primary need to move waight and travel a distance, I am leaning to the brownie as the most practical option.


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chillman88

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looks like a spicer 8035G can be found that I think one is 1.29-1.00-.84, dont have the funds to get one right now tho.

https://www.heavytruckparts.net/item/Spicer/8035g/Transmission-or-transaxle-Assembly/1125862/1/11511
https://truckpartsinventory.com/parts/details/80570783


I would LOVE to have one of those. Guess I'd better start buying some scratch offs hoping I can win $1000 lol. Definitely would be handy, never have "quite" the gearing I want. Loaded heavy I'd like a little more, empty there's too much!
 

snicklas

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…I'd like a little more, empty there's too much!

I understand that… My son just picked up a 94 PSD 250 4x4… and I agree…. There needs to be more gears…. Seems like 1-3 go by really quick, 4th isn’t quite right… and 5th is a bit too high… or low.. you also have to wind them all out, or you are in 4th at 35 MPH…. I’ve been driving it because my Silver truck was totaled……..
 

Scotty4

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I understand that… My son just picked up a 94 PSD 250 4x4… and I agree…. There needs to be more gears…. Seems like 1-3 go by really quick, 4th isn’t quite right… and 5th is a bit too high… or low.. you also have to wind them all out, or you are in 4th at 35 MPH…. I’ve been driving it because my Silver truck was totaled……..
Ouch, what happened!?
 

1mouse3

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Just changing rear ratio would leave me a choice of good rpm at highway speed or good accreration around town, going to a zf5 and keeping 4.56 will make highway marginally better. A underdrive 6 speed fuller at 3.55 would have a tighter spread than a t19 or zf5, would have to find that and a np205 along with fabing all that up. All in all I see the getting a brownie with a ~1.30 underdrive would give me a efectively a 9 speed to play with, that is how many gears step good and freedom to use as many as needed. It would be a lot less effort than going to a fuller at a fration the cost, so a brownie is the most practical. I understand it would be a bit more diffiacal shifting two transmission vs one, but is a sacrifice I would be willing to make.


These are the 9 gear out the 12 in the 4+3 that go together well

1l 1d 21 2d 3l 3d 3o 4d 4o


Code:
MPH chart for T19A with 8035G at 3.55 rear and 35in tires

rpm  1900 - 2200 - 2500
1l    11     12     14
2l    18     21     23
3l    30     35     40
4l    43     50     56

1d    14     16     18
2d    23     27     30
3d    39     45     52
4d    55     64     73

1o    16     19     22
2o    27     32     36
3o    47     54     61
4o    66     76     87
 

u2slow

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Its use right now is running supplys to my house, this includes a 160 mile run there on the highway. So most the mileage Im putting on it is highway and around town is only short trips, would like to not be above 2800rpm on the highway. This is it with 2 tons of gravel and the handy crane I have to pick up heavy stuff to get in the bed. The run is not possable with the gravel since cant do more than 50mph so I am getting that down there. I would not mind having this to go offroading but is not current thought, it would need more done till it is there. With primary need to move waight and travel a distance, I am leaning to the brownie as the most practical option.

Based on my own F350 experience doing similar distances with 2tons gravel/firewood... your 4.10 and tire-size are fine. You just need a ZF5 for the overdrive.
 

1mouse3

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Based on my own F350 experience doing similar distances with 2tons gravel/firewood... your 4.10 and tire-size are fine. You just need a ZF5 for the overdrive.

A zf5 could due at the 4.10 but is the shifter extremely soft like the d-max zf6, those like that get sloppy with age to point of being hard to find gears. I like the stiff and clunky shifter like the t19 has, so I would be getting a short throw and cutting the cane to make it better. Past that will need a clutch kit and the 4.10s for the front, I was thinking to replace the rear end at somepoint anyways. Being that parts would be at cost to go for a brownie, I think the zf5 would have to be close to free for me to think about it.



https://www.rockauto.com/en/moreinfo.php?pk=4694880&cc=1126729&jsn=632&_nck=Ekt6BqBF1pwlXdx0gYlm1eLc36x7RagAV9qWoBGYzks2kIIGcMG6lE5GS9putP7wmUxgSGze/rPdR46WKSRoLyomJamzzG810PitvmOfG4gBYAKT/iy1awPQeslRl+ggUmg+dilWt2Rv3GhF9jbsDlc/fnDiy5TvZRwKglMRaSpOV58lhj4tBZFXY9Xj8e7uwgo+WiFYc6KcW0osTJrHIGziVtv+dEB08ibTHm9+1EvknjTXDgF3btNAnfh+6Th0WtAT4ZD0i6dcffbiSi6BEXv7WH12Q+Eh2JNpni1cvXj1IQ3BSHkly5r4pNjGT4aByLLVf0OfxyFh/2R97ih3/JMeulMvypRCwGKsK7ZKCeHPhl8o3gluofSdGpRgOWvcZ/kTxn7VyEUJlZHC7WlQQQ==
https://www.midwesttrans.com/zf-manual-transmissions-short-throw-shifter/
https://www.dennysdriveshaft.com/p4..._ring_and_pinion_gear_set_kit_4.10_ratio.html
https://eastcoastgearsupply.com/i-4949001-housing-spreader.html
 
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