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The driveshaft connecting the two axles is not the same as the driveshaft to the first rear axle so the intermediate driveshaft is too small for using as the second half of the new driveshaft. It would connect to the axle flange(s) but the yokes, cross and spline are smaller. I need another...

Time to work out the drive-shaft for the truck rear axle. I measure and the length needed is around 84" (that's 7' 0") for a one piece driveshaft. An older post has a link to Spicer but I can't copy it. On page 18 there is a chart that gives the max critical length for each size shaft at the...

Well, don't go with a 3" space if you plate the side like like I did, go 2" or 5" lower than the frame but don't go 3" or 4", the attachment bolts end up too close to the flange. I went 3" and have to make the bolt reach clear through to the edge of the flange. I'll make a detail of my...

Cleaned the additional springs and put them back into the spring pack with a lot of red grease. Now there are 11 leafs, the 3rd (small) one is removed. I had grease all over from squeeze-out but seeing the crud that was in them originally, it seemed the best thing to do. Today I find the...

I posted on an old thread about thoughts having a powered m105 using the rear axle removed from my 4x4 M35A3. https://www.steelsoldiers.com/showthread.php?31957-power-driven-trailer Here is the location of the rear axle driveshaft to connect to. It is offset about 5 1/2" to the right. It...

The shock mount had to be changed. Here is the revised perch. The shock has 9" of travel. I marked it in chalk every 1 inch so I knew where it was in relation to the frame. I'm mounting it with 5" of up travel (compressed) and 4" down (extended) with no payload. The first picture is with...

I had the M105 springs already. For some reason they seemed too heavy when on the trailer frame but as I prepared them and had input from others, they are not as strong as I first thought. I like the idea of needing no air in bags when I don't have a payload. My shock mount won't...

While I like the spring pack with 9 leafs, I'm adding 2 of them back in for 11. This makes the 105 spring less one short leaf only. I'll keep about a 15 degree back angle on the shackle to help soften the ride. I'm wondering about putting some electrical and hose conduits into the frame...

Yep....well no. Never-sleaze....lube of choice for the MV builder

The trunion being removed. The side plate slipped and tried to take my thumb off. Don't think I broke anything but it bled a lot. All seems okay. A deuce seems small until lifting parts. Next is plating the frame. The rear mount is partly on the new plate and partly on the old...

I added a shock mount outside of the spring for nearly verticle action and close to the wheel with plenty of clearance, especially when hubs reversed and dish out. The stud is my my cut off unbolt and 3/4x1.0 sleaze.

I don't know about this sleeper idea....I am not really liking the one here; www.easternsurplus.net/GalleryDetails/435/M35A3-2-12-ton-Cargo-Truck I think it looks better with the 5 ton www.youtube.com/watch?v=4Mtk2-17GxY&index=16&t=0s&list=PLaJlpHroCvpSm1xwSt0dU1fe3-vkvbLCM

That is about 3" of travel, right? Having 3 leafs of 12 taken out, I don't think I've reduced the capacity more than 25%, if that. I would think a 6,000+ payload to have about the same amount of travel. Then 4000# on the bags, so should do 10K or so. Seems that will pull a nice size...

I got this from a member who was part of threads that came up on "shackle angle". He said; "Want a better ride? Go more shackle angle, since you have the bags for towing. 10-15 degrees is ideal." Plugging those numbers into the triangle calculator, using 105 degree, the length becomes...

Most articles that deal with shackle angle are for off-road and a lot are working with jeeps that have front shackles. Also, many (dealing with rear suspensions) have the fixed end higher than the end that the shackle is mounted on. Ours is a straight frame. In general, if the motion of the...

I've found that the spring is 47" from center of pin to center of pin, not as I said earlier, 48". I measured on the M105 frame and the four mounting bolts are 46.5" center to center. It brings up the question, what if any angle should the shackle have? Should an unloaded spring have more...

Here is a before cleanup photo of the saddle and perch welded up and the assembly with the air bag. The short square tube is 3 1/2", which is the same size as the axle housing. I don't know if I needed it for sure, but I put a weep hole through the big block so water that might go in around...

My bags came, some machining will be done (large hole drilling) and the new U bolts should be here tomorrow. The second spring pack is together. I'm looking at the possibility of putting 2 or 4 shocks in a V that mount to the bag base on the outside of the frame now. My (2) shocks on hand are...

Assuming my spring pack is typical M105A2, here is a little geometry of the spring. I think mine were close to new or mostly un-used, so not worn or stressed out. It is 47" center of the pin to center of the pen and half that, 23.5" to the alignment bolt. All leafs are symmetrical, that I...

Thanks Chris, I have some "Lubri-Plate" someplace and a couple quarts of different size graphite that I used to experiment with but haven't seen recently. The can of aluminum paint, about 1/3 full, had a huge amount of solid in the bottom from setting. When I mixed it up, it was like a thin...