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You have no idea how frustrating this has, and is, for me. I'm definitely not an automotive guy. I know the basics, but when it comes to the mechanics of how it all works it's beyond my current knowledge base. You want to talk aerodynamics or anything aviation, I'm your guy. I just want an...

Questions are posted on track section already. I posted this here to learn what a full time 6x6 vehicle does, if anything, if the tire diameter is different, like in the event of a flat tire or less air pressure in the front from the back. My mixing up of torque bias vs rpm bias is why I'm...

Ahh, ok. So then would a spray clutch type transfer case work? I'm trying to read up on the meritor transfer case that uses the all time 4x4 and it says it has torque propotioning. Any idea what the **** that is? Just can't be the first time this has come up. I mean even with tires all the way...

Now that I'm thinking about it, the MRAP axles have air lockers. Doesn't that give the ability to disconnect them from the power train? Meaning it's like the manual lockers on civie trucks, but done with air rather than physically turning the dial on the hub.

I've thought about putting Oman axletech T600 transfer case. Does anyone have experience with this? Their website says it has torque split, like on the MTV that suprman was saying.

I'm not starting with anything. Having the frame custom made at a shop here in town. The engine will be either a surplus CAT 3126 or Cummins QSB 6.7 mated up to an Allison automatic transmission. Do you see I'm not limited by anything. I've been collecting various other parts, but no drivetrain...

I haven't gathered any parts for this part of the build because of this reason. I'm looking to start acquiring drive train stuff, but want to make sure I get what I need to have the best outcome.

I haven't gathered parts for the Halftrack portion yet, but with the math I've done it's looking like the rear axle will need to be an M9 IHC variant. Interesting about the FMTV having different spin ratios. I wonder if this would be something I could use to compensate for variations in the...

You mentioned track thickness and OD, but this was discussed and it's not relevant. The track pitch is though, since that's the distance between centerlines of the track bars an in relation to how the sprocket moves the track around.

And here's my math with the only option I could find that works: I've finally had a chance to sit down and run the math for the various options. The only one that I can get to come close is to use the Michelin 335/80R20 with a loaded radius of 18.6 inches. The math is IHC axle with...

This is the combinations of available axles and their ratios: That's the thing though, I really don't want to run the old NDT tires. I'd really like to put a pair of Michelin XL or XZL tires on it. The Loaded radius is 20.1 and 20 respectively. That equals 40 inches for total loaded diameter...

The following is the math to find the ratio: The computed loaded radius of a 9.00x20 tire is 19.44 inches; that of an 8.25x20 is 17.55 inches (not 18.46" as in my previous post - not sure what happened there, sorry). If the rear ratio in the IH were the same as the White, what would the front...

It's another military vehicle forum. Here are the copied conversations containing the appropriate information: IHC M9: Front axle ratio 7.16:1; track drive ratio 4.22:1; drive sprocket pitch diameter 22.918 inches, 18 teeth; track pitch 4 inches, 58 pitches/track; front tire size 9.00x20...

Are you on g503? Cause it would be easier to give you the link to the whole conversation on this. If not I can explain best as possible.

I've been working on a custom Halftrack project and the axle ratios are different for the front and rear axles, which has caused a huge headache, but I've found a way forward at the moment. In the process of doing the math for different tire sizes and the axle ratios needed I got to thinking...