710K front-to-back CG?

[ChickenPinz]

Does anyone know (by documentation or measurement) the front-to-back CG (Center of Gravity) for a 710K?

I couldn't find it in the documentation. If someone had front and rear axle scale weights, it's easy to calculate from that.

The goal is to evaluate trailer options wrt vehicle position and tongue weight. Trailer selection is (will be) a separate thread.

[ChickenPinz]

Since no one had this data to share, I went off and borrowed some racing scales to collect data. Here's what I learned:

All numbers are with the truck fully-fueled. Additionally, the truck has the standard tool kit, and a ham radio setup with a 20Ah Lithium Iron Phosphate (LiFePO4) battery and stubby roof-mount NMO antenna.

- With chains and a few light tools and water bottles in rear is 4842lb, with a 52.9% front axle weight bias (test 7).
- Without gear in the back, it's 4747lb, with a 54.0% front axle weight bias (test 10). This is what I'd consider the practical trailering configuration given you'd want full fuel when you hit the trail.
- When a 210lb driver gets in, it adds 142lb LF, 68lb RF, 45lb LR, and -44lb RR (test . Since you sit over the front axle, no weight is added to the rear, but since it drops the left side a bit, it lightens up the right-rear tire by about 20% of the driver's weight and shifts that to the left-rear. So 5052lb is my normal driving weight, with 54.8% front weight bias.

Using this information, one could calculate where to position the truck on a trailer to achieve the desired tongue weight.

If folks are interested, I also have left/right data as well.