If only flat-towing were an option!

[Stannventures]

I am a complete Grenadier wannabe. I test drove it this weekend and fell in love with it! I asked the salesperson about flat-towing, and he said I think people have done that. The problem is the internet says different. I currently flat-tow my Jeep Wrangler behind my RV and would gladly transition to the Grenadier if it could be flat-towed, but as far as I know, it cannot. The only possibility I found on the internet was:

"The Superior Driveline Drive Shaft Disconnect (DSC)​

The Superior Driveline Drive Shaft Disconnect (DSC) allows RV’ers to tow their rear-wheel and four-wheel drive automatic transmission vehicles behind their motor homes with all four wheels on the ground – worry-free."​

They do not offer a pre-configured setup for the Grenadier, but they do some custom work as well, so I sent them an email. No response yet. Based on my understanding of the Grenadier set-up, I think it would require two of these devices to isolate the two drivelines, dunno for certain.

My post is to see if anyone has tried this approach. Have you?

 

[Blackwolf]

Since the Grenadier has full-time 4wd you'd need disconnects in both front and rear driveshafts. The driveshafts on the Grenadier also have more complex joints than those in the link.

Technically it is a feasible solution but it probably isn't practical. It might be easier to tow the RV with the Grenadier!

 

[pmatusov]

Piece of cake to unbolt front and rear driveshafts from the diff pinion yokes and hang them up. Just need to be careful not to pinch the boots while moving the CV joints around.
Easy access under the truck, a 5-minute job for each end with a 1/4" impact driver.
I flat-towed a Range Rover Classic behind another RRC for 200 miles like that - the only difference is that unbolting the U-joints from the axles took a lot longer time (IYKYK).

 

[Stannventures]

Since the Grenadier has full-time 4wd you'd need disconnects in both front and rear driveshafts. The driveshafts on the Grenadier also have more complex joints than those in the link.

Technically it is a feasible solution but it probably isn't practical. It might be easier to tow the RV with the Grenadier!

You, sir, are a funny guy, and thank you for the input.

 

[Stannventures]

Piece of cake to unbolt front and rear driveshafts from the diff pinion yokes and hang them up. Just need to be careful not to pinch the boots while moving the CV joints around.
Easy access under the truck, a 5-minute job for each end with a 1/4" impact driver.
I flat-towed a Range Rover Classic behind another RRC for 200 miles like that - the only difference is that unbolting the U-joints from the axles took a lot longer time (IYKYK).

Thank you, and I will look at that as a solution.

 

[Glen]

Piece of cake to unbolt front and rear driveshafts from the diff pinion yokes and hang them up. Just need to be careful not to pinch the boots while moving the CV joints around.
Easy access under the truck, a 5-minute job for each end with a 1/4" impact driver.
I flat-towed a Range Rover Classic behind another RRC for 200 miles like that - the only difference is that unbolting the U-joints from the axles took a lot longer time (IYKYK).

@Stannventures , this advice is counter to what Ineos specifies:

I'm not sure why they advise against power tools - perhaps trying to protect oil seals or needle bearings. And note the eight bolts are designated single-use only, so reinstalling one end of each driveshaft and adhering to Ineos' advice would involve using 16 new bolts each time.

I've encountered plenty of mechanics who scoff at replacing fasteners designated by the manufacturer as single-use. This type of mechanic also usually has a very high opinion of their ability to make up torque specs on the fly and judge applied torque and could care less about torque wrenches, torque specs, and any other official guidance. Corollary: I occasionally cross double-yellow lines on the road . . . I'm not the kind of driver who blindly adheres to every rule every time. But I don't cross the double-yellow on blind curves in the dark in a snowstorm. It's not a big ask and certainly not worth the risk.

 

[Zimm]

Mr Matusov gave you the solution.