The Grenadier Forum

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Front Drive Shaft Update

Agile has a DC shaft, but it has bad harmonics at 70-72 and they have had the best result so far. When i eventually get ours back from the dealer I will report back on performance. But its bad enough that you have to talk to them directly before purchasing. Lots of amazing shops gave up. Again, angle.
 
It is not just a cheap boot and cup. It gets pinched because their is absolutely no margin in the angle. Simply towing did mine in with a bounce. A thicker boot may only get bound up more, same result. More clearance is needed, and for that angle change. I would prefer a 1350 ujoint, that is FAR more reliable and strong long term and better fits the Grenadiers design philosophy. Are the shafts strong enough? Seems so, but Jeep guys have issues with these CV joints even with correct angles. The bottom line is, with out changing the angle with the diff, its unlikely we will have a resolution. Keep in mind, bad harmonics happen to stock Grenadiers occasionally, and 100% with a tiny 1.2" lift, and continues with aftermarket driveshafts. Lift, no lift, we need SIGNICANTLY more clearance to avoid premature joint wear, bad harmonics and boot tears that lead to dangerous, catastrophic failures.
1350 isn’t the answer. Harmonics aside, the joint is passed its operating angle and the joint will wear prematurely. A DC 1350 just makes the shaft shorter and the angle worse.
 
Oh, I agree, just wont fall apart. I am thinking more of if the angle was fixed, I would prefer that type of joint.
If the angles were right then a 1350 would be great. Just remember that regular u-joints need the same angle on both the t-case side and the pinion side or you will get harmonics. CV’s don’t care if the angles match and they are plenty strong for most grenadier uses.
 
I suggested a driveshaft loop might be an insurance should the joint fail.

Here is mine. PXL_20251121_112559920.jpg

In situ

PXL_20251121_131401145.NIGHT.jpg
PXL_20251121_131413358.NIGHT.jpg

A little bit rough, could have done better.
Actually just a £31 driveshaft retaining loop from Amazon chopped up a bit (some blood lost in the process)
PXL_20251117_213310825.jpg

Of course I had to get one of these to made sure nothing clashed
PXL_20251121_134915426.jpg
 
I like it. I just hope the dealership/ Ineos doesn't find some way to use it against you..
It's not actually touching anything, just bolted on through 2 existing M10 threaded holes in the transmission crossmember, so I can't see why there would be a problem.
In any case, it will come off in 5 mins with a 17mm socket.
 
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