Definitive Thread on SAS
02-24-2016, 02:44 PM
#31
The hubs are not electronic. They are full time with no way of disconnecting from the axle. The axle itself uses a vacuum diaghram to disconnect the passenger side axle shaft from the differential. So your basically running 3wd with the transfer case powering only the rear wheels . You also have to consider the effects of the diff bearings being used more than necessary. But all in all, it will affect the mpgs regardless.
02-24-2016, 03:05 PM
#32
Senior Member
Lol. Yeah. The excursion used the same platform as the Super Duty. Personally, I'd prefer manual hubs over electronic or vacuum actuated any day. I removed the vacuum disconnect on mine & replaced it with a mechanical cable. All I do is pull a **** and I'm locked in.
02-24-2016, 07:46 PM
#33
Senior Member
Yeah, I may have been reaching on the turning radius. Lol. I had a front locker in an old Chevy 4x4 & it wouldn't turn for anything. The axle disconnect in the Ford makes a big difference there. But I could see possible vibration issues popping up because of the increase in rotating parts. I wouldn't mind running a locker in the front of a trail rig, but it's a bit pointless & overkill in a DD or mostly highway truck.
I agree though a front locker is over kill for a dd