Freewheeling Hubs:Do they save much fuel?

[webbertelli]

I have fitted AVN hubs to Landrovers iin the past to save fuel and wear and tear. I would be interested to hear opinions on the poterntial and actual benefits of fitting them to a 93 KZN 130 Diesel. Has anybody actually got improved fuel consumption? If so how much? I drive a mixed cycle of town and motorway and anything that improves on 20 MPG would be welcome. I'm not heavy footed and I try and keep it rolling at junctions but it is quite thirsty.

[gwh200]

I havent really seen any improvement in economy,but it certainly saves the cv gaiters.

[TFB]

Compared to the air resistance of a front end with the drag coefficient of a brick I wouldn't imagine that decoupling the front drive shafts would make any noticeable difference in MPG...but it will save wear on the CV joints (which is why I have fitted manual hubs).

Regards

TFB

[KERRSURF]

I agree with whats been said, the real benefit is for lifted trucks running steeper angles on the CV's but even standard trucks would gain from the driveshafts not turning.

[TonyN]

in theory they should, but like others said its probably not that noticeable, they are better as a wear reducing measure for the CV's, diff and hub bushes.

[GRASSMAN]

Hi guys,

Fitted some AVM FWH a while ago now, and the MPG
has gone from 21MPG up to 24MPG and, I have not
changed my driving style, so I say yes.

Gman.