Fairy overdrive

fjshitbox1
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Joined: July 14th, 2006, 12:09 pm

Fairy overdrive

Unread post by fjshitbox1 » February 4th, 2013, 6:09 pm

Just wondering if a fairy overdrive gives you a extra 1 or 4 gears?

Bevan'n'Katie
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Joined: March 26th, 2012, 9:55 am
Location: Townsville

Re: Fairy overdrive

Unread post by Bevan'n'Katie » February 4th, 2013, 6:20 pm

from my understanding its 4 but not like a truck you wouldnt go though all 8 mainly for a 5th and then your low range it gives you a little bit more choice. when your in 1st and 2nd wouldnt be to high you got 1st 1/2.

thats my understanding

fjshitbox1
Been here a while
Posts: 175
Joined: July 14th, 2006, 12:09 pm

Re: Fairy overdrive

Unread post by fjshitbox1 » February 5th, 2013, 5:14 am

So it would be worth getting one by the sound of it

garrycol
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Location: Canberra

Re: Fairy overdrive

Unread post by garrycol » February 5th, 2013, 10:03 am

When engaged the O/D works on all gears including reverse and Hi/Lo range. However they must not be used with lower gears or low range and the increased torque will kill the O/d.

So effective use is in 4th (maybe 3rd) gear Hi range only - us as a 5th gear only.

Also what vehicle are you looking at. The O/d for series landies has a small oil volume and is subject to running out of oil ad overheating and killing it self. The O/d for the LT95 gearbox in Stage 1s, range rovers etc is a stronger unit that shares oil with the transfer case so tends to last quite well. The two are not interchangeable.

In addition to Fairy there are other brands of O/d (Toro/GKN) that tend to be more robust and a lot more expensive.

Garry

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