Thread: FAIREY OVERDRIVE MODIFICATION

strewth Hodgo, that will hold a tonne of oil compared to the original !!
will it cause less airflow around it and therefore sort of contribute to the heat? (unsure of clearances against body etc as I havent seen one installed)

have you added a magnet to the drain plug just in case?

how much more oil will it hold?

If it does work successfully then you'd be able to do mods for people or are you thinking of posting the mod plans for the conversion?

either way, any improvement for a series is a welcome thing if it fixes a fault..

well done.

That is a good alternative to a remote sump, hoses with an electric pump as my Lt230 now runs.

be interesting how this turns out. I have only had issues with the top bearing starving for oil on my old 88". ( Used to pull the thing off every 5 to 10k and pack with molly grease to keep it alive.)

With the top bearing, can you not run the return for the pump to feed the bearing?

When the oil gets down a bit - how will the gears pull up the oil to lubricate it - oil volume might be greater but is it usable??

If I was going to modify one of these, I would be tempted to make it like the O/D for the LT95 where the small sump is kept topped up automatically from the transfer case oil which it shares.

Garry

I think the issue with the current oil volume is it too small and the oil heats up too much, greater volume would mean the oil wouldn't heat up as much, plus more surface area on the housing to disperse the heat. It would still need to be kept up to the same level on the dipstick. Good looking job Hodgo.

Cheers, Mick.

The Idea is not mine a friend up north has had it done and I am going to copy it or get one done here in Brisbane The reason I posted it, (with his consent) is to get feed back from every one.
As we all know the level of the oil drops rather quickly and this is caused mainly by heat, heat thins the oil out and it cannot do its job Its hoped that with the extra oil capacity and the oil being cooled that the problem will be over come I am going to add a oil additive, most likely Morey's oil stabilizer. but the oil level will have to be checked regularly for a while.
Hodgo

Originally Posted by hodgo

The Idea is not mine a friend up north has had it done and I am going to copy it or get one done here in Brisbane The reason I posted it, (with his consent) is to get feed back from every one.
As we all know the level of the oil drops rather quickly and this is caused mainly by heat, heat thins the oil out and it cannot do its job Its hoped that with the extra oil capacity and the oil being cooled that the problem will be over come I am going to add a oil additive, most likely Morey's oil stabilizer. but the oil level will have to be checked regularly for a while.
Hodgo

Good idea. The Roverdrive system of common oil is probably preferable, but hard to do in practice. However, IME (long time since I had an OD so memory might be hazy) the OD usually fills up with oil from the t-case??? So installing a return to the t-case wouldn't be a bad idea.

The one comment I have on the design is the cooling fins. If you make them horizontal on the sides you will get more airflow past them - also - fins on the bottom would be most effective.

As for oil - use a full synthetic like a heavier grade of syntrans. DO not use oil additives/stailisers. They are a load of BS and only used by people who have no understanding of tribology. Talk to Rick130 about oil additives...

Lovin' the heat sink, a great idea, not just for amplifiers!