Thanks guys, sort of leaning toward the 85's, they seem to step the gearbox 1 gear or very close to.
So what I do now I just have to be 1 gear higher.
Is that what you have found BigRig?
2 guys in our club have them, so I hope to have a yarn with them when we do our next trip.
I know 1 of them doesnt like the lack of momentum, but I dont know if he has run out of gears in low range. He must be fair hooting!!!!
Still researching...
We crossed the Simpson in our Lux using low 2 & 3 mainly (and 16psi) so I'm guessing we would be in 3 & 4 with these reduction gears.Originally Posted by pearcey
I am a fan of lowering tyre pressures and dont understand those who dont. Some think they are "tough???" saying I got through with out dropping a psi. If they look behind them they are more than likely damaging the track.
On that Simpson trip we got stuck once and that was trying to cross a ridge in a gear higher than we had been using, only did it to see what would happen. Climbed Big Red with 10psi not a worry in the world. That was a great trip.
Hmmm ... I'd say 85% is more like two gears at least mate. Will try to dig out the video I did, but I let the truck 'run away' in 4 low first gear on a hill at Landcruiser park prior to getting the gears and it maxed out at around 15 Klms per hour without brakes. Did the same hill post getting the 85's put in and it maxed out at about 3-4klms per hour .... that much of a difference ...
I'm sorta thinking you might want to look into the 43's if you need to 'tour' as such in low range - my box (3 speed with overdrive) would be lucky to do 25klms in overdrive whilst in low range, and even then, the gears are whining pretty loudly (as they do) ...
Be good to see the vid mate
That chart I attached has the 85% closer to 1 step in gearing than the 43% or have I made a blue?
2nd and 3rd are fairly close but they do get a bit further away in 4th and 5th.
Real world driving is the best result anyway.
I dont want to spend the coin and find I am revving hard in first all the time, prefer to be in 2nd and have another option available.
Maybe the 4.2's can pull well enough in 2nd with a final drive of 28.86:1, if they do then the 43% is the winner
I'll see if I can fin it boss as it was mid last year ... a manual 5 speed will be different, Dhuck has reduction in his with a 5 speed box, so he might be able to shed light on the topic. I know he tackles most hard hills (steep and hard) in third low from memory as it is really that low ... I don't reckon he'd be able cruise at all in low ...
Could any of you guys who have reduction gears give me a rough idea of how much coin i would be looking at to get a set in my truck?
Like the rest of you i am wanting slower crawling speeds on my 35inch tyres
http://www.marks4wd.com/products/gea...w-tc-gears.htm
A handy tool to see what speeds in what gear to help work it out
http://www.apexgarage.com/tech/gear_ratios.shtml
Last edited by macca86; 13th May 2012 at 09:01 PM.
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Whoever cannot take care of themselves without that law is both.
For a wounded man shall say to his assailant,
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Such is the rule of honour.
macca (14th May 2012)
Hi Macca Have a conversion around where they use 2 transfer cases gives the best ove both worlds but you need a shortend t shaft and two high low gear shifts Ross
Great link, thay has really helped, thanks from the other Macca LOL
Read about this mod on another forum, a bit to complicated and big for my needs.
Read something about a "lefty"? the shafts are swapped side to side?
The bloke that did it must of paid some as the installers came fro the States and did the mod at his home..... What The ????
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