5th gear low range manual, what speed should I get at 3000rpm? ?

[BigRAWesty]

As the title says I'm just wondering what speed I should be going at 3000rpm in 5th gear low range??

[nissannewby]

Not very fast.

Doesnt nissan recommend a speed you shouldn't exceed in low range. Something like 50 or 70 kmh

[threedogs]

Cant say Ive ever been in low 5th, so no idea
guessing maybe 40 kph maybe more

[mudski]

Cant say Ive ever been in low 5th, so no idea
guessing maybe 40 kph maybe more
Yeah. If your in 5th low you should be in maybe chasing gears in high range i reckon. Too much unnecessary stress on 5th when its not needed.
But i would guess around 50ks.

[MyGU8]

Wait... what...? 5th on low range...?

Is that 5th on low range or 5th on 4WD high range?

I doubt that you will be ever in a situation where you are looking for anything more than 2nd gear in a low range - and again I may be wrong to assume so.

Cheers,

[TPC]

As others have said, have never been in 5th low and would not try.

[MudRunnerTD]

Wow!! I have been in 5th Low Heaps of times!! I reckon your good for 50 or a little faster Kallen.

Low Range in Sand can be far less stressful on the gearbox in all gears so to get to 5th in Low is not unreasonable or surprising when your running down the beach. Your likely not to be there for an extended period as stopping and grabbing HiRange is reasonable but some of the beaches in SA are long enough to find 5th but short enough to not bother with HiRange. IMO.

Your Gear box has 5 gears for a Reason ;) and splits All 5 ;)

[Ben-e-boy]

about 30 for me Im guessing. the tcase starts screaming just above 20km so I dont go any faster

[MudRunnerTD]

about 30 for me Im guessing. the tcase starts screaming just above 20km so I dont go any faster

Yes yours was very restricted hey! Allen are you looking to fit up those reduction gears you have into the GU? it will certainly drop your speed somewhat. Bene, you have 85% though yeah? Kallen only has 24% i think?

[threedogs]

Seeing as you basically double your horse power from selecting low range
and 5th being a very weak link in a gearbox, I would recommend High range.

but you are asking out of curiousity I gather, as for those reduction gears
are there any 63% ones still left seemed to be the perfect reduction lol

[BigRAWesty]

Well sometimes on the beach you do what you gotta do..
It was bloody soft atm and once you have momentum you don't stop..
Stopping to go into high range and then trying to start again would more than likely resulted in bogged patrol. .
Anyway..
I was on 60 k neat..
For some reason I though my gq got 80 in low 5th..
But clearly dreaming lol. .
No haven't fitted the 24% box yet darren..

[Ben-e-boy]

Yes yours was very restricted hey! Allen are you looking to fit up those reduction gears you have into the GU? it will certainly drop your speed somewhat. Bene, you have 85% though yeah? Kallen only has 24% i think?

Yeah 85% but I wouldnt call them restricted though,

[growler2058]

I used 2nd,3rd,4th LR a lot sand driving the ol Q

Edit: I was flogging it like a borrowed horse though :)

[AB]

I used 2nd,3rd,4th LR a lot sand driving the ol Q Edit: I was flogging it like a borrowed horse though :) 4th low full berries at love day in that nightmare mud hole!!!!

[Ben-e-boy]

I used 2nd,3rd,4th LR a lot sand driving the ol Q

Edit: I was flogging it like a borrowed horse though :)

I bet you were drivin ol agatha pretty hard too

[the evil twin]

Gold... absolute Gold, B.E.B.

Best post today so far

[growler2058]

I bet you were drivin ol agatha pretty hard too

Jumps in the sandhills

[growler2058]

Jumps in the sandhills

Edit: Ohhhh I get it

[MudRunnerTD]

Yeah 85% but I wouldnt call them restricted though,

Certainly not when they need to get it done but were your enemy when we were doing the commute between tracks in the hills. Perfect for what you do though mate for sure.

[mudski]

Maybe the beaches are different down SA way to up at QLD. When I was on Moreton I don't think I even used low range. I suppose for the dunes it would be a lot different though! Just high 1st or 2nd mainly for the hills and boggy sand and just plenty of the right foot... Out on the open beach runs just cruised in high 4th, in 2wd sometimes made for awesome rooster tails. Lol.

[Winnie]

Mudski we are not talking beach sand here which is compacted by water. Super soft power sucking sand!

[nissannewby]

Maybe the beaches are different down SA way to up at QLD. When I was on Moreton I don't think I even used low range. I suppose for the dunes it would be a lot different though! Just high 1st or 2nd mainly for the hills and boggy sand and just plenty of the right foot... Out on the open beach runs just cruised in high 4th, in 2wd sometimes made for awesome rooster tails. Lol.

Power makes a lot of difference in the sand. Ever seen what a turbo 4.8 does on sand?

[growler2058]

The sand down Southend, Beachport, etc is FLUFFY and will catch the unwary very quickly


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[tuckertrucker]

I've written a calculator for speeds in excel. The FS5R50A trans bolted to a TX12a with the stock 2.020:1 low range reduction on 31" tires will do 64 km/h @ 3000 rpm.

You're also very right about driving at speed in low - its often a necessity. I'm often on long sandy beaches and stopping to go into high is just not possible once Im moving. And on the beach I rarely go over 50km/h any way so low range is well suited. Also due to the high reduction, you've not got as much load on the motor which I find keeps the temps down, and keeps the amount of power still available up

[BigRAWesty]

I've written a calculator for speeds in excel. The FS5R50A trans bolted to a TX12a with the stock 2.020:1 low range reduction on 31" tires will do 64 km/h @ 3000 rpm.

You're also very right about driving at speed in low - its often a necessity. I'm often on long sandy beaches and stopping to go into high is just not possible once Im moving. And on the beach I rarely go over 50km/h any way so low range is well suited. Also due to the high reduction, you've not got as much load on the motor which I find keeps the temps down, and keeps the amount of power still available up
Well I'd say that Calc is pretty well spot on its splitting hairs ey..

Out of curiosity what would a set of marks 24% reduction gears take it to??

[nissannewby]

48.64km/h.

[BigRAWesty]

48.64km/h.
So it literally is straight 24% reduction??

[growler2058]

http://www.nissanpatrol.com.au/forums/images/imported/2016/01/151.jpg


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[BigRAWesty]

http://www.nissanpatrol.com.au/forums/images/imported/2016/01/151.jpg


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Them there are just guide lines.. lol

[tuckertrucker]

Well I'd say that Calc is pretty well spot on its splitting hairs ey..

Out of curiosity what would a set of marks 24% reduction gears take it to??

someone correct me if Im wrong, but 2.020:1 is roughly 50% reduction correct?

[tuckertrucker]

48.64km/h.

wouldn't the 24% be higher than the stock 50% reduction gear? Cause the gearbox output shaft speed is reduced by a lower factor (24% as opposed to 50%).

[nissannewby]

wouldn't the 24% be higher than the stock 50% reduction gear? Cause the gearbox output shaft speed is reduced by a lower factor (24% as opposed to 50%).

No. I belive they are quoted as a % of what the stock gearing is. So if stock is 50% then the 24% would equate to a 74% reduction

[Ben-e-boy]

No. I belive they are quoted as a % of what the stock gearing is. So if stock is 50% then the 24% would equate to a 74% reduction

Thats it, 85% of 2.02 =1.72 so, being that it is further reduced it is 2.02+1.72= 3.74:1.
3.3:1 for 63's
2.99:1 for 43's
2.5:1for 24's

[tuckertrucker]

right that makes sence now, didnt realise the reduction was on the stock gear.
Cheers guys.