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max speed out of low range?

Tech Talk for Suzuki owners.

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max speed out of low range?

Post by j-top paj »

i have no idea what diffs are in my zook but i know i got a 1L xfer case and a 5speed box.
i can hardly tell the difference between high and low in it,
this arvo i put it in low and managed to get up to 100k easily enough.
could it be possible that its not selecting low range correctly? or is the low ratio not much different from the high? i thought it was spose to be around 3:1 or something
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Post by MART »

Mine does 30 km an hour flat out in low 5th gear , somehow I don't think your in low , Cheers Paul.
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Post by Rhett »

Its about 12 or 15 percent different so if it does 112 in hi it will do 100 in lo
Its a wheelbase thing
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Post by lay80n »

MART wrote:Mine does 30 km an hour flat out in low 5th gear , somehow I don't think your in low , Cheers Paul.

Dont think Jtop has Gears Paul :silly:
I know mine would throw a leg out of bed if i tried for more than 40Km/h in 5th low.

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Post by zookjedi »

when i first bought a zook i thought i couldn't find low range :oops: but no there just crap standard hence why most people run reduction gears .
if its worth doing do it intensly , better still do it with MADPASSION

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Post by suzuki boy »

Mine with stock case with the30's in low was just like being in hi!

Now with gears and 31's 5th low flat out 15k's! :twisted:
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Post by joshnz1 »

mines like max 20 or 30 kms in low but when i didnt have gears u can get it to like 110 if u ring the shit out of it
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Post by j-top paj »

gears are definatley going to be put in, im just wondering why i can go so fast in low range.
even the patrol (2.02:1) when standard could only get about 60-70 flat out

so my understanding was that if the 1L case is around 3:1 it should be around the 40k mark tops.
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Post by Highway-Star »

Mines 1.3L all round, but very similar setup. I find that low range is approximatly a gear difference. What I mean is that 1st in HR is approx 2nd in low, 2nd high ~ 3rd low etc. When you calculate the numbers this isn't the case as all the gears are spaced differently, but its still an adequate crude guide. If my little theory holds then 5th Low is approx 4th high; and 4th high gets 100km/h quite often, can even get 100km/h out of 3rd high though it screams too much for my liking.
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Post by Gwagensteve »

j-top paj wrote:gears are definatley going to be put in, im just wondering why i can go so fast in low range.
even the patrol (2.02:1) when standard could only get about 60-70 flat out

so my understanding was that if the 1L case is around 3:1 it should be around the 40k mark tops.
That's because a patrol has a 2:1 reduction in low and a sierra doesn't because it has an indirect high range. To get your "real" low range, you have to divide low by high -

1.0 sierra: 2.558/1.59= 1.60:1 "real" low range
1.3 sierra: 2.268/1.409= 1.61:1 "real low range"

6:1 transfer gears:

6.4:1/1.67= 3.83 "real" low range.

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Post by zookimal »

If anyone wants to host it I have an excel sheet I put together with a map of speeds in gear and rpm at a given speed etc. It might help for this problem. See screenshot. Obviously the user needs to input their own ratios and tyre size.


Image
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Post by Gwagensteve »

Oh, and I forgot to add, that yes, I'm sure that makes it possible to do 100km/h in low range, but it doesn't make it a good idea.

100km/h in low would equal 160km/h in high, which is pretty fast to be spinning the gearbox, jackshaft and 1/2 the transfer case.

As a rule of thumb, I don't generally exceed peak torque in 4th gear low range. IMHO beyond that point, shift into high.

with deep reduction gears, this can be a bit of a hassle as there is a big gap between low and high, but its livable.

Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
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Post by steven101 »

zookimal wrote:If anyone wants to host it I have an excel sheet I put together with a map of speeds in gear and rpm at a given speed etc. It might help for this problem. See screenshot. Obviously the user needs to input their own ratios and tyre size.


Image
Send the excel file to me mate i got a site i can host it on for you will post it up here, send it to me @ matthewp92@hotmail.com
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Post by Hottuna »

After reading so many threads recently about gearing I'm supprised this website has been posted yet or even more so been placed in the bible

http://phill.kenoyer.com/gears/
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Post by OGJON »

although mine's a vitara it's still a zook & I'd be lucky to be able to get up to a top speed of 60k's in low range(stock transcase)
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