potentially stupid question about gearing
10-20-2009, 08:12 AM
#1
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potentially stupid question about gearing
well i belive my ratios are off my rear tires want to turn faster than the fronts and it causes lurching when it switches grip from the front tires to the rear any time i touch anything that isnt mud or sand it starts that lurching. so should the gears match front and rear? how can i figure out what ratios i have?
10-20-2009, 08:27 AM
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[YOUTUBE]http://www.youtube.com/watch?v=QUO7fe74DdI[/YOUTUBE] at the 1:29 mark after i put it into 4wd you see the front wheels going at thier speed and the rears going much faster. compared to the first pass in 2wd which was smoother.
10-20-2009, 08:34 AM
#3
Yes, gear ratios and tire sizes should match front to rear. To find out what you have, see below:
- http://www.4crawler.com/4x4/4R_TechI...oDetermination
- http://www.4crawler.com/4x4/4R_TechI...oDetermination
10-20-2009, 08:46 AM
#4
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If you use 4WD on high traction surfaces you will get lurching when turning.
You would need need an extreme difference in ratios to notice a difference visually without a strobe light.
Something else is going on.
You would need need an extreme difference in ratios to notice a difference visually without a strobe light.
Something else is going on.
10-20-2009, 08:48 AM
#5
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Get the truck off the ground, put tape on the wheels in the same place, put it in 4lo, have someone else watch and let it idle in 1st. See if which turns more front or rear...
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10-20-2009, 09:34 AM
#8
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@ Marc & Lumpy: you're saying jack up the truck with wheels on the ground on one side, then put in a drive gear? i hope he doesn't have a locker he doesn't know about too!
Last edited by tj884Rdlx; 10-20-2009 at 09:36 AM.
10-20-2009, 09:41 AM
#9
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No, I'd get them all off the ground...I would not chance it falling.
They should all spin the same amount if you do not have any resistance on them...am I thinking correctly?
They should all spin the same amount if you do not have any resistance on them...am I thinking correctly?
10-20-2009, 09:51 AM
#10
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well i belive my ratios are off my rear tires want to turn faster than the fronts and it causes lurching when it switches grip from the front tires to the rear any time i touch anything that isnt mud or sand it starts that lurching. so should the gears match front and rear? how can i figure out what ratios i have?
however, to determine what gears you have, FOLLOW THE INSTRUCTIONS 4CRAWLER posted and you'll know not only if they're the same, but exactly what they are, which is good information to have.
10-20-2009, 10:28 AM
#11
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I know from fact that if you have manual hubs you will blow at least one side out if you are on good traction with different gear ratios. When I was 19 I bought my first Yota and didn't test the 4wd and when I got home but it in and about a 1/4 mile into the test I heard a noise and I was no longer had working 4wd. As for auto hubs I don't know but I would assume the stress would cause something in there to break
10-20-2009, 11:14 AM
#13
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I know from fact that if you have manual hubs you will blow at least one side out if you are on good traction with different gear ratios. When I was 19 I bought my first Yota and didn't test the 4wd and when I got home but it in and about a 1/4 mile into the test I heard a noise and I was no longer had working 4wd. As for auto hubs I don't know but I would assume the stress would cause something in there to break
10-20-2009, 11:50 AM
#14
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10-20-2009, 11:58 AM
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I have run 4.88's in front, and 4.3?'s in the rear of my 93... I only used 4x4 when I absolutely had to, but was able to go about 6 miles uphill in snow aeveral times, and didnt grenade my tranfer... it did make lots of clicking noises tho... but as I said...I was on a slick surface....
10-20-2009, 12:09 PM
#16
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10-21-2009, 11:36 AM
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10-21-2009, 12:36 PM
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i thought a good 4wd rule of thumb is to never use it on anything that isn't soft (pavement, dry OR wet, or even compacted dirt roads). instead, only use it on soft ground (like sand, mud, or snow).
10-22-2009, 01:55 PM
#20
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