jacko
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| posted on 8/5/13 at 06:50 PM |
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Please help about noisy diff ?
Hi all you helpful locost builders with bolt on sierra diff's
When turning one drive shaft one way and the other shaft the other way dose your diff rumble Mine dose .
My diff is quite and smooth with both shafts going in the same way + if i lock the shafts with 2 bolts there is only about 3mm of play on the prop
pinion i think this is good do you
Thankyou for any help
Jacko
Ps this is a open diff NOT LSD
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AdrianH
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| posted on 8/5/13 at 08:22 PM |
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Only my thoughts.
When you turn one wheel one way and the other wheel goes the other you are turning the two pinion gears on simple bar shafts, they may not have a
great deal of oil on them and are only meant, in my mind for the different speeds in relation to each other when turning a corner or loosing
traction., you are hearing them mesh with the drive shaft gears. Normally in forward motion these penion gears are stationary.
You could check you oil levels but, think these rely on oil being thrown around as the crown wheel turns.
I would say not a problem.
Adrian
Why do I have to make the tools to finish the job? More time then money.
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Daddylonglegs
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| posted on 8/5/13 at 08:51 PM |
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I'm no expert on difss, but I would tend to agree with Adrian, the gears don't sit in oil as far a I know, it gets 'thrown'
around in the diff.
It looks like the Midget is winning at the moment......
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Litemoth
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| posted on 8/5/13 at 09:08 PM |
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That's pretty typical. There's only one way to reliably test a diff and that's to run it up loaded (on a car on the road)
What does it sound like if you turn the input shaft (propshaft connection) and hold the output shafts in turn? What you're doing isn't a
condition it's designed to cope with - that is to say driving the diff from an output shaft.
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jacko
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| posted on 8/5/13 at 09:12 PM |
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quote:
Originally posted by Litemoth
That's pretty typical.
What does it sound like if you turn the input shaft (propshaft connection) and hold the output shafts in turn?
The diff sounds ok when doing as you say
Jacko
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mark chandler
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| posted on 8/5/13 at 10:00 PM |
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Just loose planet gears, nothing to worry about as they only turn albeit very slowly when you go around bends unless you spin up a rear wheel.
I have never stripped a diff when these have been nice and tight.
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