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Old March 22nd, 2011, 11:18 PM   #1
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Default Spider gear ?

I'm putting 4:10s in my Dana 30 and I was wondering in the new carrier can I use my old spider gears from my stock carrier. My stock ratio is 3:55
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Old March 23rd, 2011, 06:15 AM   #2
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Going by 4wd Hdwr parts listing there's no differentiation. Difference in carriers must be just the flange for the ring gear?
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Old March 23rd, 2011, 07:25 AM   #3
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Yes, you use your old spider gears, side gears, and cross pin.

Changing the gear ratio does not affect the spider gears or side gears.
Even if you go to a different axle shaft spline count, the spiders would stay the same.

hth
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Old March 23rd, 2011, 07:27 AM   #4
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Yes, you use your old spider gears, side gears, and cross pin.

Changing the gear ratio does not affect the spider gears or side gears.
even if you go to a different spline count, the spiders would stay the same.

hth


Quote:
Originally Posted by upchuck View Post
Going by 4wd Hdwr parts listing there's no differentiation. Difference in carriers must be just the flange for the ring gear?
Correct, the carrier break refers only to the offset of the bolt flange for the ring gear.

Last edited by orionn; March 23rd, 2011 at 11:15 AM.
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Old March 23rd, 2011, 10:36 AM   #5
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Thank you guys for the help
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Old March 23rd, 2011, 12:02 PM   #6
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Quote:
Originally Posted by orionn View Post
Yes, you use your old spider gears, side gears, and cross pin.

Changing the gear ratio does not affect the spider gears or side gears.
Even if you go to a different axle shaft spline count, the spiders would stay the same.

hth
Have you hit your head?

If you go with a different axle shaft spline count you would need new spider gears to match the new spline count.

Also, JK spider gears are not compatible with the new carrier you'd need for 3.73 and up (this only relates to changing gears in a JK and not specifically to do with this thread).
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Old March 23rd, 2011, 02:07 PM   #7
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Quote:
Originally Posted by Jeeperz Creeperz View Post
Have you hit your head?

If you go with a different axle shaft spline count you would need new spider gears to match the new spline count.

Also, JK spider gears are not compatible with the new carrier you'd need for 3.73 and up (this only relates to changing gears in a JK and not specifically to do with this thread).
No I have NOT hit my head....well actually I have in the past......

I suspect that what you may call a spider gear I call a side gear (the gear which has the splines cut into it).
So, for an axle spline count change you need new Side gears with the proper spline count for the axle shaft, the spiders should be fine unless the tooth count on the side gear changed for some reason.

I dont know about the JK axles you speak of, I have no experience with those.
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Old March 23rd, 2011, 02:32 PM   #8
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Quote:
Originally Posted by orionn View Post
No I have NOT hit my head....well actually I have in the past......

I suspect that what you may call a spider gear I call a side gear (the gear which has the splines cut into it).
So, for an axle spline count change you need new Side gears with the proper spline count for the axle shaft, the spiders should be fine unless the tooth count on the side gear changed for some reason.

I dont know about the JK axles you speak of, I have no experience with those.
correcto..

side gears = big splined ones
spider gears = little ones on the cross shaft
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Old March 24th, 2011, 09:53 AM   #9
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Quote:
Originally Posted by orionn View Post
No I have NOT hit my head....well actually I have in the past......

I suspect that what you may call a spider gear I call a side gear (the gear which has the splines cut into it).
So, for an axle spline count change you need new Side gears with the proper spline count for the axle shaft, the spiders should be fine unless the tooth count on the side gear changed for some reason.

I dont know about the JK axles you speak of, I have no experience with those.
Quote:
Originally Posted by Haggar View Post
correcto..

side gears = big splined ones
spider gears = little ones on the cross shaft
Okay, if you want to get all "technical"....

Spider gears are a set of gears in the differential which allow for a speed differential between the axle shafts when turning. You can call them differential side gears and spider gears if you like, but they're a set of gears that ride on two non-intersecting shafts that touch each other at right angles, unlike spur gears.

Try to buy one side gear - I'll bet it comes with three other gears (unless you're buying it used).

My point was that while most "spider gears" can be taken out of one carrier and inserted into another carrier (for same differential but for different gear ratio), there are some differentials starting to appear on the market that you cannot do this with, most notably the 8.5 vs 8.6 differential, the 8.6 differential (early vs. late), and the JK Dana 30.
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