Are 5.29s really weaker than 4.88s?

[Devil's Slide Doug]

Most of the ring and pinions I have seen broken were the pinion in a leafsprung SAS configuration without a control arm where the axle is bouncing/wrapping (driving over a ledge for example). I was under the impression it was due to the gear being levered (relative to the driveshaft/ tcase). In this case the smaller pinion would be easier to snap. Hopefully with our control arms/linkage and wheel base this would be less of an issue.

 

[motoloco]

What about the "inch worm" t-case gears, I know they make them for mini trucks, what about 60's and 80's?

 

[Tapage]

Nope, Its not true. Did it myself with ZERO grinding of the teeth. Even posted about it.


EDITED TO ADD LINK

https://forum.ih8mud.com/80-series-tech/175070-you-do-not-need-grind-5-29-sf-axle.html

Would be very nice see how end your cross pin .. did you have pics to share with us . ?

 

[therealratfink]

Sorry didn't take any pics. I did both sets and a front rebuild in one day and took no time to take pictures. It really was just like the auburn gear manual. I also indexed the ring gear so that the space between two teeth lined up just below the pin. This was accomplished by setting the ring on the housing without fully installing it, and slowly rotating until I got the perfect setup. Then I marked it and lightly heated (by setting it on top of my cheap little garage heater for a minute or two) it to it would easily drop on. This allowed the ground section of the pic to slide right between the teeth. The pin needs to be installed before the ring to accomplish all of this, then you slide the ground section out over the gear just enough to get the axles installed. As long as the grinding was done right and far enough down the pin, it's a piece of cake.

 

[Letsgomoreplaces]

5.29

Sure it is. It just requires some grinding. And I bet you nobody can show me one that has broken in this area if done proplerly!

are not posible to fit 5.29's in a semi floating axle .. you must need Full floating axle ..

As far as 4.88 vs. 5.29 and strength, Yes there is some difference, but its minimal. The benifits of proper gearing far outweigh the minimal differences. If set up properly it is very questionable that how much stronger one vs. the other would be. We sell hundreds of sets of all ratios, for both the 8" front and 9.5" rear. Out of hundreds of these gears that we have sold both retail and wholesale, we havent seen many (if any at all) back for warranty.

 

[Tapage]

Should be pretty interesting ( to me ) see how thick this cross pin end after the " grind " for 5.29 ..

Other issue interesting to see is which it's the better way to go .. gring the ring or the cross pin .. ?

I choose the cross pin and at least 40% of it to get in with 4.56 .. how much you need with 5.29 or a convination of both ( cross pin and ring grind )

 

[therealratfink]

If the steps I said above are followed, I ground no more then 40% with 5.29.

 

[Letsgomoreplaces]

Grinding is best done on the ring gear. I have done this on numerous cruisers, as well as instructed numerous people how to do it. Of the hundreds of 5.29 gears we sell, I have yet to see one back that has broken in the area clearanced for the cross pin. This is really a non-issue and is commonplace in many differentials.

Should be pretty interesting ( to me ) see how thick this cross pin end after the " grind " for 5.29 ..

Other issue interesting to see is which it's the better way to go .. gring the ring or the cross pin .. ?

I choose the cross pin and at least 40% of it to get in with 4.56 .. how much you need with 5.29 or a convination of both ( cross pin and ring grind )

 

[Letsgomoreplaces]

grinding for xpin

Grinding is best done on the ring gear. I have done this on numerous cruisers, as well as instructed numerous people how to do it. Of the hundreds of 5.29 gears we sell, I have yet to see one back that has broken in the area clearanced for the cross pin. This is really a non-issue and is commonplace in many differentials.

Should be pretty interesting ( to me ) see how thick this cross pin end after the " grind " for 5.29 ..

Other issue interesting to see is which it's the better way to go .. gring the ring or the cross pin .. ?

I choose the cross pin and at least 40% of it to get in with 4.56 .. how much you need with 5.29 or a convination of both ( cross pin and ring grind )