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how to shave weight on rocks????
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<blockquote data-quote="patooyee" data-source="post: 172089" data-attributes="member: 483"><p>I don't know that for sure, just what Steve says. I'm not trying to sway opinion here. It just seems like, when people start talking about 14-bolts vs. 80's, there is very little 80 tech because there are fewer of them out there to actually dissect and inspect. I'm just trying to fill that void. I couldn't ever find any info about 80's so I said, "Screw it," and bought two just to find out for myself. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>And pinion deflection may not be the issue when teeth break anyway. Some good discussion on that has gone on Pirate recently in reference to 60's, 70's, and 9" ring gear bolts loosening. The fact that they do indicates that the carrier / ring gear is what is flexing and an extra pinion bearing does nothing to fix that. That is why Currie is building a HP70 housing right now that has a load bolt to support the carrier at the pinion and not a pinion nose bearing. The fact that it doesn't seem to happen with 14-bolts could be because the 14-bolt carrier is so much thicker than the 9" / Dana carriers. If that was the case, the 80 also has that base covered because the ring gear is WAAAAY thicker than a 14-bolt or 70. I should have snapped a side profile, but that 80 ring gear is a good .5 - 1" thicker than the two gears sitting next to it.</p><p></p><p>Its actually kind of neat to think about this stuff to me and watch how the manufacturers changed the designs through the years to accommodate what they learn. Its neat to me how small, subtle changes result in large gains. I would give a lot of money to be a part of Spicer's destructive testing department. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>J. J.</p></blockquote><p></p>
[QUOTE="patooyee, post: 172089, member: 483"] I don't know that for sure, just what Steve says. I'm not trying to sway opinion here. It just seems like, when people start talking about 14-bolts vs. 80's, there is very little 80 tech because there are fewer of them out there to actually dissect and inspect. I'm just trying to fill that void. I couldn't ever find any info about 80's so I said, "Screw it," and bought two just to find out for myself. :) And pinion deflection may not be the issue when teeth break anyway. Some good discussion on that has gone on Pirate recently in reference to 60's, 70's, and 9" ring gear bolts loosening. The fact that they do indicates that the carrier / ring gear is what is flexing and an extra pinion bearing does nothing to fix that. That is why Currie is building a HP70 housing right now that has a load bolt to support the carrier at the pinion and not a pinion nose bearing. The fact that it doesn't seem to happen with 14-bolts could be because the 14-bolt carrier is so much thicker than the 9" / Dana carriers. If that was the case, the 80 also has that base covered because the ring gear is WAAAAY thicker than a 14-bolt or 70. I should have snapped a side profile, but that 80 ring gear is a good .5 - 1" thicker than the two gears sitting next to it. Its actually kind of neat to think about this stuff to me and watch how the manufacturers changed the designs through the years to accommodate what they learn. Its neat to me how small, subtle changes result in large gains. I would give a lot of money to be a part of Spicer's destructive testing department. :) J. J. [/QUOTE]
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