Semi. That's one problem. High pinion is the other.
For you with a LJ your driveline angles might not be too bad but for me in a TJ I think I need a high pinion. With my stretch I'm gunna have a 25-26" driveline.
Semi. That's one problem. High pinion is the other.
I could easily get away with a low pinion rear on my rig - remember I've got an 11" stretch over the stock LJ specs. Although I do like having the pinion up off the rocks. My rear drive shaft is about 33".For you with a LJ your driveline angles might not be too bad but for me in a TJ I think I need a high pinion. With my stretch I'm gunna have a 25-26" driveline.
Damn grenading a 60, those of us slobs on 44s thought that was impossible on an LJ!?
The problem is the high pinion. Many years ago when I bought that '60 I was running a supercharged I6 and 40's. I knew the high pinion was 20-30% weaker than the low pinion, but I though 20-30% weaker than "insanely strong" would be strong enough. I was wrong. With the I6, two bent shafts, a broken shaft, and a fried R&P. Now that I'm running the Hemi.....Damn grenading a 60, those of us slobs on 44s thought that was impossible on an LJ!?
Thanks Rick.Dang Nab Jeff you always do such a great job when you're building/making stuff.
Fawk! I would've never guessed. I would've also chosen HP it would be great to keep it out of the rocks.The problem is the high pinion. Many years ago when I bought that '60 I was running a supercharged I6 and 40's. I knew the high pinion was 20-30% weaker than the low pinion, but I though 20-30% weaker than "insanely strong" would be strong enough. I was wrong. With the I6, two bent shafts, a broken shaft, and a fried R&P. Now than I'm running the Hemi.....
As I understand it, the deal is that on a high pinion in the rear, the orientation of the gears causes the ring and pinion to deflect apart under load. As they deflect, the gears mesh higher on the teeth where they are weaker, and bad things happen (see my ring gear pictures above...). The orientation of the gears in a low pinion causes the ring and pinion to draw together under load, keeping the gear mesh at the strongest part of the gear teeth. There is still some deflection on a low pinion under load, but not nearly as much as In a high pinion.Fawk! I would've never guessed. I would've also chosen HP it would be great to keep it out of the rocks.
That sure looks like damage to me. I'd think if it was designed to be there, it would be a lot "cleaner."After making that my last post, I went out to the shop and took a closer look at the oil slinger. The more I look at it, the more the hole looks like damage. There is also corresponding damage on the bearing cage, so it looks like one of the sheared teeth was simply driven right through the slinger and into the bearing. I may still check with Dynatrac, but I don't think the slinger has a hole, so perhaps crisis averted...
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That’s good info, and seems to make sense to be on the tighter side of the backlash range for a high pinion.