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Old 08-26-2014, 02:16 PM
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Default Red Cone Pass with a Hundy stock front diff?

Hi I'm planning to do the Cruiserfest Denver leg. After read all of the stories of people breaking things on Red Cone Pass and the "weak" front diff of the 98-99 Hundy, I'm a little hesitant... Red Cone Pass is the first trail.
Just had the truck inspected last week and did an inspection myself, everything checked out fine.
Am I being too cautious?


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Old 08-26-2014, 03:17 PM
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I would say don't worry about it. If you understand the issue with the front diff you can keep it whole by driving accordingly. Just don't bounce it with the front wheel spinning. The breakage is caused by the sudden application of traction to a spinning front wheel, creating ring gear flex and resulting in grenadetonation.

I've done Red Cone on 31s with open diffs in a stock 85 pickup. You will be fine.
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Old 08-26-2014, 03:54 PM
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Originally Posted by MountainGoat View Post
I've done Red Cone on 31s with open diffs in a stock 85 pickup. You will be fine.
Probably has a stronger front diff.
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Old 08-26-2014, 04:45 PM
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Quote:
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Probably has a stronger front diff.
Lots.
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Old 08-26-2014, 04:48 PM
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Quote:
Originally Posted by Jacket View Post
Probably has a stronger front diff.
Nah just a couple hundred fewer horsepower
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Old 08-26-2014, 04:55 PM
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...Its a couple thousand pounds lighter on the same diff
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Old 08-26-2014, 05:54 PM
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Quote:
Originally Posted by wesintl View Post
...Its a couple thousand pounds lighter on the same diff
^This

I broke the ring gear on Red Cone. At the "Y" after the meadow, (the trail leader will know where this is) there are 2 routes. I was on the left and slightly more difficult route. I am also on 35's MT's that were aired way down. That makes a big difference. I had done Red Cone probably 10 times before that with no issues.

There is no question that the r&p on the 100 - especially the 2-pinion style of the 98-99 - is very weak. IMO, it should be one of the first upgrades that you do. At the very least, you should know how to pull the drive flanges and driveshaft and make the truck 2wd. I'm pretty sure I did a write-up on here for it, it's a pretty simple job.

The nature of the 100 and it's IFS lends itself to lifting a front wheel. When that spinning wheel touches back down, the shock load has to go somewhere. In this case, it's traveling through the front drivetrain. The carrier (what the ring gear bolts to) on the 100 is weak and it flexes allowing the pinion gear to jump a tooth, taking other teeth with it. You'll get a HUGE clunk-clunk and a shutter when you drive. The 2-pinion style on the 98-99 is more apt to break at the spider gear. In that case you'll get a crunch-crunch (tiny teeth and bits) and little movement when you try to drive.

If you're driving an obstacle and you start to spin, the front end likes to bounce. STOP! and pick a new line. Bouncing = Breaking on the 100. I wouldn't hesitate to take a non-locked 100 on Red Cone, just be cautious of how you drive. I've seen them break on much easier trails than that.

We had one break at 100s in the Hills this year on Poughkeepsie on one of the easiest parts of the trail. This was after the Rock Garden and the Wall.
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Old 08-26-2014, 11:42 PM
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Go right at the y
The left is harder than it looks imo..
But everything to me is harder than it looks
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Old 08-26-2014, 11:50 PM
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Quote:
Originally Posted by simps80 View Post
Go right at the y
The left is harder than it looks imo..
But everything to me is harder than it looks
Agree.... And I've nearly rolled trying to get from the left trail to where it intersects with the main trail again. That is seriously off-camber. But, I'm a sissy when it comes to that kind of stuff.
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  #10  
Old 08-28-2014, 08:22 AM
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Great input guys. We will go up the right line at this spot. I went left last time and it was tricky. Right looks harder as you approach but is indeed easier.

We wanted everything after Red Cone to seem easier.

The views up there are spectacular!
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