Here's the run that ended my day, listen for the diff getting progressively louder through this run. Nothing at the start, ugly by the end:
http://youtu.be/N-WPHJkBxJg

This diff was making a tiny bit of noise before this, kind of a rhythmic whooshing noise that sounded a bit like a wheel bearing going bad. I misdiagnosed it as something else, as I installed this spare diff after having a very similar noise in my original diff. My logic? Same noise after a diff swap = must be something else. Bad logic in hindsight, but it seemed reasonable at the time.

I'm picking up a local used diff this weekend to get the car rolling again.

 

Ouch, that tire shredding STR power had it's way! Thx for posting. Just curious- regular fluid changes?

 

Haha, stock tune! This diff had fresh oil put in just ~100 miles ago. No idea what the previous owner had in it.

The first diff that I removed (after it started making noise) got fresh oil twice a year. It had between 500 and 600 autox launches on it, but it finally started making noise at the Lincoln Pro.

 

Dang...I wish these cars were built stronger.

 

Might be worth having a diff sent to Puddymod to get looked over. Buying a used diff is a crapshoot...

 

That course looks like the longest slalom Ive ever seen. Kinda boring

 

sure is one fast course! ouch on the diff man, get her patched up and get her back on the runway! literally. awesome driving. btw what datalogging system were you using?

 

Hope it goes well. Text me if you need a hand.

 

here is the course at centralia huron airpark, in ontario. WOSCA is the organizing group, under casc-or. 1.8 kms long. i designed this one with input from jvf1.

darcy

http://youtu.be/MQ0iiN2nnaM

 

The new diff is in! No noise! I checked it extremely carefully before handing over the money. Any tiny notchy feeling while turning by hand indicates big issues.

I'd love to get Puddy to check one over, but shipping across the Canada/US border is a serious pain/expensive. This diff was only $300 locally, I've got two spare cases to rebuild now. I'm deciding what to do next.

You know what's more boring than a long slalom? Not autocrossing at all. This is our only lot, so we make the best of it. At least it's also slippery, bumpy, and far away from anywhere. LOL! Admittedly, this was not one of the better courses they've ever set up.

I'm using a Race Technology DL1. Plus, I've just tied it into an Android tablet with SoloStorm for at event analysis. I'm loving it in the 2 runs before the diff blew.

Darcy - I'm envious of your runway width!