how much effect does having your pinion angle off have on causing the driveshaft to break on you easier???


one last question, how mnay of you have a Highperformance driveshaft from Denny's or similar and still going strong, any problems, guess i'm gonna invest in one of those suckers.

damn this sucks, my quest for 11's n/a has haulted for now, hope i can bring her back stronger than before though.

 

anyone here using a driveshaft with this company out of San Antonio?
http://www.thrashdriveshaft.com/
prices seem ok, just want to be sure i get the right driveshaft the first time.

 

Judge for yourself:

 

well that answers the question,

same happened to mine yesterday night, just like that,

funny how it took so much abuse with the 3:73's all the way to 140, then w/ 4:10's on for a week, 3 wot's later and she was down and out.

 

cuz you increased the rpm speed of the shaft with the 4.10's. The shaft has probably been right on the edge of "critical speed" with the 3.73's. Then 4.10's put it over the edge. Harmonics. That shaft looked like a sign wave under there.

yes, proper alignment, balancing, and pinion angle all play a role in the life and death of your driveshaft along with the critical speed of the actual material/shaft itself.

 

I guess I should have my driveshaft balanced after the 4.56s, huh?

 

not necessarily, but you might need to.

two scenarios,

1st, on the dyno for example, if your testing to 6k rpm in 3rd gear, 1:1, you will be fine with the 4.56's if you were fine with the higher gear-set.

2nd, on the road, if you where previously going 140mph with no problems using the higher gear-set, changed to 4.56's and tried to go the same trouble free 140mph afterwards then yes it would probably be in your best interest to minimally, high speed balance your d/s, but also you might need to buy a different d/s all together, one with a higher critical speed than your current setup.

 

this is what I am talking about!!!! rpm is rpm, 6000rpm will be 6000 with whatever gears you use, just a different mph.

 

that's the point I was trying to make a few months ago but I was in the middle of a bunch of **** at work when I was typing so I wasn't paying much attention and was hurrying so what I typed came out all screwy

 

Not exactly. RPM of the driveshaft, gears and wheels/tires will be different than RPM of the motor, depending on what drive gear is engaged.