|
Author
|
Topic: Pinion angle
|
Hans olsson
Gearhead Posts: 622
From: Sweden
Registered: Apr 2000
|
posted 02-03-2001 12:58 PM
   
Hey its me again! Whats the big deal about pinion angle,how much is right and what happens when you change it ? Our car has a best of 1.59s 60 foot and 11.92 et  . We use a C4 trans and calvert style bars.Hans ------------------
-71 351c Mustang E/SA 11.92-110 mph, more to come!!
IP: Logged |
Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
|
posted 02-03-2001 01:02 PM
Hello again Hans. I will send you a detailed e-mail about possibly racing in the USA this year later today. Pinion angle is critical so as not to have any "binding" in the u-joints of the drive shaft. This leads to less rolling resistance. Most automatic drag cars like 1.5 to 3 degrees.  ------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
IP: Logged |
TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
|
posted 02-03-2001 01:43 PM
Hans even tho my car has welded-on Thunderbolt style traction bars that can't allow pinion angle change,i still have the pinion tipped down a couple degrees... it plants the tires harder and tries to lift the back end to straighten it.
IP: Logged |
Hans olsson
Gearhead Posts: 622
From: Sweden
Registered: Apr 2000
|
posted 04-22-2001 01:13 PM
At last, i measured the angle to 1.5 deg. Could we benefit from 3 deg pinion angle,or is the change to small to notice? I assume that i should measure the difference in angle between the driveshaft and the pinion. Hans------------------
-71 351c Mustang E/SA 11.92-110 mph.
-87 volvo daily driver.
IP: Logged |
Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
|
posted 04-23-2001 05:53 PM
Yes Hans, you can benifit dramatically in your 60 foot times by changing it to 3 degrees or better. ------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
IP: Logged |
Rustang
Gearhead Posts: 733
From: Clarion PA
Registered: Nov 2000
|
posted 04-23-2001 10:34 PM
I've never fully understood the mechanics of pinion angle. Does having the pinion angle down have some effect on leverage(lift) on the body? I've heard racer's claim more pinion angle provides a harder hit off the line.
Or is it simply a matter of having a more efficient transfer of power thru the dshaft assembly when the pinion is close to zero when torque is applied? I've never seen a complete explanation on why this works! ------------------
IP: Logged |
Mustangsandmore Forums
