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Author Topic:   pinoun angle help
stoker
Gearhead

Posts: 159
From: folsom,cal,
Registered: Jan 2002

posted 04-09-2003 10:32 PM     Click Here to See the Profile for stoker   Click Here to Email stoker     Edit/Delete Message   Reply w/Quote
finally checked it and came up with -1.if trany shaft was -1.5 and pinion was +.5 did i figure right?i was thinking about trying two degree shim to give me -3 degrees pin angle.this is mostly street driven (like it was stolen).what metal aluminum or steel for shims?

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 04-09-2003 10:56 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
You want -3 degrees on the pinion, not the drive shaft.
Place the angle finder on the third member behind the yoke.

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stoker
Gearhead

Posts: 159
From: folsom,cal,
Registered: Jan 2002

posted 04-09-2003 11:34 PM     Click Here to See the Profile for stoker   Click Here to Email stoker     Edit/Delete Message   Reply w/Quote
this is how came up with -1 degree.i removed driveshaft and placed angle finder on tranny output shaft seal and factored that it is 90 degrees to trany shaft which was -1.5 degrees then i placed angle finder on pinion yoke and factored the 90 degree.it read +.5 so the difference should be my pinion angle (-1) correct?

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afret
Gearhead

Posts: 180
From: Lancaster, CA
Registered: Feb 2003

posted 04-09-2003 11:48 PM     Click Here to See the Profile for afret   Click Here to Email afret     Edit/Delete Message   Reply w/Quote
Sounds like your math is right on target.

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Ryan Wilke
Gearhead

Posts: 2060
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 04-10-2003 08:50 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Stoker,
I'd steer away from aluminum. I had some aluminum wedges and they started to "flatten" out. I went to steel. If you decide to make-your-own, remember to include the spring center bolt hole (to keep it from squirting out) and to make them as long as your spring perch.

Just my 2 cents - Good Luck!
Ryan

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stoker
Gearhead

Posts: 159
From: folsom,cal,
Registered: Jan 2002

posted 04-10-2003 06:15 PM     Click Here to See the Profile for stoker   Click Here to Email stoker     Edit/Delete Message   Reply w/Quote
thanks for replys,my reverse eyelet springs are five leaf and brand new.just wonder how many degrees they let pinion swing as to how much wedge i want to use.car has ran 12.38 with limited traction.again if anyone has any advise,please tell

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stoker
Gearhead

Posts: 159
From: folsom,cal,
Registered: Jan 2002

posted 04-10-2003 06:17 PM     Click Here to See the Profile for stoker   Click Here to Email stoker     Edit/Delete Message   Reply w/Quote
oh alex,as long as you put angle finder on yoke when it is vertical wouldnt it be the same as on third member?

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steve'66
Gearhead

Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000

posted 04-10-2003 07:59 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Kevin,

Just make the pinion point 4 degrees down from the straight line of the driveshaft. Maybe even a little more depending on how much gap you'll have between the traction bar's snubbers and the leafs. Remember you don't want the pinion to rise above the driveshaft's line on launch, just come up to straight. Good luck, and yes steel shims are best.

SteveW

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