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Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Monte_Smith] #1618498
05/15/14 01:55 PM 05/15/14 01:55 PM
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Thumperdart Offline
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FWIW I`ve been driving/racing my junk w/as much as 7 degrees nose down w/multi-leafs and never a problem. The drive shaft in my car now is 13+ years old on the same u-joints and no problems and just brought it down to 4-5 nose down w/my rear end mods. 0-on trans and 4-5 down on rear w/Cal-tracs...........

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: cudaman1969] #1618499
05/15/14 01:58 PM 05/15/14 01:58 PM
Joined: Nov 2004
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North Alabama
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Oh no.........a chart printed on the internet.....well damn it. I guess it HAS to be true...........LOL!!!

There are two sides and this will never change and it seems pretty damn obvious that both work.........which means........in the REAL world, it doesn't really make much of a difference.

And my statement above about the 2 down and 2 up.......you are not getting my meaning. You are so concerned about proper "angles" that you are missing the point. What if the trans was 6 down, would you put the pinion 6 up? If you did, the shaft and joints would have a stupid angle and will NEVER stay under a high hp car....yet the "operating angle" would be deemed correct under your rules. That is the point.

Look, you will NEVER convince me and I will NEVER convince you, so this is a waste of time.........just like it ALWAYS is.

Monte
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Monte_Smith] #1618500
05/15/14 02:02 PM 05/15/14 02:02 PM
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They need to come towards each other not go away..........

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Thumperdart] #1618501
05/15/14 02:35 PM 05/15/14 02:35 PM
Joined: Aug 2003
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Bend,OR USA
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Quote:

They need to come towards each other not go away..........

The pinion U joint should raise up under acceleration towards the tranny yoke angle to reduce the pinion angle, not be aligned standing still and move up past straight alignment and push away from the tranny yoke angle forming a upside down V at max pinion shaft travel All U joints need to have a difference in angles to the shafts driving them to work and make the inside needle bearings rotate, if they don't rotate they will wear(bernell) into the pinion shafts and distentrigrate from lack of lubrication

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Cab_Burge] #1618502
05/15/14 03:07 PM 05/15/14 03:07 PM
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In my little way that`s kinda what I was saying Cab..........

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Thumperdart] #1618503
05/15/14 03:31 PM 05/15/14 03:31 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Why does something so simple have to become so complicated?The comprehension of the process has been explained over and over yet many want to complicate the process to make it seem like rocket science engineering.Weather the joints are inline or on parallel planes the final pinion angle,1,2 or 4+ degrees constitue the working angle and the needles will move freely when the load or movement occurrs in the joint.It's not like they are constantly rotating and as long as the have lube will last.U-joints are made to compensate for varainces in alignment,up and down,left and right.The best case senerio is the least amont of angle in any direction.Some where there is an engineer or chassis builder and HFAO

[IMG]http://i430.photobucket.com/albums/qq21/ajcasini/max_zpsdppwd9km.jpg[/IMG]
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: B G Racing] #1618504
05/15/14 04:18 PM 05/15/14 04:18 PM
Joined: Dec 2005
Posts: 11,484
Fulton County, PA
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CMcAllister Offline
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Quote:

2° trans down and 2° pinion up is parallel and the relative pinion angle would be 0° under load...Not 2° nose up which is what I think some of these guys are interpreting it as...drive shaft angle is irrelevant as u-joint angle will be equal and opposite at both joints.



If you lower the trans yoke by lowering the front of the car or put a big tire on it and raise the rear end up into the chassis, the pinion angle (difference between driveshaft and pinion angles) will quickly go positive at some point, if parallel is the only thing taken into consideration. Imagine moving the centerline of one of the yokes up or down while the other remains stationary. What will that do to the operating angles, parallel or not?

I agree, having the trans and pinion centerlines parallel or close to it is beneficial and can be accomplished with engine/trans location. However, pinion angle, the relationship between the d-shaft and the pinion, has to remain correct according to the type of suspension and never go positive. It is a setting, not an adjustment.

It's not that one's right and one's wrong. Both matter, but one is most important and has to be right.

If the results don't match the theory, change the theory.
Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Monte_Smith] #1618505
05/15/14 07:53 PM 05/15/14 07:53 PM
Joined: Jan 2003
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Quicktree Offline
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Quote:



There are two sides and this will never change and it seems pretty damn obvious that both work.........which means........in the REAL world, it doesn't really make much of a difference.



Monte

you finally figured it out

Re: WHAT IS THE TOOL TO SET PINION ANGLES [Re: Quicktree] #1618506
05/15/14 09:04 PM 05/15/14 09:04 PM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
Quote:

Quote:



There are two sides and this will never change and it seems pretty damn obvious that both work.........which means........in the REAL world, it doesn't really make much of a difference.



Monte

you finally figured it out



Oh, it will change alright.

Dont like to say never. Its a 20 year side project of mine to get it to change. Only 10 years into it though.

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