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#26 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: driveshaft and pinion angles
I think I got it...
trany output is @ o* so my drive shaft will be at 1 1/2* (up) and driveshaft 2 will be @ 3* up (compared to the output shaft or 1 1/2* from the other shaft) my axle needs to be at 1 1/2* I'm going to gather up an angle guage tomorrow cut out my carrier and see what I can make it look like it maybe a combo of trany wedge relocateing the carrier and some sort of axle wedge...
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#27 | |
Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: driveshaft and pinion angles
Okay yes if your tranny is at 0* you can set drive-line #1 @ 1 1/2* up, but the angle of drive-line # 2 will be determined by its length and rise or fall after you have set the rear end to 1 1/2* down (parallel with drive-line #1. Once you have your angle gauge post up some real numbers.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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#28 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: driveshaft and pinion angles
ok borrowing a gauge but can't get it till monday so here we are...
on a side note I was doing some measureing and noticed that we forgot 1 small detail...the pinion isn't in the middle??? its offset about 1 1/2" to the pass side which means that we are dealiing with a compound angle..(up and right)... I'm pretty close to flipping the carrier cheating it to one side eye ball straight and calling it good but I want to follow though so maybe someone else can learn from it.....but it is confusing the hell out of me Jeff
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#29 | |
Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: driveshaft and pinion angles
Dont worry about it being a compound angle virtually all rear axles are offset to some degree.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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#30 |
Registered User
Join Date: Sep 2009
Location: Syracuse NY
Posts: 110
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Re: driveshaft and pinion angles
I don't know if this will be any help. I have used this before to set up drive lines in heavy duty trucks
http://training.meritorhvs.com/DriveLineAngle.html
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1967 Suburban 292 3spd 1964 Chevy II wagon 1971 Monte Carlo 402BB 1964 Cadillac series 62 2dr 1964 Bonneville 2dr/ht 1967 GTO 1978 Chevy Van 30 1989 R30 Crew Dually Bonus Cab |
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#31 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: driveshaft and pinion angles
chevydude I couldn't get it to open....I think I have a grip on it and once I get a guage I will start to move things around and look for the least amount of angle...one of the issues is going to be trying to get it RIGHT at ride height..that means I can't get my fat head under the truck...I'll also be adding drop spindles which is going to change my rear axle height since the front ride height of the frame will be 2" higher ( I can make that up with air for now it will look front high but after the drop things will come back around)
I just want to thank everyone for the help and input
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#32 | |
Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: driveshaft and pinion angles
You can set it at ride height on top of some ramps or jack stands if you need extra head room
![]() Chevydude thats a really cool calculator.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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#33 |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: driveshaft and pinion angles
@ fixit-p,
Thanks for such great contributions to this thread.
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#34 |
Registered User
Join Date: Nov 2013
Location: Spring Hill,Fl
Posts: 223
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Re: driveshaft and pinion angles
I just did an axle flip and ended up with this:
Trans -1 1st driveshaft +2 2nd shaft -3 Rear end -1 Using this calc I get these numbers. http://spicerparts.com/calculators/d...gle-calculator Operating Angle 1 3 Operating Angle 3 5 Operating Angle 2 2 I'm thinking angle 3 (5) is too much? |
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#35 |
Senior Member
![]() Join Date: Mar 2012
Location: ripley ny
Posts: 2,903
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Re: driveshaft and pinion angles
excellent info #25 thank you
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#36 |
Senior Member
![]() Join Date: Dec 1999
Location: Southern California
Posts: 2,804
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Re: driveshaft and pinion angles
For a two piece shaft there are three joints. One of the operating angles needs to be at 1 degree or less. The other two should be about two degrees apart, with the pinion set at the + 2 degrees to allow for wrap or load. The reason one angle needs to be at 1 degree is because there is not another joint to cancel it out. Regarding the 3 degree operating angle rule many seem to think is necessary. It only applies to longevity. The facts on that may surprise some with the proper research. My rear trans joint operating angle is at 12 degrees and I have no worries about strength or maintenance.
My front shaft has a 16 degree operating angle on the t-case cv at ride height. It reaches almost 32 degrees at full droop. The shaft and joint will survive. Angles constantly change while vehicle is used. Setting anything exact is not something to be expected especially if the vehicle is modified.
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 Last edited by Richard; 04-05-2024 at 04:01 AM. |
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