Re: Driveline vertical angles for custom chassis- opinions?
[Re: radar]
#2534336
08/10/18 07:06 PM
08/10/18 07:06 PM
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Joined: Jan 2003
Posts: 7,477 Minnesota
Hemi_Joel
master
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master
Joined: Jan 2003
Posts: 7,477
Minnesota
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you want the centerline of the crankshaft and the centerline of the rear axle pinion parrallel under power. So you build it with the front of the pinion angled down 2-7 degrees in relation to the crank centerline, depending on the type of suspension and the power.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Driveline vertical angles for custom chassis- opinions?
[Re: radar]
#2534531
08/11/18 12:19 PM
08/11/18 12:19 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Is it just the issue of having to replace U-joints more regularly on a race car while gaining a tiny bit of power not used to work them so they stay free? Should I aim the trans at the pinion and let it eat? Or is it worth the half a pony or whatever to make the needle bearings spin enough to be happy in the U joint cups? You seemed to be worried about one thing, the needle bearings not being rotated enough. Don't Worry about that. The Dynamic movement of the axel and driveline will always keep them moving no matter how straight you align them. Unless every driveline angle is welded made 100% solid, the needle bearings will see Movement, period, don't worry about it..
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Re: Driveline vertical angles for custom chassis- opinions?
[Re: radar]
#2534864
08/12/18 12:33 AM
08/12/18 12:33 AM
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Joined: Jul 2007
Posts: 1,682 Philadelphia
radar
OP
top fuel
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OP
top fuel
Joined: Jul 2007
Posts: 1,682
Philadelphia
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Ok so just worry about packaging and get it as good as I can and don’t overthink it. Thanks for the thoughtful replies. Man I can’t wait to rip this thing around when it’s done! I have a build thread on the dodge flathead site- it’s super easy to post pictures there so when I come in from the heat in my driveway to get a dry shirt and sit in front of a fan for awhile I post tons of updates on there. I just finally got the chassis shortened up and the body fitting pretty good this week here’s a link and apologies that I haven’t figured out how to get pics hosted so I can post them here. Link to page 4 to see the stance of the old girl on the new chassis: http://p15-d24.com/topic/47345-512-cid-c-series-on-dakota-chassis-build-thread/?page=4Pages 1-3 have all the gory details of the build so far- remedial caveman stuff compared to the beautiful 1/4 mile rippers on here but I’m having too much fun and nobody called the township on me yet...
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Re: Driveline vertical angles for custom chassis- opinions?
[Re: radar]
#2534904
08/12/18 01:53 AM
08/12/18 01:53 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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383 man
Thanks for the response too- I think you get what I’m talking about. I am definitely getting the crank aimed right at the pinion and parallel to the frame rails when viewed from above.
From what I’ve read ford and chevy have a consistent amount of offset but mopar varied it through the years and different models. All of them did it for steering clearance, weight distribution, or whatever reason.
I think when people build tube chassis race cars they have custom stubby axle housings that usually just go dead center with the pinion and motor but I’m doing a low buck driveway fabricated spare parts type deal. The journey is a lot of the fun for me- learning how things work and trying new things I haven’t done before. I just want to at least understand what the rules are before I break them and when I’m done I want my hotrod to be simple, safe, reliable, and easy to work on.
When I grow up I want a nice hotrod like yours I love that red car!
Radar Thank you very much for the kind words. I do appreciate it. Good luck with your project and I hope it all goes well for you. Ron
Last edited by 383man; 08/12/18 01:55 AM.
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