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Eskamobob1 Samba Member
Joined: August 08, 2016 Posts: 541 Location: South OC SoCal
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Posted: Fri Aug 03, 2018 12:49 pm Post subject: Adjust rear camber and toe without effecting ride height? |
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Hey guys,
So I am trying to figure out about lowering the rear of my beetle and am having some trouble with how to do it/if I even should do it. I had initially just planned to just use drop plates to maintain proper preload and move on with my life. However, I recently got an entire early 944NA suspension and found out that the camber adjuster on the 944 spring plates also effects ride height slightly due to the nature of semi-trailing arm. That got me thinking, is there any way to maintain camber/toe adjustability on the rear while maintaining a specific height? (buying more/aftermarket parts is totally fine)
I was planning on lowering specifically for the ride benefits of the lower CG, but it seems like this may actually be removed by the decent negative camber induced on the read wheels (plan was 2.5" to match the drop spindles I was planning for the front). Does anyone know what kind of camber a 2.5" lower will induce?
Thanks for your time,
-esk _________________ '74 - front disks/lots more work to do |
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scrivyscriv Samba Electrician

Joined: October 04, 2011 Posts: 3390 Location: Memphis
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Posted: Fri Aug 03, 2018 9:08 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| Eskamobob1 wrote: |
| So I am trying to figure out ... |
those are some good questions... The camber is an arc around a set point and I'm not sure there are any aftermarket parts that specifically re-set your camber after lowering. You can do a little tweaking with the four hub mount bolts. _________________ Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help. |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Sat Aug 04, 2018 5:58 am Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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Camber changes with height and you can change the toe in relationship to this. _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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modok Samba Member

Joined: October 30, 2009 Posts: 27757 Location: Colorado Springs
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Posted: Sat Aug 04, 2018 3:14 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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You can change the camber if you want but the suspension travel is more difficult to change. You only have 5-6 inches total travel.
I hear you guys taking about 2.5 drops all the time but I don't really get the point. IMO drop it a little OR on the stops, I would not bother having only 1 or 1.5 inches of up travel. If you want good performance you won't be changing ONE thing. Moderate drop, stronger springs, wider maybe even shorter tires. |
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Eskamobob1 Samba Member
Joined: August 08, 2016 Posts: 541 Location: South OC SoCal
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Posted: Sat Aug 04, 2018 9:33 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| modok wrote: |
You can change the camber if you want but the suspension travel is more difficult to change. You only have 5-6 inches total travel.
I hear you guys taking about 2.5 drops all the time but I don't really get the point. IMO drop it a little OR on the stops, I would not bother having only 1 or 1.5 inches of up travel. If you want good performance you won't be changing ONE thing. Moderate drop, stronger springs, wider maybe even shorter tires. |
My plan is to move up to 23.5 rear torsion bars and drop with plates to keep my preload right and downword the same and only reduce upward travel (looks like I will still have about 3.5-4” and move to 15/16x6 wheels as for tire size though, I’m not sure. I have thought about going a bit lower but until I swap the engine and transmission I don’t want to lower my cruising speed too much _________________ '74 - front disks/lots more work to do |
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Chris333 Samba Member
Joined: July 30, 2017 Posts: 665 Location: Ohio
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Posted: Sat Aug 04, 2018 10:20 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| Swapping the trailing arms left and right gives you a little more correct camber. |
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modok Samba Member

Joined: October 30, 2009 Posts: 27757 Location: Colorado Springs
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Posted: Sun Aug 05, 2018 6:42 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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I think.....you just have to get IN there with a angle finder and a ruler and figure it out. It's not a huge job, one afternoon. That's how the off-road guys do it.
I got a set of "drop plates", and tried that out on my 1960, and found only 1/2" of practical addition suspension travel past the hard stop, which meant that "drop plates" are.... pointless and even detrimental, in that case.
I revealed this info quietly, and I thought it was very interesting nobody really noticed.
https://www.thesamba.com/vw/forum/viewtopic.php?t=567022
The guy pushing those drop plates had SUCH enthusiasm, I didn't want to discourage his efforts prematurely at the time. Maybe he'd figure it out any day now. But, didn't seem to, or didn't admit it.
Since YOU seem to have enthusiasm and seem sharp.....why don't you figure it out, and tell us what you find I don't know why nobody does that. It's KINDA complex, but fundamentally it's just basically a lever.  |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Sun Aug 05, 2018 7:11 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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I assumed that Drop Plates just offset the position of the wheel as compared to the torsion bar. How is the suspension travel altered?  _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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modok Samba Member

Joined: October 30, 2009 Posts: 27757 Location: Colorado Springs
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mark tucker Samba Member

Joined: April 08, 2009 Posts: 23945 Location: SHALIMAR ,FLORIDA
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Posted: Mon Aug 06, 2018 8:46 am Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| YES YOU CAN AND YES IT'S SOME WHAT EAZY TO DO. |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Mon Aug 06, 2018 1:51 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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Okay I read the thread as painful as it was.
It seems that the DropPlates only keep the torsion spring in the same state as with a stock one with the stock ride height. It would be better in that respect anyways. _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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cbeck Samba Member
Joined: January 14, 2014 Posts: 2595 Location: high ridge, mo
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Posted: Mon Aug 06, 2018 5:54 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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My experience with aftermarket[3x3] trailing arms, sorry it is kinda long. The arms had only 2 spring plate holes, was not going to drill more until it was on a alignment rack. Stub axle center line kept moving above the spring plate center line [only 2 bolts. knew I needed more].When the center lines were off, the tops of the tires leaned at least 1" out past the bottom of the tire like a preloaded swing axle. When I drilled the other bolt holes, with the center lines lined up my camber went to zero. The guys in the off road forum explained that if the axle center line kept moving further down below the spring plate center line, the top of the tire would keep getting pulled further in the lower the center line of the axle went. Yes, it changes ride height, so reindex the torsion cars to get the height you want.
https://www.youtube.com/watch?v=0AMRpVCeBes _________________ My cut in half and rebuild thread
www.thesamba.com/vw/forum/viewtopic.php?t=647779 |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Mon Aug 06, 2018 6:14 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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The pivot of the diagonal/trailing arms and the arms themselves sets what the camber/ride height is.  _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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dirtkeeper Samba Member

Joined: February 19, 2008 Posts: 3255 Location: Left of everywhere
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Posted: Mon Aug 06, 2018 6:29 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| theKbStockpiler wrote: |
The pivot of the diagonal/trailing arms and the arms themselves sets what the camber/ride height is.  |
Those are a big factor but I have adjusted my camber as cbeck explained |
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modok Samba Member

Joined: October 30, 2009 Posts: 27757 Location: Colorado Springs
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Posted: Tue Aug 07, 2018 5:05 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| theKbStockpiler wrote: |
Okay I read the thread as painful as it was.
It seems that the DropPlates only keep the torsion spring in the same state as with a stock one with the stock ride height. It would be better in that respect anyways. |
Toe torsion bar will not be damaged with more droop anyway, only more up travel, so, I don't get the hype.
All the CURVEd spring plate does is go around the UP stop, which would allow 1.5" more up travel before the stop hits, but, there isn't much point in that, because the suspension can only go 3/4 past the factory up stop. They put the stop there for a reason!!
You have to raise the transmission to go farther up.
But, that's just ME, and my particular setup. Everybody has a different combination of parts, so, just have to check and see. Over traveling a swingaxle and busting off the side plates has been an OOPSIE since the dune buggy was invented. It's not any news to me. It's news to new guys tho. next time I get an IRS apart I'll check, but, it might be awhile. |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Tue Aug 07, 2018 6:21 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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I made a simple model of the IRS with just a bent up piece of wire which takes all of the myths out of it.
So what do the drop plate sellers advice to do with the bump stop? It just looks like snake oil.  _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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Chris333 Samba Member
Joined: July 30, 2017 Posts: 665 Location: Ohio
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Posted: Tue Aug 07, 2018 7:06 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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I don't know if this is any help.
I ground away the upper stops and kept my (double) spring plates whole:
Cut the bump stop off:
Later on I flipped the arms and notched them for bags:
I was able to re-mount the lower shock mounts back to the arms and came up with this for the uppers:
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Chris333 Samba Member
Joined: July 30, 2017 Posts: 665 Location: Ohio
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Posted: Tue Aug 07, 2018 7:07 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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| I read elsewhere that flipping the arms gives you 2 degrees less camber. |
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theKbStockpiler Samba Member

Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Tue Aug 07, 2018 7:30 pm Post subject: Re: Adjust rear camber and toe without effecting ride height? |
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Has anyone tried to flip Reduction Boxes?  _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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