67 bug feels unsafe

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Piledriver
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Re: 67 bug feels unsafe

Post by Piledriver » Sat Jan 13, 2018 10:12 am

Don't forget the tire pressure offset, factory spec'd 17 PSI front, 28 rear. or thereabouts.

With 32 in all 4 corners it will want to go backwards down the freeway.

With staggered tires it can be less of a delta but something to look at that's free.
Its a pretty big knob.
I, for one, regularly embrace our new robot overlords, as I am the guy fixing the robots...

Ol'fogasaurus
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Re: 67 bug feels unsafe

Post by Ol'fogasaurus » Sat Jan 13, 2018 12:39 pm

Garrick, the eccentrics you use in the front end for alignment, are they new or original equipment? As I understand it the new style you see for sale are a bit different; they are drilled for cars with very low front ends which is why the hole looks to be (and is) at a bit different angle.

GARRICK.CLARK
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Joined: Fri Aug 26, 2011 12:01 pm

Re: 67 bug feels unsafe

Post by GARRICK.CLARK » Sat Jan 13, 2018 1:57 pm

Hi Pile. I'll set it the tyres at 17 front and 28 rears thanks.
The eccentrics I bought are new ones with the hole further over in the nut to achieve more camber. Only I'm not getting the wheel to tilt further in at the top. I can only get it to be straight up.

rs58rag
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Re: 67 bug feels unsafe

Post by rs58rag » Sat Jan 13, 2018 10:44 pm

Make sure all front end parts don't have excessive wear and check front spindle nut for correct setting/tension on wheel bearings. Adjust excess free play on steering box, if any.

Ol'fogasaurus
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Re: 67 bug feels unsafe

Post by Ol'fogasaurus » Sun Jan 14, 2018 12:10 am

See if you can find some stock ones and try them. I don't have any spare ones otherwise you could have them.

Lee

66brm
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Re: 67 bug feels unsafe

Post by 66brm » Mon Jan 15, 2018 6:30 am

A 3/4 bar in these light cars is huge, and may push the front into the zone of slipping the front rather than gripping. I run a stiffer than stock front bar but coupled it with a rear sway bar of equal size in the rear. This is k and l front and short axle swing rear.

GARRICK.CLARK
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Re: 67 bug feels unsafe

Post by GARRICK.CLARK » Mon Jan 15, 2018 12:00 pm

Thanks 66brm. this is what I have been thinking , I don't want it to start slipping at the front or waste my money. Think I'll try a cut n sleeved standard one see how that goes.

Ol'fogasaurus
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Re: 67 bug feels unsafe

Post by Ol'fogasaurus » Mon Jan 15, 2018 12:58 pm

Remember, a sway bar is a spring. The idea is to mimic (so-to-speak) some of a beam axle's good parts into a IFS setup. (https://en.wikipedia.org/wiki/Anti-roll_bar)

Bruce2
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Re: 67 bug feels unsafe

Post by Bruce2 » Tue Jan 16, 2018 2:48 am

Back in the olden days you could get a 5/8" diameter front bar. IMO this is about right, but I'm pretty sure nobody makes them this size today.
A friend who has a 67 Beetle also agrees, so he installed two stock bars, piggy-backed in the stock bushings that were slotted.
I agree, 3/4" is too stiff. According to my quick calculation, the 3/4" bar is 13 times stiffer than stock.

Ol'fogasaurus
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Re: 67 bug feels unsafe

Post by Ol'fogasaurus » Wed Jan 17, 2018 5:55 pm

Bruce, you are right in it being too stiff but your figure I think might be a bit off. I think you have the two torsional bars/springs somewhat working against each other and the grouping of them becoming actually stiffer because of it. With a leaf spring and the way they work I don't that combining them isn't as true. I could be wrong though.

Lee

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