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Old 12-25-2008, 07:32 AM
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Speedway four-bar question

I have a Speedway four-bar for the rear of my Model A...
http://www.speedwaymotors.com/Rear-S...Kits,3400.html ....Photo of unit (Enlarge the image)....
After getting the kit I notice the bracket construction... The rear axle bracket looks fine, "sandwich style" bracket, as they say, which puts the bushing bolt in double shear.
However the front frame bracket is not "sandwich style" but has tubes in it for the bolts, and the bushing is outboard of the bracket on the bolt in single shear. Not the strongest setup in my opinion. But is it OK?
Anyone used this set? Any problems or comments?

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Old 12-25-2008, 08:46 AM
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I have single shear both front and back on my sedan delivery.

Front:



Rear:



However, this is not going to be any sort of strip demon. Nor do I have much cause anymore to burn off a set a tires. Just a basic cruiser.

If you have intentions of putting a lot of horsepower into the car or you like to abuse the throttle quite often, you might want to design some brackets with double shear. Never hurts to error on the side of more strength.
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Old 12-25-2008, 11:24 AM
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Yup, size does matter....

Engine size, that is....
I have a SSBC... that's a small, small block Chevy.
In other words, a 4.3 V6 Chev. 262 cubic inches. Looks like single shear on the forward grade 8 bolts might work OK. I'm just going cruising, no drags or hammering on the go pedal.

BTW Cboy, REAL nice chassis there. Great workmanship, nice paint!

Tom
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Old 12-26-2008, 08:20 PM
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cboy's stuff is nice to look at, isn't it.
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