Thread: Low-budget/T-Bucket Pickup

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So how long did you set there, holding the imaginary steering wheel and making "car sounds"??? rofl..

You know we've all done it at least once! 8-)

Good for you, you're making it happen.

For some reason a guy has to do that once in awhile. It gives the allusion that it's almost finished. It sure looks good from here.

It looks nice! Do you plan to go with a pick up type bed or a turtle deck?

Yep, it rolled in and out super easy. It must be close to done right?!

My wife seemed pretty amused that I was outdoors taking pictures of it.

I am going to build a wood stake pickup box.

Please check your 4 bar angle alignment.

I know in the picture the pinion is angled down. I had not yet taken the time to adjust the correct bar lengths.

Please check it through its travel (up/down). My calcs may be wrong, but it appears your geometry out of sync causing the differential to excessively tilt as it goes through its swing.

keep in mind on this light of a car the travel will likely 3 in or less .

JMHO, ideally you want to minimize any differential to motor angle changes, excessive (or misaligned) angles will eat u joints, bearings and transmission tail shaft bushings. Only trying to help, and again, JMHO...

That's a good idea. I'll unhook the spring and swing the rear end through its travel to see how much it actually changes.

don't swing the rear end up or down-leave the tires sitting on the ground/floor, and raise/lower the car---If drive line angles are set up for ride height, the rotational differances will only be one half (or less) from setting as the chassis goes up and down.

That image of the four bars is extremely a poor choice to use as the brackets aren't even in the same place on the frame .


That

So you're saying delta-Y to delta-theta differentiates from axle to chassy movement.

Is that resultant from the front chassy resting on its wheels?

Why wouldn't you want to investigate from the more extreme method?

The wheels don't move up and down-the chassis does





why did you post an image that is poorly done with the components/brackets in different locations?

And with aprox 3 inch of travel-with the set up / angles at ride height, there will only be 1 .5 up /down for only brief micro seconds of time and the angle changes won't be that severe-also---those momentary changes are what the u-joints purpose are for------

Originally Posted by jerry clayton

why did you post an image that is poorly done with the components/brackets in different locations?

I did the drawing as an illustration taken from OP's post #150. The drawing is simply to show conflict in movement and geometry, not a guide or anything else. While the usual travel of the differential is small, it appears the geometry of the 4 bars may cause severe conflict and under extreme conditions may cause damage or harm.

Sorry for the ......................goodby.....................

What are you defining as the directrix? The frame or the ground?

If the frame is set parallel to the ground and the axle is moved up / down then the differential angle can be measured relative to gravity. Furthermore, the differential angle relative to the ground is irrelevant. The angle of the differential is relevant only in respect to the transmission.

It would seem that raising / lowering the axle, with the frame parallel to ground, and the angle measured relative to gravity would provide the more accurate result.