HOT ROD & RACING CHASSIS /FRAMES & PART'S

jaded iconoclast

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Re: HOT ROD & RACING CHASSIS /FRAMES & PART'S
« Reply #480 on: May 08, 2018, 11:15:30 AM »
Some photos of the chassis for Dougs Durant Star. Excuse some of the really shitty spot welds, his mig was going nuts, spitting popping, acting really weird, had a hell of a time figuring it out, finally found a tiny piece of wire had somehow broken off and got stuck up inside the cup, was intermittently shorting it out. If you look in the background, you can see the vega trans equipped lathe.  ;D

End of the rear torsion bar sticking out of the end of the frame rail, each torsion bar rides on pillow blocks, one on the outer end of each rail, one inside the rail.

The rear panhard configuration will not make the final cut, he is not happy with it. Maybe lengthen it and attach it to a tab on the inside of the frame rail. He tacks things together and cycles the suspension through its range of travel, making changes on the fly if he doesn't like the look of things, or if he sees anything binding.

Doug hasn't fully accepted it yet, but I don't think the tie rod end in the middle of the "bone" is going to make the final cut either. He realizes its not working as-is, but he is avoiding the simple solution staring him in the face. Front and rear are actually equal length 4 bars, but the idea is to not make that readily apparent to the casual observer. Its his intent to add the '48 Ford sway bar as well. There is considerable side to side slop in the lower bars, we agree that its because of the tie rod ends in the middle. I suggested we try replacing the tie rod ends with a clevis and run it through its travel.

The ends of the upper links will attach to tabs on the backside of the axle in the final version, the outer ends of the front torsion bars will ride on a roller bearing mounted on a bracket welded to the outer ends of the axle. You can see the front pillow block for the front torsion bar in this photo. Its going to be cross-steer with a '47 Ford steering box, there is a front panhard in the works, but its not attached right now.

Heres the front end from another angle. The torsion arm is just resting on the top of the lower link here, in the final configuration it will angle upwards and ride on a roller bearing at the backside of the axle drop. The finished car will be full fendered, when you stoop down and look under the car, the torsion arm will be mostly hidden behind the axle drop.

The torsion bar stops will eventually be on the inside of the frame rails, through these slots in the rails. This has already been test fitted, but the stops have been temporarily removed so they don't interfere with cycling the suspension through its motion.

Heres the rear torsion arms, they are bent to fit, but the outer ends will be cut off and welded back on at a 45, the next photo should explain why they need some drop.

The inner ends of the rear torsion arms will ride on roller bearings attached to the cage structure on the pinion nose. The tab tack welded to the axle tube  is where the upper bar of the rear 4 link will attach. Note the tie rod end hidden by the original wishbone mount behind the brake drum. We are both trying to figure a way to reduce the gap between the ends of the wishbone, or to at least make it visually "go away" while retaining enough room for the suspension to cycle through its range of motion. If you look at the frame side on, as someone would leaning down looking underneath the car, all you see are conventional split rear bones, the rest is tucked up out of view behind the rails.

Heres another clearer view of the rear 4 bar setup

The ford rear leaf is just along for the ride, to distract the viewer from the torsion bars and four bar, and along with using a pair of cut-up rear bones as the lower links of the 4 bar completes the illusion that "its a traditional ford rear suspension". The panhard mounts to the rear axle with a steering arm off a squareback spindle.


Wanted: Used +030 TRW L2249 or Speed Pro 7061P 12.5/1 289/302 ford pistons

TS3X65MPH

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  • THANKS TO MY DAD & MOM,WIFE GLYNIS & SON STEVEN
Re: HOT ROD & RACING CHASSIS /FRAMES & PART'S
« Reply #481 on: May 08, 2018, 12:57:08 PM »
For Red
I like the pedals on this. Any close-ups of them Beppie?
That's it George.
You Aren't Living If Your Windshield Isn't Dirty.

jaded iconoclast

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Re: HOT ROD & RACING CHASSIS /FRAMES & PART'S
« Reply #482 on: May 08, 2018, 01:08:26 PM »
Wanted: Used +030 TRW L2249 or Speed Pro 7061P 12.5/1 289/302 ford pistons

TS3X65MPH

  • Hero Member
  • THANKS TO MY DAD & MOM,WIFE GLYNIS & SON STEVEN
Re: HOT ROD & RACING CHASSIS /FRAMES & PART'S
« Reply #483 on: May 14, 2018, 09:06:32 PM »
There's some work in this front end.
You Aren't Living If Your Windshield Isn't Dirty.