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Old 05-18-2019, 09:31 PM   #71 (permalink)
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Quote:
Originally Posted by freebeard View Post
Cool beans.

slowmover will approve.
Sure do. Pickups get past any semblance of road stability at 65-mph.

A Panhard Rod for the rear axle is the usual step. (Contact SUPER STEER). An anti-roll bar also (and the front bar moved up one step in size).

Remote reservoir shocks (FOX, KING or BILSTEIN). The step up from entry level non-remote.

MOPAR used to have a kit (1970s) that fitted a shock absorber from a plate under the axle mount along the upper forward part of the leaf spring to the front eye bushing. Had to do with axle tramp, but itd help here, too.

.

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Old 05-19-2019, 03:47 AM   #72 (permalink)
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Quote:
Originally Posted by slowmover View Post
Sure do. Pickups get past any semblance of road stability at 65-mph.

A Panhard Rod for the rear axle is the usual step. (Contact SUPER STEER). An anti-roll bar also (and the front bar moved up one step in size).

Remote reservoir shocks (FOX, KING or BILSTEIN). The step up from entry level non-remote.

MOPAR used to have a kit (1970s) that fitted a shock absorber from a plate under the axle mount along the upper forward part of the leaf spring to the front eye bushing. Had to do with axle tramp, but itd help here, too.

.
The lack of a stock front sway bad has also been addressed. I installed a SWAY - 134 g-max-1" front-sway-bar for 89-93 3/4 and 1ton diesel
Custom shocks and custom rear panhard are on the wish list, will be going more tord a Watts link(link to wiki) insted of a panhard bar. And for salt flat speed runs will take Aeroheads advice and run a solid rod /jack screws in place of shock absorbers. The watts link has a more vertical motion, less head bobble as the suspension cycles . Both watts and panhard will work well with the planned 4 link that is in the design phase. This wi elevate the need for traction bars/snubbers.
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Old 05-19-2019, 10:44 AM   #73 (permalink)
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And for salt flat speed runs will take Aeroheads advice and run a solid rod /jack screws in place of shock absorbers.
What's the reasoning here?
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Old 05-22-2019, 11:03 AM   #74 (permalink)
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reasoning

Quote:
Originally Posted by freebeard View Post
What's the reasoning here?
This is a recommendation of the Southern California Timing Association who does all the safety/tech inspections at Bonneville.
Some bodies are capable of lifting on their suspensions,altering their angle of attack,and coefficient of lift at speed.
Rigid members lock in the static body inclination and prevent any funny business until higher speeds,where regardless of whatever you do,the car in aerodynamically unstable.
I didn't have to address this,as I never went over 105 mph.At 130-mph the truck generated only 22-pounds of rear lift,on a 2150-pound axle load.30-pounds of front downforce.It's gonna be a different case for Gumby79.
One good bit of info from DARKO is,that Spirit is neutral in lift,and it's static weight distribution is almost a perfect 50-50 on the axles.Gumby 79 will have the potential for this in the Diesel 'Coupe" class,as a truck streamliner.

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