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Cracked frame repair
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Supporting Member of Barthmobile.com 6/12
Formally known as "Humbojb"
Picture of Jim and Tere
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Ed, is the design on a 91 28' Breakaway the same?
Jim


Jim and TereJim and Tere

1985 Regal
29' Chevy 454 P32
8411 3172 29FP3B
Gear Vendor 6 Speed Tranny
 
Posts: 3693 | Location: madisonville tn usa | Member Since: 02-19-2005Reply With QuoteReport This Post
First Month Member
Supporting Member of Barthmobile.com 11/13
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quote:
Originally posted by MWrench:
Yes I think this was a major screw up by Spartan! No comments so far about this from them. The placement of the bar and the length of the bar all have some contribution to the problem.


This further reinforces my dislike for short Panhard bars. I have always disliked them for theoretical reasons, but now I have an example to point to. A longer bar would put less force on the frame during normal up and down suspension travel. Of course, in a sway-reduction situation, the frame attach point forces would be pretty much the same, since it is a side thrust issue, rather than an angular displacement issue.

quote:
see if there is any way to lessen the fight between the spring movement and the panhard rod.


Full-width Panhard bar? (sotto voce)


.

84 30T PeeThirty-Something, 502 powered
 
Posts: 6169 | Location: AZ Central Highlands | Member Since: 01-09-2001Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 03/22
posted Hide Post
quote:
Originally posted by Jim and Tere:
Ed, is the design on a 91 28' Breakaway the same?
Jim


No, the diff is not the same as mine (Dana 80 vs. Eaton 15040s) and although the frame attachment point should be similar, the bar is probably twice as long as mine. Hence, the displacement forces would be at least 1/2 of what a shorter bar (like mine) would exert.


Ed
94 30' Breakaway #3864
30-BS-6B side entry
New Cummins 5.9L, 375+ HP
Allison 6 speed
Spartan chassis
K9DVC
Tankless water heater
 
Posts: 2178 | Location: Los Gatos, CA | Member Since: 12-08-2005Reply With QuoteReport This Post
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