Re: TOBY TAB alternatives

["Toby Peterson <tobyp@xxxx>" <tobyp@xxxx>]

Harold - Based on this message, it sounds like the bracket acts as a 
secondary retention feature to hold everything together in the event 
of a catastrophic failure of the TAB, bushing, or bushing attachment. 
This is important to note because some people may think that this 
bracket is designed to create a "double shear" joint, which would 
reduce the stresses on the TAB's to a very manageable level. I 
remember a post from Darryl Tinnerstet where he talked about the fact 
that it is not possible to create a double shear joint without a major 
redesign of the frame attachments and the trailing arm, because of the 
motion that the joint goes through as the wheel moves up and down. 
This unusual motion is caused by the geometry of the angled trailing 
arm, together with the angle of the frame "rail". The new SS frame 
that Pearce Design has does incorporate a spherical bearing into a 
true double shear joint, but it requires a new trailing arm and frame 
attachment. Why do I point all of this out? To make sure that 
everybody understands that this bracket, while it is probably a good 
idea for safety in the event of a failed TAB, does not prevent the 
failure of the TAB. Naturally, I'm referring to the OEM (or currently 
offered equivalent) bolts. I'm quite sure the List won't be getting 
any reports of failed TOBY-TAB's. On that note, I have received a 
number of off-List messages in support of the second batch, and I will 
be posting further information on that program very soon. Stay tuned, 
and thank you for your support!

Toby Peterson VIN 2248
Winged1


--- In dmcnews@xxxxxxxxxxxxxxx, "Harold McElraft <hmcelraft@xxxx>" 
<hmcelraft@xxxx> wrote:
> I purchased one of Dave's TAB Kits years ago. It is one of those 
> things I always thought the original design should have included. It 
> does require some drilling (no big deal) If a TAB should ever come 
> lose or break it is caught by a bracket support. No major 
> destruction or loss of control. It is good insurance TOBY TAB or 
> regular TAB.
> 
> Harold McElraft - 3354