Chassis Safety Loop Clarification

[bernieg]

Hi guys,

I'm after clarification on what is required when mounting Driveshaft safety loops to a chassis rail. I know what is required for bolt size and rating, and what is required on the driveshaft safety loop side. My question is,

If I run 2 bolts per side to attach the mounting plates,

Do I also need to sleeve the holes where the bolts run through the chassis? (Or is it fine as long as I have washers both sides and Nyloc nuts)

Or would it be better to have nuts welded into the chassis that the bolts then connect to?

Thanks

[Todd]

You're on the right track, yes it will need to be sleeved / have crush tubes fitted.

Here's the wording you're after:

5.20.2
A fastener which attaches structural sections, brackets, or
mechanical components to RHS, channel, or tubular chassis rails
or cross-members in a low volume vehicle, must pass through a
tubular steel reinforcing crush-tube that:
(a) is manufactured of a material with a wall thickness of not
less than the material used for the main chassis rails or
cross-members; and
(b) is of an inside diameter that provides a close tolerance fit
for the bolt; and
(c) is inserted within the chassis rail or cross-member through
a hole that provides a close tolerance fit for the
reinforcing, on the face of the chassis rail or cross-member
opposite to that which the component is positioned
against; and
(d) is fully welded to the face of the chassis rail or crossmember
opposite to that which the component is
positioned against.

[bernieg]

Thanks Todd, exactly what I needed.