[ZeGermanHam]

Originally Posted by george kujanski

In the catalog it's referred to as "armor".

George

That's more in line with my perception of how a spiral metal sleeve would function the best. To me, it seems the revised brake line routing on the H.O. cars was to protect them from heat, and the revised location of the brake lines then necessitated the addition of spiral shielding to protect them from physical damage from rocks & other debris. So it's less about heat protection, and more about line damage.

The brake lines aren't going to get hot on the underside of the front crossmember next to the upper spring pocket as found on H.O. cars, so if heat protection was the intended function of the spiral shielding, I don't know why they'd have used it in that location. Seems like you'd want it on the top and rear side of the crossmember instead if protection from heat was the goal.