Ok, so you know how I am, lets just get that out of the way.  So yesterday the kid at Cliffs is telling me that hes less worried about the service limit thickness but to watch out for grooves on the rear brake rotor because that will chew through my new pads quicker.  So Im hemming and hawing to myself all the way home grumble, grumble, another $80, etc, etc.  Keep in mind that Ive been schooled on the Pres principles of maintenance and I try my best to be on constant guard to find the right balance between proper maintenance and not wasting money.

Still hemming today (we said lets drop that), so I break out the owners handbook and dive for the specs.  It says to replace the rotor if the thinnest point is, get this more than 0.4mm thinner than the nominal dimension (this is where the pad doesnt contact).  Ha!  Im saved, a number that can make a decision for me.  Good deal, this is much better for my mental health.  So I jump downstairs and slap a micrometer on the disc and measure.  Ok, if I remember how to read these things I get 0.160 (inches since these are my grandfathers tools and metrics werent invented yet).  I go to the thinnest spot and get 0.122.  Thats a difference of 0.038 shoot upstairs to convert that to mm with a calculator and its  0.956mm!!!!  arrghh!!!!  More than double the limit!!!!!!  I feel a cold shiver run down my spine and I grow dizzy at the sensation that I could have got killed on the trail last year.  Man, I cheated death.

But honestly, what do engineers know anyway.  It looks like it has plenty of meat left and it is another $80 and all.

#5

PS> Pres, I have a confession.  While picking up the new torsion bar for the sled, I also needed one of the slide blocks that was lost on the broken side.  However, there is a superceeded part number for something called an anti-rattle slide block.  Old part: $1.22; new part: $12.  Now do you think I could really buy just one anti-rattle block????  So Ive failed in both cases.  Give me an F.