Would these fit my stock '87 and be an improvement ???

[Capn Ron]

I'm humbled   and now convinced of disc side flex.

Hein,

I too thought that having a dial indicator on both sides of a caliper would be the best way of measuring, but as you said...that would be exceedingly difficult as I have just one dial indicator and about six other hobbies that need my attention (trying to get my rock crawler finished in time for Moab in three weeks  ).  Given that, I re-set up the dial indicator attached to the rotor and detached the caliper from the fork allowing it to "float".  Sure enough...it made a difference.  Where I was reading .0045" of flex yesterday, I'm now reading about half of that.  I'm calling it at .0025"...So, to some degree the caliper being fixed to the fork essentially "pulls" the rotor a bit to one side.  Re-attaching the caliper to the forks, I'm again reading very near the original .0045"

That's close enough for me to compare to a blue dot caliper when I have access to one.

Cap'n Ron. . .

[hein]

Ron

Remove rotor bolts to elimate some disc flex out of the equation.

Hein.

[Capn Ron]

Ron

Remove rotor bolts to elimate some disc flex out of the equation.

Hein.

Someone once told me, "Don't let 'perfection' get in the way of 'good enough'."  I clearly struggle with this...probably why he thought it was appropriate to tell me that. 

In this case, I think I'm at "good enough" for what we're trying to solve.  On the perfection front, you're the kind of machinist that I would want working on my engines.   

For now, I'm spending the rest of the weekend under the rock crawler and riding the FJ to the Lancaster air show.

Cap'n Ron. . .

[ribbert]

Seeing as how it was my suggestion that started all this perhaps I can bring it to a conclusion with this pearl.

"The reason they are marked 1.....5 is that it indicates the number of fingers you brake with. So, if you brake with two fingers, turn it to "2" and so on"

It's from a motorbike forum, so it must be true.


While some people are having a bit of fun with this discussion and the findings are interesting, I can't help but feel it is largely fuelled by cabin fever and the onset of the Northern riding season will see these types of threads consigned to the darkest corners of the forum until next Winter.

Strangely enough I look forward to our Southern Autumn/Winter as my favourite riding season. I don't like riding in the heat, but our Winters are not as savage as most of you are experiencing.

Noel