Sturgeon’s Law

Ninety per­cent of every­thing is crap.


Derived from a quote by sci­ence fic­tion author Theodore Stur­geon, who once said, “Sure, 90% of sci­ence fic­tion is crud. That’s because 90% of every­thing is crud.” Oddly, when Sturgeon’s Law is cited, the final word is almost invari­ably changed to ‘crap’.

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Don’t Get Technical With Me

We took the Miata back to the dealer on Tues­day for them to adjust the acces­sory belts to elim­i­nate the squeal. They almost got it. We aren’t tak­ing it back to Colum­bia for them to have another crack at it. When the ser­vice rep returned the car Donna ques­tioned him on why it squealed and what did they do to fix it. He tried to explain that they had to adjust the belt by mak­ing it tighter so it wouldn’t slip. But that they had to be care­ful that they didn’t tighten it too much or they could ruin the bear­ing in the acces­sories. He said if it still does it, just bring it back (I guess he thinks we live around the corner.)

It still squeals, but only briefly when shift­ing while dri­ving the car spirit­edly. When you floor it with the A/C on, the A/C will cut out until you let up to shift, at which point the A/C clutch re-engages and chirps the belt. We didn’t notice it until later in the week and we for sure aren’t going to take it back to them. When I get Clunk & Thunk to help me with my shock instal­la­tion we’ll try and tighten it up a bit more.

I wish I had thought of it at the time Mr. Lazy­wrench was explain­ing their belt adjust­ment period, because I should have asked, “So, what you are say­ing is that after mak­ing over 800,000 Miatas, Mazda’s ser­vice man­ual for car says that to adjust the acces­sory belt ten­sion, You need to make the belt so tight that they don’t squeal, but not so tight that you ruin the bearings.

From a Miata Forum mem­ber red-in-la (I removed the met­ric stuff.)
Drive Belt Deflec­tion Check
1. Ver­ify the drive belt deflec­tion when the engine is cold, or at least 30 min after the engine has stopped. Apply mod­er­ate pres­sure 22 ft/lb mid­way between the spec­i­fied pulleys.

Drive belt New Used Limit
Gen­er­a­tor 0.22—0.27 0.24—0.29 0.31
P/S+A/C 0.28—0.31 0.36—0.39 0.45

What do you think? The tech­ni­cian didn’t have the right tool so he just winged it? Or man­ual, who reads the manual?

We went to the New Moon for break­fast this morn­ing instead of Sun­day to beat the crowd. We had two muffins and a bot­tled water.

Meal Cost: $7.49
Tip: 51¢
Spent Today: $8.00
Year to Date: $1613.44
Meals out, 94 of a pos­si­ble 624.

The above num­bers reflect tomorrow’s meals as well because we two extra muffins for Sunday’s break­fast. If we eat out for lunch or sup­per tomor­row I’ll change the totals.

Started down, went up, back down, still down.
Miata Top Tran­si­tions since 01/01/07: 298

2 comments to Don’t Get Technical With Me

  • Jim Earley

    Here is a good a cheap trick to stop the belt from squeal­ing. Take a small amount of valve grind­ing com­pound and put it on the belt. My old mechanic showed this to me on my pick up truck. Worked there, should work here. let me know
    Jim

  • The car goes into the shop of a local guy for shocks on Tues­day. I’ll ask him to tighten things up. If that fails to rid the noise per­ma­nently I’ll give that a try. Thanks.