Driveshaft balance

Now that this has been beated to a pulp & you have your answer; more trivia.

I conferred w/ someone familar w/ crankshaft balancing about this.

He said they start slowly, and as the imbalances get smaller (via adjustments) it turns faster, topping out about 700rpm. This is a shop that does almost exclusively race motors so they are easily 10 times lower than redline.

He also pointed out that the faster you spin it, the harder it is to pin point the location of the problem.
 
Originally posted by Chris Wire:
Anyone seem to recall just how much the OEM runs from Mazdaspeed?
Click to expand...
$287.40 (2nd gen)

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Marty Doane
ITS RX-7 #13
CenDiv WMR
 
Chris, I took driveshaft and had new u joints installed and shaft was balanced at 3500 rpm. We went to a Truck auto parts and repair Seems to work fine.

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Tom Weaver: Logistics & Technical Support Manager IE truck driver for 1980 RX-7 ITA #63
"Hemi Haulin' Rotary" Bill Weaver Driver- 2004 NYSRRC John Chave Award
 
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