Fwd: eddy current brake

[RABBITT_Andrew at mv8.orbeng.com.au]

a 1.8 litre 4-cylinder engine we're working on cranks at about 200 rpm 
average, but cycles between 150 and 250 rpm every 180_.

at 1000 rpm WOT, the crankshaft speed is cycling between 950 and 1060 
rpm, again every 180_.  At 4500 rpm WOT, this drops to about 40 rpm 
peak-to-peak.

so you can see why everyone is moving towards many-tooth encoders.

Andrew Rabbitt

From: (Jim Davies) jimd at vcc.bc.ca:smtp
Date: ## 12/13/96 08:04 ##


On Fri, 13 Dec 1996, Matt Sale wrote:

> 600 RPM is a typical V8 idle speed, but cranking speed may be more 
> in the 200-400 RPM range, 

FWIW, most engines have a cranking speed in the 100 to 200 rpm range,
based on my observations on 'scope readouts during tuneups, etc.

JD