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914werke |
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#1
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"I got blisters on me fingers" ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 10,156 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest ![]() ![]() |
how many still run the OE (& expensive!) rev limiting rotor? (IMG:style_emoticons/default/idea.gif)
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Jamie |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,037 Joined: 13-October 04 From: Georgetown,KY Member No.: 2,939 Region Association: South East States ![]() ![]() |
Point of information here! I didn't know there was such a rotor, and I assume the original on my 73 has one? How does a rotor limit RPM at a certain redline? (IMG:style_emoticons/default/WTF.gif) |
Dave_Darling |
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#3
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914 Idiot ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California ![]() ![]() |
How does a rotor limit RPM at a certain redline? Here's a photo of one: (IMG:http://www.914world.com/bbs2/uploads_offsite/cdn2.pelicanparts.com-121-1538870633.1.jpg) There is a weight mounted to a horizontal slider. A spring holds the weight in toward the center of the rotor, and centrifugal force pulls it out toward the outside. When the slide moves far enough, the metal contact on it touches the path that the spark would take, and instead shorts it to ground. (To the distributor drive shaft, actually.) This means the spark does not get sent out to a plug wire. Different weights or different springs will give you different RPMs that the spark gets shorted out. --DD |
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