#53699, "100,000 rpm tach" Aug-09-03 07:41 AM by turbo8u
alright guys this might work.....
i was working on a friend of mines model plane and he showed me this laser that you point at the propellar and it shows you exactly what speed its goin....so i got this sick idea....
i took off my intake pipe to my turbo and started it up and revved it to see the turbine move and put the laser on it, it told me how fast it was goin, kinda like a turbo tach...if we had this we could tell exactly what out spool time was and exactly how mcuh back pressure we got or when the turbine slows down...that would be sick, a turbo tach..all the way to 100,000 rpm's. just mount the laser inside the intake pipe and wire it to a gauge
#53717, "RE: 100,000 rpm tach" In response to Reply # 8
how does it calculate the rpm's? i would think it would hafta do with the rate at which the beam is disrupted. in that case wouldn't it be affected by the number of fins or blades in whatever it's being pointed at? like if you're pointing it at the plane's propellar and it's got like 3 blades then every 3 times the beam is disrupted it's one revolution. but with the turbo there's a bunch more fins an stuff. idk maybe i'm way off on how the laser works *shrugs*. neat idea though
-marc
='95 RS 5spd Red= Matrix CAI A'pexi Turbo N1 Hanabi 8000k HID SPAL Deluxe Power Windows Nakayama GT5 17's Ractive STB GSX Calipers AEM Rotors
#53718, "RE: 100,000 rpm tach" In response to Reply # 9
It's an optical pickup. You paint a white dot on it..
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