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Forum nameTurbo/Nitrous Tech
Topic subject100,000 rpm tach
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=53699
53699, 100,000 rpm tach
Posted by turbo8u, Aug-09-03 07:39 AM
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

whatchau guys think?
53701, RE: 100,000 rpm tach
Posted by Uberingram, Aug-09-03 07:54 AM
sounds like an entertainment thing but cool nonetheless
53706, RE: 100,000 rpm tach
Posted by Justin99RS, Aug-09-03 09:33 AM
so how fast did it spin???
53708, RE: 100,000 rpm tach
Posted by Uberingram, Aug-09-03 09:47 AM
avg 80k i think

i may be off
53709, RE: 100,000 rpm tach
Posted by turbo8u, Aug-09-03 09:59 AM
ube your quite the post whore today
53710, RE: 100,000 rpm tach
Posted by xEclipsE RaceRx, Aug-09-03 10:00 AM
Would that lil laser device restrict air flow with it being in the intake pipe?

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53712, RE: 100,000 rpm tach
Posted by turbo8u, Aug-09-03 10:26 AM
highly doubtful....its the size of a bic pen basically
53713, RE: 100,000 rpm tach
Posted by CopperEclipse96, Aug-09-03 11:17 AM
we were talking about this at the shootout in the Best Western parking lot. I would imagine that it would work. How much is one though?
53715, RE: 100,000 rpm tach
Posted by Ryan_Hes, Aug-09-03 12:23 PM
I would have fear that it'd get sucked into the turbo, well into the compressor wheel at least.....ouch.
53717, RE: 100,000 rpm tach
Posted by MCubed45, Aug-09-03 12:49 PM
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

255 is fricken short
53718, RE: 100,000 rpm tach
Posted by DarkOne, Aug-09-03 01:17 PM
It's an optical pickup. You paint a white dot on it..
53719, RE: 100,000 rpm tach
Posted by soulcontroller, Aug-09-03 01:20 PM
it would be cool, but im thinking the same thing as you ryan.

i can just hear the sound now...
53723, RE: 100,000 rpm tach
Posted by MCubed45, Aug-09-03 03:30 PM
>It's an optical pickup. You paint a white dot on it..

lol ohhhh
ok that makes sense now :thumbsup

-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

255 is fricken short