Optical tach quirk
12-04-2006 | 12:24 PM
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From: Mississauga,
ON, CANADA
Optical tach quirk
I have a "minature avionics" optical tach, but theres one thing that can't figure out. you can aparently get two vastly different readings of the head speed. eg.. 1000 & something around 2000
i figure its because the strobe effect is either catching it at a half revolution or a full revolution. so how can you figure which one it is.
i figure its because the strobe effect is either catching it at a half revolution or a full revolution. so how can you figure which one it is.
12-04-2006 | 06:57 PM
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From: Nagano, JAPAN
RE: Optical tach quirk
1) For one thing, no nitro heli that I know will hover at 1000rpm head speed. This is the only time that you'll be wanting to check head speed.
2) If you check your engine spec (power range at xx rpm) and compare it with your gear ratio of your helicopter, you will find that any nitro heli is going to be in the 1,500 to 2,200rpm range
2) If you check your engine spec (power range at xx rpm) and compare it with your gear ratio of your helicopter, you will find that any nitro heli is going to be in the 1,500 to 2,200rpm range
