This hlight modulator sounds great.
I cant see how it doesn't shorten the globe life though?
Would be awesome to see one in action...
eeeeeeeeexcellent.
I have wondered before why they don't do that as standard on stop lights for cars and bikes.
Would give others more time to see whats happening.
I'm very interested in this mod but am worried the fuzz would pull me over and book me for something on the flashing lights.
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02-02-2009, 09:41pm
(This post was last modified: 02-02-2009, 09:45pm by Pommie.)
Federal Motor Vehicle Standards, CFR Part 571.108 S7.9.4
S7.9.4 Motorcycle headlamp modulation system.
S7.9.4.1 A headlamp on a motorcycle may be wired to modulate either the upper beam or the lower beam from its maximum intensity to a lesser intensity, provided that:
(a) The rate of modulation shall be 240 40 cycles per minute.
(b) The headlamp shall be operated at maximum power for 50 to 70 percent of each cycle.
© The lowest intensity at any test point shall be not less than 17 percent of the maximum intensity measured at the same point.
(d) The modulator switch shall be wired in the power lead of the beam filament being modulated and not in the ground side of the circuit.
(e) Means shall be provided so that both the lower beam and upper beam remain operable in the event of a modulator failure.
(f) The system shall include a sensor mounted with the axis of its sensing element perpendicular to a horizontal plane. Headlamp modulation shall cease whenever the level of light emitted by a tungsten filament light operating at 3000 deg. Kelvin is either less than 270 lux (25 foot-candles) of direct light for upward pointing sensors or less than 60 lux (5.6 foot-candles) of reflected light for downward pointing sensors. The light is measured by a silicon cell type light meter that is located at the sensor and pointing in the same direction as the sensor. A Kodak Gray Card (Kodak R-27) is placed at ground level to simulate the road surface in testing downward pointing sensors.
(g) When tested in accordance with the test profile shown in Figure 9, the voltage drop across the modulator when the lamp is on at all test conditions for 12 volt systems and 6 volt systems shall not be greater than .45 volt. The modulator shall meet all the provisions of the standard after completion of the test profile shown in Figure 9.
(h) Means shall be provided so that both the lower and upper beam function at design voltage when the headlamp control switch is in either the lower or upper beam position when the modulator is off.
S7.9.4.2(a) Each motorcycle headlamp modulator not intended as original equipment, or its container, shall be labeled with the maximum wattage, and the minimum wattage appropriate for its use. Additionally, each such modulator shall comply with S7.9.4.1 (a) through (g) when connected to a headlamp of the maximum rated power and a headlamp of the minimum rated power, and shall provide means so that the modulated beam functions at design voltage when the modulator is off.
(b) Instructions, with a diagram, shall be provided for mounting the light sensor including location on the motorcycle, distance above the road surface, and and orientation with respect to the light.
Your testin my powers now Pete lol
In a nutshell, they're legal so long as they dont flash, and dont work when it goes dark. Theres a photo optic sensor that turns it off when ambient light level drops below a certain point. I have mine mounted under inside the screen above the instruments, wouldnt know it was there unless you looked for it
wow
Im impressed.
I want one.
Anyone know who fits them and how much for a full kit front and rear.
I reckon this is a must have for safety.
How long has your lasted Pommie?
will do much appreciated.
Stay tuned for update
:-)
Looking around now.
This is interesting...
Why use a headlight modulator?
A headlight modulator causes your high beams to "modulate" or pulse, from full bright to about 20% of power at a rate of four times a second.
..and Yes, it's legal in every state and territory in Australia.
There are two situations where a modulator comes in really handy: (A) Passing on two lane roads, and (B) alerting oncoming traffic when you need to.
(A) Riders have found that slower traffic does move over and let them past more frequently than they did pre-Kisan. There are four separate reactions to the Pathblazer: (1) Little old ladies seem to think that you're a cop and pull over instantly, anywhere. (2) Drivers who normally don't look in their mirrors are alerted by the flashing, and now see you. Some move, a few don't, but it's a net gain. (3) The same spaced-out whackos who didn't know there was anybody else on the planet still don't notice or care that you're behind them. (4) Guys in "hot" cars seem to take it as a challenge, and try to outrun you (which gets them out of the way, so that's fine...).
(B) Better than the improvement in the passing situation is the new ability to grab the attention of the oncoming doofus who's about to make a right turn, or pull out in front of you from a side road. Trucks that start pulling onto the road from the left without really looking may now think twice, and drivers who start to turn right into you will be less likely to do so as soon as you hit the modulator.
There are various opinions on modulators, ranging from "Great" to "Spawn of the Devil", but the >anti< crowd is largely composed of riders who've either never used a modulator or are afraid that using them will just annoy other drivers instead of alerting them, and lead to a more anti-biker attitude on the part of the general public. And, if we all left our modulators blinking all of the time that might well be the case. But when used sparingly, as they're intended to be used, a modulator can significantly improve your safety on a bike. When car drivers who've been involved in car/bike accidents are interviewed, they nearly always say that they just didn't see the bike. A modulator can make that happen a lot less frequently.
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