On Friday 15 February 2019 22:08:51 Jon Elson wrote: > On 02/15/2019 04:36 PM, Gene Heskett wrote: > > He brought me a new mirror insert for the ditch side mirror > > i wiped out Monday, fit perfectly. > > > > And the solenoid air valve. Purty, chrome plated, and has a coil R > > of about 2.1 ohms, no way I can switch that much 12 volts with a > > Mesa 7i76D. So that will take a booster relay, which I have. > > You sure that isn't an AC valve?
The only way that could be efficient is if the train accessories ran on 400 hz power. It said train horns in the propaganda. And I'm not a modern train buff, so I've no idea what the train stuff runs on. For all I know, there is a different system, idependent of the traction motor setup to run everything else. > 2.1 Ohms would draw 5.7 A > at 12 V, and 69 W power dissipation. Can't possibly > tolerate that for more than a few seconds! Maybe that is > desired for an air horn valve, but it will never work for > coolant control. Maybe you can use an R-C scheme to cut > applied voltage after giving time for the valve to open. Not worth the cost of the experiment. I've even got a set of air horns, ran them on my rice burners in years past to wake up sleeping cage drivers, but they also have their own compressor, started by the horn button. Hard on the bikes battery though if you lean on it for 10 seconds. Compressor cables are about 8 ga, and hard to find a serviceable pushbutton with contacts good enough to last 10+ uses, often welding the contacts shut till you bang it again, but they do wake up the surrounding drivers who often don't pay any attention to anything less than a greyhound painted on the side of a bus, or in this country, a coal truck running at their normal weight of about 220k lbs. Some of the best drivers on the planet, they are fully aware of the limits imposed by that much weight in the rear view mirrors. Saved my butt several times while logging close to half a million on two wheels. > Jon > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
