On Thursday, February 05, 2015 04:57:17 PM Dave Cole wrote: > On 2/5/2015 2:52 PM, Gene Heskett wrote: > > On Thursday, February 05, 2015 02:20:23 PM andy pugh wrote: > >> On 5 February 2015 at 19:04, Gene Heskett <[email protected]> wrote: > >>> I keep scouring the net looking for a suitable electrically controled > >>> air valve, but anything worth buying is in the $100 USD range > >> > >> Surely not? > >> http://www.ebay.com/itm/Normally-Closed-1-8-12V-DC-Inch-Plastic-Electr > >> ic-Ai r-Gas-Water-Solenoid-Valve-/131189270868 > >> > >> (100 PSI) > > > > I figured you would call my bluff :) > > > > Thats actually a good price IMO, but it would putting hours on my big > > compressor, which is sitting out under the eaves of the shop bujilding > > with a fresh tarp applied about annually. > > > > But in the 15 minutes since I posted that, I find I like the teeny air > > compressor idea even better. They are cheap. I haven't a spare smart > > trickle charger, but a $20 bill at Wallies will fix that, and I do > > have a 12 volt lawn tractor battery if it hasn't sulfated sitting for > > about 18 months. Relays and sockets are in the toolbox drawer. And > > it won't be putting megahours on my 30 gallon compressor. > > > > Now I just need to find my round tuit. ;-) > > > > Cheers, Gene > > Warning: Most of those 12 volt car tire compressors have a lifetime > measured in minutes. > > Dave And I have one under the back seat in the GMC that has been airing up my corroded rims on that 99 GMC since I bought it in 2005, 10 years ago. Works as well 3 weeks ago as it did new. And it carries about 42 psi cold.
But you are correct, way too many of them have plastic gears that WILL burn up blowing up one of those 17" tires to 42 psi from scratch. They don't have adequate head cooling, any of them. But for this use, run time at a time might be 15 seconds with a 3 minute rest time between moves when I am doing the 7/16" wrench flats on a #209 nipple for one of my BP rifles. Or sharpening a single tooth threading tool at precisely a 60 degree included angle. If I do buy another, I expect to get the best quality, highest pressure capable one on the shelf. Something with metal gears. 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> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
