Hi Roman, Here is the url for the stuff: http://alim.com/commerc/gelstar.htm they claim it outperforms petroleum based greases. It is also available in grease gun cartridges if you don't need it in 1 or 5 gallons. What I meant by "food service" is that you don't want any "moly" grease in let's say a food packing plant machinery or Pizza Hut dough mixer because inevitably it will leak out into the food. I'm surprised the environmentalists have not mandated this stuff in boat trailers/marine equipment. Personally, I'd recommend building your own mini-sub motor. Did you see the info. I included in the previous emails for the wind turbine stuff? I'm a wind turbine nut and have compiled a few books on making my own turbine. If you're interested, I could drop you my idea on what would be too cool for building one of these. I'm uncertain what size vehicle you are building or it's charecteristics (speed/maneuverability) but you'd certainly get better performance by alot of attention to detail on the piece/parts/construction of the motor, prop, and shape of vehicle. Check out the "Go-Devil" mud motors. The URL is http://www.godevil.com They have some mpegs on the site of the boats going through pure slop in the swamp with these engines. I get a kick out of watching them every time. Are you looking for a really tiny mini-sub? If not, and looking for something cheap/off-the-shelf, why not check out a trolling motor? Possibly drilling and tapping a hole for a zirc and then backfilling it with the dielectric grease would give you a greater depth out of it (but probably lower performance)? I have no idea of the internal construction of a trolling motor and still, personally, would want to build my own for performance. regards, Mike ----- Original Message ----- From: "Roman Black" To: Sent: Thursday, August 02, 2001 2:50 PM Subject: Re: [OT]: Underwater robots > Mike Kendall wrote: > > > > > That is one of the cleverest ideas yet, especially > > > if filled with waterproof grease or the like. > > > Those fans are pretty weak but you see more and > > > more brushless fans (DC) of higher power ratings, > > > and one might be an ideal drop-in for a small sub. > > > > many/most types of grease are conductive. silicone grease is outragiously > > expensive. try a search for gelstar. I bought a gallon of this stuff for > > 20something bucks (I can't remember the exact price) while on a quest for a > > similiar product. It is a polyofelin product that is suitable as a direct > > replacement for grease in regular machinery fittings, food service, and > > dielectric applications. A kind of do-all grease that is cheap to boot. It > > is clear just like silicone grease. Before finding this I even tried making > > homemade petroleum jelly out of mineral oil and paraffin. That was a > > smashing failure. It does not have a stable temp. range as does this > > gelstar stuff. > > Mike > > > Hi Mike, so you are saying this Gelstar is cheap, > non-toxic, water resistant, etc?? How good a grease > is it, compared to some of the more expensive > super-slippery greases available? > -Roman > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.