Chrisgoesflying
Cleared for Takeoff
If anyone has an engine dehumidifier for sale, please DM me. Could be a branded one (Engine Saver, DryBot, etc.) or a homebuilt one - as long as it is working.
This is the one I use. http://www.rbaviation.com/mojave/ I guess there isnt really a way to know if it is saving my engine but it appears to be keeping the humidity between 10% and 20%. When it gets to 20%, I cook the silica beads to dry them out. The owner, Jon is a nice guy and the unit is reasonably priced. View attachment 124633
Build one. So simple. Read through this thread on Supercub.org. I built two using parts from Anazon. Cheap, easy, and VERY effective.
Engine Dehydrator
I see them in the catalogs and don't know what to think. I built a couple to test. It's what I like to do. Turned them on at 3:00 today. I'm looking forward to seeing if they reduce the relative humidity inside the engines.www.supercub.org
I have an engine saver - bought it last year but never used - still sealed in box. will sell it for $300 if you want. I think they are $394 new at aircraft spruce.
Interesting. Another opportunity to spend some money!
What conditions would warrant use of this, and what problems would it prevent?
There is one modification I made on the Mojave unit. I took a rubber chair leg cap, I think t was 5/8" or 7/8" to slip over my breather tube. If you find the stopper that comes with the unit falls out or you break the fitting taking it out let me know and I will send you some pictures. The stopper works fine until you roll the cart with the pump - container on it away from the plane forgetting to unhook the stopper from the tube.
I gotta ask; Just how exactly do you know that?The stopper works fine until you roll the cart with the pump - container on it away from the plane forgetting to unhook the stopper from the tube.
My system sits on a cart with a heater, charger, and Switcheon unit. The hose I forgot connects under the plane on the breather tube. Since it is under the plane it is easy to forget. The new cap works well so it all worked out. The hose that connects into the oil filler tube can not fall into the engine. Jon sends 2 sizes so you can fit any size filler tube.I gotta ask; Just how exactly do you know that?
Many aluminum breather tubes have what is called a whistle hole in them so that if icing conditions were to freeze over the end of the tube, that the crankcase pressure would still have an outlet.There is one modification I made on the Mojave unit. I took a rubber chair leg cap, I think t was 5/8" or 7/8" to slip over my breather tube. If you find the stopper that comes with the unit falls out or you break the fitting taking it out let me know and I will send you some pictures. The stopper works fine until you roll the cart with the pump - container on it away from the plane forgetting to unhook the stopper from the tube.
As for the REMOVE BEFORE FLIGHT flag, the 5' long hose connected to the pump on the cart acts as a good reminder! There is no way you can leave it connected since the pump is on the cart in front of the plane.Many aluminum breather tubes have what is called a whistle hole in them so that if icing conditions were to freeze over the end of the tube, that the crankcase pressure would still have an outlet.
REMOVE BEFORE FLIGHT flag?
I am also understanding the whistle slot also breaks the possibility of creating suction on the breather tube. Kinds like a broken drinking straw...As for the REMOVE BEFORE FLIGHT flag, the 5' long hose connected to the pump on the cart acts as a good reminder! There is no way you can leave it connected since the pump is on the cart in front of the plane.
I did not install a hole up on the breather tube. I cant remember why I didnt and see if you are flying in weather where it could freeze over it could be a good idea. I dont fly in crappy weather so I hope I am covered. I have never heard of one freezing over. Mine is right over my exhaust pipe and I think that will keep it warm enough.