engine heaters

engine heaters

<HTML>I live in Tennessee.  My 172D is hangared.  Any suggestions regarding an engine heater? It does get below freezing for short periods of time here.</HTML>

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Re: engine heaters

<HTML>I put the reiff heater on my c172k. First the cylinder bands then latter added the oil pan heater - reasonable priced and easy to install. I occasionally used them overnight but more often arrive a little early and plug them in before preflight - the engine is noticeably warmer throughout, easier to start etc. after about an hour of heat - originally my c172 was a little cold blooded, didn't want to start and flooded easily so the heater made all the difference. later I had some carb work done so it starts easier and doesnt flood, but I still find the heater(s) great - sometime its 30 degrees and sometime its 20 below.Base is 5K6 right along the Illinois-Wisconsin line. Didn't put in any thermostat or timer and have never had a reason to use one. When you plug in, you can plug either or both - the plugs are piggy-back - and the wattage is low enough that it'l run from an auto inverter plugged into an auto cigarette lighter in remote areas or when it's very late or early and no elec available - like Northern Wisconsin.
Ken</HTML>

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Re: engine heaters

<HTML>looked up an old link and couldn't find them  -  found info at
www.reiffpreheat.com
Ken</HTML>

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Re: engine heaters

<HTML>I have a 1971 172 and hangared in NY. I put on the EZ-Heat system which is just a heated pad on the oil sump. This works well especially since it is hangared. They say it can be left on all the time and will heat the entire engine in 4 hours. Very easy to install and low power draw. I just go early, plug it in and in about an hour the oil is heated well.</HTML>

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Re: engine heaters

<HTML>Thanks for the info.</HTML>

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<HTML>Avoid leaving engine heaters on all the time.  They accelerate internal condensation and corrosion.  (Remember 10th grade Chemistry class?  Heat accelerates chemical reactions.)  TCM has a warning service bulletin about this.</HTML>

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Re: engine heaters

<HTML>This article excerpted from AV-Web maintenance forum:
Leave it on all the time?
There has been considerable controversy about whether or not it's a good idea to leave an electric preheating system plugged in continuously when the airplane isn't flying. Both TCM and Shell have published warnings against leaving engine-mounted electric preheaters on for more than 24 hours prior to flight. However, these cautions are really applicable primarily to single-point heaters such as oil pan heaters.

The concern of TCM and Shell is that heating the oil pan will cause moisture to evaporate from the oil sump and then condense on cool engine components such as the camshaft, crankshaft or cylinder walls, resulting in accelerated corrosion of those parts. However, if the entire engine is heated uniformly by means of a multipoint heating system, or because the engine and propeller are covered with insulated engine and prop covers, such condensation is very unlikely to occur.

In fact, using an insulated cover and a multipoint preheating system that is plugged in continuously is one of the most effective methods of eliminating internal engine corrosion, particularly if the aircraft is kept in an unheated hangar rather than outdoors. If the entire engine is maintained above the dewpoint, condensation simply cannot occur.</HTML>

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<HTML>What about accellerated chemical reaction from acid in the oil?</HTML>

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<HTML>Fred, As the article implies there is much controversy on this subject.  I would play it safe by not leaving it on all the time as George stated earlier.  I use a Red Dragon propane pre-heater and allow about 15-20mins to pre-heat.  Good luck in your search for a pre-heater.  John</HTML>

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<HTML>Thanks George and John.</HTML>

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<HTML>Fred,  Here is a link just in case your interested.   http://www.flameeng.com/Engine_preheate … ;/HTML>

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Re: engine heaters

I have a cessna 152 that is tied out. There is no electricity for all preheaters that I know of. Is there any preheater that reqires no electricity?

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Re: engine heaters

I picked up a "milKhouse" style electric heater at Menards for 18 bucks. It has a thermostat and operates at 1300 or 1500 watts. (Also has a safety device that if it gets knocked over, it turns off.) I also purchased a 6 inch duct flange that I screwed to the heater. 8 feet of flex 6' duct is attached to the flange and I place the output under the cowl at the nosewheel (keeping the heater, itself, away from the plane) A heavy blanket over the top of the engine compartment and two cowl plugs to help keep the heat in and I'm in business. A couple of hours of preheat on these 30 degree days seem to do the trick. Engine starts, oil pressure comes right up! (I'll set the heater with the duct in the baggage compartment and aim the air to the front seat while doing my preflight. It takes the chill off the air but porbably not on long enought to warm up the gyros and avionics.)

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Re: engine heaters

I Own a 1953 cessna 180 in Fairbanks, AK.  I keep the plane outside all year and love the Reiff heater.  I have heard the same discussions listed above and still only plug the aircraft in prior to flight.  With -20 to -30 temperatures through a large portion of the winter I usually plug in the night before and let it sit the night before flying it.  I check the weather pretty good though, cause there is nothing as sad as showing up after an unexpected snow shower and seeing that the snow has melted and refrozen into a beautiful cessna-cicle.

I of course am deployed in Iraq flying helicopters right now and would love to get back to the freeze.

Brett

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Re: engine heaters

gsm-auto have just produced a product for operating preheaters via a cell phone.

The gsm-auto system has 2 30 amp relays and can be controlled by a free phone call that will control 2 devices from anywhere in the world.


The link is http://www.gsm-auto.com

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Re: engine heaters

a Company called dial2Open have now built a system called GSM-AUTO for controlling preheaters via a cell phone.

With the GSM-AUTO you can just call the system from anywhere and it will fire up your preheater any time before you arrive.

The gsm-auto has no range restrictions and will work from anywhere in the world and without any call costs.

The gsm-auto link is http://www.gsm-auto.com

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Re: engine heaters

Special Offer save $20 on the GSM-AUTO http://www.gsm-auto.com/special

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