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  #1  
Old 01-05-2018, 10:59 PM
rvdave rvdave is offline
 
Join Date: Jun 2005
Posts: 272
Default Engine pre heater

Wondering if there are any pireps on this oil pre heater?





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  #2  
Old 01-06-2018, 05:25 AM
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rleffler rleffler is offline
 
Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 3,725
Default

I donít have any experience with this model.

I have a Reif heater with both a sump and cylinder bands for heat. It works as advertised and Iím very pleased with.

I think in our northern winter climates, we need more than just a sump heater.
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  #3  
Old 01-06-2018, 05:43 AM
vic syracuse vic syracuse is offline
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Join Date: May 2005
Location: Locust Grove, GA
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I've used these for years on my airplanes. With inlet covers on and a blanket over the cowling of the RV-10, the entire engine compartment will be over 70 degrees, with oil between 85-95, in about 4-5 hours.
Tuesday, when I was parked outside in 15 degree weather at KFDK for 3.5 hours, I just plugged it in with the inlet covers installed (no blanket). The oil stayed over 100 degrees and CHT's were about 90 when I started up.

Yesterday morning it was 18 here again in Atlanta and I had to go to another airport for a couple of hours. Not knowing if there was power where I was parking, I grabbed a charged Odyssey PC925, an inverter, and an extension cord. I was on the ground for about 3.5 hours again and the engine was still very nice and warm with only the inlet covers.
I measured the battery draw and it appears to be around 7 amps, so the battery is good for about 3-4 hours. Works as a nice portable setup when needed.

Vic
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  #4  
Old 01-06-2018, 06:00 AM
bobnoffs bobnoffs is offline
 
Join Date: Jul 2012
Location: n. wi
Posts: 441
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it's -23 f. as i type this so it qualifies as cold here. i will fly down to 15-20 deg. . i have a 175 watt stuck to my oil pan and 175 watt stuck to the top of my block on a jab 3300. 3-4 hrs and oil is always 100 deg and heads at least 50 deg. jabs are lousy starters even at 35 deg. but i have never had a problem with this set up. this is auto stuff and i have 20 yrs experience with stick ons on my cars and never had an issue.
i also cover my cowl with a thick ''comforter'' and plug my air intakes, i think that makes a big difference, especially for the heads. auto stick ons are maybe $25 a piece.
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  #5  
Old 01-06-2018, 07:56 AM
pa38112 pa38112 is offline
 
Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 483
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Yes, on 3 separate planes. They are fantastic. They heat the oil and that heat rises up to heat the entire engine. You can leave it on continuously, or plug it in the night before. Many people hook them up to cell or wifi activates switches.
You do need to be very careful with the proper installation. If any part of the pad is not in good contact it will burn out. All paint needs to be removed where it will go, and any casting numbers on the sump will have to be filed down smooth.
You will never regret it.
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  #6  
Old 01-06-2018, 08:21 AM
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9GT 9GT is offline
 
Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,250
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I had the first model in the picture on my RV-10 since day one. It did a good job of heating everything up. I made a cowl blanket out of two moving blankets sewn together and sewed on some straps. I also fabricated cowl air inlet plugs out of some 2" thick sponges with a soft terry cloth cover. I would always install the blanket and plugs when I put the plane away in cold weather and plug the heater into the cellphone switch. With 4 hours of heating, the cylinders were even warm.
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  #7  
Old 01-06-2018, 10:35 AM
jmooreky jmooreky is offline
 
Join Date: Apr 2015
Location: Alexandria Ky.
Posts: 17
Unhappy heater

I just received mine Monday and the directions say it has to be 70 to install.
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  #8  
Old 01-06-2018, 10:46 AM
vic syracuse vic syracuse is offline
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Join Date: May 2005
Location: Locust Grove, GA
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Default Just the sump

Just the sump needs to be at 70 degrees. So go fly it first and you are all set. They include instructions for cold weather application. It has you intermittently plugging the heater in for 5-10 seconds at a time.

Vic
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  #9  
Old 01-06-2018, 10:54 AM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 1,470
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If you are installing them in cold weather, drape the engine with blankets, install an electric heater under the blankets and leave it on long enough to get the metal up to good working temperature. Install your heater pads and then leave the engine draped and your other electric heater running for 24-48 hours.

I did this when installing our Reiff preheaters. I had lots of old bed sheets which allowed me to drape the engine so the bed sheets went right to the ground, fully tenting the engine. A thermostatically-controlled ceramic micro-furnace was more than adequate to keep the engine toasty while the epoxy cured in relatively warm (-10C) ambient temperature. Of course I had a couple of quilts over the top of the engine as well for added insulation. And don't forget to cover the prop blades as they seem to shed a lot of heat.
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  #10  
Old 01-06-2018, 10:57 AM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 1,470
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BTW Vic I like your idea of using a battery and invertor to power your sump heater. I was thinking of using a small sine wave generator but the battery idea is even better as it is silent.
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