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04-26-2020, 02:51 PM
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Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
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Engine Pre-heater
So now that winter is over thought I?d give you a little feedback on the Twin Hornet 22 Preheater. Worked great. Simple. Just shove it in your oil door and put a couple blankets over the cowl. I was seeing consistent 65 degree engine temps at start up in 30-40 degree outside air temps.
https://photos.app.goo.gl/nTjCH4i8z9VBLXjX9
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Steve Morrow
RV-12 N12SM
Builder 121036
White Salmon, WA
2020 Donation Paid
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04-26-2020, 05:14 PM
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Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 829
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as opposed to the 80 degrees I usually see with a sump heater...
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04-26-2020, 05:54 PM
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Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
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Sure. But it was a cheaper, didn't have to install it, and it heats the whole engine compartment. Not a contest here, just saying - it's simple.
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Steve Morrow
RV-12 N12SM
Builder 121036
White Salmon, WA
2020 Donation Paid
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04-27-2020, 04:30 PM
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Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 829
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A sump heater is 1/2 the price of a TwinHornet 22, it installs in an hour, and is always attached and ready to go. They also heat the entire engine compartment.
https://www.aircraftspruce.com/catal...s/ezHeater.php
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04-27-2020, 04:41 PM
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Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
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Yea, but can you through it your other airplane, or into your cockpit onto you seat? So there. Your move. LOL
__________________
Steve Morrow
RV-12 N12SM
Builder 121036
White Salmon, WA
2020 Donation Paid
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04-27-2020, 05:07 PM
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Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 829
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Most sump heaters have a built-in auto-land function...
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04-27-2020, 06:35 PM
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Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
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That?s it. You win my friend. 
__________________
Steve Morrow
RV-12 N12SM
Builder 121036
White Salmon, WA
2020 Donation Paid
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04-27-2020, 07:53 PM
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Join Date: Jan 2005
Posts: 269
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I have to agree with Tacco, I have made units similar with a built in Thermostat, the Beauty is that you heat the whole engine with no cold spots. When you heat the oil with a pan heater the Moisture in the oil Creates condensation on any of the cold parts which include the case the cam and parts of the crank. I believe this is a better way to heat your engine!
FYI you should cover your prop with some form Of insulation to keep the prop acting as a heat sink.
__________________
Adam Silverstein
Technical Counselor Chapter 643
Flying RV-8 10/30/07
PAID 2021
Pittstown, New Jersey
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04-28-2020, 01:46 PM
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Join Date: May 2005
Location: Boston, MA
Posts: 452
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Quote:
Originally Posted by Tacco
So now that winter is over thought I?d give you a little feedback on the Twin Hornet 22 Preheater. Worked great. Simple. Just shove it in your oil door and put a couple blankets over the cowl. I was seeing consistent 65 degree engine temps at start up in 30-40 degree outside air temps.
https://photos.app.goo.gl/nTjCH4i8z9VBLXjX9
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Looks nice and simple. Did you try it in cooler temps (like 10-20F?). Was your plane in a hangar?
Thanks for sharing.
__________________
Brian J.
Boston, MA
RV8 Based at ORH - Purchased
RV8 - The Project #83313 - Under Construction
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04-28-2020, 01:50 PM
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Join Date: May 2005
Location: Boston, MA
Posts: 452
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Quote:
Originally Posted by pa38112
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These also work well and are 1/2 the price of EZ heater pads.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
__________________
Brian J.
Boston, MA
RV8 Based at ORH - Purchased
RV8 - The Project #83313 - Under Construction
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