If anyone still has 100W incandescent lamps. (I squirreled-away a few before they were “outlawed”...but the church talked me out of them to keep a water-line in an equipment-room from freezing.)hilltop170 wrote:.... A 100W drop light will keep an engine warm ....
Preheating
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
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GAHorn
- Posts: 21291
- Joined: Fri Apr 12, 2002 8:45 pm
Re: Preheating
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
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hilltop170
- Posts: 3485
- Joined: Sat May 06, 2006 6:05 pm
Re: Preheating
The local home improvement box store sold out of incandescent bulbs years ago for $1 per 4 bulb carton. I bought out everything they had. 
Richard Pulley
2014-2016 TIC170A Past President
1951 170A, N1715D, s/n 20158, O-300D
2023 Best Original 170A at Sault Ste. Marie
Owned from 1973 to 1984.
Bought again in 2006 after 22 years.
It's not for sale!
2014-2016 TIC170A Past President
1951 170A, N1715D, s/n 20158, O-300D
2023 Best Original 170A at Sault Ste. Marie
Owned from 1973 to 1984.
Bought again in 2006 after 22 years.
It's not for sale!
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hilltop170
- Posts: 3485
- Joined: Sat May 06, 2006 6:05 pm
Re: Preheating
I did a trial to get some actual pre-heat data using two 100W drop lights (yes George, incandescent lights) under the engine with minimal insulation of one moving blanket draped over the cowl, starting from a not-so-cold, cold-soaked condition of 45°F ambient air temp with measured 55°F cylinder head and oil temps inside an uninsulated closed T-hangar so no wind.
In 12 hours, the oil and CHT temps went from 55°F to 75°F while the ambient air temp fell to 40°F. Once the engine was started, the oil temp initially remained at 75°F indicating the oil and engine internals were heat-soaked at 75°F, a 20°F increase in 12 hours.
In 12 hours, the oil and CHT temps went from 55°F to 75°F while the ambient air temp fell to 40°F. Once the engine was started, the oil temp initially remained at 75°F indicating the oil and engine internals were heat-soaked at 75°F, a 20°F increase in 12 hours.
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Richard Pulley
2014-2016 TIC170A Past President
1951 170A, N1715D, s/n 20158, O-300D
2023 Best Original 170A at Sault Ste. Marie
Owned from 1973 to 1984.
Bought again in 2006 after 22 years.
It's not for sale!
2014-2016 TIC170A Past President
1951 170A, N1715D, s/n 20158, O-300D
2023 Best Original 170A at Sault Ste. Marie
Owned from 1973 to 1984.
Bought again in 2006 after 22 years.
It's not for sale!
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GAHorn
- Posts: 21291
- Joined: Fri Apr 12, 2002 8:45 pm
Re: Preheating
One might consider a practice of Turning your FUEL VALVE to OFF if you use heaters beneath or anything using electricity inside your engine compartment.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
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iowa
- Posts: 664
- Joined: Fri Sep 01, 2006 4:57 pm
Re: Preheating
i'm going to use the milk house heater with dryer ducting
as i prefer anything that is potentially red hot or prone to break
sitting away from my priceless airplane
https://www.youtube.com/watch?v=5b-4yn2qj-I
the bulbs are a cheap simple solution, but c o u l d destroy your airplane and hangar
it seems logical that the above method would less likely to do this if untended for a few hours
dave
as i prefer anything that is potentially red hot or prone to break
sitting away from my priceless airplane
https://www.youtube.com/watch?v=5b-4yn2qj-I
the bulbs are a cheap simple solution, but c o u l d destroy your airplane and hangar
it seems logical that the above method would less likely to do this if untended for a few hours
dave
1951 170A 1468D SN 20051
1942 L-4B 2764C USAAC 43-572 (9433)
AME #17747
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.