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Topic Options
#216359 - 11/15/14 10:15 PM Engine preheat ?
axle Offline
Safety Pilot

Registered: 11/09/14
Posts: 41
Loc: mi
If I buy a 1968 C-172, do you think a pre-heat system like Tannis would be necessary? It would be Michigan, in a hanger.
It looked like the system is about $800.00, about how much do you think for installing it? thanks
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#216392 - 11/16/14 04:51 AM Re: Engine preheat ? [Re: axle]
Rusty Rudder Offline
Diamond Pilot

Registered: 02/26/10
Posts: 8353
Loc: Fair Haven New York
Here are some posts regarding pre-heat options from another thread...

http://www.cessna172club.com/forum/ubbthreads.php?ubb=showflat&Number=108805
_________________________
Take-off's are optional, landings are manditory


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#216397 - 11/16/14 05:23 AM Re: Engine preheat ? [Re: Rusty Rudder]
Joeman434 Offline
Diamond Pilot

Registered: 02/19/14
Posts: 6752
Loc: Ocala, Florida
When I lived up north, I took an upright Master Mechanic propane heater, cut a round hole in the top fastened a piece of stove pipe up to a "t" off that two 90 degree elbows into two short straight pipes into the cowl openings. Within a few weeks there were about 6 more like it on the field. I had to run it on low setting as it got hot quickly.
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#216404 - 11/16/14 08:14 AM Re: Engine preheat ? [Re: Joeman434]
axle Offline
Safety Pilot

Registered: 11/09/14
Posts: 41
Loc: mi
Well, thanks for the great ideas.....
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#216424 - 11/16/14 10:21 AM Re: Engine preheat ? [Re: axle]
Rusty Rudder Offline
Diamond Pilot

Registered: 02/26/10
Posts: 8353
Loc: Fair Haven New York
Sure thing. My avatar has an old pre-heater I used to use, between the shanty and the airplane. The old one was Kero fired, glad it quit, luv the propane unit I use now.

We're not allowed to leave anything plugged in at our county owned airport... Thus, the tannis would involve some wait time for me.
_________________________
Take-off's are optional, landings are manditory


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#216426 - 11/16/14 10:43 AM Re: Engine preheat ? [Re: Rusty Rudder]
Pedals2Paddles Offline
Second in Command

Registered: 10/17/14
Posts: 126
Loc: USA
I wish there was a forced air heater powerful enough to pre-heat in an outdoor tiedown that ran on the little propane cylinders. Lugging around a 20lb propane tank in the car all winter for the bigger heaters is not practical.

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#216427 - 11/16/14 11:00 AM Re: Engine preheat ? [Re: Pedals2Paddles]
35sierra Offline
New Member

Registered: 12/27/12
Posts: 10
Loc: AK49
I would suggest the reiff turbo xp. Best preheat around.

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#216429 - 11/16/14 11:18 AM Re: Engine preheat ? [Re: 35sierra]
farnk Offline
Second in Command

Registered: 01/09/12
Posts: 120
Loc: Central PA
I went with what I could afford. I slapped an oil pan heater on and after an hour, she fires right up. Yeah, yeah, there's the debate on warn oil, cool cylinders, no warm air. But it works will for me in Pennsylvania even in the single digits. I also have had the oil heater on a timer when in and out of a hangar. My airport manager got me a tie down near electric. I've also asked for parking spaces near electric while away from home and have always been accommodated. (for what it's worth)
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The Bahamas are missing! - Frank

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#216431 - 11/16/14 11:38 AM Re: Engine preheat ? [Re: 35sierra]
Shuswap Offline
Gold Pilot

Registered: 09/19/10
Posts: 1304
Loc: British Columbia
Originally Posted By: 35sierra
I would suggest the reiff turbo xp. Best preheat around.


I'd have reservations about such a narrow point of contact heating. Seems to be lots of heat applied to a pretty small area, expected to disperse. But I do see the convenience factor
_________________________
1969 172K 160HP Ram

"Try to stay in the middle of the air. Do not go near the edges of it. The edges of the air can be recognized by the appearance of ground, buildings, sea, and trees. It is much more difficult to fly there."

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#216432 - 11/16/14 11:47 AM Re: Engine preheat ? [Re: Shuswap]
Pedals2Paddles Offline
Second in Command

Registered: 10/17/14
Posts: 126
Loc: USA
Something like the reiff turbo is the probably the fastest you could do it with electricity. But it would still take 2-3 hours to bring things from 20 up to 60 degrees. Probably not going to cut it for a "heat it up while I preflight and pack the bags."

So at that point, you could buy a slower electric one, and use the money you save to buy the cellular switchbox to turn it on and off.


Edited by Pedals2Paddles (11/16/14 11:48 AM)

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#216435 - 11/16/14 12:37 PM Re: Engine preheat ? [Re: Pedals2Paddles]
Shuswap Offline
Gold Pilot

Registered: 09/19/10
Posts: 1304
Loc: British Columbia
Frank, you def don't want a heater that cycles on and off, letting the engine cool between cycles, as this will cause condensation inside the engine.

Not sure if this is what you are using, and I get the 'cost' factor, but this is a real problem if you are doing it that way and I'd be an arse not to say something.


Edited by Shuswap (11/16/14 12:38 PM)
_________________________
1969 172K 160HP Ram

"Try to stay in the middle of the air. Do not go near the edges of it. The edges of the air can be recognized by the appearance of ground, buildings, sea, and trees. It is much more difficult to fly there."

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#216494 - 11/16/14 07:03 PM Re: Engine preheat ? [Re: Shuswap]
cgiko Offline
New Member

Registered: 03/24/14
Posts: 12
Loc: Canada
If it is kept in a heated hangar, you don't need pre-heat for flights from your hangar. But what about on the road. If you stop over somewhere in the cold for a significant period of time you end up having to run the engine every once in a while to keep it warm or find an alternative means of heat, if possible.

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#216605 - 11/17/14 11:12 AM Re: Engine preheat ? [Re: 35sierra]
Onebadjudge70 Offline
Safety Pilot

Registered: 12/22/13
Posts: 82
Loc: Big Lake, AK
Originally Posted By: 35sierra
I would suggest the reiff turbo xp. Best preheat around.


I'll second that motion! Installed one on my 172 last month. Plugged in overnight with an insulated engine cover at 20 degrees the CHT's are 104 and oil temp at 126. The Turbo XP system has a thermostat on the oil pan heaters so you don't have to worry about cooking the oil. Easy to install too.
_________________________
1970 172K 180HP C/S Prop.

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#216615 - 11/17/14 11:39 AM Re: Engine preheat ? [Re: Shuswap]
farnk Offline
Second in Command

Registered: 01/09/12
Posts: 120
Loc: Central PA
Originally Posted By: Shuswap
Frank, you def don't want a heater that cycles on and off, letting the engine cool between cycles, as this will cause condensation inside the engine.

Thanks for the concern and caution. I should have been more clear; I stop at the hangar on the way home from work the night before a flight and set the timer for an hour before pre-flight time. Even in single digits, one hour does her well.
_________________________
The Bahamas are missing! - Frank

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#216662 - 11/17/14 05:36 PM Re: Engine preheat ? [Re: farnk]
Joe K Offline
Bronze Pilot

Registered: 03/18/11
Posts: 551
Loc: Maine
Originally Posted By: farnk
I went with what I could afford. I slapped an oil pan heater on and after an hour, she fires right up. Yeah, yeah, there's the debate on warn oil, cool cylinders, no warm air. But it works will for me in Pennsylvania even in the single digits. I also have had the oil heater on a timer when in and out of a hangar. My airport manager got me a tie down near electric. I've also asked for parking spaces near electric while away from home and have always been accommodated. (for what it's worth)


I did the same thing farnk. Reiff oil pan heater, unheated, uninsulated T hangar. I heat only when I am going to fly, activate by timer that I set the day before (I don't have a smart phone to call a switch box).

I plug cowl holes and cover the cowl with blankets. I keep a thermometer in the engine compartment. The thermometer records last 24 hour high/low temps, and during Dec Jan Feb I typically see 20F low to 55F high with heater on. I usually turn on the heater 4 hours prior to my pre-flight at coldest temps. The whole engine mass, cylinders and all, feel warm to the touch before I tug outside for start.

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