VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Main > Safety
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 01-09-2022, 04:18 PM
Aviator's Avatar
Aviator Aviator is offline
 
Join Date: Mar 2006
Location: Chattanooga, TN ( Chattanooga)
Posts: 155
Default

Very innovative and ingenious bunch yall are.
But the big question is, does the forced air heaters via a cowl raise the oil temps up?
__________________
RV 10. N4371
Chattanooga, TN.
EAA # 706863.
Exempt, but donated 2022.
Reply With Quote
  #22  
Old 01-09-2022, 07:41 PM
David Z David Z is offline
 
Join Date: Aug 2010
Location: Thunder Bay Ontario
Posts: 891
Default

Quote:
Originally Posted by bforsyth View Post
This is a 900w interior car warmer, metal casing, mounted on an aluminum base. The extra lighter gauge 'flap' clips over the cowl pins to hold the heater in place. Compact size makes it easy to pack, has proven effective in Canadian winter for 10 years.
Used the exact same heater in Piper Navajos down to -30*c, one heater per engine. wrapped in engine tents, cowl plugs for extra measure. Even used it in a deHavilland Beaver one fall with an old blanket wrapped over the front. The Beaver was on floats, so not terribly cold.

If it works for the turbocharged angle valve TIO-540 and the R-985, I'm sure it's fine on an RV.
__________________
RV8
Empennage Passed Pre-close Inspection
Wings mostly done
Fuselage assembly, it's a riveting job!
83126
Dash 8 day job is financing the RV8
Donation till September 2022
Reply With Quote
  #23  
Old 01-09-2022, 08:22 PM
rocketbob's Avatar
rocketbob rocketbob is offline
 
Join Date: Jun 2006
Location: 8I3
Posts: 3,831
Default

Quote:
Originally Posted by Aviator View Post
Very innovative and ingenious bunch yall are.
But the big question is, does the forced air heaters via a cowl raise the oil temps up?
Yes. If you run it for a few hours.

https://www.amazon.com/gp/product/B074MX8VN5/

I have one of these sitting inside the cowling of my Comanche with a moving blanket laying on top.

Just checked on it.

18F OAT, 30 deg. in the hangar, oil temp reads 65.
__________________

Please don't PM me! Email only!

Bob Japundza CFII A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
Reply With Quote
  #24  
Old 01-10-2022, 04:23 AM
BH1166 BH1166 is offline
 
Join Date: Nov 2017
Location: Eatonton Georgia
Posts: 694
Default

Quote:
Originally Posted by Aviator View Post
Very innovative and ingenious bunch yall are.
But the big question is, does the forced air heaters via a cowl raise the oil temps up?
Gotta remember they take in ambient air, heat it then push. Iíve used outside and it struggles, inside my hangar I can raise temps on oil by10-15 degrees an hour.
__________________
Butch
RV6A Purchased N72TX
Reply With Quote
  #25  
Old 01-10-2022, 06:06 AM
Northernliving Northernliving is offline
 
Join Date: May 2005
Location: Boston, MA
Posts: 664
Default

Quote:
Originally Posted by MacCool View Post
Cheapest cell phone switch I could find was Switcheon at $249 for two plugs, and free cell service for one year. Subsequent years cost $4.00 per day ($50/year). No sim, just a nice app using IoT G5 or LTE with actual feed back as to whether or not the switch actually turned on. Great device, has never failed me and I use it a lot. I have the cockpit heater on the other circuit so I can turn on both devices separately or together
I use a Ting hotspot that costs $3/month, but ends up being around $9 with taxes and data during the winter months. I have my battery charger and preheater connected via cheap $5 wifi outlets and it works great. I can set it on a timer or just turn the heater and charger on/off with my iphone. Very cheap and works great.

Wifi Plugs here.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Silicone pad sump heater here. I paid $79 for it, but the price seems to have increased.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

This heater has worked great. I had the overpriced Reiff HotStrip sump heaters and it failed(burned) in the first 25 hours +/-. The folks are Reiff wouldn't honor the warranty since I wasn't the installer, so that was the end of my Reiff experience. No more business. The silicone above works much better and was a fraction of the price.
__________________
Brian J.
Boston, MA
RV8 Based at ORH - Purchased
New Superior IO-360-B1AC2 w/Hartzell Composite CS
RV8 - #83313 - Under Construction (sort of!)
Reply With Quote
  #26  
Old 01-10-2022, 06:37 AM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 3,024
Default Warming heaters

I have been using 2 heaters to warm my plane up. I keep the front electric heater that is ducted into the plenum inlets on to come on at 40 degrees so it runs most of the time. The propane torpedo heater gets turned on when I get to the hangar to fly and the inlet heater gets turned up to high. It sits under the fuselage blowing 150 degree air at the bottom of the fuselage and into the exhaust area. The cowling has a thick foil on one side, green tarp material on the other side and then a sleeping bag to help keep the heat in. (UTOOL Heavy Duty Emergency Blanket, Waterproof Insulated Tarp) It works great.

I can get my engine and cabin warm and ready to start in about 30 min at 10 degrees. I can get the plane warmed up but I have not been able to make it warm enough in the hangar to do any work. It is a metal, non insulated, air leaking poster child for a crappy winter hangar!!
Attached Thumbnails
Click image for larger version

Name:	image2.jpeg
Views:	132
Size:	106.2 KB
ID:	20777  
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Flying N376E
Reply With Quote
  #27  
Old 01-10-2022, 07:30 AM
Radioflyer Radioflyer is offline
 
Join Date: Nov 2009
Location: Boston
Posts: 224
Default

Although it is more ducting, all the ideas in this thread would be more efficient if the cowling "outlet" air was recirculated to the heater "inlet". Just saying.
Reply With Quote
  #28  
Old 01-10-2022, 07:31 AM
sailvi767 sailvi767 is offline
 
Join Date: Sep 2010
Location: Charlotte NC
Posts: 1,450
Default

I was once told by a old timer that if your oil temp is above 40 it’s best not to preheat unless you are going to apply the heat for 4 hours or more minimum depending on hangar temperature. His rationale was that most preheating causes inconsistent heat transfer in the engine and parts are at different temperature points and hence different expansion or contraction levels causing increased wear during startup not anticipate in the design of the engine. He stressed that with oil temps below 20 degrees 8 hours should be a minimum preheat time.
Thoughts?
__________________
RV-6 sold
F-1 Rocket

Last edited by sailvi767 : 01-10-2022 at 08:10 AM.
Reply With Quote
  #29  
Old 01-10-2022, 07:36 AM
Erimo's Avatar
Erimo Erimo is offline
 
Join Date: Jul 2015
Location: Marcoussis, France
Posts: 156
Default

Quote:
Originally Posted by Aviator View Post
Very innovative and ingenious bunch yall are.
But the big question is, does the forced air heaters via a cowl raise the oil temps up?
The both

But when you pre-heat via the bottom cowl, the heat rises through the cylinders and you have a better oil preheating.
__________________
Eric
RV 14A - #140252 - Flying
France
2021 Dues Paid
Reply With Quote
  #30  
Old 01-10-2022, 08:43 AM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 3,024
Default

Quote:
Originally Posted by Radioflyer View Post
Although it is more ducting, all the ideas in this thread would be more efficient if the cowling "outlet" air was recirculated to the heater "inlet". Just saying.
Unless you had well insulated ducting the heat loss would be greater in the return air line to the heater. By the time the air moves through the engine and out the bottom most of the heat has been absorbed by the engine.

For a system to pre heat the engine to an acceptable level, pumping hot air into the inlets through the plenum and having it leak out the bottom has proven a good solution for me. With my plenum, it is using the same air path used to cool my engine to heat it.
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Flying N376E
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 07:13 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.