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  #31  
Old 12-03-2018, 09:33 PM
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Carlos151 Carlos151 is offline
 
Join Date: Jan 2008
Location: Lebanon, TN
Posts: 145
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Unfortunately those mobile hot spots donít work everywhere.
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TN26
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  #32  
Old 12-03-2018, 10:06 PM
scsmith scsmith is offline
 
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Location: Ashland, OR
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Quote:
Originally Posted by Plummit View Post

BTW, GSM switch boxes are available from Wafer Star for $140:
http://www.wafer-shopping.com/4g-ver...l#.WluwC3lG1EY
The only difference between these and the commercially available unit is the sticker on the box.

You will also need a couple of female plugs with pig-tails and a male plug with pigtail. These could be "borrowed" from old appliances etc. or they are available on line.

-Marc
There does not appear to be a provision in the housing for routing the plugs and wiring through the housing. Are we supposed to drill holes in the housing?
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  #33  
Old 12-04-2018, 01:48 AM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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I use a 4G-GSM-High-Amperage-Remote-Control-Relay https://www.ebay.com/itm/4G-GSM-High...o/192083520963 to operate my engine preheater.

T-Mobile has a 30 text/month stand-alone cell phone data plan for $3.00/month.

Unit reports back to my cell phone that relay is on for x amount of time. To verify, I have an electric analog alarm clock on same circuit as heater. I reset hands on the clock to 12:00 and when I get to the hanger I look at the clock and see that the heater has run for set time.

Works great...

Cell phone switch mounted on column inside hanger


Remote antenna mounted outside metal hanger building


Cell phone text message to turn on engine pre-heater w/ reply that relay turned on for 150 minutes
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 459

LSRM-A Certificate 2016
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  #34  
Old 12-04-2018, 06:39 AM
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grubbat grubbat is offline
 
Join Date: May 2012
Location: Ga
Posts: 613
Default Condensation

One of the big negatives of having a heater come on when itís cold is that if you donít fly, you could be setting up the perfection condensation atmosphere in your Lycoming. Iíve heard a story about a person who had a brand new engine and used a heater but didnít fly. The engine internally was a rust bucket after only one year. If you heat it up, you need to fly it.


Quote:
Originally Posted by Carlos151 View Post
Here's a simple and relatively inexpensive temperature controlled switch for my Reiff engine preheater that I found on Amazon for $36.99:



We've got relatively mild winters here in TN so I set it to come on when it gets colder than 35 degrees and it shuts off when the outside temperature reaches 50 degrees. Cell phone coverage is spotty at best at my hangar so a cell phone switch was out of the question. So far it seems to work well. Maximum rated load is 1100 watts so it's plenty for the Reiff "standard" system with an oil sump hot strip and four cylinder hot bands (300 watts).

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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  #35  
Old 12-04-2018, 07:43 AM
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Plummit Plummit is offline
 
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Quote:
Originally Posted by scsmith View Post
There does not appear to be a provision in the housing for routing the plugs and wiring through the housing. Are we supposed to drill holes in the housing?
No, there are holes and connectors molded into the housing of the GSM box. The pics just don't show it. It's good practice to have any circuits with 120vac protected from human touch. Since a connection has a higher chance of being faulty, it should also be enclosed to prevent fire from overheat.

-Marc
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  #36  
Old 12-04-2018, 07:58 AM
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Carlos151 Carlos151 is offline
 
Join Date: Jan 2008
Location: Lebanon, TN
Posts: 145
Thumbs up Fly regularly = no rust

Quote:
Originally Posted by grubbat View Post
If you heat it up, you need to fly it.
No worries, I fly mine at least once a week. I do agree that if you donít fly your aircraft regularly, your motor will likely turn into a rust bucket inside. The temperature regulated switch box is simply an alternative way to turn on a pre-heater if you have spotty cell coverage or no WiFi available at your hangar. Reiff has a pretty good article about leaving a heater on constantly (which this control box does not do):

http://www.reiffpreheat.com/Article-...Preheating.pdf.

Some say itís no problem, some say it is, but all agree that you should fly regularly. Same way some say to leave the oil dipstick lose for any moisture to escape and others say the moisture will leave via the crankcase breather tube.

Should you prime or should you not?
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RV-8
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TN26
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  #37  
Old 01-31-2019, 09:54 AM
jahoosafat jahoosafat is offline
 
Join Date: May 2017
Location: Washington DC
Posts: 23
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I just came across this thread after having invested $300+ in a Switchbox, dealing with their incredibly annoying and unhelpful support people because of an issue with the SIM card, and then after finally getting it working, using it maybe 2 times to turn on my heater ... one of the 2 plugs burned out and fried the cord to the heater. The Switchbox is a way over-specialized unit with apps that are super buggy. I just bought a FreedomPop hotspot ($0 for 500mb/month and free hotspot device) that gets me ATT 4G wifi plus a Kasa/TP-Link wifi power strip ($70 ... although you could probably do a single plug for even cheaper). Works better and easier than the Switchbox ever did.

Jeff
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  #38  
Old 01-31-2019, 10:19 AM
moosepileit moosepileit is offline
 
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Location: Floyds Knobs, IN
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Ad says $8/mo for 500 MB, cool find.

https://www.freedompop.com/offer/fre...SAAEgKLFfD_BwE

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  #39  
Old 01-31-2019, 12:28 PM
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airguy airguy is offline
 
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Location: Garden City, Tx
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The reviews on that device/company are pretty ugly, caution is advised.
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