10-18-2015, 04:15 PM | #1 |
Join Date: Aug 2015
Location: Houston but will ride in Llano Texas
Posts: 52
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Safe Temp of air cooled motors
I bought some stick on thermometer strips that read temperature. I believe they are for water cooled engines though and don't go to high enough temp. Does anyone know if there is a general do not exceed temp measured on the cooling fins for an air cooled motor?
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10-18-2015, 05:29 PM | #2 |
Join Date: Sep 2014
Posts: 1,920
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It's at least 450 degrees F. That was the limit for the old VW. The forced air cooled 2 stroke Rotax 503 aircraft engine is 425 measured at the base of the spark plug.
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10-19-2015, 12:26 AM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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I had no idea that air cooled engine temps could get so high!
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-19-2015, 09:43 AM | #4 |
Join Date: Sep 2014
Posts: 1,920
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I believe these engines are the same ones used in many of the 3 wheel rickshaws and mini trucks in Asia and the Middle East. No doubt they spend lots of time in grid lock traffic in hot weather and still hold up well. IMO the main potential problem is breakdown of the oil at high temps. Synthetic oil in general can withstand higher temps without breaking down.
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10-19-2015, 03:07 PM | #5 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Most of the three wheeled trucks I've researched have been CG-powered, and several of those have had an external oil cooler installed. I'm toying with the idea of an oil cooler as well.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-19-2015, 06:57 PM | #6 |
Join Date: Aug 2015
Location: Houston but will ride in Llano Texas
Posts: 52
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Looking for a
Dipstick thermometer. Seen some that are in Celsius, but I don't have a feel for Celsius might as well be Ohms or Angstroms.
If anyone finds a Dipstick thermometer please post it. |
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10-19-2015, 08:30 PM | #7 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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If you can't find a Fahrenheit thermometer, Celsius can be converted easily enough. Take whatever the Celsius number is, double it and then add thirty.
Eg. Room temperature is about 20C. 20 x 2 = 40, + 30 = 70F. Close enough.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-19-2015, 09:02 PM | #8 |
Join Date: Sep 2014
Posts: 1,920
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You can make your own from a $6 digital food thermometer from Harbor Freight.
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10-19-2015, 09:51 PM | #9 |
Join Date: Aug 2015
Location: Houston but will ride in Llano Texas
Posts: 52
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That's something I'd do. Does anyone know if any Honda XR models share same oil dipstick?
http://www.xrsonly.com/parts-categor...ure-dip-sticks |
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10-19-2015, 11:53 PM | #10 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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My guess is that an XR200 dipstick would work in a CG or CB motor.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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