Best Handheld IR Temp Gauge? - RC Groups
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May 17, 2006, 03:36 PM
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Best Handheld IR Temp Gauge?

I'd like to get a handheld (non-contact) temp gauge (primarily to measure the temp of motors after flight). What's the best value gauge out there? Cheapo would be OK if it works, but I don't mind spending a lot if it's for one that is significantly better than the cheapos.
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May 17, 2006, 04:28 PM
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Andy W's Avatar
I'm happy with the one I got from RadioShack, on sale for $30..
I wouldn't pay the regular $50 price, though.. wait for it to go on sale again..
May 17, 2006, 04:36 PM
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I use the DuraTrax FlashPoint Infrared Temperature Gauge. Currently $22.99 at towerhobbies. Works great for checking motor/battery temp.
May 17, 2006, 05:16 PM
A man with too many toys
From what I have seen they all work very well. If you pay more than $35 you are paying too much.
May 17, 2006, 05:45 PM
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Thanks! I'll get one of the cheapos and forget about the one that looks like a Star Trek phasor for $150 (I don't know the manufacturer).
May 17, 2006, 05:54 PM
30 RC's and counting
Bmr4life's Avatar
Originally Posted by mattweisz
I use the DuraTrax FlashPoint Infrared Temperature Gauge. Currently $22.99 at towerhobbies. Works great for checking motor/battery temp.
I got one from Tower also. Great little toy.
May 17, 2006, 07:18 PM
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I have the Duratrax also and it works pretty well. The phaser looking one is probably the Raytek. It's more precise and focused and has a cool laser to tell you where it's measuring the temp. I've seen it for about $80 at some of the online heli shops.
May 17, 2006, 08:31 PM
Registered User
Nothing wrong with the Duratrax from what I can see. I compared it to a more expensive fluke at work and found the results almost identical (within 0.2 degrees on room temperature surfaces).

The big thing that you are paying for in higher end units is the distance/spot ratio - where it is 1:1 in the duratrax - i.e. a 1" circle at 1" distance, the better units have more like a 8:1 thru a 50:1 spot ratio - i.e. 1/50" spot at 1". (hence the need for a laser to pinpoint)

Unless you are trying to measure temps while the heli is spinning, the cheapo will likely do fine for you
May 17, 2006, 11:13 PM
Registered User
Thanks again all!

What temp do you look for in the motor after a flight? I've heard that micros should be 120 to 140 degrees F. Minis (including Trex) should be more towards 110 degrees F. And larger birds should be at around 100 degrees F.
May 18, 2006, 04:18 AM
Registered User
Depends on the motor. Some motors run hotter than others and have different heat tolerances.

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