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Temperature issues, would a gun thermometer help?

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Easy-X
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PostPosted: 23:29 - 31 Jul 2020    Post subject: Temperature issues, would a gun thermometer help? Reply with quote

I've seen a few threads lately about temp issues (real or imagined) and I wondered whether one of those infra red gun thermometers is in any way helpful as a diagnostic tool?

(I have one in my tool box. Can't say I've found anything useful to do with it...)
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WD Forte
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PostPosted: 01:05 - 01 Aug 2020    Post subject: Re: Temperature issues, would a gun thermometer help? Reply with quote

Easy-X wrote:

(I have one in my tool box. Can't say I've found anything useful to do with it...)


you people got no imagination

Point it at people and make gun noises.
if it has a switchable laser pointer like mine, shining it in peoples faces
and making buzzy/zap noises never fails to raise a smile.
Quoting Dirty Harry as you do it makes it an even more joyful experience for them.
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MCN
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PostPosted: 01:40 - 01 Aug 2020    Post subject: Reply with quote

Less intrusive than those rectal types.
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Easy-X
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PostPosted: 11:24 - 01 Aug 2020    Post subject: Reply with quote

MCN wrote:
Less intrusive than those rectal types.


I dunno what gun thermometer you have but I wouldn't want mine... inserted Shocked
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Howling Terror
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PostPosted: 14:01 - 01 Aug 2020    Post subject: Reply with quote

MCN has them all.

I strongly suspect they're perfectly lined-up on a pegboard on his garage wall.
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Polarbear
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PostPosted: 14:53 - 01 Aug 2020    Post subject: Reply with quote

I haven't found much of a use for them on a bike I must admit.

I do use one regularly for cooling system issues on boats . It's easy to tell if there is a blockage/airlock. If the water pump is not doing its job or if the raw water or skin tank is not cooling.

However these are old style diesel engines with lots of space around the components so you can be pretty sure that what temp you read is from what you are aiming at.

I can't see how with a compact modern bike engine you could be sure of what temperature you are reading because the laser is just a pointer, the sensor is no where near that accurate.

They are good fun for teasing cats though. Thumbs Up
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xX-Alex-Xx
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PostPosted: 21:05 - 01 Aug 2020    Post subject: Reply with quote

MCN wrote:
Less intrusive than those rectal types.


They’re all rectal types if you’re brave enough.
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jeffyjeff
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PostPosted: 23:36 - 01 Aug 2020    Post subject: Reply with quote

I was having some issues with rear brake drag on my R1150R. The disc would run really hot, like 160F. I was measuring with a thermocouple attachment to my multimeter. A infrared temp gun would have made getting a temp reading much quicker and less painful.
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BigTim
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PostPosted: 09:44 - 02 Aug 2020    Post subject: Reply with quote

i got infrared temp gun when we had a log burner, I've used it on bike and car for various reasons, have even used it whilst cooking. just handy to have and cheap enough.

but a thermocouple on a multimeter is better for the fiddly stuff.
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MCN
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PostPosted: 19:50 - 02 Aug 2020    Post subject: Reply with quote

They are good at measuring a general temperature of a sort of general area.

Early IR temp guns came with a range of phaphery to 'calibrate the gun to the colour of the surface measured.
Different Colours emit IR more or less.

They say that modern IR guns adjust for emissivity but im not convinced.

https://en.m.wikipedia.org/wiki/Emissivity

I don't trust them to be really effective for engine temp diagnostics.
Possibly affected by draughts caused by cooling fans too.
Measuring big things that are over 80°Centipede is not too comfy when close enough to be pointed at the bit and not everything around it.
Shoving a few thermistor probes into things is far more reliable.
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Blurredman
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PostPosted: 11:13 - 03 Aug 2020    Post subject: Re: Temperature issues, would a gun thermometer help? Reply with quote

WD Forte wrote:
Easy-X wrote:

(I have one in my tool box. Can't say I've found anything useful to do with it...)


you people got no imagination

Point it at people and make gun noises.
if it has a switchable laser pointer like mine, shining it in peoples faces
and making buzzy/zap noises never fails to raise a smile.
Quoting Dirty Harry as you do it makes it an even more joyful experience for them.



Agree- We could save half the time in the supermarket if I wasn't 'zapping' my other half with the self checkout guns. Smile
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Polarbear
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PostPosted: 12:58 - 03 Aug 2020    Post subject: Re: Temperature issues, would a gun thermometer help? Reply with quote

Blurredman wrote:



Agree- We could save half the time in the supermarket if I wasn't 'zapping' my other half with the self checkout guns. Smile


Does she roll her eyes and say to the woman next to her, 'Do they ever grow up?' Mine does Laughing
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