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Old 06-03-2007, 12:54 PM   #1
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Racers!!... Best temp gun?

I'm using a temp gun now. I take a reading... pull away and count to 5, re-check and the difference could be 10 degrees Farenheit!

As I'm running a $300 plus dollar motor I don't want to fry it because my temp gun sucks.

Any help would be greatly appreciated.
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Old 06-03-2007, 02:43 PM   #2
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there is only one best temp gun , not cheap at 250$ but it is the exergen gun !!!! the standard in pro rc racing !
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Old 06-03-2007, 03:34 PM   #3
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+/- 10 degrees isn't too bad. Just go a little on the rich side and use the temp readout as a guide. keep it under 240 and you'll be fine.
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Old 06-03-2007, 04:06 PM   #4
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I was looking for a temp gun aout a year ago. My son and several friends bought cheapos that never did live up to their expectations. I won't name names.

At the time a lot of people were talking about the Ray-Tech. Nice, but I didn't want to spend 80.00. Then I found this one at Napa, an auto parts store.



It's almost identical, but made by Performance-Tech. It was 40.00, and I took a chance. I've tested it against a number of thermometers, boiling water and even ice. All were within 5 degrees.

Well worth the money, and I can't say that about the others.
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Old 06-04-2007, 06:00 AM   #5
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the new o'donnel gun rocks, and its actually affordable,
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Old 06-04-2007, 08:18 AM   #6
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bobf24,

Any links or more info... name/model etc.
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Old 06-04-2007, 08:22 AM   #7
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Exergen DX501 Infra Red Temperature Gun. It is by far the most accurate temperature gun you can buy, and is what most of the top drivers use to measure the temperature of their engines. This temp gun is the most accurate you can get, so if you want the best, this is it PERIOD!!!


http://www.amainhobbies.com/product_...oducts_id/2246
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Old 06-04-2007, 08:45 AM   #8
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Your all wrong the best temp gun by far is the Snap-on it aint cheap but you want the best you gotta pay for it
me mate has one and its the sh!t comes in a hard case for protection



Features:
  • Pinpoint radiator core restrictions
  • Check exhaust and emission control
  • Measure catalytic converter temperatures
  • Diagnose exhaust manifolds
  • Measure tire or race track temperatures
  • Check bearing, rotor, brake and drum temperatures
  • HVAC—Use for temperature room balancing, check supply/return registers, duct work, monitor steam traps, furnace performance and use in energy audits.
  • Food Safety—Perform HaCCP temperature measurements at receiving docks, take cooking temperatures, check hot and holding temperatures, ensure storage temperatures on freezers, ovens and ranges.

Description:
Temperature range of -25 to 1100°F (-32 to 600°C). Single point Class 2 laser sighting. 30 to 1 distance-to-spot ratio. Backlit LCD display with MAX, MIN, DIF, AVG, SCAN and HOLD functions. Settable Hi-Lo alarm and adjustable emissivity. Other features include 12-point Data Logging and RTD probe jack. Includes manual, 9V battery and protective hard case. CE Conformity.
Additional Description:
These infrared thermometers safely monitor hot, hazardous, or hard-to-reach materials without contamination or damage to the surface. Simply point at target, pull the trigger, and read the temperature on the large, backlit LCD display. Applications include:
Additional Features:
  • Pinpointing radiator core restrictions
  • Checking exhaust and emission control problems
  • Measuring catalytic converter temperatures
  • Diagnosing exhaust manifolds for combustion problems
  • Measuring tire temperatures
  • Measuring race track temperatures
  • Measuring bearing, rotor, drum, or brake temperatures for potential problems
  • HVAC-Use for temperature room balancing, check supply/return registers duct work, monitor steam traps, furnace performance plus use in energy audits

Product SpecificationsStock #RTEMP60PBA NameThermometer, Infrared, EnhancedPrice** $426.40 BrandSnap-on Temperature Range-32° to 600°C (-25° to 1100°F)Temperature Display0.2°C (0.5°F)Accuracy±1% of reading or ±1°C (±2°F)Ambient Operating Range0° to 50°C (32° to 120°F)Repeatability±0.5% of reading or ±1°C (±2°F)Emissivity0.1 to 1.0 digitally adjustableResponse Time500 mSecDistance to Spot Ratio30:1Power9V Alkaline or NiCad battery
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Old 06-04-2007, 08:49 AM   #9
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Quote:
Originally Posted by eziduzit View Post
bobf24,

Any links or more info... name/model etc.
its on the o'donnel site, they only make one,
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Old 06-04-2007, 08:51 AM   #10
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You guys are silly, a little saliva on the head is always accurate. Besides, we all know how to tune a motor so who needs a temp gun?
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Old 06-04-2007, 08:53 AM   #11
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boiling point is at 100c so what is spit going to prove
Quote:
Originally Posted by kc_nitro_rc View Post
You guys are silly, a little saliva on the head is always accurate. Besides, we all know how to tune a motor so who needs a temp gun?
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Old 06-04-2007, 09:35 AM   #12
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Water boils at 212 degrees Fahrenheit. So if you spit on your head, and the spit doesnt boil, you're below 212. If it sizzles right off you're way above 212. If it boils a little you're just about right.

How many of you guys own the O'Donnell Temp Gun. When I read my temp, it reads a little high. I guess this is because it's reading the glowplug temp and not the head temp. Anyone agree? Mine temps roughly 25 degrees higher??
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Old 06-04-2007, 05:51 PM   #13
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i bought one of those odonnel temp gauges to have a smaller gun , that thing is not too bad , within 20 degrees only if you have an odonnel head otherwise its about 60 degrees off with a stock head . measuring against the exergen gun that is . i threw it in the pit box and that is where it stays . the only reason you should even need a temp gauge is to make sure your engine is staying consistent , tune with smoke and power not always by temp gun . example , i have two identical 5 port novarossi engines , one makes insane power at 175 - 180and i cant run it any leaner or it'll blow , the other one wont make near as much power in that temp range , doesnt start running good till 245 - 260 no matter what pipe what clutch , head shimming , etc. so tune to what the engine likes , not necessarily temp.
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Old 06-04-2007, 06:38 PM   #14
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i have a raytek minitemp and it works real well!
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Old 06-04-2007, 07:13 PM   #15
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Has anyone seen the Raytek MT6 or know anything about it. It seems to be middle of the road at $100 vs the $250 for the DX501.

Again, thank you one and all for your input... keep it coming!
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