RunRyder RC
WATCH
 1 page 832 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › On Board Digital Temperature Gauge
05-22-2007 03:57 PM  13 years ago
Topic Vote0Post 1
Isaac F

rrKey Veteran

Panama Republic of Panama

MyPosts All Forum Topic
On Board Digital Temperature Gauge
Guys, I going to install one of this things in my heli.

Please help me with the following:

What temperature I have to look for to stay safe. Can you give me a safe range. Engine is Webra 52AAR

Were in the engine I have to intall the temperature sensor? What I mean, were exactly you recomend to put the loop sensor in order that it read the real temperature.

THX,

Isaac

Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-22-2007 04:24 PM  13 years ago
nivlek

rrProfessor

Norfolk England

MyPosts All Forum Topic
The sensor needs to be on the highest fin of the crankcase under the head , at 90 degrees from the exhaust port , out of the airflow from the fan . Maximum temp reading during 3D should be below 280F (absolute maximum on a hot day) . Expect anything upto 240F in the hover (on a hot day).At the end of the day , it gets dark .
SHARE  PM  EMAIL  Attn:RR  Quote
05-22-2007 04:38 PM  13 years ago
rckrzy1

rrElite Veteran

Hurst Texas

MyPosts All Forum Topic
If your running 280F your cooking your motors. I never let any of my 50's run over 250F , and even in Texas heat I like to see 240F or less.

Wildcat Fuels
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-22-2007 04:41 PM  13 years ago
Isaac F

rrKey Veteran

Panama Republic of Panama

MyPosts All Forum Topic
Nivlek, thank for the info. But just to be sure I have undertand you.
Check the pic and please let me know were to put the sensor 1 or 2

Also, check this oder pic. I undertand that 90 degree from the exaust port will be position D

THX for your help,

Isaac
Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-22-2007 04:52 PM  13 years ago
nivlek

rrProfessor

Norfolk England

MyPosts All Forum Topic
Position 2 D. Ideally you want it as tight to the engine as possible touching the underside fin on the cylinder head as well as the crankcase . At the end of the day , it gets dark .
SHARE  PM  EMAIL  Attn:RR  Quote
05-24-2007 12:01 AM  13 years ago
tchavei

rrProfessor

Portugal

MyPosts All Forum Topic
I cooked my engine at 381.2F last week

It does work pretty good between at 221F with brief moments of 266F on a hot day during hard and continious maneuvers

I can post the graph plot of that deadly flight but I'll need to create a new username as I'm not going to ruin my reputation here

Isaac: I've used those gauges. They will turn off in flight sometimes, so be carefull. I also made a nice internal voltage regulator so I could feed that gauge from the rx...its a pain to change batteries every 3 days because you forget to turn the gauge off.

Tony

--------------------
"Perfection and patience usually walk side by side..."
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-24-2007 12:46 AM  13 years ago
Isaac F

rrKey Veteran

Panama Republic of Panama

MyPosts All Forum Topic
I also made a nice internal voltage regulator so I could feed that gauge from the rx...its a pain to change batteries every 3 days because you forget to turn the gauge off.
Hey Tony, do you have a schematic of the regulator and the parts on how to conect it? I fly with four cells 4.8V

THX,

Isaac
Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-24-2007 01:09 AM  13 years ago
tchavei

rrProfessor

Portugal

MyPosts All Forum Topic
I would need to check at the work computer but you will need a LM117 (military) or LM317 reg and 2 or 3 resistors.

Here is a pic so you get the idea:

Tony

--------------------
"Perfection and patience usually walk side by side..."
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-24-2007 03:16 AM  13 years ago
Isaac F

rrKey Veteran

Panama Republic of Panama

MyPosts All Forum Topic
Hey Tony, looks very easy Ok, please check at your work for the R values.........

Another question, do that regulator get very hot or just warm?
Is there is a chance that this thing get damage in the air and make a short to the main RX Battery? You know I am curious

THX for your time and help,

Isaac
Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-24-2007 08:47 AM  13 years ago
tchavei

rrProfessor

Portugal

MyPosts All Forum Topic
I will check for the R values in a few hours

The current draw is so low (48mA on mine) that its highly unlikely to develop any heat. The reg will recieve any voltage between 3 and 30V and reg it down to 1.54V.

About shorts... well, the chance of that happen is just a little higher than having a short in your gyro or other component just because we are the ones soldering it (an industrial robot solders components better than we humans)

I'll let you know the values once I have them

Tony

--------------------
"Perfection and patience usually walk side by side..."
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-24-2007 09:44 AM  13 years ago
nivlek

rrProfessor

Norfolk England

MyPosts All Forum Topic
If your running 280F your cooking your motors.
That's your opinion , but not mine . The oil package that I use is perfectly happy at those temps as are my engines . I run 10% nitro and I choose not to spend a fortune on 30% nitro and then run the engine rich to cool it .
At the end of the day , it gets dark .
SHARE  PM  EMAIL  Attn:RR  Quote
05-24-2007 12:35 PM  13 years ago
perfesser zero

rrKey Veteran

Dublin, VA., USA

MyPosts All Forum Topic
nivlek...
Thanks for your evaluation on that one. Kind of my thoughts/feelings on this. I've been running 15% and have been asked why I don't run 30% in my engines. I don't feel it's necessary in my case. I've been able to get great power out of my engines with 15% and they run cool to the touch (five seconds on the back plate). I have tried the 30% fuel and find that it's not that much better (IMO). Once it's gone I'll just go back to the 15% I've been flying with. I'll have to qualify that with this statement though, I don't do extreme 3D flying and don't push my equipment to the extreme either.

Later...

Scott!
Tiger 50 - OS 50SX-H
Hawk Sport - OS 37SZ-H
Raptor 30 - OS 37SZ-H
JR 10X/R950S
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-24-2007 01:01 PM  13 years ago
tchavei

rrProfessor

Portugal

MyPosts All Forum Topic
Isaac:

Values for R1 are between 220 and 240 and R2 is 50 (which is achievable by soldering two 100 resitors in paralell) this will give you an output value of 1.51V (using 240 Ohms) or 1.53V (using 220 Ohms) which is the equivalent of a button battery.

here is a schematic:

Nivlek: Yep, I'm running 20% and my engine temps are like I said: 221 up to 266F during flight on a hot day.

Regards
Tony

--------------------
"Perfection and patience usually walk side by side..."
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-24-2007 02:59 PM  13 years ago
Isaac F

rrKey Veteran

Panama Republic of Panama

MyPosts All Forum Topic
Hey Tony, thx for the schematics!

Isaac

.
Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
05-24-2007 04:11 PM  13 years ago
tchavei

rrProfessor

Portugal

MyPosts All Forum Topic
Exactly

Tony

--------------------
"Perfection and patience usually walk side by side..."
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-25-2007 03:04 AM  13 years ago
ZXXflyer

rrKey Veteran

stone mountain, georgia, US

MyPosts All Forum Topic
I just installed that EXACT temp guage on my hawk last week!!

I love it because the display is a hair larger than the venom temp guage...too bad it's not a catchy flourescent green though.
I have been getting 230 degrees at hover with my .32 ABN motor and seeing never more than 270 even with a bad tuning job.

I installed the probe on the highest crank case cooling fin, the one just under the cylinder head's lowest fin. The position was inbetween A and D on your diagram.
And in position 1 on your other picture.
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 832 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › On Board Digital Temperature Gauge
Print TOPIC

 5  Topic Subscribe

Wednesday, January 20 - 1:27 am - Copyright © 2000-2021 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online