RunRyder RC
WATCH
 1 page 1482 views POST REPLY
Home✈️Aircraft🚁HelicopterAlignT-REX 600N › Engine temp for TO 100 telemetry set up
12-23-2014 09:26 PM  5 years ago
Topic Vote0Post 1
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
Engine temp for TO 100 telemetry set up
Hello everyone. I have a trex 600 nitro dfc with a ys60 and hatori pipe. I just recently installed the spektrum tm1000 telemetry set up. I am wondering what engine temp ranges to stay within. I'm running a gov on the beastx with 2250 as max head speed. I am not a hard core smackdown 3d pilot but I have started learning tic tocks and inverted hovering. Hopefully going to start inverted piros soon. Anyways any helo with engine temp would greatly be appreciated!!!

Thank you.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-25-2014 12:24 AM  5 years ago
jsenicka

rrProfessor

Eagle River, WI

MyPosts All Forum Topic
I ran my OS55 and OS91HZ at 110C with my carbsmart config.
Great power, and not life shortening hot
Jim Senicka
Team Manager, GrandRC Flight Team
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-26-2014 06:34 PM  5 years ago
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

MyPosts All Forum Topic
"that depends".

Since there is no "defined" temperature probe mounting spot, everyone's temperature will be a little different.
I tried a couple of different locations for the probe and got a couple of different readings.

The best advice I can give to you is to tune the engine per your old habits and then move the probe around to see if you can find the hottest area.
Then, whatever that temperature is becomes the right temperature for you.
Once you find that position, you can tune the engine a little richer or leaner and see a relative change in performance relative to temperature.

I run the TM1000 temp probe on my YS 60SR and Hatori SAB-1 pipe.
I see around 195°F. I set that alarm on the DX9 for 220°F.
The YS seems to run richer than the OS and so it is cooler than the OS. If you run it too hot (lean), it will not gain power.

The sensor is on the backplate-side of the crackcase (no cooling air hitting the sensor) and touching the top of the exhaust header.
I secure the wire and sensor with a dab of red silicone sealer (Hi-Temp).

I also run the TM1000 on both my YS 120SR-X (Trex 700N) and my BL750MX (Trex 600E DFC).
+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-27-2014 12:43 AM  5 years ago
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
Would a picture of the temp sensor help? I'm using the head temp sensor thay wraps around the head...
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-27-2014 01:19 AM  5 years ago
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
Also I'm very much a beginner when it comes to tuning nitro motors... I've already blown one up because of it being too lean... I'm just trying to avoid having to spend another 300 bucks for a motor
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-29-2014 02:07 AM  5 years ago
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

MyPosts All Forum Topic
The wrap around temp probe is the one I am using.

But, I would not rely on this as the definitive answer to tuning your engine.

You best bet is to tune the engine using the old school techniques and then fine tune with a probe.

My guess is you were not using a gov or you made a big change on a needle.

I always use a gov for my engines and never use the throttle curve.
Then, set the needles per the factory recommendations (they will be too rich) and make slow changes - two or three clicks at a time.
+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 03:41 PM  5 years ago
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
I understand... I am using a governor now. I don't know the exact head speeds off the top of my head but I believe that the 600n dfc shouldn't go above 2250 as high head speed. Does that sound right to you? I'm just using the stock main gear
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 07:27 PM  5 years ago
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

MyPosts All Forum Topic
No wonder you blew it up.
For future reference, the gear ratio is calculated by dividing the number of teeth on the main gear by the number of teeth on the pinion gear.
EG: 170t main / 20t pinion = 8.5 - expressed as "Gear Ratio" and written as "8.5:1" or spoken as "8.5 to 1".
This is 8.5 turns of the pinion (engine) for 1 turn of the main (head).

For example:
If your engine is rated at 17000 RPM max, then you would not want to have a head speed higher than 2000 RPM (17000 / 8.5 = 2000).
If you try to run this "hypothetical" engine with a head speed of 2100, then you over-speed the engine and it wears out faster and/or blows up (2100 x 8.5 = 17,850 engine RPM).

The Gov is counting the revolutions of the engine and doing the math to figure the head speed.

My YS 60SR manual (and YS Tech Support) says the engine has a "practical RPM range of 2000 to 18,000".
Plan on the highest head speed to be 2100.

I run 1700, 1900 & 2100. Most of the time, I use 1900.

At 2250, you are running the engine around 19,100 RPM. Well over its rated redline.
You have to un-learn all the bad habits from your electric days.
+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2014 05:25 PM  5 years ago
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
well that makes a lot more sense.. I am using the governor function in the beastx. I do have a gov sensor installed and had it set up by a hobby shop. I am not sure if they set up the gear ratio in the beastx properly because it seems that per the chart I was in the 2200 head speed range but it did not run hot.. I guess I will have to get a tach gun to make sure the headspeed is running within the limits.

I am not that good at tuning nitro motors and do not want to have another issue. I may just leave the nitro portion of the hobby all together.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2014 06:52 PM  5 years ago
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

MyPosts All Forum Topic
Your problem is not really related to the nitro motor.

Your problem is more about not knowing how to set up the BeastX's gov mode.

If you do not learn the BeastX, and you continue to use the BeastX for electric, you will still have issues crop up that frustrate you.

If you get the BeastX's gov feature sorted, then you can set the head speed to a reasonable starting point (around 1900 RPM), you will not blow up the motor.

I have never used a BeastX, so I cannot offer any advice there.
+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2015 01:43 AM  5 years ago
GBaker110583

rrNovice

Chandler AZ

MyPosts All Forum Topic
I thought I had this thing all worked out... can someone please show me the optimal position where to put the head temp sensor Tha wraps around the engine? We rotated the sensor so now the sensor is on the bottom and now it's reading 30 degrees higher and hitting 200 plus even at stock settings. Head speeds are around 1900 and 2100. The ys 60 has a max operating rpm of 18000 so it's hitting the 2050 2100 area... the ir temp gun is reading 160 when I come down but it's very rich and has no power. Any help would greatly be appreciated
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2015 09:38 PM  5 years ago
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

MyPosts All Forum Topic
Sounds like you got the position right.
The problem I had with the IR gun is it seems to always read lower than the Spektrum temp probe.

200F is not a bad temperature.
On my YS 60SR I get around 195 to 200, and I set the alarm for 225.
This motor may not be fully broken in yet - and that may account for the higher temperatures.

The YS motors seem to "like" a slightly richer setting than the other motors.

But, here is the thing:
People have been using nitro motors for 100 years without temperature probes.
The reading on the probe is not what you should be tuning for at this point.
You tune for a good running motor.
If it is too rich: It is not running good. Lean it one click and fly it.
If it is too lean: It is not running good. Enrichen it one click and fly.
When you get a good running motor, then check the temp.
What ever it reads-out becomes your baseline from that point on.

Obviously, the hover needle plays into the too. But, its main function is to slightly change the fuel mix at the mid-range of the throttle opening. The high speed needle really sets the overall mixture.

Also, your fuel is a critical part of the process.
Only run a fuel with 100% pure synthetic oil - not a blend and not 100% caster oil.
And, run a fuel with at least 21% oil. There are some "Heli" fuels with oil content as low as 17%.
I run Byron's Originals Rotor Rage "Masters Blend":
30% nitro for the YS 60SR,
22% nitro for the YS 120SR-X.
Both have 21% pure synthetic oil (no caster).
+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1482 views POST REPLY
Home✈️Aircraft🚁HelicopterAlignT-REX 600N › Engine temp for TO 100 telemetry set up
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Monday, March 30 - 7:56 pm - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online