ATJ Turbines
If my post hurt someone, i say sorry to them now. I only told the truth. How would you feel, if you tested four engines and four got the same problem? This is a serious problem. I just want to let the manufacturer know, they should improve their quality control in the future.
Interesting this is only your second post............... I wonder who you are !
I own an ATJ-120ti and have put it through its paces on the bench, so far 15 starts. performs well..... starts first time every time, egt seems within parameters, performs as per specs (123,000 rpm at full throttle). throttle acceleration, engine shutdown and cooling seems fine.
Chris
If my post hurt someone, i say sorry to them now. I only told the truth. How would you feel, if you tested four engines and four got the same problem? This is a serious problem. I just want to let the manufacturer know, they should improve their quality control in the future.
There is nothing wrong with Kingtech engines. We test every one of them before shipping to our customers and other than some parameter tuning, we have yet to come across a Kingtech that did not perform perfectly out of the box.
If you wish, ship these engines to us that you are having issues with and we will be happy to look them over for you.
Are you using the Flightworks fuel pump or the black pump from Kingtech?
Sorry for the interuption to ATJ Turbines, as this thread belongs to you.
Barry
Hengtong
hi have also an ATJ120ti turbine with 38 starts and 5 hours of run without problem, easy start, very quick response, it's a good product.
http://www.youtube.com/watch?v=-mp4ydWI9zM
http://www.youtube.com/watch?v=FuGCF6ejdUs
Here are the spec`s
ATJ 170Ti Turbine engine Specifications
Dimensions 尺寸: Outer Diameter 110mm; Length: 290mm
Weight é‡é‡ : 1750grams (including starter)
Nominal thrust @ 15CéœæŽ¨åŠ›: 17KG @ 123,000rpm
Idle RPM 低速轉速: 35,000
Idle thrust @ 35,000 低速éœæŽ¨åŠ›: 0.8KG
EGT 噴氣溫度範åœ: 650-750 C
Fuel Consumption 油耗: @ max rpm 520 gms/min
Fuel/ oil 使用燃料: Jet -A1 or Kerosene + 5% oil (synthetic turbine engine oil)
I am sure it will run as good as the 120!
I have ordered three of the 170(two for my F-14,and one for a customer), and they will be shipped end of this week!
So now my FEJ F-14 Tomcat will have 20 lbs more thrust!!!
Christian
Bob, All,<o></o>
<o></o>Have anyone seen a test of the 170? Would like to know if it’s as powerful as the Kingtec – the Kingtec claim 37lbs or 17kg but it actually puts out more straight out the box. It could be 37.1 but more than likely close to 40lbs.<o></o>
<o></o>So, does anyone know?<o></o>
<o></o>Thanks,<o></o>
<o></o>Mr DJ<o></o>
I have not seen any test, but i have two of the ATJ-170Ti installed in my FEJ F-14. Have only startet them, not been airborn. But on the ground, i have a LOT more power now. I used to have two ATJ-120Ti.
Have decided to put a ATJ-170Ti in my Skymaster F-5 too[sm=bananahead.gif]
I am very happy with the ATJ turbines, and will continue to use them.
Christian
Joseph and the rest of his staff welcomed us very warmly and answered my questions over the engine patiently for over one hour. He let me check out every piece of the engine, rotating assembly, compressor guide vanes, and all, but he provided me with an older version (ATJ 120, not 120ti) combustion chamber, because he didn't have one of the new engine's available at that time. Communication was difficult at times because my chinese is extremely poor and his english could use some improvements We eventually had to ask my wife, who speaks both chinese and english, to help us out for part of the conversation (this is probably one of the biggest issues one could have with ATJ).
Engine parts looked top quality and very carefully manufactured and inspected. He confirmed they run X-Ray scans of all the wheels as a routine. The combustion chamber is also made out of inconel (same as the turbine wheel) as opposed to other brands of turbines which rely on less durable steel.
Joseph is extremely competent and my average knowledge (Iam just a software engineer with a passion for airplanes and turbines) could only come up with questions that seemed trivially answered by him (just as expected).
When Ifinally asked to see a test run, he packed up the test stand (which by the way is the one you see in his videos on youtube, just search ATJturbines) and drove us to a highway out of town. We stopped on the side of the road and he fired her up right there. The engine fired up right away and displayed a solid thrust of 12+ kg. He handed me the radio and Itested some transitions - 0 to 100%, 50% for a couple seconds then 100% and 0% etc. Both the engine and the electronics performed flawlessly and, I'd say, remarkably. This is what Iwould call a real "on the road"test
On the way back Iasked some more questions, namely the availability of an FODscreen (the answer was, make one yourself, it's cheaper and works just as well - if you want I'll show you how) and the availability of a kero start option (he said it was available, for about 200 USD).
So Iconsidered it for about one month until he gave me a special price offer through e-mail and made me decide to buy it. Went back to Taipei and bought the engine. Before packing it up we fired it up (right there in his office, and that was quite scary to be honest ^.^) and, since everythign looked alright, Ipacked it up and brought it home.
Since this is my first turbine, Iwanted to clear my mind of all possible doubts and run as much testing as possible before heading back to Europe so Ibuilt a test stand, ordered a co2 extinguisher, built a board for all the electronics and fired it up by myself.
Plugging the system to a fully charged 2s LIPO the glow plug (an OS. 8) blew right away (Joseph actually told me to expect my battery would be weaker than his as he was using a big lead acid battery, but this was not the case as the lipo was well over 8v). Replaced the plug and lowered the rate to the very minimum on the ECU start programming, Iattempted a start. Increasing the plug power progressively allowed me to find the lowest setting for reliable ignition to be at about 25 (original setting was 35).
After the gas ignited properly, she spun up to pre-heating and then shut down giving me a "bad start" error. This happened 2 or 3 times then the engine actually started properly.
It then ran flawlessly just like the one Itested "on the road" so Ishut it down to straighten out the startup issues. Cooling was also perfect.
After this start there was no way to turn it back on as the gas simply would not ignite. Fearing I'd lowered the plug power too much, Iraised it, with the only result of blowing a second plug. Ieventually figured out gas was not reading the engine at all because the gas solenoid was not opening.
So I removed the solenoid from the circuit and connected the gas tank directly to the engine, driving the flow manually and the gas ignited right away (with a new plug).
The same trouble with spooling up the engine during the transition from gas to kero happened with a few failed starts. So Iincreased the "pump start"setting from "AUTO+2" to "AUTO+5" and with this change the engine spools up perfectly every time.
About the solenoid Icalled Joseph directly on his mobile and he was so kind to provide me with disassembly info and pictures to look for anything that could have gotten the valve stuck.
So Idisassembled the valve and found nothing wrong. Running a resistance test showed an open circuit and, since I was not into disassembling the tiny electronic part of the valve while it's on warranty, Ijust mailed it back to Joseph. He returned it within 2 days and said there was a problem with the internal power lead connection. These valves are the original solenoids supplied directly by Xicoy by the way.
Now that the initial issues have been straightened out, the engine seems just perfect under all points of view and Ican't wait to mount it in the airframe when Iget back to europe in April. It's gonna be aFeibao Velox XL thunderbirds scheme
Attached are the pictures Joseph sent me while I was troubleshooting the gas valve.
A video of the latest startup & test - the cone glows because it is very dark, the EGT is about 550~600 degrees.
[youtube]http://www.youtube.com/watch?v=huxTN0MnPkQ[/youtube]
After the gas ignited properly, she spun up to pre-heating and then shut down giving me a ''bad start'' error. This happened 2 or 3 times then the engine actually started properly.
It then ran flawlessly just like the one I tested ''on the road'' so I shut it down to straighten out the startup issues. Cooling was also perfect.
Did you prime the fuelsystem before you attempted to start the turbine? If not, this is normal.
Christian
After the gas ignited properly, she spun up to pre-heating and then shut down giving me a ''bad start'' error. This happened 2 or 3 times then the engine actually started properly.
It then ran flawlessly just like the one I tested ''on the road'' so I shut it down to straighten out the startup issues. Cooling was also perfect.
Did you prime the fuelsystem before you attempted to start the turbine? If not, this is normal.
Christian
Yes, as Mr Toilet says, this is normal, mine did that too, and i didn't prime
Gents,
Another brand new papa here, papa to an ATJ 170Ti. I looked at others and almost moved on one or two, but then it hit me. The name of this puppy: Ti. I like that a lot because I use to be a TI. My US Air Force Brothers and Sisters know what I’m takin’ ‘bout And that’s it, that’s all the reason why I bought this puppy. And it came in lickaddy split! It shipped on Monday from Tai- freakin’-wain (Taiwan) and here it is Wednesday and wa’la.This new addition to my family yields me 6 NIB children: ATJ 170, AMT 450, and Evo 160 (4).
- Mr DJ