Help needed with P60
#1
Thread Starter
My Feedback: (7)
Help needed with P60
This engine came from a friend with 4 hrs, it has not been use for about 4 to 7 years ( was in a Tamjets A4 ) it is in my Reaction now, before the maiden it was only running up to 149K, then, I reset the throttle PID loop, then all was good for 6 flights, today flight number 5 was good, came back down, did a hot fuel up and went right back out for flight number six, during this flight I noticed a bit of lack of power during a go around then, landed, taxi back, hot fueld up and went right back out for flight number 7, during the TO run I noticed the lack of speed, stopped to TO run and taxi back to the pits I checked the max rpms, I was getting only 90K with a fuel pump voltage of 1.1v at max rpms, I let it run on idle some more, about two minutes later, it quit with a low rpms massage, I try to start it and it didn't, second problem, I think the starter O ring is worn out, I can change that, I got a low rpms massage during the start sequence.
In short, it was running good and now it doesn't go to max rpms, the fuel filter was checked before flight 5.
Any suggestions?
In short, it was running good and now it doesn't go to max rpms, the fuel filter was checked before flight 5.
Any suggestions?
Last edited by CARS II; 02-23-2019 at 12:28 AM.
#4
Thread Starter
My Feedback: (7)
Sebastian, the batt was fully charged ( 5K mah for the ECU ) the fuel filter was checked before flight #5 but will check again, the pump is the main suspect here.
I noticed that the started O ring is worn out, I will start with that, it maybe rubbing with the compressor nut.
Thanks for the suggestion .
I noticed that the started O ring is worn out, I will start with that, it maybe rubbing with the compressor nut.
Thanks for the suggestion .
Last edited by CARS II; 02-22-2019 at 11:49 PM.
#10
I once had a piece of glue come loose from the baffle inside the fuel tank. It blocked the fuel line. After it caused the flameout, I realized it was not acting right when I took off.
Also, on another jet, the vent got partially plugged and the engine would not spool up to full RPM. But if staying on asphalt, I would figure that a blocked vent is probably not the problem as it was running O.K. initially. A P-60 vent is usually small I.D. If you are not on asphalt, I would check the vent.
However, the failure to start is also classic for a low/bad battery condition. I would try a different fully charged battery. What battery type are you using? You can charge NiMH's and get false peaks. But I am assuming you are using LiFe or LiPo for the ECU cause NiMH typically just can't consistently deliver the current needed for a good start.
Not sure what the PV range is on a P-60. A PV 1.1 at 90K R seems low. If a different fully charged battery gives the same result and fuel system is not blocked, then pump is probably failing. But, if the filter is located in the right place (i.e. after the pump) and pump is going bad you probably also should be seeing debris in the filter. For me, it is a good idea to carry a spare pump for turbines that have external pumps. They come in handy for testing as well as preclude a lot of delay time while waiting for UPS and back orders, etc.
Just some thoughts to eliminate a few assumptions.
Also, on another jet, the vent got partially plugged and the engine would not spool up to full RPM. But if staying on asphalt, I would figure that a blocked vent is probably not the problem as it was running O.K. initially. A P-60 vent is usually small I.D. If you are not on asphalt, I would check the vent.
However, the failure to start is also classic for a low/bad battery condition. I would try a different fully charged battery. What battery type are you using? You can charge NiMH's and get false peaks. But I am assuming you are using LiFe or LiPo for the ECU cause NiMH typically just can't consistently deliver the current needed for a good start.
Not sure what the PV range is on a P-60. A PV 1.1 at 90K R seems low. If a different fully charged battery gives the same result and fuel system is not blocked, then pump is probably failing. But, if the filter is located in the right place (i.e. after the pump) and pump is going bad you probably also should be seeing debris in the filter. For me, it is a good idea to carry a spare pump for turbines that have external pumps. They come in handy for testing as well as preclude a lot of delay time while waiting for UPS and back orders, etc.
Just some thoughts to eliminate a few assumptions.
#11
If the o ring was dragging the starter it would explode running at 160,000!
same as learn rc. Hold down select menu and power up. Hold the button and ignore release to learn rc, ignore release to calibrate temp and after a total approx 40 sec it will say release to reset system. It will wipe all stored figures back to factory.
Do a learn rc and try again
same as learn rc. Hold down select menu and power up. Hold the button and ignore release to learn rc, ignore release to calibrate temp and after a total approx 40 sec it will say release to reset system. It will wipe all stored figures back to factory.
Do a learn rc and try again
The following users liked this post:
stuff2 (01-17-2022)
#14
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stuff2 (01-17-2022)
#17
My Feedback: (176)
This could be bad electovalve,have the problem before ,and sometimes hey installed reversed this my cost a problem after some time with small turbine, with big one they don’t work right away. Just noticed on your pictures the arrows are not matching is the information correct and the fuel flow goes the right decision just checking I’m not able to follow up your fuel lines.
Last edited by sysiek; 02-23-2019 at 09:47 PM.
#18
Guys, read the post, he says pump voltage is 1.1v at 90,000, which is about right, if the rpm was limited by a really high pump figure, filter blockage might be the thing...but not on this one. He also says he cleaned/checked the filter!
Dave
Dave
#23
Thread Starter
My Feedback: (7)
I finally had time to remove the P60 from the Reaction, this is what I found, not looking good at all, I've send an email to George to advice me of the needed repairs and the bill of course.
The turbine wheel looks just fine from here, it is turning with just a light push with the finger and for the normal amouny of time it is supposed to, the O ring assembly is basically destroyed, I don't think there is an O ring in there any more, the compressor, well, it also will have to be replaced, looks like the hot fueling had nothing to do with the engine not performing to specs.
I had all the intentions to buy this engine from my friend, I supposed I bought it now, oh well, the thing is, I just brought a nearly new K80 for my Turbinator and It will be some time before this engine gets fix to fly the Reaction, I AM SOOOOOOOO, PISSSSßSSSSSSED at myself right now for letting this happen, grrrrrrrrr..........
I have to acknowledge that I didn't loose the jet because of this problem but I need another drink just about now
Last edited by CARS II; 02-28-2019 at 07:26 PM.
The following users liked this post:
stuff2 (01-17-2022)