Nothing wrong with the Gaspar Espeill ECU provided with the Jetjoe, is there?

The funsoninc you are talking about costs $2050 in USD. That's about double a typical jetjoe. To some guys, that's the difference between having an engine or not.

Also, there are P-80 Jetcats, which have even MORE power than the funsoninc, selling brand new for $2050, too. With the Jetcat controller that is more "proven" than the Projet one, not that it matters.

Good advice from GSR, though...if you are not familiar with turbines to some degree, or willing to learn, get something other than the Jetjoe, or make sure you have good help available.

I may use the jj1400 I have as a boat ancher thats about all its good for. I have been with turbines since the beginning and I must say the jj's are the worst example of engineering I have ever seen even for China.[8D]

Others, including me, have had much better luck with that engine.
What is going on with yours?

PS...I do not DOUBT your personal experience at all.

I think a lot of what you pay for with a better engine, and a lot of the problems with these ones, is all about quality control and consistency. ONE guy's JJ is fine, the next guy's is a problem.

Manufacturing a turbine is all about tolerances, good machining practices, consistency in assembly. The motor just does not what to run. I purchased this turbine from a guy on the east coast USA. A long time home builder, he got so frustrated with it that he sold it to me for $200.00. I see why. I purchased the turbine so I could see what was going on with all this jj talk. The guy replaced the complete fuel ring CC and the shaft tunnel.
Some parts have very poor workmanship, some parts are machined nice. But I suspect the dimentional tolerances are all over the place. I have it in peaces at the moment taking a good close look at all the parts measuring and taking a look at how the parts fit together. I tried to run it when I first received it but it would not self sustane at all. Even though the compressor rotated freely. I going to mod it for auto start after I see if there is anything I can do to fix it. It may need to be balanced because the guy said the turbine wheel touched the NGV when he tried to run it.
Jim[8D]

I'm sure you will get it up and running.
Like you are finding out, SOME parts are nice, others not. Inconsistent. That's why some are having great running, and others not. But nobody can stand there and say "they won't work".

I know they work I guess its a matter of how much effort one wants to put into the motor. I do think joe should sell all his motors as kits and at something less than $600.00 for the 1400.

@easytiger
how can you say that the Typhoon engine is double the cost of the jetjoe? Concerning to the jetjoe homepage the price is 1450 us$ with all the parts that are included in the Typhoon package. So there is only a small diference but you get a proven good engine that is fine also for beginners. And if you compare it to a p80, you compare apples with bananas, I am sure you know that. ( weight size fuelconsumption...)

$600 difference. A big difference to some guys. No big deal to others.

But if you took a JJ manual start version, that would be $1000 or so. Half.


Anyway, you pays your money and you takes your chances, but the fact still remains that it's still substantially less than any other engine, except used ones.

Here is my opinion on the JJ1400:
I bought one as i couldn't afford another more expensive engine, for getting in to turbines.
I just couldn't spend 2500 dollars for getting started with the knowledge i had at the time.
It worked alright for a newbie but not anywhere close for fitting it in a plane.
After sending it for repair somewhere it seems that i need a new NGV abd a fuel manifold.
The NGV's tolerance was out of spec a lot and i dont remember stressing the engine.
Bottom line is that the engine is a real bargain for those who know well about turbines (my opinion) but
not for newcomers like me.
I am sure that if someone knows about turbines he can get a JJ1400 kit, assemble it him self and he will have a very nice and reliable engine.
Never the less buying the JetJoe JJ1400 provided me with enough knowledge to go on with confidence despite the problems i have.
I also think that the price drop on major turbine brands like P80 and the typhoon 70 is not an accident
but a result of competition .
Now i can get a Funsonic or a JetCat from inside Europe for ~1600 Euro which is not that bad if i ever need another engine.
This was just not possible a couple months ago.
Chris

I'm glade you have been able to get into the jet age feels nice ha. I dont think joe is competition for any of the manufactures. I think jj's are an ok way for some to get a turbine to play with. I would never put a jj in anything but a low cost trainer. I have seen home built turbines that I concider soso that run better than a jj. Dont get me wrong I'm not bashing Joe Joe is doing a good thing I just think people should be aware of what there getting, Joe has been very good with support, but I cant see spending $700.00+ USD for a jj its just not worth it at least to me. China has a long way to go in manufacturing.
Jim

hi guys im a new member and new owner of a jetjoe 1200mk2. i havent yet purchased any fadec stuff but i have run the turbine using some friends gear. it ran very smooth and i was very impressed with it, it reached 160k no worries without flameout. its done a total of 15mins running and 2 cycles. Does anyone know what the little orage diode things are that you get with the starter???? do they go onto the starter or sumfin.

thanks

Joombey,
Do a search on "capacitors". I think this is what you are refering to.

Electrical motor noise suppression so the starter motor will not interfere with your receiver.
Jim

And the pump motor
They may already have the capacitors on them. If they do these are extras in case you need them.

hi guys just wondering what the difference is between the semi-auto fadec and the full auto fadec for the jetjoe engines is??

Semi is manual start where you control the gas, starter motor and glow plug. ECU ramps up the kero.
Full Auto is where the ECU does it all.

You are right and especially now, why spend some bucks less on a jetjoe if you can have a brandnew FUNSONIC engine for 1375€ with 725grams at 16lbs and of course full autostart and transfer from min to max power in under 3 seconds All manufactured with good old german precision and sold and proved all over the world??? try [link=http://www.hobbydirekt.de/product_info.php?language=en&products_id=501]Funsonic[/link]. Outside europe you can reduce their price by 16% VAT

Yes, you said that already. As a matter of fact, you have said it on five different threads, too. You sure you don't work for Funsonic?

Hello to all,
I have a Jet Joe 1200 with semi auto FADEC. Mine came tested and then disassembled. I now have had over 400 minutes of run time on my Jet Joe. I am currently flying the the heck out of the plane it is on now. I have had a couple of hick-ups primarily with the combustion chamber. I then consulted JetJoe via email and then worked through them problem. Another issue is the front cover seal.(o-ring) I simply put a wrap or two of electrical tape around the front intake cover and then slid the case back on replace bolts then trim the tape with a razor blade using the case as a guide. I then use my lips to test the seal by blowing or sucking on the case/intake union if I can't pass air I have sealed. Any leak can cause significant thrust loss.

I have had previous expierence about 9 years ago when I built the Shreckling FD 3/64 and had success with an autoimously running jet engine. Building the Shreckling engine from scratch and them getting it to run was an accomplishment that has served me well with the operation of the Jet Joe or with any turbine for that matter.

Personally I feel that the engine core is solid and well manufactured but the combustion chamber (as with any turbine) are the weakest link in the engines healthy operation. I have a feeling that they are not assembled by CNC (computer numeric controlled) machine but they are hand spot welded together so some variance will exist. As well as the fuel rings which can be tempermental also. If you identify a problem with any component either the fuel ring or combustion chamber let Jet Joe know perhaps take a picture and they will more that likely send you what you need. Jet Joe has been very responsive to me.

Personally I could not afford any other engine and this engine has been a dream come true for me. We all know that there are other manufatures out there but if we can work together and we can help each other out and help the lower cost manufaturer (JJ) and help the hobby as a whole. If you cant add to this thread (Jet Joe owners thread) postitivly perhaps there are other threads about engines that never have any problems.

If any one needs help with JJ maybe I can help?

Sorry Easy Tiger,
that post was directed in general and not at you.

Sure not, but i bought a jetjoe one year ago and only had problems. The Seller told me everyhting works so fine with the new jj-1400, but nothing worked. Gladly there is ebay and i now use a funsonic engine for nearly the same price

hi there just wondering what accessories i need to get myself going. i only want to test run my engine on the bench i am getting a semi auto fadec and i already have the bullet starter what else will i need?? what batteries will i need too??


thanks joombey

Turbines are great as long as they stay together

A standard 6 cell 7.2volt sub c pack like you would use for an R/C car will be needed to run the fuel pump. Your reciever and FADEC will need a seperate stadard 4.8 volt flight pack.

So, what I am hearing here is not to get a JJ. Maby I will go with a Wren55 in my Stringray!

If it's the same as my JDE Wren manual start, the 6 cell car pack is only needed for the starter. The fuel pump runs on a 4 cell 4.8 and the Rx on whatever you use, 4 or 5 cell pack. The advantage of the semi auto start is that you don't have to carry the heavy 6 cell starter pack in the plane.