I got a jet

thank you

robot797 wrote:thank you

One question?
Where is your fire extinguisher?
I've gone to a "jet" display and I did notice everytime they started the jet engine up, there was somebody nearby with a fire extinguisher (and ready to use it).

Probably for safety reasons with a crowd maybe?
Stay safe

its under the table the camera is on
and it is in case of a backfire and the tank/plane catches fire

robot797 wrote:its under the table the camera is on
and it is in case of a backfire and the tank/plane catches fire

Got it thanks!

its also just a good Idea all around

Congratulations on getting a Jet engine ! What no fire and smoke ? ! Ussually you see that stuff when running one , Maybe just a good clean run ??

It is good that you finally found what you were looking for and scored, @robot797.

Once engine is fully repaired, do you plan to put it in an aircraft? Perhaps for control line? (just a suggestion).

to be honnest I also expected more smoke
but its a little during startup and a slight haze when running (had a to rich oil mix )


and I dont have any plans for it yet
flying wont be happen
I cant see any depth
but I might put it on a bicycle

GallopingGhostler wrote:It is good that you finally found what you were looking for and scored, @robot797.

Once engine is fully repaired, do you plan to put it in an aircraft? Perhaps for control line? (just a suggestion).

I have some news
and its bad
the engine cant be repaired
lets say its a miracle it ran at all

so now I have to start looking for another jet

robot797 wrote:I have some news and its bad, the engine cant be repaired, lets say its a miracle it ran at all, so now I have to start looking for another jet

On a positive note, you experienced true turbine hands on.

What made it non-repairable?

the fuel rails are damages
the bearings are shot
the compressor wheel has bend blades
the axle has damage
the preload spring is weak
the o rings are damaged
and the turbine wheel has damage

the repair costs without the axle and turbine wheel
are 1500

so with the last 2 broken parts its a dead engine


I currently have a budget of 400 to find a replacement

robot797 wrote:the fuel rails are damaged, the bearings are shot, the compressor wheel has bend blades, the axle has damage, the preload spring is weak, the o rings are damaged, and the turbine wheel has damage. the repair costs without the axle and turbine wheel are 1500, so with the last 2 broken parts its a dead engine. I currently have a budget of 400 to find a replacement

Wow, sounds like you may have picked up an engine from a crashed plane for it to have sustained such damages.

GallopingGhostler wrote:

robot797 wrote:the fuel rails are damaged, the bearings are shot, the compressor wheel has bend blades, the axle has damage, the preload spring is weak, the o rings are damaged, and the turbine wheel has damage. the repair costs without the axle and turbine wheel are 1500, so with the last 2 broken parts its a dead engine. I currently have a budget of 400 to find a replacement

Wow, sounds like you may have picked up an engine from a crashed plane for it to have sustained such damages.

I have to agree with you.
Sounds like it took a very hard landing.

yea I guess it was a crash jet
but that is the chance I took by getting a cheap jet

Can you change it over to a V-1 engine?
Has the look almost like a V-1 engine, except the shorter exhaust pipe. (Just joking ---sorry)

So much damage that nothing can be salvaged?
The one thing I would be afraid of are the bent blades.
One blade goes and that thing is like a bomb!
Just like the full-size jet engines.

Tubine engine blade fail test

sosam117 wrote:Can you change it over to a V-1 engine?
Has the look almost like a V-1 engine, except the shorter exhaust pipe. (Just joking ---sorry)

So much damage that nothing can be salvaged?
The one thing I would be afraid of are the bent blades.
One blade goes and that thing is like a bomb!
Just like the full-size jet engines.

Tubine engine blade fail test

the case and burn chamber can be saved
the rest is trash
and I dont dare to make it run with all the defects

so now I am bidding on a few jet joe jets
but I dont think I will get one with my current budget (400 euro)

In most cases, just buying the parts to build one will cost more than purchasing a new jet engine.
That previous seller should not have even tried to sell that jet engine if it was in a crash.

It's not like a 2 stroke or 4 stroke engines where a bent crank or something else simple can be replaced.
Those jet engines are precision engines with tight tolerances.

Sorry you had to pay for someone else's mistake and recoup some of his cost of the engine.

I concur with sosam117. I seriously doubt, short of someone donating a good running engine to you or you find one in an estate sale you attend, that you'll be able to obtain one in good running condition for such a low price.

It is like me trying to buy a good running OS .30 Rotary Wankel engine for under $30 US. Bob bought one for under $100, but it was badly rusted inside, unrestorable to running condition. (Made it a display model.) It too is so finely machined that improperly run on wrong fuels or overheated can easily damage them to non-runners.

I don't mean to be negative, it is just my general assessment being an unattached observer.

With your talents shown by how you did an excellent job in setting up those runs, could see how you could also tweak a Cox Engine to be an extraordinary performer, maybe even a premium Conquest .15. And maybe a plane or land vehicle along with it, that catches everyone's attention.

Thanks for providing us a view of technology we oft don't see here.

OH I know nobody will donate a engine to me (but I wont say no to it)

I am already looking for other 2nd hand engines that have a know running time
and not a description like "it feels smooth when turned by hand"

there will be another jet

robot797 wrote:I am already looking for other 2nd hand engines that have a know running time
and not a description like "it feels smooth when turned by hand"

Been there done that. About 8 years ago (documented in this forum), bought an Internet auction K&B .20 Sportster R/C Schneurle engine with such a description. When I got It, cylinder was badly scored and chromed piston badly eroded at top, was ruined by either wrong fuel (these require standard Castor oil fuels), overheating or combination of both.

Fortunately, a Stunt Hangar forum friend mailed me 2 parts engines for the cost of postage only, which I was able to restore to running condition.

Another, a K&B .35 Stallion non-R/C engine commonly used in C/L stunt planes, looked clean described as a runner, exterior defects described as occlusion defects (air bubbles during hot aluminium poured die casting, 1950's technology).

Upon receipt and further research, discovered seller lied.

https://www.coxengineforum.com/t12115-kb-35-stallion-acquisition

Fortunately I was able to restore the engine into a runner.

I would love to give it a shot and fix the jet
but the mercury has been out of production for almost 10 years
and they are not easy to find parts for

Just come to realise, you've done quite a bit with exotic engines, was looking for a post of mine with a kit I just purchased, found:

https://www.coxengineforum.com/t16815-neckar-jagst-2-fiat-600-rotary

That was an amazing project you did with that rotary engine in a classic Italian commuting vehicle.

oh look you found my car
yea I like doeing weird stuf
I also build a mini chopper that is powered by a sachs km3


ps: you know the car is from germany right XD
and another
ps: I won a price with her on rotarystock 2023