jetpilot

My Feedback: (48)

Your crazy Tam! Not crazy in a bad way! good crazy. crazy about this and its very important to you. I think its important to all of us.
I can see your upset about the matter. I don't think I understand completely.
Making all this go away benefits who? everyone or just FEJ?
Sorry buddy, I wasnt trying to be rude!
Scott

Falcon 64

Something hurted Tam, not a good feeling... :-(

Wap4life

My Feedback: (3)

+1 They just don't get it

quist

My Feedback: (198)

I think Tam is upset because it makes the Jet pilots look dangerous. Whenever you start bashing in a public forum, you give anyone that hates jets more reason to hate jets. When we don't follow our guidelines it makes jet pilots look irresponsible. We are living in a time of great scrutiny, and in this forum we are our own worst enemy.

Falcon 64

A dark rainbow displayed..
It comes nothing good out of it, other than been there, done that, knowing things now we didn`t know before.
But THAT`s a good thing!

Enjoy Flying

Totally agree with you. Yep, posting pics of their workers is reaally low class.. I think the jet itself is for fun, why it makes so unrested, unhappy or even a mess. All of us should think about it,like how to improve it or how it make it better.

Falcon 64

A big +1 !

RonTins

I agree with you Scott. Critiquing a product constructive generally leads to a change or improvement later on down the road. I don't get it when people come here complaining that all this is enough. If you are tired of reading this thread, don't read it then. SIMPLE as THAT!

RCJetBazz

+1

Falcon 64

Lightyears from wanting a major Jet- manufacturer to die, which almost about half this thread is about.
You can say what you want, but our scene would be much poorer without FEJ.
And without Tam as a fellow in this forum too..

rctech2k7

My Feedback: (1)

Lots of thoughts here and I can't imagine someone finds their reason to attack including dubd in spite of what his going through. They usually step to a higher surface to be on the top and lift those on the bottom. I found infos here helpful if we are concern about the benefits in general. It's more than just precaution but to make our model aircraft better and safer. I hope that the manufacturer see this as their advantage to cope up with the loss and win the challenge by giving their client the quality and service they are looking for. By this they will win the market.

Life adversity strikes in so many ways. Maybe someone survive the model crash but needs to undergone pain caused by some people we don't expect with. It's hard but I don't want to say against to anyone as it's written "For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you." Usually for people who earned their knowledge, skills or profession and who gain their experience has a better understanding but still anyone can be carried out by their emotion. The real fighter in life with God is a stronghold stand all these. Remember this experience makes you a better person...

gunradd

My Feedback: (9)

I showed my support at Topgun for big D

sidgates

My Feedback: (2)

I am not personally involved with FEJ as a customer or as a rep but this discussion has made me rethink my own scratch build design. Have I thoroughly thought out all the design decisions from a safety standpoint??

All along I have planned to test fly my project at a remote site away from spectators with a very limited audience of help.

After reading this thread about problems with a “factory� built design I now have planed a more extensive test flight program at the remote site before I ever fly at a local model field or event.

bigbaggy

Are they still coming out with the 1/6 scale F-14? I bet there chances of flutter the 1/6 scale would be about the same as the sun rise in the east. LOL
There is allot of engineering that has to be done before these are ready for prime time.. Mine aint ready thats for sure.

invertmast

My Feedback: (23)

Good questions!

I for one and making damn sure my F14 project is testsd properly before it ever leaves the ground.

Airplanes400

My Feedback: (349)

Actually, I think the chances of flutter in an FEJ jet are much more likely than the sun rising each morning!

Falcon 64

Actually, I think the chances for NOT to flutter is the same as betting the sun to come up.
But it depends if you choose to walk the line without making the precautions needed on the model, or not.
Everything in life is a choice, this includes our hobby

dubd

Precautions were taken on a number of large HC FEJ planes and they still self destructed in the air. Come back and talk about your experience after you've built and flown a FEJ HC F-14. Perhaps you can get FEJ to itemize all the precautions that you are referring to and communicate those precautions to their customers before the next inevitable flutter related crash and subsequent thread.

Falcon 64

And which precautions was that?
You say Tomcats have downed after balancing stabs?

dubd

1.) Balance stabs
2.) Drill holes as close to servo shaft as possible in elevator arms.
3.) Reinforce all HC bulkheads with carbon fiber on both sides
4.) Open up stab and reinforce bolts that go into pivot shaft to prevent honeycomb from crushing.
5.) Reinforce elevator mounting bulkhead with aluminum to prevent honeycomb from crushing.

All of these things should be made clear in a manual (which does not exist) and new bulkheads should be sent out to every owner of a FEJ HC plane free of charge. Free touch up paint should be sent to every owner to repair stabs since they need to be cut open and reinforced.

dubd

Falcon64, you have been asking what customers can do. How about what the manufacturer can do? They design and manufacture the product and it is much easier form them to make these changes before the plane leaves their factory.

Falcon 64

I agree totally to that list, but I understand it still is a problem with flutter.
And that I refuse to believe.
So damn sure, that if someone here had the Tomcat, and I could be there when doing an "overspeed" after the "precautions" ie to your list, I would pay IT ALL if it went down. Every penny of it! Without the joy to actually own it myself.

Rush!

+infinity. It is not for us to do these things but for the factory.

Honestly.... Your fixation on flutter is @!?@@@!? See the forest from the trees. It is NOT THE ISSUE!

Dead horse...

Falcon 64

Of course...!
I mean it for those who allready has one, Rush..

bigbaggy

Falcon I am not trying to dampen your enthusiasm about balancing the stab but what about the areoelastcity of the fuselage? Once the stab flutter is taken care of what about the verticle stabs?
What is the resonant frequency of the horizontal stab once it does start to flutter? What load can the stock stab mount take before it flexes and induces its own flutter? The alum they use would not be ranked as optimum if you know what I mean. Mine was attached to a less than stout bulkhead. The wood eventually compressed and the mount itself became loose causing play and that was just sitting on the bench. I put carbon fiber plate on the backside fo the bulkhead but that only solves the problem for awhile...
Lets assume the stabs are flutter free the airplane is in a dive 60 degrees nose low 200 mph the racetrack pattern determines a rolling pull.... no ailerons... the twisting moment on the aft section is ???? Large
The fuselages were tweaked on the real ones due the the twisting moment created by the stabs..
My point... more to the equation than simple balancing. These things are probably safe in you limit them to 60 degress AOB and 2 gs and say 120 max but that is not how most will fly them....
The stabs create a rolling moment and the wings are trying to dampen it unless the model is rigged with spoilers, this isn't your typical flying stab rig..
my 2 cents