Afterburner question
 

I know the AMA frowns on such things, but I had a spare Tams pipe, and at the mouth of the pipe ( about 6 inches back actually ) I drilled 8 small holes and tapped in spray nozzels and then used a spare fuel pump and a 4 oz header tank. When you hit the button, whooooeeee she looks cool. In this case, with a Ram 1000 and an EGT of about 625, will this effect get in the way of thrust, or add to it ???


Terry
San Antonio

Just a guess
 

but I think your thrust will go way down just after the pipe collapses

Afterburner question
 

Terry,

Why would you jeparodize the reputation of the entire jet community by blatently doing something like this that specifically is frowned upon by the AMA and then posting about it on the internet for everyone to see? Bright....very bright!


David Reid

Afterburner question
 

Come on Terry, get real. Your just asking for trouble. Let's just follow the rules of common sense if nothing else. Don't bring that contraption to Austin and expect to fly it.

Are you serious
 

Terry

Why in the hell would you do such a thing??? This could only mean disaster for the model, the people at the flying site, the flying site, the owners of adjacent property, and all turbine modelers in the great US of A... You need to get a grip. There must be a unknown gas being emitted in San Antonio that effects would be jet modelers... you are not the first one I know of down there that seems to have a problem seeing the big picture of our great sport... You need to chill out dude!!!


See ya soon,

Dan M.

Afterburner question
 

Well Dan, at least you weren't yelling (caps on). Open up your computer and let the smoke out.

Afterburner question
 

what extra thrust are you getting when you push the button?
here in the UK we don't have chicken S**T rules that tells we shouldn't use reheat on models, this is of course if i read it right, although not knowing what a tams pipe is will probably prove me wrong, what is a tams pipe? if it's quite thin then expect it to melt or collapse like Mr_matt said in which case i agree with the others that your crazy in trying, if you are going to try this at least make the pipe thick enough.
try measuring the engine dry at max thrust and then push the button and measure it again.

i personally like the idea of a nice flame out the back, HEY if full size do it why the heck shouldn't us modelling boys and girls do it.

Afterburner question
 

Hhhhmmmmmmm!!!!!

Boy, are we not glad that you are in UK.

Regards

Ben

Afterburner question
 

Ben, did i read that correctly that you are NOT glad that i'm in the uk?
if so i'll come over and we'll sort out the jet boys from the jet MEN!
reheat is SOooooooooo cool! or should i say HOT.

if i read your wrongly and that you're pleased that i'm in the uk? WHY? are you are afraid of a flame out the back of the plane? full size fighters/bombers do it everyday and i don't see those pilots crapping themselves with a flame...

please explain, i'm confused.

Afterburner question
 

I think Matt's reply was the best reply of the year. It made the Diet Barq's root beer fly out my nose.

Afterburner question
 

Wow! Some of you need to take some Xanax!

All I saw him ask was that he hooked up this pipe and ran some fuel into it. I saw nothing to the fact that he was installing it into a plane and he acknowledges that the AMA disapproves. Sheesh!

I agree, Matt's scenario is what will eventually happen but I think you need some sort of Venturi shaped AB/exaust tube as well.... Paul?

Steve

Gentleman
 

It was a " shop experiment " ONLY. it will never leave my garage, ever. But, from a curiosity point of view, I wanted to try. Thats all.
My public execution will be next Tuesday at noon.


Terry

as far as the test itself
 

your right. As I was not willing to gamble on the plane, the test was run on my engine test stand. The pipe got mega hot, so I know the fuel was introduced to early in the gas flow, but it sure looked cool.


( maybe I should not say that , the AMA hit squad might be listening ) hehehehe.


Terry

Re: as far as the test itself
 

Well, at the present time, I only plan on using turbines in ground based applications in which case the AMA is of no concern. Surely we can feel free to discuss these topics without the worry of a communist outlash!?

Steve

Afterburner question
 

hey steve, maybe you could build a r/c shockwave truck. that would look really cool!!!!!!!!!!

Re: Re: as far as the test itself
 

Afterburner question
 

I don't know if the Sky Pipe afterburner was ever commercialized, but here's a link to an article about it...

http://www.airtoi.com/special/special.htm#special2

Click on the "Read the article now" button. This goes back to 2000 and hasn't been updated.

I'm sure there was a time when even though microturbines were being home-built, the RC community frowned on their use due to safety concerns. In time, they were shown to be safe. Thank goodness that people experimented on their own, or we might still be wishing for them. We may never see AMA sanctioned afterburners, but I wouldn't be at all surprised if we do at some point. The AMA also frowns upon the notion of autonomous flight, but I can almost guarantee that we will see our own RC planes flying around our fields autonomously with GPS control. In his editorial on the subject, President Brown asked "why would we want to do this?" since flying the planes ourselves is the fun part. Well, I'll tell you why we will do this, because it's cool and it can be done, and safely.

Just my two cents worth. Thanks.

Paul

Afterburner question
 

hey ghost rider, go to google type in"shockley shock wave truck"
check out the pics. you'll see what i mean!!

Re: Re: Re: as far as the test itself
 

Hi ghost,

It seems that some folks here are afraid of the AMA Kremlin and have some other issues as well. Then perhaps you could open up a "Hobby Turbine" area where ANYthing turbine could be posted.

Steve

Afterburner question
 

MY opinion, but this guy can do what he damn well pleases at his house or on his private property.

If he wants to mess with after burners OR STICK MARBLES UP HIS ASS That's his choice.
I suppossed when the first guy said "I THINK I'LL PUT A REAL TURBINE IN A MODEL JET" dumb asses *****ed about that too.

Go for it dude! someday AMA will allow it. We never were allowed 35lbs of thrust before either.

I like how some top jet boys that have replied to this frown upon this experiment after they themselves totaly have broken the AMA thrust to weight ratio.


BUT I GUESS THAT'S O.K. HUH?

Scott Booth

Afterburner question
 

Hi Jim,

I'm playing with things like scooters and bikes... I know folks would rather keep the WOW factor under R/C, etc. but I would rather see these things become as common as the USPS showing up at your mailbox everyday. Although I love aircraft, there aren't enough decent fields that accept this kind of thing in Soutnern California.... sooo a different approach, which still takes advantage of the WOW factor and educates people on this type of propulsion system could be good for all!

Steve

Afterburner question
 

Terry,

Good job using your own brain to come up with ideas and experiments, instead of following the sheep and the AMA gods. As Recall you never mentioned flying this experiment at an AMA field, so why all the bashing?

Those who bash without first hand knowledge of a violation show a lack of intelligence and understanding.

and as for this response....."This could only mean disaster for the model, the people at the flying site, the flying site, the owners of adjacent property, and all turbine modelers in the great US "

I had to re-read the original post Terry made, thought I might have missed something like him putting a miniature thermal-nuclear missile on board for a demo drop.

Terry, keep up the experiments, drink lots of German beer while buying the cool German toys, JetCats HK's, etc, and keep us informed about your success or failures.....please keep all marble info to yourself or find another forum for that though :-)

Mike

Thanks Scott, and Mike
 

By the way, I have been told by the AMA boys ( KGB actually ) that I am to burn at the stake. I wonder if they will start the fire with my home grown afterburner ? I only put the question here because there are a lot of people that inovate, as opposed to agrivate....i.e. Eddie Weeks. So I wanted some high level info.

Bob and Doug, and Mississippi Dave, I beg your forgiveness, and I forgot who said something to the tune of bright, real bright, but there is more to this hobbie than buying, building and flying.



Terry
San Antonio

afterburn
 

all these people whining is rather amusing you know nothing of pilot or flying sites he may be in wide open desert either way its his right to do as he pleases . I know r/c pilots that cant fly basic planes yet they have a waiver and plan to fly their turbines thats more dangerous. Remember AMA is secondary insurance anyway and every pilot in here has and will violate some AMA rule

Afterburner question
 

Tofly,

I think you hit the nail on the head. The AMA is totally secondary. While I do not necessarily agree with this guys idea to try this kind of thing in public...if he is willing to assume all liability that happens in his house, I am all for it. Personally, I think people take the AMA WAY too far and not for what it actually is. I pay my $60 a year, but if something were to happen while I was flying...I guarantee the AMA wouldnt be there to help me until my homeowners policy was exhausted and all of my resources were gone. I know a man this happened to. So for all of you that worship the "AMA gods," better go re read their policy.

Mike