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General control line discussion => Open Forum => Topic started by: Mike Griffin on September 21, 2016, 06:39:03 PM

Title: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 21, 2016, 06:39:03 PM
This is our club member Mike GIroir flying the jet.  Speed was 144.99 mph.

http://youtu.be/mVf1B_2kPHw

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: John Park on September 22, 2016, 06:50:08 AM
I got dizzy just watching it!
Title: Re: Video flying pulse jet at New Orleans
Post by: John Rist on September 22, 2016, 08:02:29 AM
They obviously know what they are doing.  It was an instant start!!!.  Also not a sport for an old man like me - way too fast.   LL~
Title: Re: Video flying pulse jet at New Orleans
Post by: Gene O'Keefe on September 22, 2016, 08:09:52 AM
delete ( sorry Mike )
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 22, 2016, 08:25:00 AM
I think I am going to quit posting anything.....Gene the cars were well out of range of the model...

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: John Rist on September 22, 2016, 09:44:21 AM
I think I am going to quit posting anything.....Gene the cars were well out of range of the model...

Mike
Mike don't quit.  This was a great post!!   Talented people doing an amazing job!!!   #^
Title: Re: Video flying pulse jet at New Orleans
Post by: mike londke on September 22, 2016, 11:17:26 AM
Very cool, thx for sharing.
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 22, 2016, 12:02:23 PM
Why is it when people share something on here that certain people just want to find fault with anything and criticize?  I don't get it.  The man who was flying the jet is and experienced pilot and has been flying these things for years and Walter you want to question his piloting skills?   You cant even build a Thundergazer correctly and you want to criticize someone else?  How much experience do you have flying one?  

I am tired of this constant demeaning of people when they try to share something and there are people who want to find fault with anything.  Some people on here would grade a love letter from Raquel Welch for spelling errors....give me a break.

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: Pat Chewning on September 22, 2016, 02:13:53 PM
Quote
Some people on here would grade a love letter from Raquel Welch for spelling errors

That is a great line   :)
Title: Re: Video flying pulse jet at New Orleans
Post by: Tony Drago on September 22, 2016, 02:53:40 PM
Neat post Mike.
 Thank you.
Title: Re: Video flying pulse jet at New Orleans
Post by: dave siegler on September 22, 2016, 03:11:33 PM
neat post.

What fuel?  Methanol?  Do you have trouble with humidity down there?

You kept it on the ground for quite a bit.  We let go as soon as we hear the roar.

We fly a lot of jets for demos off grass, bigger wings, gear with big tires.  Only about 90 mph, but people love the noise and the quiet when they shut off.

There is a big difference in power on vs power off elevator response. 

I will have to try to get an air tank we go old school with a model T coil and a tire pump. 
Title: Re: Video flying pulse jet at New Orleans
Post by: john e. holliday on September 22, 2016, 03:25:29 PM
Hey Mike there are some in every crowd and we have to learn how to ignore them.   People say I park to close to the circle when I can.   Saves me a lot of steps with theses old knees.   A few more flights and I bet he get that jet in a groove that will add to the mph.    I remember back in the day when I was told that a stock Dyna-Jet would do 150 mph with out breathing hard.   Good video, keep them coming.  Thanks,   H^^
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 22, 2016, 04:54:39 PM
neat post.

What fuel?  Methanol?  Do you have trouble with humidity down there?

You kept it on the ground for quite a bit.  We let go as soon as we hear the roar.

We fly a lot of jets for demos off grass, bigger wings, gear with big tires.  Only about 90 mph, but people love the noise and the quiet when they shut off.

There is a big difference in power on vs power off elevator response. 

I will have to try to get an air tank we go old school with a model T coil and a tire pump. 


Dave I was doing the filming but I remember Mike (the guy flying the jet)  saying the fuel was 80%/20% and one of the components was Methanol... I don't know which percentage though since I am a spectator when it comes to these jets.

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: Tony Drago on September 22, 2016, 05:03:22 PM
Most likely.  80% Methanol.. 20% Nitro
Title: Re: Video flying pulse jet at New Orleans
Post by: dave siegler on September 22, 2016, 05:15:55 PM
Dave I was doing the filming but I remember Mike (the guy flying the jet)  saying the fuel was 80%/20% and one of the components was Methanol... I don't know which percentage though since I am a spectator when it comes to these jets.

Mike

thanks 80% methanol 20% nitro is a standard mix.  we used to run them on Coleman fuel, but the 80- 20 mix seems to be a lot less sensitive to jet size.
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 22, 2016, 06:41:02 PM
So many things wrong with that. Peoples observations/suggestions are not always insults, it shows your temperament. The insult you made to me about being a bad builder was uncalled for. I can build/fly any speed/racing plane but, coming from that background, modern stunt construction is something new for me and you're a bad ambassador to the sport for shunning a newbie like that. Do you want to be like the people you're complaining about because, you've succeeded.    



It's a Jersey thing,
MM

The only thing wrong is that I just should have considered the source.

It's a New Orleans thing.
Title: Re: Video flying pulse jet at New Orleans
Post by: skyshark58 on September 22, 2016, 07:52:07 PM
And it looks like he made a 100 point landing on the deck  #^
Title: Re: Video flying pulse jet at New Orleans
Post by: Russell Shaffer on September 22, 2016, 08:12:05 PM
The whistling noise after shutdown is new to me.  Was it still running at low power or was it something else?  Looks like fun.
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 22, 2016, 09:23:57 PM
Russell I honestly don't know.  I have never flown one of these and know very little about them.  I was filming the flight and was just trying to keep the camera on this screaming bullet.  The sound is something my ears will never forget.   

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: paw080 on September 22, 2016, 10:02:17 PM

Hi, Jets are a lot of fun; but you do need a nice venue for flying them.

I'm very impressed with the quick start. I haven't flown my Cat-Jet in

 several years. It was a bit more reluctant starting; but once it ran,

it was very easy to restart.  My best flight was 156 mph using Coleman

fuel which requires the stock fuel jet.  I used  a tailpipe probe, bypassing

the spark plug. I got lots of great help from Dale Kirn and others no longer

with us; when I first got started with jet fun.  I cannot tell from the video,

but I'm guessing the model is a Sport Jet class design which requires external

controls and standard formula fuel.  My Cat-Jet is a late 1960's speed trainer

design with an internal control system. which reduces a lot drag.

Tony
Title: Re: Video flying pulse jet at New Orleans
Post by: RC Storick on September 23, 2016, 04:16:28 AM
The whistling noise after shutdown is new to me.  Was it still running at low power or was it something else?  Looks like fun.

The whistling at the end is air passing through the reeds with no combustion. I heard Danny Banjok say he uses regular gas in his mix (don't forget the propylene oxide). I have zero experience with pulse jets so I can't offer any definite answers.
Title: Re: Video flying pulse jet at New Orleans
Post by: mike londke on September 23, 2016, 09:13:49 AM
Hi, Jets are a lot of fun; but you do need a nice venue for flying them.

I'm very impressed with the quick start. I haven't flown my Cat-Jet in

 several years. It was a bit more reluctant starting; but once it ran,

it was very easy to restart.  My best flight was 156 mph using Coleman

fuel which requires the stock fuel jet.  I used  a tailpipe probe, bypassing

the spark plug. I got lots of great help from Dale Kirn and others no longer

with us; when I first got started with jet fun.  I cannot tell from the video,

but I'm guessing the model is a Sport Jet class design which requires external

controls and standard formula fuel.  My Cat-Jet is a late 1960's speed trainer

design with an internal control system. which reduces a lot drag.

Tony
  Paw I also have a Cat-Jet my dad built in the 60's.You don't see many of them, can you post a pic of yours?
Title: Re: Video flying pulse jet at New Orleans
Post by: Bill Johnson on September 23, 2016, 09:26:57 AM
Very cool! Do you have to wear the hardhat when flying these things?
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 23, 2016, 09:30:04 AM
Bill  he had a camera mounted to the front of the hard hat to film the flight.  I think the hard hat was just a stable mount for the camera.  I am not knowledgeable about these things at all.  Everything I know about flying these things I learned at the field Wednesday from Mike who was flying it.  I think I have a few still shots I took while it was on the ground.  I will try to post them too.

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 23, 2016, 09:39:07 AM
https://youtu.be/DUsxmerj9ow

If you listen real close, you will hear my good friend Myron say he was going to watch from the other side of the fence.  He was of course kidding because he is the one who started it.

Mike
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 23, 2016, 10:03:10 AM
A still shot
Title: Re: Video flying pulse jet at New Orleans
Post by: Mike Griffin on September 23, 2016, 10:07:39 AM
https://youtu.be/z4GaREv2Tqs
Title: Re: Video flying pulse jet at New Orleans
Post by: john e. holliday on September 23, 2016, 10:22:34 AM
I wish my brother Bob was still with us so he could tell of his first experience with a pulse jet.  As I remember it was the 1970 Navy NATS and we heard the jet being fired up.  He said he wanted to go see it.  We were still in the camping area of the Naval base.  A few hours later he came back with a big grin on his face.  He said it was fantastic and wanted one.  Seems he was watching a couple guys getting ready for a flight.   One asked him if he was doing any thing, of course his reply was, no.   He was handed the air tank and told to follow them.  They got on the circle and was ready to fly.  He was told to take the air nozzle and point it into the front of the jet and press the trigger when he was told.   Yes it burped and he took off only to realize it was not running.  The third time the guy says lets start it this time.   Next thing he knew it coming around the circle.   He helped them with their other official flights and thanked them for the experience.   Even at Muncie you can tell when it is jet day.   
Title: Re: Video flying pulse jet at New Orleans
Post by: paw080 on September 25, 2016, 09:06:23 PM
  Paw I also have a Cat-Jet my dad built in the 60's.You don't see many of them, can you post a pic of yours?

hi Mike, I'll look around for some; although I don't think I have any digital pics of it.  That means I'll have

 to take some pics and figure how to post them on this forum.  D>K

Tony