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Cox Engine of The Month
Anyone looking for some JeteX 50 about gone
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Anyone looking for some JeteX 50 about gone
Last edited by getback on Tue Jan 24, 2017 5:48 pm; edited 1 time in total (Reason for editing : can't spell)
getback- Top Poster
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Posts : 10116
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: Anyone looking for some JeteX 50 about gone
Wheeee, at those prices I'd have more fun lighting a couple of $20 bills and watching them burn! Phfffff ! I have a bunch of Este rocket motors, that are destined to become JATO attachments for a RC or maybe FF aircraft, even those are getting rediculus expensive.
Marleysky- Top Poster
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Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: Anyone looking for some JeteX 50 about gone
I know thankfully i dont need any , You know i have thought about making a quick build c/l plane and mount one of those Estes rocket engines to it just to see what would happen Have to do it when its wet outside ! Mite set the grass, trees, woods ect. on fire !
getback- Top Poster
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Posts : 10116
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: Anyone looking for some JeteX 50 about gone
Eric, we have done just that with the Estes. Jetex barely powers a tissue model and it's a very slow controlled burn with a little hiss that exits. The Scorpion 600 does quite well but the fuel is very very expensive . The Jetex 50 powers small hand launch gliders.The problem with the Estes is that it's too powerful and short. You have approx 2-3 sec burn on a Estes and 8-15 on a Jetex with a lot less thrust. The problem with Jetex is the wick goes out before the pellet lights off. I would use a lighter and pre-heat the back of the engine prior to lighting it off which can't be done on some models due to setting the model on fire. Davis Diesel made the Jet-X which in my opinion is much more reliable and I've been fortunate to have a good stash on hand. I hope to be doing some video and experiments with it. Ken
Ken Cook- Top Poster
- Posts : 5451
Join date : 2012-03-27
Location : pennsylvania
Re: Anyone looking for some JeteX 50 about gone
Anyone seriously into the JetEx type motors should read up ( Google is your friend) on the very easy to mix and form Sugar based propellants on rocketry sites.....many many formulations, readily available chemicals and real easy to form into the "pellets" needed to fit the old motor casings
Dad and I, a long time ago in the mid 60s , made our own fuel for Estes simple rockets as we were out of range for getting the rocket motors on Taiwan as the PX system did not carry them...(I assume a hazmat reason)
Sugar formulations are very stable, not hard to concoct, and have a lower impulse/longer burn than the (typical) black powder propellants of real Estes rocket motors
We never played with JetEx motors but rather reused spent small Estes motors casings....many times for simple hand launched gliders
Dad and I, a long time ago in the mid 60s , made our own fuel for Estes simple rockets as we were out of range for getting the rocket motors on Taiwan as the PX system did not carry them...(I assume a hazmat reason)
Sugar formulations are very stable, not hard to concoct, and have a lower impulse/longer burn than the (typical) black powder propellants of real Estes rocket motors
We never played with JetEx motors but rather reused spent small Estes motors casings....many times for simple hand launched gliders
fredvon4- Top Poster
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Posts : 4001
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas
Re: Anyone looking for some JeteX 50 about gone
Sugar motors are far too powerful. My flying partner and club member belongs to the Maryland Rocket Association. I brought the Jetex to him and asked for his assistance. The bottom line was that he and those there couldn't replicate the exact formulation for Jetex. They could get it close but as for sugar type engines, they would burn too hot and would probably melt through the Jetex casing or plain explode. Jetex themselves had problems with engines. There's two types of Jetex fuel pellets, those pictured on this Ebay link and Red Dot Jetex. Red Dot Jetex fuel will burn through the aluminum Jetex 50's. The best of the best was the Rapier engines no longer produced. These lit off quickly and had very good performance and reliability. Unfortunately, the company is long gone.
Ken Cook- Top Poster
- Posts : 5451
Join date : 2012-03-27
Location : pennsylvania
Pour some sugar on me!
Whoa there Fred. That Google search puts a whole new meaning to Def Lepoard s song.
Powered sugar, stump removal chemicals and clay kitty litter......Vavooom. ROCKET Man!
Powered sugar, stump removal chemicals and clay kitty litter......Vavooom. ROCKET Man!
Marleysky- Top Poster
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Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: Anyone looking for some JeteX 50 about gone
This sounds cool through the tube.
If you could stack 8 pellets in there for RC on two 1.7g servos
should make for a great flight
1/2A Nut- Top Poster
- Posts : 3428
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: Anyone looking for some JeteX 50 about gone
Thanks Brad ! That reminds me of the days of flying the gliders and rubber power that came in the .10c bag of joy , my dad would get me a new one about once a week . lol Ken i hope you and your friends can get to do some video when the time comes for the JetX flying , sounds like a lot of fun . Glad you told me about the rocket engines as i have very little experience with them other than a couple rockets i built for my son and I . Do you think it would work with say a small swept back wing glider to shoot off the pad for a glide down of say 50-100' ?? Hers a IdEa there's more out there ..
Last edited by getback on Thu Jan 26, 2017 8:41 am; edited 1 time in total (Reason for editing : you tube)
getback- Top Poster
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Posts : 10116
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: Anyone looking for some JeteX 50 about gone
RATO.. is something I've always dreamed about with modelling; mainly using Estes-style model-rocket motors. Not only aircraft.. but in marine applications too. wherever you need a "boost"..
My rocket-engine inventory.. hope there's no significant shelf-life..
Had lot's of fun with model-rocketry.
My rocket-engine inventory.. hope there's no significant shelf-life..
Had lot's of fun with model-rocketry.
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