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Cox Engine of The Month
Looking for JetX Fuse
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Looking for JetX Fuse
I have been looking without any help tried some cannon fuse places W/no reply anyway i am trying to find some fuse for the 50 series jet engines , i know they pop up on Ebay with the fuel pellets but i am just looking for the fuse the fuel i can get . Thanks , Eric
Last edited by getback on Sun Apr 07, 2019 11:52 am; edited 1 time in total
getback- Top Poster
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Posts : 10439
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Looking for JetX Fuse
This is very difficult to source, the next problem is that it's probably bad. The fuse isn't like rocket fuse, it's almost like a coated wire. When flexed even slightly it either breaks or crumbles.This is true even when it's been stored in the small tins it came in. There's Jetex and also Jet-X. The fuel pellets from Jet-X are not compatible with Jetex but the fuse might work. Jet-X engines were sold as Powermax units. Keep in mind though that all Jetex pellets are not compatible with all of their engines. Red Dot Jetex pellets only work in the all steel Jetex-50. Jetex also made a Psst .50 and some all aluminum cased engines were only their latest fuel pellets worked in, if you try to use Red Dot pellets in them, they can melt and even possibly burst. Bob Davis from Davis Diesel was responsible for the Jet-X Powermax fuel and engines. He sold it in the 90's, it might be worth finding out where the stuff went. If you do find fuse, keep in mind the pellets are coated in varnish, the bottom and top need to be sanded or scraped. You sand them and save the dust which you pour back in around the coiled fuse, this assists lighting it off. In addition, using a lighter, heat the back half of the engine where the fuse enters so that when the fuse burns, it doesn't get quenched out at the exit point of the engine.
Ken Cook- Top Poster
- Posts : 5637
Join date : 2012-03-27
Location : pennsylvania
Re: Looking for JetX Fuse
https://www.amazon.com/Green-Fuse-Model-Rocketry-20ft/dp/B07DVPMT67/ref=asc_df_B07DVPMT67/?tag=hyprod-20&linkCode=df0&hvadid=312123494345&hvpos=1o1&hvnetw=g&hvrand=8338954056732056397&hvpone=&hvptwo=&hvqmt=&hvdev=t&hvdvcmdl=&hvlocint=&hvlocphy=9014991&hvtargid=pla-570832973991&psc=1
Green canon fuse. Price seems ok too... last time I bought it was at the LHS when those existed, and I lived near one.
I know nothing about actual Jet-x fuse.
Phil
Green canon fuse. Price seems ok too... last time I bought it was at the LHS when those existed, and I lived near one.
I know nothing about actual Jet-x fuse.
Phil
pkrankow- Top Poster
- Posts : 3025
Join date : 2012-10-02
Location : Ohio
Re: Looking for JetX Fuse
That fuse will probably not fit the Jetex engine. The fuse diameter of Jetex is smaller than a model pin. Any alteration to the hole and the Jetex won't work as intended. When the Jetex lights off, you can't have any residue left in the orifice. When the Jetex wick has been ignited, the wire is still left in place in which you wet the tip of your fingers and quickly yank it out.
Last edited by Ken Cook on Fri Mar 15, 2019 9:18 pm; edited 1 time in total
Ken Cook- Top Poster
- Posts : 5637
Join date : 2012-03-27
Location : pennsylvania
Re: Looking for JetX Fuse
What about model rocket ignitors? I know nothing about jetx stuff.
https://www.amazon.com/Model-Rocket-IgnitersNew-by-CC/dp/B016KAT36U/ref=sr_1_6?keywords=Estes+igniter&qid=1552702466&s=hi&sr=1-6-catcorr
https://www.amazon.com/Model-Rocket-IgnitersNew-by-CC/dp/B016KAT36U/ref=sr_1_6?keywords=Estes+igniter&qid=1552702466&s=hi&sr=1-6-catcorr
Jason_WI- Top Poster
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Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Looking for JetX Fuse
Jason, I thought of that myself. The problem is the diameter of the hole and the electric ignitors would have their leads touching one another shorting against the metal case. This has been a long ongoing problem with Jetex users the wick and fuel. There was a fellow who made a special ignitor which looked similar to a hand held barb-q lighter. You might be able to find some info here http://archivesite.jetex.org/ The ignitor I mentioned is for Rapier engines which were Czechoslovakian, I believe there were those that adapted this for Jetex use. Rapier engines were great, I had a few but they were difficult to source. No longer produced either. Currently, I have two Jetex models ready to go. These engines are not easy to light off. I have expelled about 6" of wick trying to get it to ignite. My dad was the one who mentioned the fuse quenching at the exit. This is exactly what happened to my attempt.
Ken Cook- Top Poster
- Posts : 5637
Join date : 2012-03-27
Location : pennsylvania
Re: Looking for JetX Fuse
They make this super small fiberglass tube insulation. I use this on my bead thermistors on the 3D printer heads to insulate the leads electrically.
Not cheap either.
https://www.filastruder.com/products/fiberglass-insulation-for-e3d-thermistors?utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping
Not cheap either.
https://www.filastruder.com/products/fiberglass-insulation-for-e3d-thermistors?utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping
Jason_WI- Top Poster
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Posts : 3123
Join date : 2011-10-09
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Re: Looking for JetX Fuse
Just for clarification, the hole that the fuse goes into is about .035". The next hurdle would be the screen it passes through in front of the pellet. The Powermax Jet-X fuse is much more reliable if it works in the Jetex. I believe it does. Ebay seems to be the best source for supplies.
Ken Cook- Top Poster
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Re: Looking for JetX Fuse
https://www.jetex.org/index.php/jetex-forum?view=topic&catid=8&id=7
Nitrocellulose...... that will get you on a watch list.
Nitrocellulose...... that will get you on a watch list.
Jason_WI- Top Poster
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Posts : 3123
Join date : 2011-10-09
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Location : Neenah, WI
Re: Looking for JetX Fuse
Would 1mm cannon fuse work?
http://paradisecurrency.com/index.php?p=product&id=198&parent=72
Aside from alibaba.com and Made-in-China.com where you need to order a pallet of the stuff, this appears to be the only site showing it available. I would try calling their phone # at the bottom of the page first.
http://paradisecurrency.com/index.php?p=product&id=198&parent=72
Aside from alibaba.com and Made-in-China.com where you need to order a pallet of the stuff, this appears to be the only site showing it available. I would try calling their phone # at the bottom of the page first.
Re: Looking for JetX Fuse
Thanks For all the replies , I called about the fuse Jacob and had to leave a mess. And thanks Ken for chiming in i know you have had some experience with the Jetex and the information was well informing . After some more than an hour of reading i do know i have a 50B Jetex engine now .
I know i am missing the screen and sealing washer with i think i can make ?! For the 10 bucks i have in it i sure hope to get a little fun from the adventure >> My next question is this fuel going to work?? https://www.ebay.com/itm/13119-2-JET-X-POWERMAX-20-Fuel-Pellets-for-Jetex-50-Motors/153410825637?hash=item23b7ff6da5:g:PMYAAOSwcZ1cU4S6 The case is Aluminum and dont want to melt it down lol
I know i am missing the screen and sealing washer with i think i can make ?! For the 10 bucks i have in it i sure hope to get a little fun from the adventure >> My next question is this fuel going to work?? https://www.ebay.com/itm/13119-2-JET-X-POWERMAX-20-Fuel-Pellets-for-Jetex-50-Motors/153410825637?hash=item23b7ff6da5:g:PMYAAOSwcZ1cU4S6 The case is Aluminum and dont want to melt it down lol
getback- Top Poster
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Posts : 10439
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Looking for JetX Fuse
1MM=0.0393701....... A bit fat for a 0.035 hole
But dang that is a cool site....mini cannon for $50 bucks may be a cool birthday gift to my self....grin
But dang that is a cool site....mini cannon for $50 bucks may be a cool birthday gift to my self....grin
fredvon4- Top Poster
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Join date : 2011-08-26
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Location : Lampasas Texas
Re: Looking for JetX Fuse
yeah i know Fred i checked it but i don't have alot of options at this time and i don't think .006" will make a big difference , so a reaming i will go if the fuse has a wire in it ??
getback- Top Poster
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Posts : 10439
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Location : julian , NC
Re: Looking for JetX Fuse
I have a few feet of bigger cannon fuse...no wire
Sneaking in a single strand of copper or wire tie soft steel should be doable... ....but still a PITA at that small diameter
I also suspect you could roll the 1mm stuff between two flat plates and make is slightly thinner
Sneaking in a single strand of copper or wire tie soft steel should be doable... ....but still a PITA at that small diameter
I also suspect you could roll the 1mm stuff between two flat plates and make is slightly thinner
Last edited by fredvon4 on Wed Mar 20, 2019 9:56 am; edited 2 times in total
fredvon4- Top Poster
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Re: Looking for JetX Fuse
well aleast Phil did call me back today http://paradisecurrency.com/index.php?p=product&id=198&parent=72 and there fuse doesnt have a wire core he said it was the first time he had beem asked , but for the price i may go ahead and get some and see if it will work if i coil it inside .
getback- Top Poster
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Re: Looking for JetX Fuse
I'm all ears here to see if it works.
Ken Cook- Top Poster
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Location : pennsylvania
Re: Looking for JetX Fuse
OK ordered today but still need some fuse // If your set on go i will send you a few ft. to try too ??
getback- Top Poster
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Posts : 10439
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Re: Looking for JetX Fuse
Rip fuses out of lady finger firecrackers?
pkrankow- Top Poster
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Location : Ohio
Re: Looking for JetX Fuse
Oh, lady finger firecrackers..... One of the many fun things that are prohibited up here! Damn, I wish I had some for some fun.
NEW222- Top Poster
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Location : oakbank, mb
Re: Looking for JetX Fuse
Phil that fuse want work for one to short , watch a short video and see what i am aiming for
getback- Top Poster
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Posts : 10439
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Re: Looking for JetX Fuse
The video makes it look too easy. I can assure you they don't always light off like that
Ken Cook- Top Poster
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Re: Looking for JetX Fuse
That is neat. I have read of these engines before, but never seen one, let alone see one in action. Thanks for sharing.
NEW222- Top Poster
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Re: Looking for JetX Fuse
The fuse i order hasn't got here yet but i did score on this https://www.ebay.com/itm/NOS-Jet-x-Powermax-Motor-set-JX-1-50-size-with-25-fuel-tablets-Jetex/254167719867?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Been waiting awhile for a Good deal and I think i got one + will give me something to compair the other fuse to .
getback- Top Poster
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Posts : 10439
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Re: Looking for JetX Fuse
Nice score you got there. Also it is nice it is new in the package.
NEW222- Top Poster
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Re: Looking for JetX Fuse
OK finally got the fuse i had been waiting on over a month after talking to Phil , well i says 1mm BUT it comes in at .070" witch is 1.0778 mm Way to big i am going to call him tomorrow and see if this is what its supposed to bee . I don't think i could even put it in there for a boost of light for the pellet !
getback- Top Poster
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