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HomeAircraftHelicopterGasser Model RC HelicoptersOther › RJX 90 Muffler Experiences???
02-04-2012 11:48 PM  6 years agoPost 1
mecha1000

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Mount Royal, NJ

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I would like to know experiences from those of you that have used it for more than 3 months? I had a Century V5 and it was good but had a crash and now would like to buy an RJX 90. I have read one or two bad experiences in the forums, but I know there has to be good ones out there as well. For $100, it sounds very attractive!

Yes, I read the review in Gas Powered Thoughts...very good by the way.

Thank you.

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02-05-2012 01:02 PM  6 years agoPost 2
Bill Clontz

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usa

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It is the same as the hatori, but weighs an ounce heavier for some reason. I have one I could sell you for $50.... pm me if interested.
I went back to the v2 slim because it is so much lighter..

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02-05-2012 02:12 PM  6 years agoPost 3
fastflyer20

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N. Tonawanda, NY

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That is a great deal. Mine has held up very well with a few minor crashes causing some nicks and dings, it has around 250 flights over the past year. I did have to resurface the metal adapter plate to get it to seal up perfectly, now it is leak free.

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02-05-2012 05:18 PM  6 years agoPost 4
mecha1000

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Mount Royal, NJ

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Rjx exhaust
Indycustombikes

Pm sent!

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02-09-2012 01:26 AM  6 years agoPost 5
mecha1000

rrNovice

Mount Royal, NJ

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Rjx exhaust
Thank you indycustombikes.

Got the exhaust today and it looks great. The gasket and the sealant are greatly appreciated also.

I will send you the $50 + $9 shipping tomorrow morning.2-9-12.

Thank you, it has been a great experience.

Mecha1000

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02-09-2012 02:09 AM  6 years agoPost 6
Bill Clontz

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usa

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Happy to help........

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02-09-2012 04:34 AM  6 years agoPost 7
turboomni

rrProfessor

East of the Equator

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I own a RJX that I bought for 100 bucks I guess. The only other gasser muffler I have had experience with was the high quality Zimmerman muffler made for the Miniature Aircraft 1005. This muffler was plug and play. It has never leaked and still performs as new. I have had it for quite a few years. The RJX was a gamble for me,,,Chinese and cheap. I did have some leakage and all the flanges are NOT milled.. You need some kind of goop to fill in the non machined surfaces. I used high temp silicone engine block sealer. And after a few attempts all is good. It is abit finicky compared to the high quality Zimmerman ,,but so was the Hatori which it was copied from. This is a Chinese copy of a Hatori for the most part ,,,there is no real reason for the Chinese to innovate as there are no patent laws and more importantly WE STILL BUY THIS POOP. But this Chinese POOP in my experience does work if you keep an eye on it.

Setup is everything, All my heli's can fly far better than I can pilot them

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02-09-2012 12:35 PM  6 years agoPost 8
Bill Clontz

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usa

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I use a high temp gasket and flange sealer that is like peanut butter until you fire the engine it cures with heat, good to 1400 degrees sustained, wont melt out like rtv.... this stuff simply doesnt leak.... ever! on the engine I use just the stock zenoah muffler gasket dry, I use a flat piece of wood or steel with 600 grit da sander disk attached to sand mating surfaces flat for the gasket. you could also use a file if very carefull. I have mounted the century slim, the hitori and the rjx all with this method and never had one come loose or leak.... oh I also put just a tiny amount of sealant on the threads of the muffler screws.

I dont have the sealant in front of me just now, will post the info later.... if anyone is interested.

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02-09-2012 01:21 PM  6 years agoPost 9
mecha1000

rrNovice

Mount Royal, NJ

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indycustombikes

So you install the gasket between the engine and the metal spacer, then the sealant followed by the muffler. Is that correct?

turboomni

Thank you for the feedback.

thanks

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02-09-2012 08:59 PM  6 years agoPost 10
Bill Clontz

rrApprentice

usa

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Correct, gasket to engine dry, then the surface of plate to muffler use the sealant...

The high temp. sealant by the way for those interested is:

JRD-7100
JRD industries inc.
Claysville, Pa.
724-663-7603
I believe I called them and they sent me to a local dealer.

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02-10-2012 12:01 AM  6 years agoPost 11
mecha1000

rrNovice

Mount Royal, NJ

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RJX does not work on the RADIKAL G30
Sad day for me... the RJX/Hatori does not work on the G30. The baseplate hits the frame. I tried putting one spacer for a total of two (including the metal one that comes with the muffler) and still does not work.

I will see which other muffler will work besides the Century V2/V5.

indycustombikes, I will send you a pm either later today or tomorrow morning.

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02-10-2012 03:35 AM  6 years agoPost 12
Doug Darby

rrVeteran

Dallas, Texas

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If you really wanted this pipe to fit ....
It looks to me that you could mill some off the spacer and possibly some off the frame to make it fit. You would then need to add an additional thin brace to the frame to regain the strength to the frame. Not simple but not terribly complex.
Also not as easy as using a pipe that fits.
Just an alternative.
Good luck.

doug

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02-10-2012 12:21 PM  6 years agoPost 13
Bill Clontz

rrApprentice

usa

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Wow, that is a poor design....... or design flaw!! I am not familiar with the radikal, but i would modify the frame, otherwise you can only use century pipes... or maybe that WAS the intention.....hmmmmm

Let me know, I was just trying to help out, if you need to send me back the pipe thats cool I can refund you. or possibly someone else on here could use it??

Maybe a photo from the underside of the frame so I could see what's there. you could get a wider spacer I guess but dang what a bummer.

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