Super Tigre C35 noise level

[Marty Hammersmith]

I was given a couple nice Super Tigre C35s I’d love to use on future control line projects. These are of a vintage that have oval exhaust ports with only the screw hole in the center for a baffle. My flying club is not especially noise sensitive but I also don’t want to be cavalier. Can I use these engines without a muffler or are they going to be silly noisy by today’s standards?

[Brett Buck]

I was given a couple nice Super Tigre C35s I’d love to use on future control line projects. These are of a vintage that have oval exhaust ports with only the screw hole in the center for a baffle. My flying club is not especially noise sensitive but I also don’t want to be cavalier. Can I use these engines without a muffler or are they going to be silly noisy by today’s standards?

   It will be extremely noisy.

     Brett

[Marty Hammersmith]

Is there a muffler solution for these engines?

[Frank Imbriaco]

I have a ST C35 and it is loud.
I bought a tongue muffler for it which I used just once.
 I'm willing to sell it for a fair price.
PM me if interested.

[M Spencer]

All the ' C ' & 21 - 35 are the same piston & liner . Except of course the C 35 ' S ' .

A .020 / 20 thou. shim / washer is under the liner top lip on my C 35 p.d.p.  A real profesional shim / washer !
id same as liner od. od same as top flange od . If you want to twist mr Lee's arm . EXACTLY .020 .

THIS gets the liner so the pistons not getting sub piston induction , at top dead center . So NOW YOU KNOW .
Looks like a factory part on late engine . Due to the whineing in engine tests re power loss muffled .
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The Std S T 46 muffler with a strap , or early Merco ( which has a " U " wire for round the case, with threaded ends for nuts in muffler .
A lotta dudes ran Big Art mufflers on S Tigre .46's , with maybe the hole tapped 4-40 . As Les McDonald was saying in His Stilletto saga.
ONE 4-40 bolt to your existing thing.


This is the orrible factry STRAP FIT muffler . Got a new ' blow thru ' one from a 21/40 RV , like was commion too , early 70's.

Id think a long bolt through any ST muffler, drilled. Might work . The 60 muffler the lips are a 1/2 mm further out , to catch the exhaust stack .
but otherwise similar or the same . Just gotta find a long bolt . Check if theyve the liner spacer . Likely only on later ' muffler lug ' case series .
https://www.worthpoint.com/worthopedia/art-adamisin-os-max-35-control-line-291036052
Like wotcher got ere .

ALSO , you want to glare in at the piston top . If its gotta baffle , its Christmass , as its a STUNT series .

p.s. were KAVAN & perhaps Mecoa strap fit ones to suit too , not to mention TATONE .peace pipe . ( in a search ) .

hairy Device . Seen plain outer ones with one bolt to thread in stack . May even have not thrown one out .
The ' ELBOW ' shape plain finish lite wt. one might be what you want , Being notta lotta DRAG . Man .

[Frank Imbriaco]

Supertigre not the lightest option out there, but very good engines. The C lighter than the G. IMO, if you use a can muffler similar to the one pictured, you will not only have a reduction in power but an additional nose weight penalty to say nothing but extra drag to boot. Check your cg before you decide and like others have indicated, don't run it without anything on a stunter.

[Dennis Toth]

Marty,
There are some mufflers with the single center bolt (Enya has some). Check with Randy Smith and Tom Dixon in the vendor section they will have something that will fit.

Best,    DennisT

[Paul Smith]

Is there a muffler solution for these engines?

I was never satisfied with strapping or bolting a muffler onto an unmuffled engine.
Spare yourself the punishment and just get an OS FP or LA that was designed to be muffled.
Put the ST on a combat plane like The Lord intended and fly it where you can.

I have never experienced a muffler that muffles a CL engine enough to get you into a venue where sound is an issue.

[Dennis Toth]

One other place for a muffler is on facebook in the PAMPA control line group Stan Frady makes mufflers for lots of older engines that didn't have mount bolts, look him up.

Best,    DennisT

[Andre Ming]

I was given a couple nice Super Tigre C35s I’d love to use on future control line projects. These are of a vintage that have oval exhaust ports with only the screw hole in the center for a baffle. My flying club is not especially noise sensitive but I also don’t want to be cavalier. Can I use these engines without a muffler or are they going to be silly noisy by today’s standards?

Can't help you with muffling them. BUT...

If you decide you would like to pass one or both of them on to someone else, I'd be interested.

Andre

[Brett Buck]

I have never experienced a muffler that muffles a CL engine enough to get you into a venue where sound is an issue.

     Mostly because sound is just an excuse. I have heard people file noise complaints about gliders and electric. It has nothing to do with noise, it has to do with various "Karens", with their usual logic, trying to shut you down for whatever reason.

    There were legitimate complaints about unmuffled engines, I can't tolerate them any more, either, and stay away from open-exhaust. That's what got model flying banned from essentially every park. Something like a 20FP is hardly any worse than an electric, and the *stock muffler* is key to making it run correctly.

Point being, there certainly are effective muffled engines - a Supertigre C35 is not one of them -  but that is not going to help you with most of the people who want to shut you down.

     Brett

[Dan McEntee]

   If you really wanted to try a muffler, I think something like a Scott Dinger or Randy Smith style tube muffler would be best to keep noise to a minimum and excess back pressure to a reasonable level. I don't know if either of these guys are producing them right now but if you could find one used that fits close and adapt it, it may be worth trying. It trying a tongue muffler, make it as long as possible, have some holes on the end plate and have additional holes on the side. This will know the sharpness of the exhaust note down and quiet it some. I have played around with this configuration a little bit and it's pretty effective and better than nothing.
   Type at you later,
    Dan McEntee

[GERALD WIMMER]

    " Mostly because sound is just an excuse. I have heard people file noise complaints about gliders and electric. It has nothing to do with noise, it has to do with various "Karens", with their usual logic, trying to shut you down for whatever reason.    "
     Brett

That statement reminds me of when I used to fly demonstration flights at MOTAT (a museum in NZ) we used to get noise complaints when it was windy and did not fly and mowed the lawn instead. The museum was very sympathetic to our cause along with the local council as they knew the neighbors just loved to complain about anything that went on that looked like fun and made a noise like the live steam engines or military vehicles. Council when they did noise readings/assessment of our planes could not hear them over the road noise at the edge of the site but you could see them .

On the C35 I have used Tatone peace pipes and the like but the engine will not like it unless its a larger volume muffler.

Regards Gerald

[NED-088]

The first C35 I saw and heard was in Bert Metkemeijer's (One of my stunt mentors and yes, the WCh TR '78) first Trianic (he later enlarged the design and made two more with a G21/46).
At first there was no silencer:


By the time silencers became mandatory when flying FAI contests, he put on an OS Jetstream
It ran flawlessly with that silencer and was not very noisy.
I later had Jetstreams as well on both my Fox 35 as well as G21/46.