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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Hot setup for YS .61 ST2......
09-03-2003 04:32 AM  14 years agoPost 1
Lift

rrElite Veteran

Houston, TX

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Guys,
I got some time on my Predator SE this week with a new muffler. Thought I would share this with you folks who have a YS .61 ST2 that are looking for more power.

I had read here on RR last summer from a couple of guys that tried the larger volume Hatori mufflers on their ST2's. Well, I don't recall what they were using but I browsed around on Century's site and found the CNH972 muffler. It's says on the box that it's for the YS 91 and OS 91. It's an older style single baffle 2-piece that was from the era last year when the new YS 80 and OS 91 were catching on. Well, those mufflers have been replaced with the MP2s and SB-16s of today. So, that leaves some of these as great alternatives to the 60 class.

What I have been running with this muffler is the Magnum Heli Plus(30%) +/-10 degrees with a 1750 headspeed. The motor pulls right thru like some of the heavier 60 ships running 90 class motors. Now granted my Predator SE weighs 9lbs 6ozs but no matter what heli you got I HIGHLY recommed this muffler. I prefer the 2-piece on the Predator because the engine is rear facing and the muffler hangs out the rear. If you hit the ground while upright hard you stand a better chance of not damaging the motor instead of a standard one-piece design.

Anyhow, thought I would share........

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09-04-2003 02:42 AM  14 years agoPost 2
michaelmillikin

rrApprentice

Granite Falls NC USA

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lift

do you think thats what came on my ys 61???

looks the same. atleast to me in the pic..

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09-04-2003 04:07 AM  14 years agoPost 3
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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Graphics.......

NICE touch on that paint job........just the right amount of "spice"

James

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09-07-2003 02:10 PM  14 years agoPost 4
SteveH

rrProfessor

Texas

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Payton,

Have you tried the Century muffler like I have, and if so, is there an improvement with the Hatori?

Now does a question like that put a rep on the spot, or what?

The government cannot give you anything without first taking it from someone else.

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09-07-2003 02:33 PM  14 years agoPost 5
Lift

rrElite Veteran

Houston, TX

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Steve,
Just prior to trying the CNH972 I was running the CN3057C (Center mount) Speed Torpedo muffler for the YS .61 ST2. It doesn't have the power of the Hatori CNH972 but it is quieter and fits the Predator better from an aesthetics standpoint. So yes, there is a noticeable difference in power. So much so that I started the post.
Here is the CN3057C for the YS 61 ST2 I had on:

And here it is on the heli:

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09-07-2003 02:35 PM  14 years agoPost 6
Lift

rrElite Veteran

Houston, TX

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Michael,
You have the CN3057F(Front mount).

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09-08-2003 12:18 AM  14 years agoPost 7
choppengruven

rrKey Veteran

Flagler County, FL USA

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Payton,
If this is an older muffler, is it going to continue to be available? I've (finally) decided I'm going with the SE and the YS61, but likely won't be getting to whole nine yards for a few weeks, or possible a couple of months. I would, however, order this muffler now if it was going to be a problem getting it later.

Thanks,

Harold

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09-08-2003 04:01 AM  14 years agoPost 8
Lift

rrElite Veteran

Houston, TX

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Chop,
I really don't know about it's availability. There are other 2-piece offerings for the YS80 that will do the job just as well. I just ordered the Century one as they had it in stock.

I would get one if I were you though...

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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Hot setup for YS .61 ST2......
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