RunRyder - New 80, 90 Shadel muffler

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Main Discussion > New 80, 90 Shadel muffler

Dabling
Heliman
Location: Studio City, California

Hey guys,

I've been testing a new muffler from Performance Specialties and I have to say it's absolutely awesome. Dave Shadel makes it and he hit it right on the head. It gives you tremendous power but with the added convenience of a two piece muffler. I did a test with the KSJ muffler and it blew it out of the water. I'd say I'm getting 15 to 20% more power out of my YS 80 with this new muffler.

Remember the throttle barrel "rich" problem we've been having with the 80? Well this muffler completely cures that problem. The Rich spot no longer exits. This muffler absolutely breathes better allowing you to utilize the full potential of the motor. I've had to add add more pitch and tone down my throttle curve because of the added power. My Fury is a rocket ship with this muffler and now I have more than enough reserve to get through any maneuver.

Here's the best part! It's only $100!!! The muffler is CNC machined so the fit and finish is beautiful. Dave is working on the clamp for it now so it's not quite finished but the mufflers are available now.

Call him at 775-265-7523 to order one before he runs out of his first batch.

I'll be testing this muffler on the 60 engines as well. This should put the power of the sixty motors into the 80 range. So if you have a sixty that needs some spark to get it to perform, this may be the ticket.

For those of you who want the Muscle pipe performance but can't use it on the YS, this muffler is the key. You'll be quite surprised.

One thing I can't reitterate enough is the safety issue now that we these machines are getting so powerful. Always check your machines from top to bottom after every flying session and always do your preventative maintainance. We want everyone to enjoy what these helicopters have to offer without anyone getting hurt. Please look out for your fellow pilots and exchange all the good information that's out there so that we all can enjoy this great hobby even more.

Dabling

02-05-2002 Over year old.

HOMEPAGE

sabastian
Heliman
Location: Los Angeles, CA

visual experience

Guys,

I just recently have seen Dob fly his fury 80 with this muffler and it is unbelievable. The power difference between the ksj and also, sorry to say, the hatori has nothing on this new muffler. im going to order 2 for myself. 1 for the fury 60, and 1 for the fury 90. I definetely highly recommend this new muffler to anyone out there thats a power junky and looking for some more umf for the cushion.

02-06-2002 Over year old.

GM1
Elite Veteran
Location: Tallahassee, Florida US

Power vs Peformance

If Dave has anything to do with it, there is no doubt it will make power. My question is: I know how to make power with the YS80, can you get the motor to be dead smooth at a 1400 rpm head speed in a hover AND be quiet? I haven't seen one so I can't say but if it does, there is a big market for it.

On a dog sled team, if you're not the lead dog, the view never changes.

02-06-2002 Over year old.

Ron Cosby
Senior Heliman
Location: Shreveport, Louisiana

Has anyone heard if Performance Specialties is back in production on their piston/sleeve upgrades?

02-06-2002 Over year old.

z11355
rrMaster
Location: 10000 is enough time wasted.

yes, they are back. I just got one.

02-06-2002 Over year old.

HOMEPAGE

ToXcell
Heliman
Location: Central California

Performance Specialties

I just received an email from Performance Specialties last week, and they told me to check back with them in 30 days. I was looking for a piston and sleeve for my OS 61 WC.

02-06-2002 Over year old.

Dabling
Heliman
Location: Studio City, California

GM1,

In a hover in normal, I've turned the throttle way down to get a nice quiet hover. The sound is similar to a hatori at this point and super smooth. But when you really crank it up, it has a raspier tone to the exhaust note because of the performance tuning characteristics of the muffler. Even that tone can be quieted a little with an exhaust deflector.

For those of you who don't know who Shadel is, he's been around for years making hop up performance parts for motors (especially for airplanes). I'm sure even helicopter guys have heard of a "Shadel piston and sleeve." He really knows motors inside and out. So I wasn't the least bit surprised when I saw how much my YS 80 came to life when I bolted this new muffler on. From looking inside the muffler from the exhaust end you can see some of the baffling that he has going on in there which creates the right flow for the exhaust.

Like I said before, the rich spot on my carb no longer exists. So maybe the barrels were never the problem and we were just using the wrong mufflers all along. Something for you all to think about.

Dabling

02-07-2002 Over year old.

HOMEPAGE

Jay
Heliman
Location: Home, Home on the Range...

Rich Spot?

I thought it was a Lean Spot at about 40-60%. Am I wrong?

02-07-2002 Over year old.

HOMEPAGE

Furyous
Senior Heliman
Location: Detroit, Michigan

Rich spot

Jay,

There is actually a rich spot in the YS-80. It is most noticeable in a sustained inverted hover, while using a governor. There have been several of us working with YS to come up with a solution for the rich spot and it seems as though the installation of the YS-61 throttle barrel does the trick. You can noticeably see the difference in the cuts made on the two barrels, and the difference is quite drastic. The 61 barrel has no negative characteristics, when used on the 80, and it take away no power.

I have not tried the Shadel muffler, but from what Dabling says, it seems as though "there is more than one way to skin the cat."

By the way, sport and FAI style flyers love the way the motor runs with the richer settings. It is a small group of hardcore 3D pilots that notice the difference or find it annoying.

Kevan Bowers

02-07-2002 Over year old.

Dabling
Heliman
Location: Studio City, California

Put some more tests on the motor today with the Shadel Muffler. I've richened up the motor a bit to back down off the power since I don't have my governor installed yet.

By richening up the motor a bit, I've started to notice the annoying blubbering rich tendancy that wasn't there before with the leaner setting. Since my governor isn't on yet, lowering my throttle curve and richening up the motor is the only way to tame down the power that this combination provides. Now the bad characteristics of this barrel is really starting to show up. Of course I could lean it again to get rid of this rich spot completely, but the power I'm getting can be just a little too much for typical flying at the leaner needle settings. I'll change out the barrel this week and let you all know the results.

So far, this muffler is working absolutely great and my Fruy Extreme is a rocket ship. Once the barrel is changed out and the governor gets installed, it should be perfect.

Dabling

02-11-2002 Over year old.

HOMEPAGE

ed vega
Key Veteran
Location: nyc, queens

yes he does nice work on motors and pipes ..

but why do you need 20% more power with a 80, why not just put in a 91?? instead .. I didn't think a 80 needed any more power , is there a power problem with the 80 size motors ?..

as a shadel modified 61 does just fine too ..

02-11-2002 Over year old.

Dabling
Heliman
Location: Studio City, California

You can still bog these motors during certain maneuvers. The whole point is have enough reserve in the motor to get through the newer maneuvers that we're now creating with the advent of the added power.

Have you ever seen the fuel economy of the 91? Hmmm.

02-11-2002 Over year old.

HOMEPAGE

GM1
Elite Veteran
Location: Tallahassee, Florida US

Muffler test

Dabling,
Dave sent me one to test which I received Friday (but was gone to Orlando to fly with Todd and Jason) so I'll get it on a model this week and see how it performs on an FAI style setup. If it works better in a 3D application, I'll stick it on the Fury and let it go.
I talked to Todd about it and he agreed that it made more power than the KSJ whiile retaining the docile characteristics of a Hatori.

On a dog sled team, if you're not the lead dog, the view never changes.

02-11-2002 Over year old.

Dabling
Heliman
Location: Studio City, California

Keep me posted on your results ok? He's sending me the new mount for the muffler so I'll post that so you all can see it. The mount that you all saw was one that was modified from an early hatori mount.

02-11-2002 Over year old.

HOMEPAGE

JSaleska
Senior Heliman
Location: Navarre FL

So has anyone tried this new Muffler on the OS91s? I'm currently running the Hatori one peice long Muffler on my OS91, and personnaly I could stand some more power.

Jon sends.

02-11-2002 Over year old.

HOMEPAGE

Lapointe
Senior Heliman
Location: Enumclaw, Wash

Muffler

The OS 91 gets better fuel economy then my YS motors and also make more power and have no problem in mid range or anywhere else. I have been selling the YS motors off and have one left and will probably go to all OS as they are very reliable and strong running as well as easy to fine tune. Besides why should you have to change out the carb barrell after spending that kind of money and still have a less powerful motor? It seems to me if you need reserve power for new manuvers why not go with the most powerful and trouble free motor out there ? The OS has aprox 20% more power then the YS and when you put a Modified MP on it it is aprox 30% more powerful and that is with the YS 0n 30% cool power and the OS on a mix of 15% and 30% to make it 22.5% which saves a little on fuel cost and is just as smooth. I can't wait til Curtiss comes out with his New 90 size MP.

Keith Lapointe

02-11-2002 Over year old.

Dr.Ben
Elite Veteran
Location: Richmond, VA, USA

Just as a point of record, the barrel issue with the 80 is being handled as a warranty item. You are not expected to purchase a new barrrel if your motor is acting up with the stock one. You'll need to send the stock barrel in, but you'll get a new STII barrel as a swap. You can call Richard Verano at Performance Specialties if you are having the midrange burping/richness problem.

As for the brute power issues, I'll trade a bit of a hp difference for the almost perfect needle consistency of the pressurized YS system any day. OS must place some value in a pumped system, or they wouldn't be R&D'ing the application of the Varsane pump to the motor.

Ben

02-11-2002 Over year old.

Augusto
rrAdvertiser
Location: San Diego, CA

Keith,

That's odd. While taking lessons with them, I was talking with Todd and Jason about this subject and they both agreed that the 90 has a bit too short a time flight due to the higher fuel consumption. (Not that 7 minutes of Jason's style of flying is not more than enough of an adrenaline overdose). I had the same experience with my YS-80 and my OS-91. That's why I added an additional tank to the 91 so I could fly for a long time on hard 3D without worrying about the fuel level so much. In Todd's opinon the 80's fuel consumption gives you an additional 3 to 4 minutes of flight time and that's also my experience. Now if you use a governor and your head speed is not too high, say 1650, then the flight time on the 90 is greatly extended. What I do in the one I have without the extra tank is I switch between 1650 head speed while doing simple aerobatics and 1850 for the harder 3D maneuvers. It took me a bit of time getting used to the different cyclic responses but after a while I got used to it.

One of the most important things I learned from Todd was how to manage the collective. His school Furys are powered by YS-61ST2 and to me being used to my 91 powered ships they seem a little weak during certain maneuvers. Todd showed me how it wasn't that much the maneuver as much as me not "managing the power". He took the controls and made some maneuvers with and without good power management and asked me to learn to "listen" to the engine. Once I learned the trick I was able to do my piro loops and piro flips not loading the engine without any loss in altitude. I was even able to do my bouncing death spiral with a 60 and belive me, stopping a full speed death spiral with a sideways funnel and bouncing back up REALLY loads and engine.

Nevertheless I love the super dupper extra power of the 91s but I still worry about fuel consumption. Just a couple of weeks ago I ran out of fuel while doing a morphing funnel and I lost a lot of head speed because it stopped while the rotor was heavily loaded. I was able to flip it over and had to do a hard landing due to lack of head speed. That's when I decided to start using the radio's timer whenever I fly the 90's.

Avant Aurora Ultimate

02-11-2002 Over year old.

Lapointe
Senior Heliman
Location: Enumclaw, Wash

OS 91

Well you hit it on the head as I fly with a head speed of 1650 which I learned from Todd at our heli classes. This is a good head speed for me. I run the GV-1 and I have found I need the higher head speed to fly the YS 80 thru the same manuvers as the OS 91. The OS is a grunt and can pull stumps.
Actually i find it to be very smooth and get longer flight times out of both my 91's so i am going to go all OS. Need a like jnew YS 80 ???

Keith Lapointe
P.S. What about the carb mod deal ? Also collective Managment is a good thing

02-12-2002 Over year old.

DrScoles
Veteran
Location: Redmond WA

I feel like my OS91 has a very similar run time to the YS61. Can't compare to the YS80, but I feel like I'm getting about the same amount of run time as I did with the YS, and I am running the 91 RICH. I'm sure a governor saves a little. I'm running 1750 in idle1.

It seems as though a pumped engine would be a littler thirstier, I know it is between the OS61 and YS61...

Aren't some of these guys using perry pumps on there 91's?? That may explain the shorter run time...

Mike

02-12-2002 Over year old.

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Main Discussion > New 80, 90 Shadel muffler

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