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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › OS 105 Max-Hz /Hz-R
10-14-2011 06:18 PM  6 years agoPost 21
MikeSherman

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Racine, WI

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...there was gobs of tongue-in-cheek sarcasm with my statement regarding K&N....especially since 98% of us don't even run air filters!

-Mike

Team QuickUK Pilot
Team Heliproz

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10-14-2011 11:33 PM  6 years agoPost 22
Helicrazy4

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West Virginia

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Very nice will be getting one soon as they come out! Sweet looking engine!

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10-15-2011 12:12 AM  6 years agoPost 23
RaptorRob

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hamlin P.A.

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Price conversion looks like it will be over $500 for just the hz

no babe i swear i sold my other heli to buy this one :)

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10-15-2011 02:11 AM  6 years agoPost 24
w12martin

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Chengdu, Sichuan, China

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The final price should be round 20% less than that
BTW, I think the Yen/Dollar conversion is not a good indicator since Japan is struggling to keep the price of exportation goods unchanged regardles of the fluctuations of their money in relation with the Dollar.

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10-16-2011 01:24 AM  6 years agoPost 25
777ER

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Westchester county, NY, USA

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When will this be available in the states?

-Chris

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10-16-2011 01:33 AM  6 years agoPost 26
gotnoclue

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sydney

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Yeah it would be suicide otherwise as no other heli has mounts that will fit a bigger motor.

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10-16-2011 05:48 PM  6 years agoPost 27
sky'

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..

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Hi guys,

i am a little bit angry!!

I bought two OS 91 HZ-R 3D with OS 91 PowerBoost Pipe for 1.700,- USD, 2,5 month ago.

Now present OS the new OS 105 engine!
Damn - that can to be true!!!

Nobody will pay a good price for a used engine!!!

Why have OS not to create a 120er engine??!
20ccm are more than 17ccm!

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10-16-2011 07:45 PM  6 years agoPost 28
sks

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london

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I don't know whether I should say this or not . . . .
if you think about it our hobby is basically held to ransom by YS or OS if you intend to run nitro.

unlike airframes which are now getting cheaper and more affordable mostly due to Align literally dominating the market, and higher quality manufacturers losing market share etc. . . OS and YS has literally held their position in the market place (probably same thing going on for the electronics manufacturers).

why can't there be an "Align" like manufacturer for engines? Suppose that can't work since these engines now are at the cutting edge of performance and anyone trying to go lower quality will simply not live up to expectations (look what happened to Webra - awful engines anyway!).

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10-16-2011 09:24 PM  6 years agoPost 29
teamjrpilot

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Australia

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I think i can answer that, and it's quite simple, no other engine manufacturer has been able to produce as good running or quality of engines other than O.S or Y.S.

Why would align want to copy an O.S engine when they just have O.S re brand them.

I think there would certainly be a market for another engine brand but only if it could really take it to the others in the power, quality and price arena.

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10-16-2011 09:32 PM  6 years agoPost 30
sks

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london

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and this means they'll keep on pushing up the price. . . .

I'm sure you can get a TRex 700 kit with change left over for the price of the 105 with dedicated muffler.

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10-17-2011 01:02 AM  6 years agoPost 31
jbjones

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Columbus, Mississippi

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why can't there be an "Align" like manufacturer for engines?
Ummm...because it wouldn't be "quality" perhaps?
look what happened to Webra - awful engines anyway!
BS. Have you ever owned/run one? They were excellent engines. Ya gotta tune 'em. That isn't so easy for most folks, so I understand your distain for them. Webra engines were one of the most carefully crafted engines around. Problem was, they were designed for low/zero nitro fuel content, and folks in the US tried to shoe-horn 'em into our envornment (high nitro content fuel / lazy and ignorant users).

Back on topic, I think the new OS 105 is a bit behind. YS has been working on the 120 for quite a while. It'll be fun to see how this works out. It'll be even more fun to see how FAI views this. Will the .91 limit be upped? We shall see....it is very interesting times my friends....

-Joey

J. B. Jones

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10-17-2011 01:05 AM  6 years agoPost 32
sks

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london

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Ummm...because it wouldn't be "quality" perhaps?
that's the point I'm trying to make: most people would not settle for less. However when it comes to airframes . . .

I think the only person who cares for nitro in FAI is Scott Gray. The other competitors don't really care for it judging from the results, and besides why hinder yourself with that damn changing CG as the fuel gets used up.
Webra engines were one of the most carefully crafted engines around.
don't make me laugh, they were awful. when they run well they run well, and I was part of the 5% - 10% crowd, but their quality control left a lot to be desired.

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10-17-2011 02:10 AM  6 years agoPost 33
Dr.Ben

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Richmond, VA, USA

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The idea of a 120 was not beyond the vision of OS. They intentionally opted against a 120 because of very real concerns for bearing longevity, smoothness, and consistency of run as a result of trying to stuff a 120 piston in a 60 or 90 sized case with the same bearing that used to be used in a 61. Ultimately, added displacement is meaningless if a motor won't hold a consistent needle setting over the course of an entire flight when the mixture is set for just a bit off maximum power.

As I have said in another thread, regardless of how well the YS120 did in testing with Tim and a few others, no one is going to really know how it's going to do in the US until Joe-Shmo customer who lives in a nasty hot climate and who can't tune much more than a one-string guitar gets a hold of one. Some guys can eff up a wet dream, and the more demanding a product is of modeler skills in a world where many can't adjust a throttle curve and couldn't balance a set a rotor blades if they tried, the chances for problems are markedly higher.

With respect to F3C, what you may see happen is the maintenance of the current weight limit and a move to no limit on IC power plant size. Ultimately, you can't put but so large an engine in a model with a weight limit because of added engine weight, fuel requirement, and associated larger clutch and driveline to support it. Even if the rules do change, you'll not see IC become a part of F3C competition to any degree. Even if power reaches par with an electric, you're never going to match the smoothness and presentation of an electric F3C model with an IC model.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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10-17-2011 02:22 AM  6 years agoPost 34
jbjones

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Columbus, Mississippi

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don't make me laugh, they were awful.
Laugh all you want. It's no skin off of my rear. I ran plenty of 'em and had good luck.
Even if the rules do change, you'll not see IC become a part of F3C competition to any degree.
Dr. Ben, I sadly agree, and can't say that I'm happy about it.

I've read/seen it all...electrics are easier on the servos, airframe..etc..etc...It's just sad. Almost like the end of an era. I grew up with glow fuel, and I am not ashamed to say that I'll stick with it. It's sort of demoralizing that its future is starting to be questioned.

J. B. Jones

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10-17-2011 03:51 AM  6 years agoPost 35
Dr.Ben

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Richmond, VA, USA

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I understand. My enjoyment with electrics does not overshadow my still strong love for tuning nitro engines. Those skills are gained over a lifetime, not over a few days, weeks, or even months. It is kind of a pity that a segment of the modeling public that never even tries a fuel powered model may never have the chance to learn that skill set. On well.......

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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10-18-2011 02:01 AM  6 years agoPost 36
Tyler Benson

rrKey Veteran

Louisiana usa

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I WANT A VIDEO !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Team Ready Heli
Team Gaui USA/ Empirerc.com

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10-18-2011 02:55 AM  6 years agoPost 37
madman22

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Alexandria Louisiana

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After seeing that im buying stock in morgan fuels. Im gonna need it.

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10-18-2011 03:59 PM  6 years agoPost 38
blade3d

rrElite Veteran

New Jersey USA

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The idea of a 120 was not beyond the vision of OS. They intentionally opted against a 120 because of very real concerns for bearing longevity
----------------------------------------------------------------------
----------------------------------------------------------------------
Does that mean YS is stupid ,,YS has always seem to be the smoother less trouble engine to me.

Blade3d

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10-18-2011 05:01 PM  6 years agoPost 39
Dingo07

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Newport Coast, CA - USA

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Why would one choose to run this glow fuel engine over a gasser?

Disregard that question... I see it's smaller cc

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10-18-2011 06:27 PM  6 years agoPost 40
rilopez825

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Pembroke Pines, FL

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From what I read the Specs OS 105 is 3.8 and the OS .91 HZR 3d is 3.6 then it’s not worth the jump for the added weight, plus added fuel consumption and possible vibrations.
The Practical RPM is 500 less than the .91 3d speed engines.
Do you guys think it will really make any difference?
I will just stick to my OS91hzr 3d motor. Or jump to the YS if I really had the need for the extra power.

Richard

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