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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › Wonder if we will see bigger motors.
10-13-2010 01:49 AM  8 years agoPost 1
thenewguy

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Corvallis, Oregon Where there is liquid sunshine!

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Wonder when we will start to see bigger motors from O.S. and YS. I would love to see a 100 or something larger. What ever happened to the Thunder Tiger 106 or whatever they where developing?

Maybe a fuel injected motor for our helis. Something that adjusts it's self to outside temps to make power.

Just a thought.

Chris

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10-13-2010 01:53 AM  8 years agoPost 2
venture_flyer

rrApprentice

Fredericksburg VA

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bigger motors
I have seen some webra motors in a magazine that were around the 110 range or so. I think it is only a matter of time but also electric is taking over and fuel costs are going through the roof.

Eric

US Marine Corps 98-06. Disabled veteran of Operation Enduring Freedom and Operation Iraqi Freedom.

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10-13-2010 02:48 AM  8 years agoPost 3
4 stroke flyer

rrApprentice

Dowagiac,MI

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KME is making a 100 or bigger.

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10-13-2010 03:05 AM  8 years agoPost 4
Gernejr

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Miami, Fl

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KME has the 110 coming out soon check out his website. I like to see YS106SR=3DS or something..

Sponsored by Visa

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10-13-2010 03:13 AM  8 years agoPost 5
thenewguy

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Corvallis, Oregon Where there is liquid sunshine!

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I hope this drives the other manufacturers to release bigger motors.

Chris

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10-13-2010 03:15 AM  8 years agoPost 6
jbjones

rrVeteran

Columbus, Mississippi

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I think you'll see an explosion of larger displacement engines IF FAI changes their current limits on internal combustion engines. Remember, Japan (where O.S. and YS are manufactured) and the rest of the world for that matter, are highly into contest flying. I think that's a big factor into why those specific 2 manufacturers haven't released a larger displacement engine.

Of course, these are merely my opinions. YS or O.S. could come out with a >.91 engine tomorrow, and I'd be none the wiser.

-Joey

J. B. Jones

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10-13-2010 04:08 AM  8 years agoPost 7
Gearhead

rrMaster

Vt

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Webra makes a 100

and a 120

and a 150

http://www.webraengines.com/motor.p...er=HELI&lang=EN

Jim
Buzz Buzz Buzz

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10-13-2010 05:21 AM  8 years agoPost 8
G Steyn

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Heidelberg, Transvaal, Suid Afrika

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FAI changes their current limits on internal combustion engines
That is about to happen, since the current 91 size engines can't keep up with the 12s Li-Po powered motors.

A larger engine would require more fuel for the same flight time

Concentrate on your weaknesses and your strengths will reward you!

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10-13-2010 06:01 AM  8 years agoPost 9
thenewguy

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Corvallis, Oregon Where there is liquid sunshine!

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I hope we get bigger motors. I know my Rave ENV could handle it. The fuel tank is huge. I get 10 mins a flight at 1950 on the head. I would gladly lose 2 mins of flight for a motor that makes more power.

Would also like to see some type of new fuel system.

Chris

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10-13-2010 06:10 PM  8 years agoPost 10
Gernejr

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Miami, Fl

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ys will need to make whole new .motor to go bigger than 100 as there 91 is still base from 61. . OS could go 105 with just little more bore/stroke using Hz crank case. Im still playing with YS 95.6sr i built.

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10-13-2010 06:59 PM  8 years agoPost 11
Santiago P

rrProfessor

South West, Ohio

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All curent engines are overbored to hell with their current MOUNTING DIMENSIONS.

Bigger displacement on the current size crankcases would be a BIG mistake.

If industry increases the mount dimension AND FAI increases their limit for 2-stroke glow, THEN you will see better and bigger engines.

Now, do you know that electric powered flight for 90 size (700mm blade) helicopters on 12S are about as affordable as glow, with even 50% more power.
I love my nitro, smell, smoke and sound, but for competition, electric is the way to go.

By the way more power is not nescesary a good thing if the heli geartrain and components ca not take the strain. KNOWING HOW TO MANAGE THE POWER is the trick.

Santiago

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10-13-2010 09:26 PM  8 years agoPost 12
ssmith512

rrKey Veteran

Indianapolis, IN USA

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I dont know if bigger would be better. Might end up with a vibration monster. Fuel injection on current sized motors would be way cool though, probably could get more power out of an FI system.

Steve

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10-13-2010 10:16 PM  8 years agoPost 13
Gearhead

rrMaster

Vt

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"more power"
what did the do to today's 50s ??? think, ever look close at you 91, ??? , isn't it's carb pretty much the same size as todays's 50s and 70s,,

if you want more power from you 91 just put a larger Carb on it..

Jim
Buzz Buzz Buzz

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10-15-2010 01:24 AM  8 years agoPost 14
Gernejr

rrKey Veteran

Miami, Fl

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its not about just putting bigger carb on it, if the motor doesnot burn fuel it will just be all over heli. efficent is the key, ys91sr 3ds proved this ,they made the motor more efficent and it make better power and runs longer with same carb. OS hz regulated the fuel got mire efficent motor too. can they make 105 make 4hp and burn same amount if fuel as 91 sure . Watch when you see new KME110 bet you see alot YS and OS for sale. Im still playing with ys 95.6 sr that was making good power and run time same as 91 but feel it could/should be better. I had ported YS 91 making better power than 3ds and running almost 1 minute longer but pushed HS to high at 14^ pitch broke rod and holed case. oh well i learned a lot. Understand there alot money in designing ,testing and retooling to make new motor when they can make small improvements and we run out and buy to to gain .2 hp . look at all new 50 size motor in last year, there not totally new motors.

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10-15-2010 02:04 AM  8 years agoPost 15
Crashr30

rrApprentice

DFW

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Fuel Consumption
Supposedly through the grapevine I have heard that even though there are some test engines out there in the bigger sizes the only reason they have not been released is there thirst for fuel is such that flight time is greatly reduced. So carrying enough fuel on board is the issue to getting some decent flight times.

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10-15-2010 09:56 PM  8 years agoPost 16
Richardmid1

rrProfessor

Leeds, England

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...then you are adding weight and defeating the object. 50's in 50's and 91's in 90's are the perfect match and have more than enough power to do anything with as fast as you like! There is also no point in using a larger capacity motor if you cant tune it correctly.

60% of the time, it works every time!

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10-15-2010 10:12 PM  8 years agoPost 17
thenewguy

rrElite Veteran

Corvallis, Oregon Where there is liquid sunshine!

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...then you are adding weight and defeating the object. 50's in 50's and 91's in 90's are the perfect match and have more than enough power to do anything with as fast as you like! There is also no point in using a larger capacity motor if you cant tune it correctly.
I opened this thread with a general question if we would see larger motors in the future. Not a "If you new how to tune a motor" thread.
So please don't turn it into that.

I would like to see larger helicopters in the long run. With longer blades, booms and motors. There is a guy in the Rave ENV forums who just did a Electric Rave 800. It's very impressive.

Chris

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10-15-2010 10:33 PM  8 years agoPost 18
jones007

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Monterey, CA - USA

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I remember reading an article about a CDI version of a larger OS fuel-injected engine (1.6 or 2.0 I think)the OS-sponsored pilots were flying in plankers. The CDI was supposed to help the engines run cooler with more power by preventing pre-ignition as the engine heated up, and also provided more reliable idle. Sounded like a sweet setup, but I think they speculated on prices around $1k. Not sure how many heli pilots would pay that.

--Kevin

Trex 700N, Trex 600ESP, Trex 500, Trex 450Pro

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10-18-2010 08:56 AM  8 years agoPost 19
Aaron29

rrProfessor

USA

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..

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10-18-2010 07:59 PM  8 years agoPost 20
jones007

rrApprentice

Monterey, CA - USA

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Anyone know if the FI and CDI units improve fuel efficiency? It could be that you could get more power out of a 91 without using more fuel, albeit for a hefty price on the engine, and some more electronic junk to haul around. Only for the die-hards I suppose.

--Kevin

Trex 700N, Trex 600ESP, Trex 500, Trex 450Pro

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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › Wonder if we will see bigger motors.
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