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Yamaha 4 stroke on Kolb

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albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Tue Feb 16, 2010 10:05 am Post subject: Yamaha 4 stroke on Kolb

Has the fellow that was doing the yamaha 4 stroke in his Kolb MKIII made any progress? I'm very curious as to how he made out? I see some guys are starting to use them in Gyro's.

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

Jason Omelchuck

Joined: 07 May 2009
Posts: 120
Location: Portland Oregon

Posted: Wed Feb 17, 2010 8:31 am Post subject: Re: Yamaha 4 stroke on Kolb

Hello Tony,



I am the fellow with the Yamaha on my MKIII.  Last summer I put about 40 hours on it and am happy with the way it ran.  Right now my airplane is in the shop getting its new steel landing gear (upgrade not accident).  I should get the legs back from the heat treater on Friday.  Last summer I was just feeling the engine out and never ventured further than 100 miles from home.  This summer I hope to expand my horizons and actually get some regional traveling done.  Gyroplanes is where this engine conversion started.  I think my engine and another 2 place Dominator were the first to get conversions from a guy in Colorado who manufactured the first one.  The Dominator now has about 60 hours.  The guy in Colorado is now in full production of this conversion and I believe that there will be 5 or so more gyroplanes flying this summer with Yamahas.  I will keep you all updated on the results of my 2nd season of flying the Yamaha.



Jason

MKIII Yamaha powered

Portland, OR

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Feb 17, 2010 8:48 am Post subject: Yamaha 4 stroke on Kolb

The guy in Colorado is now in full production of this conversion and I 

believe that there will be 5 or so more gyroplanes flying this summer with 

Yamahas.  I will keep you all updated on the results of my 2nd season of 

flying the Yamaha.



Jason

MKIII Yamaha powered



Jason O/Gang:



Does this guy have a web page?



john hauck

mkIII

Titus, Alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Wed Feb 17, 2010 8:59 am Post subject: Re: Yamaha 4 stroke on Kolb

Jason,



I have also fabricated steel landing gear legs, but I am having no luck finding a place in my area to have them heat treated.  Each place I checked with locally said 36 inches is longer than they can do.



Does anyone know a good place where I can have 36" gear legs heat treated?



Thanks,



Gene Z

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Feb 17, 2010 9:13 am Post subject: Yamaha 4 stroke on Kolb

Does anyone know a good place where I can have 36" gear legs heat treated?



Thanks,



Gene Z

Gene Z/Gang:



Do google search for "metal heat treating".



May have to UPS the legs to the plant.  That is what I have done in the 

past.



My normal plant was an hour up the road, but they shut down.  Haven't needed 

any heat treating for a good while now, knock on wood.



john hauck

mkIII

Titus, Alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Jason Omelchuck

Joined: 07 May 2009
Posts: 120
Location: Portland Oregon

Posted: Wed Feb 17, 2010 11:22 am Post subject: Re: Yamaha 4 stroke on Kolb

No, he does not have a website, below is his information and a link to the topic on the rotary wing forum.  He is doing this out of passion, not business.  We will see how long he can sustain it.



Regards

Jason

http://www.rotaryforum.com/forum/showthread.php?t=16100&highlight=yamaha 

The contact info for information and plans for the gearbox adapter: 

e-mail: razorkisss(at)aol.com 

Phone:(719) 499-2378 

His name is Todd

elleryweld(at)aol.com
Guest

Posted: Wed Feb 17, 2010 12:52 pm Post subject: Yamaha 4 stroke on Kolb

Have you got any pics of this creacher? that you can share with us 

 

     Ellery Batchelder Jr.

 

 

 

   --

Jason Omelchuck

Joined: 07 May 2009
Posts: 120
Location: Portland Oregon

Posted: Wed Feb 17, 2010 1:57 pm Post subject: Re: Yamaha 4 stroke on Kolb

I had a video up on U-tube but I took it down because I had changed some things.  When I pull it out of the hanger in a couple of weeks, I take another one and post it.



Jason

MKIII Yamaha powered

Portland, OR

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Feb 17, 2010 2:47 pm Post subject: Yamaha 4 stroke on Kolb

No, he does not have a website, below is his information and a link to the 

topic on the rotary wing forum.  He is doing this out of passion, not 

business.  We will see how long he can sustain it.



Regards

Jason



Jason O/Gang:



Is this the same/similar engine they are running in the Legend Race Cars?



Good looking engine.  Yamaha makes good stuff.



Hard to beat reliability of Japanese dirt bike four strokes, but be tough to 

get one to turn a prop without a super effiective torsional vibration 

dampening system.



john hauck

mkIII

Titus, Alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Feb 17, 2010 2:54 pm Post subject: Yamaha 4 stroke on Kolb

Hard to beat reliability of Japanese dirt bike four strokes, but be tough 

to

get one to turn a prop without a super effiective torsional vibration

dampening system.



john hauck





Again, I was referring to what I ride and not what Jason is using to power 

his mkIII.



I have a 400 cc Suzuki single cylinder 4 valve.  Rev limiter is set at the 

factory at 10,500 rpm.  That's a bunch of rpm for a thumper that pulls like 

a tractor at low rpms.  It is a 2002 year model, very low maintenance and 

super reliability.



john hauck

mkIII

Titus, Alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

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