Kolb-List Digest Archive

Thu 10/02/08


Total Messages Posted: 7



Today's Message Index:
----------------------
 
     1. 07:45 AM - Re: Platypus Hop (David Lucas)
     2. 05:47 PM - HKS Kolb Twinstar (robcannon)
     3. 06:15 PM - Re: HKS Kolb Twinstar (robert bean)
     4. 07:11 PM - Re: HKS Kolb Twinstar (ropermike)
     5. 08:43 PM - Re: Check your carb floats!! (JetPilot)
     6. 08:49 PM - Re: VG for the little guys (JetPilot)
     7. 09:10 PM - Re: Platypus Hop (JetPilot)
 
 
 


Message 1


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    Time: 07:45:37 AM PST US
    Subject: Re: Platypus Hop
    From: "David Lucas" <d_a_lucas@hotmail.com>
    > Sorry you feel that way, Don't worry Ed. Good debate is what this is all about. Got about 1000 hrs in Cessna and similar types and understand the limitations of the Vane type stall warning systems. The stall warning can certainly go off in turbulence, but that's when the airflow change due to that turbulence is in the same direction , for an instant, as that of an approaching stall situation. So the system is working 'as advertised' ! Also got several hundred C206 hours' at all weights and configurations and have seen low indicated airspeed such as in the short field T/Off of Landing scenario, but with one exception, have never had 'no indicated airspeed' unless I was taxying or stopped ! I fully agree that the A of A indicators are the way to go, but something must be wrong to be able to fly with no indicated airspeed. Blocked Pitot tube for example. That was the 'exception', I had it taking off on a one way downhill strip and found out later that a wasp had decided to build his mud nest in the pitot tube = Flight with no indicated airspeed. Flew out just on familiar attitude and power settings, feel etc, but that was the exception, not the rule. > Fly with a missionary or bush pilot sometime Got some time there. 3,500 + hours jungle flying in Papua New Guinea. Always had some airspeed indication whilst airborne. Ed, something is wrong if you have 'no airspeed' indication if flight. Even the old 206 workhorse would show airspeed from about 20 knots. Can't relate to the Kolb yet, perhaps some others can educate me there. Take care and Fly safe ! David. Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7141#207141


    Message 2


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    Time: 05:47:24 PM PST US
    Subject: HKS Kolb Twinstar
    From: "robcannon" <leecannon@telus.net>
    I flew my Twinstar this week for the first time . I spent last winter installing an hks engine, building a new fuel tank, wiring etc. The twinstar / hks combo seems good so far. I have spent alot of time to get cht/egt/prop pitch all where they should be, and I am almost done. Looks like I will end up with around 1000'/min. climb, and gobs of cruise power(solo) In level flight when I add full power it very quickly will exceed vne. It is the 3:47 gearbox , 66" four blade "F" model powerfin set at 12.5 degrees at the tip. cheers, Rob Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7200#207200


    Message 3


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    Time: 06:15:56 PM PST US
    From: robert bean <slyck@frontiernet.net>
    Subject: Re: HKS Kolb Twinstar
    Here's an attaboy for the positive report. Let us know where you are located. BB do not archive On 2, Oct 2008, at 8:46 PM, robcannon wrote: > > I flew my Twinstar this week for the first time . I spent last > winter installing an hks engine, building a new fuel tank, wiring etc. > The twinstar / hks combo seems good so far. I have spent alot > of time to get cht/egt/prop pitch all where they should be, and I > am almost done. Looks like I will end up with around 1000'/min. > climb, and gobs of cruise power(solo) In level flight when I add > full power it very quickly will exceed vne. It is the 3:47 > gearbox , 66" four blade "F" model powerfin set at 12.5 degrees at > the tip. > cheers, Rob > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p 7200#207200 > >


    Message 4


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    Time: 07:11:54 PM PST US
    Subject: Re: HKS Kolb Twinstar
    From: "ropermike" <ropermike2002@yahoo.com>
    Rob, I have a Twinstar MkII. What was the HKS weight? What was on your plane before the HKS and how does the HKS compare? Did you need to modify your airframe much? I have a 503 and have often dreamed of having a 4-stroke. Thanks in advance!.........Mike -------- The next best thing to playing and winning is playing and losing!...Mike Hillger Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7207#207207


    Message 5


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    Time: 08:43:16 PM PST US
    Subject: Re: Check your carb floats!!
    From: "JetPilot" <orcabonita@hotmail.com>
    GrantR, I checked the carburetor floats on my Rotax 912-S as I said I would, and I have the beginning of the same condition you describe [Shocked] The " Paint " or whatever it is they use to coat the floats with is just starting to bubble and peel on ONE out of the four floats... There was no debris coming loose in the carburetor bowl YET, but it was well on its way. I could easily break off some pieces of this paint like material with my finger that had separated, and was well on its way to falling off by itself. My floats are about 2 years old, and as far as I know have never been used with ethanol. I have also NEVER used carb cleaner, or starter fluid, or anything in these carbs... My bowls are always so clean when I take them off I could drink wine out of them :) I have no idea what caused this to happen, but I will be replacing all the floats in the engine as if one has begun this process of shedding its covering, the rest are probably not far behind ! Attached is a picture of the bad float, its a bit hard to see, but look around the edges of the float where the paint is starting to bubble up. Thanks for the warning Grant, it probably saved me a nasty surprise ! Mike -------- &quot;NO FEAR&quot; - If you have no fear you did not go as fast as you could have !!! Kolb MK-III Xtra, 912-S Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7212#207212 Attachments: http://forums.matronics.com//files/float_400.jpg


    Message 6


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    Time: 08:49:32 PM PST US
    Subject: Re: VG for the little guys
    From: "JetPilot" <orcabonita@hotmail.com>
    If you are not sure about using VG's, put them on with double sided automobile trim tape and try them out... That way you can use mineral spirits to get them off if you want and no harm done. Make sure you put the VG's on exactly per the instructions, position and angle are CRITICAL for them to work well. Mike -------- &quot;NO FEAR&quot; - If you have no fear you did not go as fast as you could have !!! Kolb MK-III Xtra, 912-S Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7214#207214


    Message 7


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    Time: 09:10:45 PM PST US
    Subject: Re: Platypus Hop
    From: "JetPilot" <orcabonita@hotmail.com>
    Vic, I have to give you the same advice John H is giving you on this. If you are taxiing fast enough for the plane to fly, you are asking for disaster. The little hops can get much higher and out of control very quickly... There is a very good chance you will find yourself not in a hop any more and actually flying much to high to simply chop the power and let it come down like a feather. It all changes once you get higher !!! Pull the power and keep that pitch attitude higher off the ground, and you will stall and come down like a ton of bricks. BTW, the Kolb MK III Xtra actually pitches UP if you chop the power, which makes it that much harder if you have gotten higher than a couple feet. I am not trying to rain on your parade, it feels great and easy to hop a couple of feet in ground effect, but this is a setup for disaster if you are not ready to fly. If you have decided to teach yourself to fly this way, then I hope you have the skill to learn to fly without damaging yourself or totaling your airplane. If you are under the illusion that you will just continue to do crow hops and that they wont turn into anything more, you are probably in for a big surprise. There are plenty of guys around that can teach you to fly your MK III Xtra. If you have previous flight time, it wont take you long to learn to fly a your MK III Xtra, it will be easy. Even just a couple hours in the air in a MK III Xtra will make all the difference in the world in your ability to solo in your plane. It will be well worth whatever trouble you have to go to to get instruction and do this the right way. You will make very little progress in your flying if you are rebuilding your airplane for the next year. Mike -------- &quot;NO FEAR&quot; - If you have no fear you did not go as fast as you could have !!! Kolb MK-III Xtra, 912-S Read this topic online here: http://forums.matronics.com/viewtopic.php?p 7216#207216




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