Today's Message Index:
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1. 01:37 AM - Re: Sun-N-Fun's 2nd Annual Great Kolb Hanger Flying Event (PATRICK LADD)
2. 04:32 AM - Re: Sun-N-Fun's 2nd Annual Great Kolb Hanger Flying Event (Airgriff2@aol.com)
3. 11:38 AM - Re: Re: prop testing (Richard Swiderwski)
4. 02:16 PM - Re: Re: prop testing (N27SB@aol.com)
5. 08:40 PM - Fat Ultralight to Sport Category (David L. Bigelow)
Message 1
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| Subject: | Re: Sun-N-Fun's 2nd Annual Great Kolb Hanger Flying Event |
--> Kolb-List message posted by: "PATRICK LADD" <pj.ladd@btinternet.com>
I'll try and cut my DVD down in size some more.>>
Hey John,
get it sorted and burn some copies. Bet you could sell them and Kolb should
distribute them to show what their a/c can do.
Cheers
See you there
Pat
--
Message 2
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| Subject: | Re: Sun-N-Fun's 2nd Annual Great Kolb Hanger Flying Event |
--> Kolb-List message posted by: Airgriff2@aol.com
> Richard writes
> > We need to select a nite that is best for most people. I would
> suggest we do not compete with the evening pyrotechnic flight program
> which
> I assume is taking place again this year & I obviously don't know the
> day if
> it is. If the group is set on going out to eat, then it should not be
> on
> that nite either.
>
Hi gang The evening air show is Saturday 4/16 at 8pm. Hope
this helps in your schedualing?
Bob Griffin
Message 3
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| Subject: | Re: prop testing |
--> Kolb-List message posted by: "Richard Swiderwski" <rswiderski@earthlink.net>
Hans,
I was reading over some old email I saved & this is really
interesting. I am looking for an inflight adjustable prop for my Kolb
SlingShot with a 90-100hp turbo 3-cyl 4-stroke. I can't seem to find a
three blade that is light enough or affordable enough beyond the Ivo UL &
Medium. Did you notice any higher end cruise performance differences
between the UL & Medium? Are there any other options that you are aware of?
Thanks,
Richard Swiderski
-----Original Message-----
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Hans van Alphen
Subject: Kolb-List: Re: prop testing
--> Kolb-List message posted by: "Hans van Alphen" <HVA@Bellsouth.net>
>From: jerb <ulflyer@airmail.net>
>Subject: Kolb-List: How's Powerfin Prop Compare
>
>--> Kolb-List message posted by: jerb <ulflyer@airmail.net>
>
>Has any one recently had a chance to compare performance of Powerfin prop
>back to back with any other brands like TPI, IVO, and Warp. What was the
>conclusion? What plane, engine, brand of prop, # blades. Looking for good
>objective feedback.
>jerb
>
>
Hey Jerb and All,
Just finished my test flights with the inflight electric Ivo props, both the
3 blade ultralight and 2 and 3 blade medium models and compared them to my
existing 68" 3 blade PowerFin - F.
These test were on my fourstroke BMW with a Rotax C gearbox 3:1. about 70
hp.
I made a chart plotting the rpm. and speed to get a real feel for comparison
of efficiency.
The PowerFin is the most efficient, but only by a small margin and is not
inflight adjustable unless you want to spend $2,800.-
The Ivo 68" 3 blade ultralight prop is surprisingly close to the PowerFin
and only $860.- for inflight adjustable. But most important, it is
absolutely smooooth... at all rpm's.
Next I tried the Ivo Medium 2 blade hoping for more efficiency with the
wider blade, but it was not, almost identical, but a lot more vibrations, to
the point where it was uncomfortable.
The Ivo Medium 3 blade was definitely smoother, but not as smooth as the
ultralight model and about the same efficiency.
The clear winner for my situation is the Ivo ultralight 68" 3 blade inflight
adjustable.
Now I can actually get to 84 mph at 5200 rpm. and cruise very nice at 4800
rpm at 76 mph. and burn 3 gallons per hour.
Between Climb pitch and Cruise pitch I see a 26 mph increase in speed....
It is like adding another gear.
All this testing was done at 850 LB gross weight in my Mark III Xtra.
The inflight adjustable prop really makes sense with a fourstroke engine,
unless you have 100 hp and power to burn.
Hans van Alphen
Mark III Xtra
BMW powered
78 hours
Message 4
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| Subject: | Re: prop testing |
--> Kolb-List message posted by: N27SB@aol.com
In a message dated 3/26/2005 2:38:52 PM Eastern Standard Time,
rswiderski@earthlink.net writes:
> --> Kolb-List message posted by: "Richard Swiderwski" <
> rswiderski@earthlink.net>
>
> Hans,
>
> I was reading over some old email I saved &this is really
> interesting. I am looking for an inflight adjustable prop for my Kolb
> SlingShot with a 90-100hp turbo 3-cyl 4-stroke. I can't seem to find a
> three blade that is light enough or affordable enough
Richard, Kiev is working on an in flight, but I don't think it is going to be
cheap, the standard 3 blade is $695
steve
Message 5
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| Subject: | Fat Ultralight to Sport Category |
--> Kolb-List message posted by: "David L. Bigelow" <dlbigelow@verizon.net>
Been reading the posts regarding conversion to Sports category, and am a bit confused!
I have a single seat Firestar 2 that I'm flying as a fat ultralight.
I want to eventually convert it to Sport category. I built it, and do have a
private pilot (plus commercial and ATP) rating. Here are the questions I hope
someone will answer:
1. I want to do all the maintenance, plus the annual inspection. Do I have to
take the 16 hour course, or does having a PP license exempt me from that requirement?
2. When I register the FS in the sport category, does it become an experimental
amateur built aircraft in the sport category, or something else?
3. Part 103 operational restrictions are pretty loose (altitude restrictions,
etc.). Experimental Aircraft restrictions under Part 91 are more restrictive
(IE 500 feet from nearest person, structure, etc). Do Light Experimental Sport
Aircraft have their own set of operational restrictions, or do those in Part
91 apply?
Thanks in Advance,
Dave Bigelow
FS2
Kamuela, Hawaii
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