Today's Message Index:
----------------------
1. 03:37 AM - Kolb list Prop Balancer (ElleryWeld@aol.com)
2. 10:06 AM - Saturday Morning Balloons (Richard Pike)
3. 11:14 AM - Follow up to FS 1 prop pitch & lean mixture problem (Thom Riddle)
4. 12:05 PM - Re: Follow up to FS 1 prop pitch & lean mixture problem (lucien)
5. 12:27 PM - Re: Re: Follow up to FS 1 prop pitch & lean mixture problem (Richard Pike)
6. 03:57 PM - Re: Radiator needed (Southern Reflections)
7. 08:26 PM - Nose Cone (Scott Mac.)
8. 08:47 PM - Toy Hauler for MK III Xtra (justin.a.hawkins)
9. 11:17 PM - Re: Off To Oshkosh (Ed Chmielewski)
Message 1
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| Subject: | Kolb list Prop Balancer |
This is the Prop Balancer I built and it works like this the brass piece
has a tapered end inside it to center it on the balancing base Pin insert the
brass slug into your Prop and then set it on the balancing pin on the base,
sitting on your bench use a 6 inch precision scale to measure from the bench
to a known point on the Prop blade tip, then rotate your next blade to that
same point that you measured from on the first blade etc., for each blade
I sand the end of the blade to get a good balance I hope this helps anyone
with Vibration Problems
if you dont have a Lathe to make your own I am willing to help anyone on the
list at cost of materials
Ellery in Maine N447EB Original Firestar
**************************************
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| Subject: | Saturday Morning Balloons |
This morning Ed & I got in a little dawn patrol flight, every year Kingsport has
a hot air balloon event at the end of Fun Fest, here's some pictures from it.
Richard Pike
MKIII N420P (420ldPoops)
PS - Tried to post this earlier, but since I didn't give it a subject name, (duh)
it never showed up. Probably will tomorrow...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125093#125093
Attachments:
http://forums.matronics.com//files/p1050458_large_150.jpg
http://forums.matronics.com//files/p1050561_large_414.jpg
http://forums.matronics.com//files/p1050565_large_235.jpg
http://forums.matronics.com//files/p1050567_large_483.jpg
Message 3
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| Subject: | Follow up to FS 1 prop pitch & lean mixture problem |
Today, I flew a bit to see how the movement of the mixture clip down to riches
position was doing and the EGTs were up to 1200+ again. Perhaps different atmospheric
conditions was the cause. At any rate, I then increased the pitch of
the prop but apparently a bit too much because I am getting about 6250 rpm WOT
level flight. BUT the EGTs are down below 1100 during cruise and the CHTs are
up a bit.
The bad news is that now the engine will not hold a particular rpm, especially
below 5500 rpm. I've read about what causes this but can't remember where it was
nor what to do about it. I have a big flight planned for tomorrow so I'm deferring
the next step until after this flight.
I'll take the carb home after tomorrow's flight and check out all the jets etc
to make sure they are the correct ones. I'm betting that the needle jet is leaner
than it should be.
I don't plan to decrease the prop pitch until I find the real problem and fix it.
If the jets are all the right number and the o-rings, seals, and float levels
are good. I'm not sure what to do next. Any other ideas or resources for curing
the rpm instability problem? I sure hope I can get this nearly new 447 to
run as good as my old "worn out" 377.
--------
Thom in Buffalo
N197BG FS1/447
--------------------
"Blind respect for authority is the greatest enemy of truth."
Albert Einstein
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125097#125097
Message 4
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| Subject: | Re: Follow up to FS 1 prop pitch & lean mixture problem |
Thom Riddle wrote:
> Today, I flew a bit to see how the movement of the mixture clip down to riches
position was doing and the EGTs were up to 1200+ again. Perhaps different atmospheric
conditions was the cause. At any rate, I then increased the pitch of
the prop but apparently a bit too much because I am getting about 6250 rpm WOT
level flight. BUT the EGTs are down below 1100 during cruise and the CHTs are
up a bit.
>
> The bad news is that now the engine will not hold a particular rpm, especially
below 5500 rpm. I've read about what causes this but can't remember where it
was nor what to do about it. I have a big flight planned for tomorrow so I'm
deferring the next step until after this flight.
>
> I'll take the carb home after tomorrow's flight and check out all the jets etc
to make sure they are the correct ones. I'm betting that the needle jet is leaner
than it should be.
>
> I don't plan to decrease the prop pitch until I find the real problem and fix
it. If the jets are all the right number and the o-rings, seals, and float levels
are good. I'm not sure what to do next. Any other ideas or resources for
curing the rpm instability problem? I sure hope I can get this nearly new 447
to run as good as my old "worn out" 377.
Did you say you raised the jet needle or lowered it? If you raised it, the midrange
EGT's should have gone down, not up.
My 447 single carb on my trike always wandered a bit in the 4500 to 5500 rpm range
and I never was able to really cure it. My carb had all the stock jets in
it for sea level and my altitude was basically sea level as well. I did try raising
the needle a notch on the guess that it was lean, but that actually caused
it to 4-stroke intermittently so I was actually about right before then ;).
My suggestion would be to reset everything back to the Rotax recommended jetting
for your altitude/temp, reset your pitch for just bumping redline at WOT, straight
and level. And then go from there.
That's what I had to do with my trike when I monkeyed with it and that pretty much
got me back in the ballpark.
Then you can start suspecting the EGT gauges or looking for other problems... But
I'd go back to baseline on the jetting/propping first... That's always worked
for me...
Their jetting recommendations are virtually spot on for pretty much every condition
you can think of. I moved my FS II from sea level to 7000' MSL. I did the
jet calculations on the chart and installed the new ones (158 mains to 148) and
it was spot on..... A little rich again now in the summer, but thats what the
chart says as well (I need 145's right now really)....
LS
--------
LS
FS II
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125100#125100
Message 5
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| Subject: | Re: Follow up to FS 1 prop pitch & lean mixture problem |
Just to throw a little chaos into the mix...
After many hours, the jet needle will wear down a bit right in the area
where you normally position the throttle from bouncing off the needle jet.
And the engine will gradually get slightly richer. If the number coding at
the top of the needle looks worn away, then there is a good chance that the
business area is also worn.
Richard Pike
MKIII N420P (420ldPoops)
----- Original Message -----
From: "lucien" <lstavenhagen@hotmail.com>
Sent: Saturday, July 21, 2007 3:04 PM
Subject: Kolb-List: Re: Follow up to FS 1 prop pitch & lean mixture problem
>
>
> Thom Riddle wrote:
>> Today, I flew a bit to see how the movement of the mixture clip down to
>> riches position was doing and the EGTs were up to 1200+ again. Perhaps
>> different atmospheric conditions was the cause. At any rate, I then
>> increased the pitch of the prop but apparently a bit too much because I
>> am getting about 6250 rpm WOT level flight. BUT the EGTs are down below
>> 1100 during cruise and the CHTs are up a bit.
>>
>> The bad news is that now the engine will not hold a particular rpm,
>> especially below 5500 rpm. I've read about what causes this but can't
>> remember where it was nor what to do about it. I have a big flight
>> planned for tomorrow so I'm deferring the next step until after this
>> flight.
>>
>> I'll take the carb home after tomorrow's flight and check out all the
>> jets etc to make sure they are the correct ones. I'm betting that the
>> needle jet is leaner than it should be.
>>
>> I don't plan to decrease the prop pitch until I find the real problem and
>> fix it. If the jets are all the right number and the o-rings, seals, and
>> float levels are good. I'm not sure what to do next. Any other ideas or
>> resources for curing the rpm instability problem? I sure hope I can get
>> this nearly new 447 to run as good as my old "worn out" 377.
>
>
> Did you say you raised the jet needle or lowered it? If you raised it, the
> midrange EGT's should have gone down, not up.
>
> My 447 single carb on my trike always wandered a bit in the 4500 to 5500
> rpm range and I never was able to really cure it. My carb had all the
> stock jets in it for sea level and my altitude was basically sea level as
> well. I did try raising the needle a notch on the guess that it was lean,
> but that actually caused it to 4-stroke intermittently so I was actually
> about right before then ;).
>
> My suggestion would be to reset everything back to the Rotax recommended
> jetting for your altitude/temp, reset your pitch for just bumping redline
> at WOT, straight and level. And then go from there.
> That's what I had to do with my trike when I monkeyed with it and that
> pretty much got me back in the ballpark.
> Then you can start suspecting the EGT gauges or looking for other
> problems... But I'd go back to baseline on the jetting/propping first...
> That's always worked for me...
>
> Their jetting recommendations are virtually spot on for pretty much every
> condition you can think of. I moved my FS II from sea level to 7000' MSL.
> I did the jet calculations on the chart and installed the new ones (158
> mains to 148) and it was spot on..... A little rich again now in the
> summer, but thats what the chart says as well (I need 145's right now
> really)....
>
> LS
>
> --------
> LS
> FS II
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=125100#125100
>
>
>
Message 6
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| Subject: | Re: Radiator needed |
$500.oo Joe N101HD 601XL
----- Original Message -----
From: Malcolmbru@aol.com
To: kolb-list@matronics.com
Sent: Friday, July 20, 2007 6:58 PM
Subject: Re: Kolb-List: Radiator needed
what did that cost you joe? mal ps I will be at sea base all week
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Message 7
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I'm looking to replace the nose cone on my Mk II.
Would the nose cone from the Mk IIIC fit my Mk II?
--------
Scott Mac.
MK II
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125144#125144
Message 8
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| Subject: | Toy Hauler for MK III Xtra |
Hi guys,
I've watched this forum for a while, but never posted. I have a quick question
for you. I plan on buying a Mk III Xtra within the next year, once I find
a good one. I also have to buy a fifth wheel trailer for my work (MWD engineer).
I want to be able to fit the plane in the trailer, so I guess I just need
to know the width at the wingtips and say 5' and 7' from the tips, if anyone
knows it. I'm looking at these 2 models, but have a feeling it will only fit
in the bigger version:
[url]http://www.forestriverinc.com/nd/floorplanview.asp?name=4&page=worknp&series=5thWheels
and the larger one:
[url]http://www.forestriverinc.com/nd/floorplanview.asp?name=7&page=worknp&series=5thWheels
any help is greatly appriciated.
Thanks guys.[/url]
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=125148#125148
Message 9
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| Subject: | Re: Off To Oshkosh |
Rick/All,
Please post a link to pics like this in the future. It really
hamstrings those of us stuck with dial-up service.
Thanx,
Ed in JXN
----- Original Message -----
From: Richard & Martha Neilsen
To: kolb-list@matronics.com
Sent: Friday, July 20, 2007 10:32 PM
Subject: Kolb-List: Off To Oshkosh
Due to the recent change of reduction drive on my VW powered MKIIIC I
decided to trailer my plane to Scott Trask's in Iron Mountain. MI and
fly in to Oshkosh from there. I got busy and finished up my trailer and
loaded it up for the first time today. The attached photo is the plane
loaded with one of the clam shell doors open. Note I have removed the
trailer wheels for loading. I will be posting the trailer on George
Alexander web site when I get back. I will be heading out Sunday with
the trailer/plane and flying into Oshkosh on Monday.
Rick Neilsen
Redrive VW Powered MKIIIC
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