Today's Message Index:
----------------------
1. 06:25 AM - Geo engine talk (Dave)
2. 07:42 AM - Re: gearboxoil (lance miller)
3. 02:45 PM - Re: Geo engine talk (JC)
4. 02:45 PM - Re: Engine choices. (Michel Verheughe)
5. 08:02 PM - Setting prop to revs (QSS)
6. 09:13 PM - Re: Setting prop to revs (John Anderson)
7. 11:09 PM - Re: Setting prop to revs (QSS)
Message 1
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--> Kitfox-List message posted by: "Dave" <dave@cfisher.com>
Hi guys,
There was some talk of a GEO install by Bradley the other week. I came
across this website and thought it might be some use to anyone that looking
at a Geo.
http://nessaaircraft.net/index.htm
http://nessaaircraft.net/enginesFrame1Source1.htm
"Why not the 3 cylinder. This engine has harmonic problems, it roc-n-rolls
at low end. Example; you will need to install a heavy flywheel; the 4 lb
flex plate from the automatic transmission will fail on you. If this lets go
at 5000 rpm it will cause damage. Even after separation if nothing else you
will poop your pants. You will not know what caused the entire racket, you
may decide to force land and because it is going to be a bad day, now you
also damaged the aircraft and if you did not get physical damage yourself,
your mind will! This will lead to lock of confidence in the installation.
One of my experiences, not the pooping."
Seems he has some good knowledge of this engine, and it looks like he is a
Transport Canada amatuerbuilt inspector of soem sort.
Should be an invaluabel asset to anyone look at a GEO install
http://nessaaircraft.net/builderFrame1Source1.htm
Good Reading,
Dave
Message 2
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Message 3
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| Subject: | Re: Geo engine talk |
--> Kitfox-List message posted by: "JC" <jc@arcom.com.au>
I came across his site after I had come accross the harmonics prob and had
decided to fit the 1.3 , 4 cyl, with gear drive, fitting up now and so far
looking good in my Aeropup in OZ his site is very informative and backed up
my decision, if it goe's really well I may make it a factory supplied
option.
rgds 2 all
John Cotton
Aeropup Aircarft Works
www.aeropup.com
----- Original Message -----
Sent: Sunday, July 23, 2006 10:51 PM
> --> Kitfox-List message posted by: "Dave" <dave@cfisher.com>
>
> Hi guys,
>
> There was some talk of a GEO install by Bradley the other week. I came
> across this website and thought it might be some use to anyone that
> looking at a Geo.
> http://nessaaircraft.net/index.htm
>
> http://nessaaircraft.net/enginesFrame1Source1.htm
> "Why not the 3 cylinder. This engine has harmonic problems, it roc-n-rolls
> at low end. Example; you will need to install a heavy flywheel; the 4 lb
> flex plate from the automatic transmission will fail on you. If this lets
> go at 5000 rpm it will cause damage. Even after separation if nothing else
> you will poop your pants. You will not know what caused the entire racket,
> you may decide to force land and because it is going to be a bad day, now
> you also damaged the aircraft and if you did not get physical damage
> yourself, your mind will! This will lead to lock of confidence in the
> installation. One of my experiences, not the pooping."
>
> Seems he has some good knowledge of this engine, and it looks like he is a
> Transport Canada amatuerbuilt inspector of soem sort.
> Should be an invaluabel asset to anyone look at a GEO install
> http://nessaaircraft.net/builderFrame1Source1.htm
>
>
> Good Reading,
>
> Dave
>
>
> http://www.matronics.com/Navigator?Kitfox-List
> http://wiki.matronics.com
>
>
>
Message 4
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| Subject: | Re: Engine choices. |
--> Kitfox-List message posted by: Michel Verheughe <michel@online.no>
On Jul 18, 2006, at 12:24 PM, Dave G. wrote:
> I am not planning to change engines, I will overhaul my 582 and fly it
> but recent threads have me wondering what engines a M. IV will accept.
I have a Denney's model 3 with a 582 and I changed it for a Jabiru
2200, Dave. Like Dee and Lynn, I am very pleased with it. But both
Rotax engines are also fine engines. As Bradley says, the HKS is also a
fine engine, but it will give you less power than the 582. The Jabiru
will give you about the same power under take-off and more power under
cruise. The 912 will give you more power overall. But the engine is
heavier and you will probably need to work your CG differently.
Cheers,
Michel
Message 5
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| Subject: | Setting prop to revs |
Hi guys, I have my prop bolted on and will be experimenting with pitch
soon but as I am unsure what my max static revs should be I am a bit
concerned. Can some body with an NSI non turbo and ground adjustable
prop tell me what revs I should expect to see for best results. I was
getting 4700 rpm flat out but feel I should be seeing over 5500 rpm. The
prop I have put on is a 72 inch 3 blade composite which when installed
into the hub comes down to 70inch.
Regards
Graeme Toft
Message 6
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| Subject: | Setting prop to revs |
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Message 7
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| Subject: | Re: Setting prop to revs |
Hi John, thanks for the advice. I've been following the threads going
back and forth between yourself and others with your own plane and being
at the same point myself with engine info requirements Im really close
to flying. The problem I have is that I was sent an NSI data sheet on
engine performance and in it the advice was that take off engine revs
should be around 6200. I shook my head in disbelieve at these figures
and asked a mate who overhauled my engine what he thought and he agreed
that the figures were high. I was wondering if the figures quoted are
for the NSI engine with the CAP system. I dont know if that would make
any difference or not but 6200 seem very high and more a kin to the 2
stroke rev range than a four stroke. Figures quoted in the NSI EA 81
OPERATING LIMITS are as follows.
Idle RPM 1350-1400
Cruise RPM 3200-4500
Take off RPM 6200
Max Continuous RPM 5800
Never exceed RPM 6500
Regards
Graeme
----- Original Message -----
From: John Anderson
To: kitfox-list@matronics.com
Sent: Monday, July 24, 2006 2:09 PM
Subject: RE: Kitfox-List: Setting prop to revs
--> Kitfox-List message posted by: "John Anderson"
Fo a start Graeme, if you get 5000 static, that will certinly get you
flying safely. At 4700 your'e very near top of the tq curve. John A.
-------------------------------------------------------------------------
---
Hi guys, I have my prop bolted on and will be experimenting with
pitch soon but as I am unsure what my max static revs should be I am a
bit concerned. Can some body with an NSI non turbo and ground adjustable
prop tell me what revs I should expect to see for best results. I was
getting 4700 rpm flat out but feel I should be seeing over 5500 rpm. The
prop I have put on is a 72 inch 3 blade composite which when installed
into the hub comes down to 70inch.
Regards
Graeme Toft
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21/07/2006
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