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Cuyuna ULII-02 fs 2si 460-F40

 
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Dana



Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

PostPosted: Thu Sep 20, 2012 6:49 pm    Post subject: Cuyuna ULII-02 fs 2si 460-F40 Reply with quote

I have a ULII-02 on my Ultrastar, and it runs great. I was thinking of
swapping it out for a 447 for better performance, but never found the time
to make new motor mounts, etc. I just came across a low time 2si 460-F40
for sale locally for a good price, but I hear bad things about 2si vs.
original Cuyunas.

The Cuyuna 430 was rated 30HP at 5500 rpm per an old Cuyuna brochure I
have. Supposedly the ULII-02 is the same HP, but at a higher rpm? I get
around 6400 static with a 2:1 redrive and a 50x30 2 blade prop, inflight
max rpm is a bit lower. The 2si is supposed to be 40hp at 6500 rpm (there
is also a 460-F35 which is rated 35hp at 6000 rpm).

The idea of the extra HP is attractive, but at what downside? Any comments?

-Dana
--
In general, liberalism consists of A & B getting together to see what they
can make C do for poor old D.


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John Hauck



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

PostPosted: Thu Sep 20, 2012 7:15 pm    Post subject: Cuyuna ULII-02 fs 2si 460-F40 Reply with quote

The Cuyuna 430 was rated 30HP at 5500 rpm per an old Cuyuna
brochure I have. Supposedly the ULII-02 is the same HP, but
at a higher rpm?
-Dana

My 1984 ULII02 was 35 HP.

john h
mkIII
Rock House, OR


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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama
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PostPosted: Fri Sep 21, 2012 3:46 am    Post subject: Cuyuna ULII-02 fs 2si 460-F40 Reply with quote

You look bad ass flying around with the ULII-02 ! Smile On Sep 20, 2012 7:51 PM, "Dana Hague" <d-m-hague(at)comcast.net (d-m-hague(at)comcast.net)> wrote:[quote] --> Kolb-List message posted by: Dana Hague <d-m-hague(at)comcast.net (d-m-hague(at)comcast.net)>

I have a ULII-02 on my Ultrastar, and it runs great.  I was thinking of swapping it out for a 447 for better performance, but never found the time to make new motor mounts, etc.  I just came across a low time 2si 460-F40 for sale locally for a good price, but I hear bad things about 2si vs. original Cuyunas.

The Cuyuna 430 was rated 30HP at 5500 rpm per an old Cuyuna brochure I have.  Supposedly the ULII-02 is the same HP, but at a higher rpm?  I get around 6400 static with a 2:1 redrive and a 50x30 2 blade prop, inflight max rpm is a bit lower.  The 2si is supposed to be 40hp at 6500 rpm (there is also a 460-F35 which is rated 35hp at 6000 rpm).

The idea of the extra HP is attractive, but at what downside?  Any comments?

-Dana
--
In general, liberalism consists of A & B getting together to see what they can make C do for poor old D.


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Tom McCarthy



Joined: 24 Feb 2011
Posts: 15
Location: 61C

PostPosted: Fri Sep 21, 2012 5:08 am    Post subject: Cuyuna ULII-02 fs 2si 460-F40 Reply with quote

Dana,

I have extensive experience with all of the motors you listed. I ran a ul2-02 on my ultrastar for many trouble free hours before selling, and later bought a 2SI for my Firestar, and had nothing but problems. Plainly put, they are two different motors. Without going into too many details, I have on my shelf (1) 2si 460 f-35, and (2) 460 f-40's, all running, but would not put them on anything I own. They are for sale if anyone is interested. I might however like to find a nice UL2-02 to put my gear box on and put on my Firestar some day. It has a better power band than the 377, and feels smoother, and uses slightly less fuel. Feel free to PM me for more info.
Tom McCarthy

Firestar 441TM
Slingshot 863GB
Zenith 601HD 541TM [quote][b]


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