[NSRCA-discussion] Focus 1.5

[Pete Cosky]

Good info.....Thanks Rusty

I'll have to archive this in the event I get another Focus....sold mine in 
the fall.

----- Original Message ----- 
From: "Boyd E. "Rusty" Dose" <rdose at wi.rr.com>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, March 05, 2007 10:17
Subject: Re: [NSRCA-discussion] Focus 1.5


> Pete and other Focus owners,
>
> I have had the unique opportunity to have Dave Guerin personally assist
> withe trimming of (3) of my Focus models including (2) Focus I's and my 
> most
> recent Focus II Arch and I flew in Phoenix.  Dave's process begins with
> measuring the CG, ensuring that at a minimum, it is at least just in front
> of the wing tube.  Then we fly it and confirm.
>
> In Phoenix, Dave was present for the initial 9 flights.  He with uncanny
> accuracy, based on the small amount of elevator mix it seemed we needed
> (about 4%/2% with 13 degrees of elevator travel) Dave said it needed 1 and
> 1/4 ounces MORE nose weight...I added and it helped complete the 
> grooviness
> and tracking.  Remember there are hundreds and hundreds of these models 
> and
> pilots who have won every class at every level in the US.
>
> Based on the 1/4 in front of the wing tube CG, you should have less about
> 0 - 4% pitch based on 12-13 degrees of elevator travel.  If you have more,
> it is TAIL HEAVY!!!  Additionally, my model ended up with 3%/4% rudder
> aileron mix.  With YS DZ 160 and APC 18.1 x 10 prop we used 1.5% of down
> elevator mix beginning offset @ 50% throttle and 3.5% of right rudder mix
> offset @ 50% throttle to fine tune the up and down lines.
>
> This process took about 4 flights after I set the up EXACTLY as Dave 
> details
> in the instruction manual.  I set the bench incidence @ + .30 degrees for
> wings and a 0 degree stab with the tail post 1" off the work bench.
>
> The model (piloted by Arch Stafford) won Masters in Phoenix with a total 
> of
> 10 flights, 4 of those flights contest flights.  An excellent example of
> following the set-up directions beginning with a proper CG with a capable
> model and skilled pilot.
>
>
> Rusty Dose
> Team Futaba
> Team YS Performance
> ----- Original Message ----- 
> From: "Pete Cosky" <pcosky at comcast.net>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Monday, March 05, 2007 8:32 PM
> Subject: Re: [NSRCA-discussion] Focus 1.5
>
>
>> My battery and all servos were as far back as possible to preclude tail
>> weight.
>>
>> ----- Original Message ----- 
>> From: "Randy Forbus" <rforbus at hotmail.com>
>> To: <nsrca-discussion at lists.nsrca.org>
>> Sent: Monday, March 05, 2007 9:25
>> Subject: Re: [NSRCA-discussion] Focus 1.5
>>
>>
>>> Ok thanks I checked mine at 1/4 in front of the wing tube seems on the
>>> nose
>>> heavy side
>>>
>>>
>>>>From: "Pete Cosky" <pcosky at comcast.net>
>>>>Reply-To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>>>>To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>>>>Subject: Re: [NSRCA-discussion] Focus 1.5
>>>>Date: Mon, 5 Mar 2007 21:22:41 -0500
>>>>
>>>>Randy,
>>>>
>>>> >From the FWIW file, I set the CG on mine at the wing tube and ran
>>>> >through
>>>>the trimming chart to get it dialed in. Arch can attest to how it flew. 
>>>>I
>>>>want to say the CG wound up at the leading edge of the wing tube.
>>>>
>>>>Pete
>>>>
>>>>----- Original Message -----
>>>>From: "Randy Forbus" <rforbus at hotmail.com>
>>>>To: <nsrca-discussion at lists.nsrca.org>
>>>>Sent: Monday, March 05, 2007 9:09
>>>>Subject: Re: [NSRCA-discussion] Focus 1.5
>>>>
>>>>
>>>> > Well I think it does the advanced sequence just fine to till I get to
>>>>the
>>>> > snap parts, it will come im sure, thats whats great about all of this
>>>>get
>>>> > it
>>>> > dialed in just like a race car
>>>> >
>>>> >
>>>> >>From: "Pete Cosky" <pcosky at comcast.net>
>>>> >>Reply-To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>>>> >>To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>>>> >>Subject: Re: [NSRCA-discussion] Focus 1.5
>>>> >>Date: Mon, 5 Mar 2007 21:00:42 -0500
>>>> >>
>>>> >>Arch,
>>>> >>
>>>> >>I had a 9151 on the rudder in my Focus 1.5 and you had no issues with
>>>> >>it
>>>> >>doing the entire Masters sequence. If he isn't getting a clean snap I
>>>> >>would
>>>> >>have to agree with the CG theory.
>>>> >>
>>>> >>Didn't you sell your Focus II a couple years ago?
>>>> >>
>>>> >>Pete
>>>>
>>>>
>>>>_______________________________________________
>>>>NSRCA-discussion mailing list
>>>>NSRCA-discussion at lists.nsrca.org
>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
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>>
>>
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