Mark, your MiniStick is way overweight - try the .030 motor at about a 9"
loop (18" length of rubber). I'd start with about400 turns and adjust
incidence as needed (many of the planes that I'm familiar with have no
provision for elevator adjustment so I just think of wing post
adjustments as "adding or removing elevator" - I know that's
oversimplifying but that's the kind of guy I am) and then keep adding
turns. You may have to go up from there in rubber size too. I'll try to
attach a couple of emails that recently dealt with overweight MiniSticks
(planes). I have a new MiniStick (MiniSlick design) which is heavy at
0.84g and I hope to fly it Thursday night up in Wisconsin - I will start
with .030 rubber and maybe go up from there. I tested it gingerly in a
low ceiling and needed .030 to get it started thinking of climbing. I
don't know how these guys get things down to 0.43g minimum without helium
though I think part of my problem is in a severely overweight prop.
I looked for the emails I planned to send and couldn't find them -
essentially what they said is that if the plane doesn't climb it needs
more power, either more winds or heavier cross section.
On the Poonker I am relatively sure that it's intended to balance near
the rear wing post (keep in mind that the stab is lifting, too, on many
of these, letting you set the CG further back), though I don't have my
readable plans here at the computer.
Good luck on finding some activity in your area, it seems to me that I
hear occasionally about activity around Indianapolis, I'm still looking
for some activity in Northwest Indiana so I can get a buddy of mine
indoctrinated. By all means come on over to Champaign in April as there
will be a bunch of very knowledgeable flyers there and it is an awesome
site.
Also, can you give me the URL for A2Z where you bought this thin rubber -
I've been having a bit of trouble stripping the thinner stuff ?
LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust
On Tue, 04 Mar 2008 01:33:28 -0000 "mcrabby311" <mcrabby311_at_yahoo.com>
writes:
> Has anyone found a "funny farm" with a high ceiling? My wife is ready
>
> to have me commited...so let me know! But I do have a few questions
>
> in the meantime:
> I made a purchase from A2Z and wow...ordered on 2-21, received 2-23,
>
> unbelievable. I now have some teflon bearing for Penny size, and
> Mini
> Stik size. Also some prop shaft bearings for my Mini Stik attempts,
> I
> now have some contest rubber, stripped to size, just to see what it
>
> was like, uhh, some .018, and .030, and .070,( cant do the rubber
> stripper yet) and a 10/1 winder(weeee). So, commit me now.
> 1.How do you store the rubber? Airtight best?
> 2.I can't get a ministik to climb. I have a Poonker, it weighs 1.5
>
> grams(with rubber). Used the .018 rubber. Long slow ride DOWN! Too
> heavy? I centered the wing in the balance point WITHOUT the wing on
> (like the Double Whammy instructios state to do) But the drawing I
> have for the Poonker has the wing mounted forward of that balance
> point. What gives?
> 3.How do you decide whether to add "elevator" or wing incidence?
> 4.Are the "wing incidence" measurements on the plans I'm finding
> tried and true, then add elevator?(stab incidence?)
> I'm not sure if my problem is trimming or weigh, or both. Im not
> having much luck "manipulating" the finished plane. It breaks. But I
>
> think Im not understanding the elevator/stab, or tail, however you
> say it...and maybe the wing incidence should be relatively
> constant?
> May need a white coat and rubber room soon!
> Mark
> Greenwood, Indiana
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust
Received on Tue Mar 04 2008 - 08:40:56 CET
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