altojazz35(at)earthlink.n
Guest
|
 Posted: Tue Aug 15, 2017 4:02 am Post subject: Kolb-List Digest: 2 Msgs - 08/14/17 |
 |
|
Good points.... we are still in the testing phase
The wing does have a gap cover that covers a lot more than the real
Firestar.
Can't cover the motor since they really like to have open air flow. Heat.
The airplane has way more thrust than needed. I was testing some 3 cells
which the motor is not rated for. The motor suggests 4 to 6 cells. The
motor is much more efficient with 4 cells and can take off easily with a
little over 1/2 throttle. The 3 cell required full throttle. This model
could easily aero tow a large glider with 4 cells. Can't imagine what 6
cells would do.
My dad immediately thought the prop was the wrong fit for the airplane due
to the sound of the prop/motor but I'm not sold on that idea just yet. The
motor may have an issue that could be mimicking stalled prop tips sounds.
Would take too long to explain but you'll just have to trust me on this.
I have some things to do to the airplane before any more flying can take
place. I'll post videos as the flight test continue. A good thing is the
model didn't require VG's on the horizontal stab. My big Firestar fly's
much better with them and there was no indication of elevator stall on the
model.
Time: 01:42:17 AM PST US
From: Bill Berle <victorbravo(at)sbcglobal.net>
Subject: Re: Model Firestar
Michael, congratulations on a beautiful model of your family aircraft!
'bout
time there was an R/C Kolb!
I have a humble suggestion for the model. It looks like an electric motor
has been
installed where a gas engine was originally designed tot be. IMHO There
needs
to be a streamlined cover over the engine and wing center section. Even on
the video you can hear the propeller beating against the dead and separated
air
on the top center section of the wing. Also put small vortex generators
above
the leading edges of the wings within the diameter of the propeller to
guarantee
attached airflow into the prop. That buzzing noise is telling you that the
propeller is not making smooth strong thrust.
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kolb-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
