 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Goodone
Joined: 13 Sep 2008
Posts: 49
|
 Posted: Sat Sep 13, 2008 12:38 pm Post subject: Firestar II Center of Gravity? |
 |
|
Would there be any Center-of-Gravity (c.g.) concerns with a Firestar II powered by a Rotax 503+"C" Gear Box+ Rotax Intake Silencer+3 Blade Warp Drive Prop? I had a good friend that had an accident in a Firestar II that might well be explained if this rather heavy power plant system would result in an aft c.g. He was a rather slim fellow probably weighing around 160 lbs. I would appreciate any information that you might provide.
| | - 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 |
|
|
|
| Back to top |
|
 |
N111KX (Kip)
Joined: 27 Jan 2006
Posts: 96
Location: Atlanta, GA
|
| Posted: Sat Sep 13, 2008 5:37 pm Post subject: Re: Firestar II Center of Gravity? |
|
|
As every Firestar is different, it's impossible to say exactly if the aircraft was out of CG. But, I have found that the FS tends to be an "aft" CG biased airplane more than forward with pilot weights of less than 180lbs or so. I can say that I have operated my FS aft of the factory suggested CG range as I am even lighter than your friend. That said, I have yet to find any dangerous flight characteristics in this CG area, even with spin entry and recovery. Again, the model in question may have been mis-rigged, or any number of other discrepancies to contribute to the accident.
Kip
| | - 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 |
|
_________________
Kip
Firestar II, N111KX
Waiex, N111YX
Quickie 1, N111QX
Atlanta |
|
| Back to top |
|
|
gaman(at)att.net
Guest
|
| Posted: Sun Sep 14, 2008 10:29 am Post subject: Firestar II Center of Gravity? |
|
|
My FS-2 with b box and pull start and my 170#s required some ballast to get into the recommended cg range.I think it could be possible with that combination of equipment and pilot to have an issue. Mine required 15# in the nose to feel right, although many on this list have had success aerodynamically trimming their Kolbs to fly well without the addition of ballast. My 2 cents worth.
---
| | - 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 |
|
|
|
| Back to top |
|
|
lucien
Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM
|
| Posted: Sun Sep 14, 2008 11:34 am Post subject: Re: Firestar II Center of Gravity? |
|
|
| Goodone wrote: | | Would there be any Center-of-Gravity (c.g.) concerns with a Firestar II powered by a Rotax 503+"C" Gear Box+ Rotax Intake Silencer+3 Blade Warp Drive Prop? I had a good friend that had an accident in a Firestar II that might well be explained if this rather heavy power plant system would result in an aft c.g. He was a rather slim fellow probably weighing around 160 lbs. I would appreciate any information that you might provide. |
My old FS II was setup exactly like that (well with a clutch but also without silencers on the engine) and the builder put 10lbs of ballast in the nose to get the CG to come out right.
He flew it for a while without the ballast; with him (large guy about 210 lbs) and full gas it was right at the aft limit. He didn't like the way it flew and put the ballast in to correct it.
Monster performance with that huge prop tho... well worth the additional weight....
LS
| | - 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 |
|
_________________
LS
Titan II SS |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
