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WhiskeyVictor36(at)aol.co
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 Posted: Fri Apr 15, 2011 7:50 pm Post subject: 2nd Flight! |
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In a message dated 4/15/2011 7:28:22 P.M. Eastern Daylight Time, gtaylor35918(at)roadrunner.com writes:
| Quote: | I have the plane down to roughly about 288, with no BRS.
Greg/All,
The UL weight allowance for a BRS (or any other brand parachute) is 24 lbs. Adding that to 254 equals 278 lbs. maximum empty weight. Since you already weigh in at 288 without the BRS, adding it (maybe 15 or 20 lbs installed) you would be at 303 to 308 lbs. Just doesn't look possible to reduce the weight that much to reach 278.
Homer's original 1985 model FireStar was advertised as "probably needing a parachute to be a legal UL". And that model had the 5 rib wing with .028 " wall thickness leading and trailing spars, 1" dia. aluminum landing gear legs (talk about bending gear legs - hahaha) with plastic wheels and no brakes. A very small wind screen allowed just enough drag to prevent the Rotax 377 35 HP powerplant from exceeding the allowable 63 MPH top speed. I think.
Bill Varnes
Original Kolb FireStar
Audubon NJ
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Sat Apr 16, 2011 3:22 pm Post subject: Re: 2nd Flight! |
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[quote="gtaylor35918(at)roadrunne"]Kolbers,
I appreciate all the info, I have the plane down to roughly about 288, with no BRS. The faa told me I basically had to options, use my firestar to repair one that is currently registered, or get it down to 254 LBS. My biggest worry with flying it as a fat ultralight is if they were to ramp check me and find it overweight what my punishment would be, or how would it affect my private/instrument rating.
The way I see it, you need to strip the fabric off the airplane and take it apart. Weigh the various pieces, and see what you can make go away. Eliminate everything you can do without. Period.
Until you get it down to 245 pounds, you need to keep at it. keep taking heavy bits off. Then recover it using U/L fabric and minimal paint. I suspect that if you came below 260 pounds, you might be able to skate, but you need to get it very, very close. Due to changes in humidity, etc, there are legitimate variables, but I would aim for under 260 if I was concerned about making the scales.
Richard Pike
MKIII N420P (420ldPoops)
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Sun Apr 17, 2011 5:30 am Post subject: 2nd Flight! |
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Richard, Greg, Seems like a lot of work to get the weight down and still not qualify as an ultralight. Why? Speed. The Firestar cruises too fast. The limit under FAR 103 is 55 knots. Do the worksheet from AC 103-7 Appendix 1. Your local FAA guy might not have his scales, but he probably will have a pencil.
Rick Girard
On Sat, Apr 16, 2011 at 6:22 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:
| Quote: | --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>
[quote="gtaylor35918(at)roadrunne"]Kolbers,
I appreciate all the info, I have the plane down to roughly about 288, with no BRS. The faa told me I basically had to options, use my firestar to repair one that is currently registered, or get it down to 254 LBS. My biggest worry with flying it as a fat ultralight is if they were to ramp check me and find it overweight what my punishment would be, or how would it affect my private/instrument rating.
> ---
The way I see it, you need to strip the fabric off the airplane and take it apart. Weigh the various pieces, and see what you can make go away. Eliminate everything you can do without. Period.
Until you get it down to 245 pounds, you need to keep at it. Then recover it using U/L fabric and minimal paint. I suspect that if you came below 260 pounds, you might be able to skate, but you need to get it very, very close. Due to changes in humidity, etc, there are legitimate variables, but I would aim for under 260 if I was concerned about making the scales.
Richard Pike
MKIII N420P (420ldPoops)
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Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
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racerjerry
Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY
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| Posted: Mon Apr 18, 2011 6:39 am Post subject: Re: 2nd Flight! |
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Gtaylor, read AC 103-7 carefully. The lightest soft pack parachute system (non-canister) you can find can buy you a 24 lb allowance. All associated parts and “reinforcement points / fittings†may be claimed. A separate weighing of the parachute system components is not required.
If you are concerned with meeting the airspeed requirements of part 103, look at Appendix 1 & 2 of AC 103-7. Work through the tables and enter data for your U/L. Carry a completed copy of this data with you at all times to demonstrate compliance.
Both Advisory Circular (AC) documents are available on the web at FAA.GOV.
Hope this helps.
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