EAA KIT Weight & Balance Form

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EAA KIT Weight & Balance Form

Postby pfhoeycfi » Wed Oct 05, 2022 5:12 am

The W&B form that came with the EAA registration kit says that min fuel is calculate using (HP/12) x 6. Is this value, approx 50#, suppose to be used in both the most aft and most fwd table? It would seem to me, I'd want to use zero for the most aft case.

peter
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
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Re: EAA KIT Weight & Balance Form

Postby XenosN42 » Wed Oct 05, 2022 3:51 pm

I used zero gallons/pounds for fuel for the most aft case. That reflects reality, so I think it's more appropriate to use on the W&B.
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Re: EAA KIT Weight & Balance Form

Postby Bryan Cotton » Wed Oct 05, 2022 8:50 pm

My understanding was to do the W&B for most aft case using two standard FAA 170 lb pilots. On my airplane you can't get to zero fuel and be in the envelope. You need 4 gallons.

I think you may find you can do zero fuel when solo, but not two up.

I've enclosed the W&B I submitted for my airworthiness cert. That's all it is - in the real world if you want to make sure you are good at zero fuel you need to run the particular numbers.
Attachments
N191YX W&B 23 April 2022.pdf
(18.24 KiB) Downloaded 218 times
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Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
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Re: EAA KIT Weight & Balance Form

Postby pfhoeycfi » Thu Oct 06, 2022 8:35 am

Bryan Cotton wrote:My understanding was to do the W&B for most aft case using two standard FAA 170 lb pilots. On my airplane you can't get to zero fuel and be in the envelope. You need 4 gallons.

I think you may find you can do zero fuel when solo, but not two up.

I've enclosed the W&B I submitted for my airworthiness cert. That's all it is - in the real world if you want to make sure you are good at zero fuel you need to run the particular numbers.


The turbo and cooler adds alot of weight upfront, the result being with a 170# pilot & 170# passenger mine is still within the aft limit with 0 gallons on board. I will not be flight testing that scenario tho...

Your W&B doc is helpful...

Thanks,

peter
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
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Re: EAA KIT Weight & Balance Form

Postby pfhoeycfi » Thu Oct 06, 2022 8:37 am

XenosN42 wrote:I used zero gallons/pounds for fuel for the most aft case. That reflects reality, so I think it's more appropriate to use on the W&B.


ok great...

thank you,

peter
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
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Re: EAA KIT Weight & Balance Form

Postby Bryan Cotton » Thu Oct 06, 2022 9:41 am

If you want my .xls document, let me know.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: EAA KIT Weight & Balance Form

Postby pfhoeycfi » Thu Oct 06, 2022 1:27 pm

Bryan Cotton wrote:If you want my .xls document, let me know.



sure...

appreciate it...

I'm getting close

peter
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
pfhoeycfi
 
Posts: 384
Joined: Wed Jun 28, 2017 3:45 pm

Re: EAA KIT Weight & Balance Form

Postby Bryan Cotton » Thu Oct 06, 2022 10:18 pm

Here you go! I've also got some calculations for ballast and so on - tweak with your own numbers of course.
Attachments
Waiex 191 W&B for AWC.xls
(21 KiB) Downloaded 220 times
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Bryan Cotton
 
Posts: 5509
Joined: Mon Jul 01, 2013 9:54 pm
Location: C77

Re: EAA KIT Weight & Balance Form

Postby pfhoeycfi » Fri Oct 07, 2022 9:09 am

Bryan Cotton wrote:Here you go! I've also got some calculations for ballast and so on - tweak with your own numbers of course.



great...

thank you,

peter
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
pfhoeycfi
 
Posts: 384
Joined: Wed Jun 28, 2017 3:45 pm


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