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PostPosted: Sun Nov 03, 2013 5:01 pm 
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The nice thing about this one is it tracks your weight as you burn fuel.

Keep in mind, the gross weight for the R model is 2,450
http://www.hillflyingclub.com/wb/n643sp.htm

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PostPosted: Sun Nov 03, 2013 5:40 pm 
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At A2A´s 172R there is no separate baggage compartment simulated. I always used baggage area #1 for my w&b calculations with the A2A 172R, is that correct?

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Keep in mind, the gross weight for the R model is 2,450
http://www.hillflyingclub.com/wb/n643sp.htm


And how to change the basic empty weight in that online calculator? The given 1684.06lbs does not fit with our 1639lbs empty weight of the A2A product!

Kind regards

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PostPosted: Sun Nov 03, 2013 8:35 pm 
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Yes, baggage area 1. Regarding the empty weight, just deduct 50lbs from the final calculation.

Scott.

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PostPosted: Sun Nov 03, 2013 10:07 pm 
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Scott, I've got a question, in the aircraft cfg file it shows the max weight as 2550 instead of 2450. Why? It also shows a empty weight of 1650. Again Why?
Mark

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PostPosted: Mon Nov 04, 2013 5:46 am 
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n454mw wrote:
Scott, I've got a question, in the aircraft cfg file it shows the max weight as 2550 instead of 2450. Why? It also shows a empty weight of 1650. Again Why?
Mark

I know you said Scott... however, allow me take a shot at this.

As far as the aircraft.cfg: you essentially have "two airplanes in one" with this A2A Trainer. Basically, you change to the "S" prop and you get an increase of 100lbs for max weights (Normal Category) over the "R". Cessna came out with a kit that allows certain serial numbers of the "R" to be modified with this "S" prop. Part of the kit is new Wt & Bal info (which, for one, shows the change in Max Weight).

Max Wt for the C172R = 2450lbs
Max Wt for the C172S = 2550lbs (or modified "R"... however you wish to view it)

I'd imagine for our (FSX) purposes, A2A considered it expedient just to have the one cfg, because if you did have two, switching props in the Shop, with a corresponding change in GW, would require a reload of the plane (no?).

n454mw wrote:
It also shows a empty weight of 1650. Again Why?

The 1639lb figure I found as a "general" Basic Empty Weight from an "R" manual (I saw an example slightly different for the "S"). This is not going to be the "as equipped from the factory" figure; for that you will need to go the specific POH for that plane -- a.k.a. the Airplane Flight Manual.

"As delivered" the A2A C172 appears to have a Basic Empty Weight of 1665lbs. I obtained this figure from the Shop, emptying fuel, using full oil and setting the pilot to 100lbs (so you obviously subtract out this 100lb tare weight). Oil is close to 2 lbs per quart.

So for our (simulated) purposes, the link Scott has provided (for a C172S) will work quite nicely. The Basic Empty Weight is very close. The important thing to remember (as Scott said) when using the link he provided, is to remember for the "R", your GW is 2450lbs.

For you techno-dweebs (like me)... yeah, there appears to be a slight change in the front slope of the Wt & Bal Envelope between the "R" and the "S"... certainly "not a factor" for our simulation purposes.

The big thing i.e. the takeaway from all this... what's important is that you understand how to calculate Weight & Balance, and how extremely important it is that you comply with those numbers when flying RW. You can ruin a perfectly good day by not complying with the Weight and / or the C.G. limitations.

You also have to understand, each and every airplane is different. I don't care if I was at a flight school with a hundred "identical" C172 "S" models... for every plane I step in, I will have done a Wt & Bal. calc using the numbers for that specific plane.

-Rob

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PostPosted: Mon Nov 04, 2013 6:29 pm 
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Thanks Rob, that makes perfect sense!
Mark

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PostPosted: Tue Nov 05, 2013 1:29 am 
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Scott - A2A wrote:
Yes, baggage area 1. Regarding the empty weight, just deduct 50lbs from the final calculation.

Scott.

45 lbs Scott.


David

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PostPosted: Sat Nov 09, 2013 2:53 am 
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Thanks for info.

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Last edited by Katharina94 on Fri Mar 14, 2014 11:23 pm, edited 2 times in total.

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PostPosted: Wed Nov 13, 2013 4:51 am 
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For android users, you might also like to take a look at this.

I use their checklist application, it is very nice.

https://play.google.com/store/apps/deta ... andbalance


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PostPosted: Mon Nov 25, 2013 8:06 am 
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I have recently adjusted some Cessna 172 weight and balance calculator I found on the internet. It is a 263kb XLS file:
Image

EDIT: Link.


Last edited by pcykoria on Tue Nov 26, 2013 5:13 pm, edited 1 time in total.

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PostPosted: Mon Nov 25, 2013 3:39 pm 
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Can you share a link to this file, please? Thanks!

Sent from my GT-I9295 using Tapatalk

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PostPosted: Mon Nov 25, 2013 3:46 pm 
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Fabo wrote:
For android users, you might also like to take a look at this.

I use their checklist application, it is very nice.

https://play.google.com/store/apps/deta ... andbalance


Fabo,

Thanks for the headsup, mate! That's just an amazing tool I've missed somehow...

Sent from my GT-I9295 using Tapatalk

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PostPosted: Tue Nov 26, 2013 11:57 am 
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Hi,
So what are now the correct values for our A2A 172R? Empty weight, max weight and max cargo ?

Gesendet von meinem GT-I9100 mit Tapatalk

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PostPosted: Tue Nov 26, 2013 5:14 pm 
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simurqq wrote:
Can you share a link to this file, please? Thanks!

Sent from my GT-I9295 using Tapatalk


The link was/is under the picture - just click on it.
I have added a regular one too.


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PostPosted: Thu Nov 28, 2013 6:03 am 
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pcykoria wrote:
simurqq wrote:
Can you share a link to this file, please? Thanks!

Sent from my GT-I9295 using Tapatalk


The link was/is under the picture - just click on it.
I have added a regular one too.


Gotcha... Thanks!
Just to clarify: I guess the "Oil" cell requires input in pounds, not quarts. So, judging from this specification, 8 quarts of oil = 2 US gal = 14.88 pounds. Can you confirm?

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