CG limits for Ventus 2bx?

I finally got some good main and tail wheel weights today for my V2bx
using the weighing procedure set out in my maintenance manual. I
computed the CG for both the empty and 'flying' configurations, but
was unable to compute the CG as a percentage of aft CG limit, as I
couldn't find anything in my documentation that unambiguously shows
the CG range and aft limit. There is a table on page 6.4.3 of my
manual that starts at 20.08in/510mm and ends at 27.56in/700mm, but its
not clear if these are the forward and aft limits or just convenient
graph endpoints.

Anyone care to tell me what I'm doing wrong here?

TIA,

Frank (TA)

Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

On Mar 28, 7:52*am, Coucked wrote:
Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)

On Mar 28, 9:31*am, Frank wrote:
On Mar 28, 7:52*am, Coucked wrote:

Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)

Frank,

what about the official data sheet at the faa website? My friend/AI
Roger
pulled that up when we did the w&b on my 19 last fall. Don't ask me
exactly
where it is since I searched fruitlessly to find that sheet again, but
I know
it's in there someplace!

-- Matt

The FAA TCDS for the V2b is he
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/133e98b92a385fdb862570c80050abd1/$FILE/G04CE.pdf
and it does list the forward and aft CG range. I don't know how
different the "x" variant is from the 2b.

-John

On Mar 28, 1:49 pm, mattm wrote:
what about the official data sheet at the faa website? My friend/AI
Roger
pulled that up when we did the w&b on my 19 last fall. Don't ask me
exactly
where it is since I searched fruitlessly to find that sheet again, but
I know
it's in there someplace!

-- Matt

On Mar 28, 9:31*am, Frank wrote:
On Mar 28, 7:52*am, Coucked wrote:

Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)

If it's type certified, you might try looking here if you haven't
already: http://rgl.faa.gov/Regulatory_and_Gu...e?OpenFrameSet

They usually have all the cg limits, various stations (pilot, baggage,
water ballast, ballast, etc), etc listed in the document.

WD

On Mar 28, 3:07*pm, Whiskey Delta wrote:
On Mar 28, 9:31*am, Frank wrote:

On Mar 28, 7:52*am, Coucked wrote:

Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)

If it's type certified, you might try looking here if you haven't
already: *http://rgl.faa.gov/Regulatory_and_Gu...keModel.nsf/Ma...

They usually have all the cg limits, various stations (pilot, baggage,
water ballast, ballast, etc), etc listed in the document.

WD

oh, I see John beat me to it... sorry for the double post.

On Mar 28, 3:07*pm, Whiskey Delta wrote:
On Mar 28, 9:31*am, Frank wrote:

On Mar 28, 7:52*am, Coucked wrote:

Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)

If it's type certified, you might try looking here if you haven't
already: *http://rgl.faa.gov/Regulatory_and_Gu...keModel.nsf/Ma...

They usually have all the cg limits, various stations (pilot, baggage,
water ballast, ballast, etc), etc listed in the document.

WD


Thanks - that did it!

Frank (TA)

On Mar 28, 12:26*pm, Frank wrote:

Thanks - that did it!

Frank (TA)

I don't see how it is possible, or legal, for the flight handbook of
any modern glider not to include the forward and aft CG limits.

Schleicher provides a graphical depiction of the complete mass and CG
envelope. As discussed here previously the limitations may not be as
simple as a single forward, and a single aft, limit.

When you received the additional information did it agree with what
was already published in the handbook?

Andy (GY)

Frank wrote:
On Mar 28, 7:52 am, Coucked wrote:
Frank,

I have a spread sheet I can send you that only requires you put your
moment arms in and your weights and will calculate the rest. Set up
for
and ASW-20.

Dave,

Thanks, but this doesn't help for a V2bx unless I know the
corresponding forward/aft CG limits ;-).

Frank (TA)
Those are obtained from the BGA datasheets - just go to the BGA
technical section.

Bruce

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