A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Soaring
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Ventus C vs B



 
 
Thread Tools Display Modes
  #1  
Old September 9th 03, 06:21 PM
tango4
external usenet poster
 
Posts: n/a
Default Ventus C vs B

Apart from the very sweet looking 17.6 m tips and tail ballast what are the
other differences between the Ventus B and the Ventus C.

Does the C have the same long cockpit as the B ?

I believe the C handles a lot better.

Ian


  #2  
Old September 9th 03, 07:00 PM
Marc Ramsey
external usenet poster
 
Posts: n/a
Default

"tango4" wrote...
Apart from the very sweet looking 17.6 m tips and tail ballast what are

the
other differences between the Ventus B and the Ventus C.


The C has a different root fairing which improves performance and handling
at slow speeds. The trailing edge divebrakes are replaced by conventional
spoilers, which makes it a lot easier to properly seal the flaps.

Does the C have the same long cockpit as the B ?


There are actually C/A and C/B variants. The C/B has the same cockpit as
the B, whereas the C/A has the shorter, narrower cockpit of the A. CMs and
CTs use the C/B fuselage.

I believe the C handles a lot better.


Having owned a B and flown a C a few times, I'd say that, at best, the C
handles slightly better than the B. The C is a bit more stable in the roll
axis (particularly at thermalling speeds), and requires less control force
in roll. Ptich and yaw stability are pretty much the same. The C is
probably easier to land for the uninitiated, but can't match the Bs
outstanding short field landing capability.

Marc


  #3  
Old September 9th 03, 08:53 PM
Stewart Kissel
external usenet poster
 
Posts: n/a
Default

At 18:12 09 September 2003, Tango4 wrote:
Apart from the very sweet looking 17.6 m tips and tail
ballast what are the
other differences between the Ventus B and the Ventus
C.


Marc covered the primary differences, having recently
shopped for a Ventii, there appears to be a significant
price difference between the two(B's and C's). Many
B's have had tail tanks added, and some have also ended
up with the 17.6 tips. Google RAS for some lengthy
B threads, and Al's site has a parallel thread on the
subject as well.
Does the C have the same long cockpit as the B ?

I believe the C handles a lot better.

Ian






  #4  
Old September 9th 03, 10:28 PM
Marc Ramsey
external usenet poster
 
Posts: n/a
Default

"Todd Pattist" wrote..
The C has excellent large dive brakes that produce a steep
over-the-trees descent to the start of your short field,
but I suspect you are right that the flaps of the B provide
a slightly lower energy landing.


The B trailing edge divebrakes create more drag than conventional
divebrakes, plus increase the effective flap angle. This allows one to
maintain a 50 knot or so approach speed at up to a 45 degree angle of
descent. Done right, it's more like landing an HP than a conventional
flapped glider.

Marc


  #5  
Old September 10th 03, 01:08 AM
Mike Borgelt
external usenet poster
 
Posts: n/a
Default

On Tue, 9 Sep 2003 11:00:25 -0700, "Marc Ramsey"
wrote:


Having owned a B and flown a C a few times, I'd say that, at best, the C
handles slightly better than the B. The C is a bit more stable in the roll
axis (particularly at thermalling speeds), and requires less control force
in roll. Ptich and yaw stability are pretty much the same. The C is
probably easier to land for the uninitiated, but can't match the Bs
outstanding short field landing capability.

Marc

I own a C model with A fuselage and have flown several A and B models.

The C model has 3 degrees of dihedral and vs 2 degrees on the A and B
and is more stable in roll at thermalling speeds particularly with the
17.6 meter tips.
The full span flaperons on the C generate much less adverse yaw than
the ailerons on the B greatly reducing workload in turbulent air.

The top surface drives for the flaperons on the C model dramatically
reduce friction and improve linearity in the aileron control circuit
compared to the half baked Schempp excuse for an attempt at the
Glasflugel skew bar drive in the A and B model. With careful
maintenance that friction can be controlled. Winglets on the A or B
(15m) seem to improve aileron handling dramatically. The last A model
I flew had them and was quite pleasant compared to the other A and B
models I've flown.

Mike Borgelt
  #6  
Old September 10th 03, 03:28 AM
Jim Phoenix
external usenet poster
 
Posts: n/a
Default

Todd,

Looking at Mike Newgard's C last weekend I noticed it has the external
aileron drives, I believe he said that arrangement was peculiar to the C.
Does your have the internal geometry drives (like my N3)?

Jim
"Todd Pattist" wrote in message
...
"Marc Ramsey" wrote:

The C has a different root fairing which improves performance and

handling
at slow speeds.


Also makes it much easier to tape (the little things are so
important :-)

There are actually C/A and C/B variants. The C/B has the same cockpit as
the B, whereas the C/A has the shorter, narrower cockpit of the A. CMs

and
CTs use the C/B fuselage.


Surprisingly, the Carl Herrold handicap rates the Ventus C
with the B fuselage (what I own) as performing better (dry)
than the Ventus C/A. It's presumably due to the slightly
higher weight.

Having owned a B and flown a C a few times, I'd say that, at best, the C
handles slightly better than the B.


I've never flown a B, but those who have that I've asked
have all agreed with "slightly better" One who owned a B
felt there was a larger difference that he noticed when he
lost some weight and flew it near the rear CG.

I was also told there was an airfoil difference, but I don't
know if that is true. Can anyone confirm or deny?

The C is a bit more stable in the roll
axis (particularly at thermalling speeds), and requires less control

force
in roll. Ptich and yaw stability are pretty much the same. The C is
probably easier to land for the uninitiated, but can't match the Bs
outstanding short field landing capability.


The C has excellent large dive brakes that produce a steep
over-the-trees descent to the start of your short field,
but I suspect you are right that the flaps of the B provide
a slightly lower energy landing.

I believe some earlier B models cannot be retrofitted to the
17.6 tips.


Todd Pattist - "WH" Ventus C
(Remove DONTSPAMME from address to email reply.)



  #7  
Old September 10th 03, 03:29 AM
Jim Phoenix
external usenet poster
 
Posts: n/a
Default

You answered the question I posed to Todd. I wish my N3 had the top surface
drives.

Jim
"Mike Borgelt" wrote in message
...
On Tue, 9 Sep 2003 11:00:25 -0700, "Marc Ramsey"
wrote:


Having owned a B and flown a C a few times, I'd say that, at best, the C
handles slightly better than the B. The C is a bit more stable in the

roll
axis (particularly at thermalling speeds), and requires less control

force
in roll. Ptich and yaw stability are pretty much the same. The C is
probably easier to land for the uninitiated, but can't match the Bs
outstanding short field landing capability.

Marc

I own a C model with A fuselage and have flown several A and B models.

The C model has 3 degrees of dihedral and vs 2 degrees on the A and B
and is more stable in roll at thermalling speeds particularly with the
17.6 meter tips.
The full span flaperons on the C generate much less adverse yaw than
the ailerons on the B greatly reducing workload in turbulent air.

The top surface drives for the flaperons on the C model dramatically
reduce friction and improve linearity in the aileron control circuit
compared to the half baked Schempp excuse for an attempt at the
Glasflugel skew bar drive in the A and B model. With careful
maintenance that friction can be controlled. Winglets on the A or B
(15m) seem to improve aileron handling dramatically. The last A model
I flew had them and was quite pleasant compared to the other A and B
models I've flown.

Mike Borgelt



 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Self-Riggers and disassembly of wings Stewart Kissel Soaring 11 August 19th 03 02:56 PM
VENTUS 3 in Poland but no LS 10 Michael Soaring 9 July 26th 03 01:54 AM
Is anyone still interested in CuSoft "Polar Explorer" program for PC? Branko Stojkovic Soaring 1 July 26th 03 01:06 AM
L-nav Settings Ventus 2ct-18 Oliver Peters Soaring 4 July 18th 03 04:14 AM


All times are GMT +1. The time now is 05:16 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2004-2023 AviationBanter.
The comments are property of their posters.