NTSB urges grounding of all Zodiac CH-601XL's

150flivver wrote:
On Apr 14, 8:36 pm, Brian Whatcott wrote:
wrote:
http://www.cnn.com/2009/US/04/14/nts...ane/index.html
Designed by Zenair.
Just saw it on CNN.
Karl
Ouch! Control flutter and reduced sick force per G at high g

Well, this is homebuilders heaven - so I suppose we could use a
reminder that balancing control surfaces, specially tail feathers,
can help stop the onset of flutter, that loose control wires
and rods can encourage.....

Brian W

How do you balance ailerons that aren't hinged?


You've got me: how DO the ailerons work on a CH-601XL?

Brian W

Brian Whatcott wrote:
150flivver wrote:
On Apr 14, 8:36 pm, Brian Whatcott wrote:
wrote:
http://www.cnn.com/2009/US/04/14/nts...ane/index.html
Designed by Zenair.
Just saw it on CNN.
Karl
Ouch! Control flutter and reduced sick force per G at high g

Well, this is homebuilders heaven - so I suppose we could use a
reminder that balancing control surfaces, specially tail feathers,
can help stop the onset of flutter, that loose control wires
and rods can encourage.....

Brian W

How do you balance ailerons that aren't hinged?


You've got me: how DO the ailerons work on a CH-601XL?

Brian W

Go here and scroll about half way done the page.

But as I mentioned most if not all the accident aircraft had regular
hinges.

Gig 601Xl Builder wrote:


You've got me: how DO the ailerons work on a CH-601XL?

Brian W

Go here and scroll about half way done the page.

But as I mentioned most if not all the accident aircraft had regular
hinges.


I've flown a 701 with the hingless hinges.

The ailerons felt very stiff in flight.

I can well believe that set-up would prevent flutter -
or at least move the resonant response way up there.

cavelamb wrote:


I've flown a 701 with the hingless hinges.

The ailerons felt very stiff in flight.

I can well believe that set-up would prevent flutter -
or at least move the resonant response way up there.

A 701?

Hingless hinges can be done on the 6xx series planes, but the 701
(according to the plans) uses hinges. Not to say that someone couldn't
do it on a 701, but it would seem to be a diversion from the standard
designe that would be of dubious value.

--
Frank Stutzman
Bonanza N494B "Hula Girl"
Boise, ID

Frank Stutzman wrote:
cavelamb wrote:

I've flown a 701 with the hingless hinges.

The ailerons felt very stiff in flight.

I can well believe that set-up would prevent flutter -
or at least move the resonant response way up there.

A 701?

Hingless hinges can be done on the 6xx series planes, but the 701
(according to the plans) uses hinges. Not to say that someone couldn't
do it on a 701, but it would seem to be a diversion from the standard
designe that would be of dubious value.

Sorry, bad typo Frank, it was a LOW wing 601HD.