Airbrakes Pop Out at 115 kts

Is there a 3rd possible outcome or is something always wrong with these
things? ;-)
wrote in message
ups.com...
John,
Have you done the "dime" test?
+ Lift the spoiler cap and slip in 4 or 5 dimes.
+ Close and lock spoilers. If the cap didn't close flush, then the rod
length after the over-center mechanism needs adjustment.
+ If the spoilers did close flush, then you need stronger springs. The
springs on the ends should be about twice as strong as the others.
JJ

I was responding to a post that stated the spoilers
were popping open at 115 knots, but the dime test should
be done every now and then even though no problem is
noted. If the spoiler caps go flush (with dimes in)
then go fly and put her into a 2-G turn (60 degree
bank) and while holding it in the turn, peek out at
both spoilers. If the caps are lifting, increase spring
tension.
JJ

At 19:00 09 May 2005, For Example John Smith wrote:
Is there a 3rd possible outcome or is something always
wrong with these
things? ;-)
wrote in message
oups.com...
John,
Have you done the 'dime' test?
+ Lift the spoiler cap and slip in 4 or 5 dimes.
+ Close and lock spoilers. If the cap didn't close
flush, then the rod
length after the over-center mechanism needs adjustment.
+ If the spoilers did close flush, then you need stronger
springs. The
springs on the ends should be about twice as strong
as the others.
JJ

John Sinclair wrote:
I was responding to a post that stated the spoilers
were popping open at 115 knots, but the dime test should
be done every now and then even though no problem is
noted. If the spoiler caps go flush (with dimes in)
then go fly and put her into a 2-G turn (60 degree
bank) and while holding it in the turn, peek out at
both spoilers. If the caps are lifting, increase spring
tension.

I'm assuming you aren't referring to just the DG 101, so...

Do the dimes go between the spoiler cap and the top of the spoiler blade?

Is there any chance the dimes will fall out and work their way to a
place we don't want them?

What's the best way to increase spring tension? On my ASH 26 E, I put a
couple washers on the posts that didn't seem to be pulling hard enough
to increase the pre-tension there, which has worked so far, but maybe
there is a better/easier way.


--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

At 22:30 09 May 2005, Eric Greenwell wrote:
John Sinclair wrote:
I was responding to a post that stated the spoilers
were popping open at 115 knots, but the dime test
should
be done every now and then even though no problem
is
noted. If the spoiler caps go flush (with dimes in)
then go fly and put her into a 2-G turn (60 degree
bank) and while holding it in the turn, peek out at
both spoilers. If the caps are lifting, increase spring
tension.

I'm assuming you aren't referring to just the DG 101,
so...

Yeah, works on all spoilers.

Do the dimes go between the spoiler cap and the top
of the spoiler blade?

Yes

Is there any chance the dimes will fall out and work
their way to a
place we don't want them?

You don't leave them in, Eric. Just slip them in,
do the test (close and lock) and then remove them.
If one does slip out, it will be in the bottom of the
spoiler box, fish it out.

What's the best way to increase spring tension? On
my ASH 26 E, I put a
couple washers on the posts that didn't seem to be
pulling hard enough
to increase the pre-tension there, which has worked
so far, but maybe
there is a better/easier way.

It has been my observation that adding washers doesn't
increase the spring tension and therefore doesn't solve
the problem. A quick & dirty way to do the job is to
fill all the nooks & crannies of the spring with silicone
calking, let it dry with spoilers unlocked. Worked
on the ASW-20's end springs. Nowadays, the ships come
with stronger end springs. A good hardware store may
have an nice assortment of springs. Take in the old
one to judge by.
JJ
Change 'netto' to 'net' to email me directly

Eric Greenwell
Washington State
USA