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Center Console

 
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paul.the.aviator(at)gmail
Guest
PostPosted: Sat Oct 06, 2007 3:37 pm    Post subject: Center Console Reply with quote
Hi all,

I seem to recall quite some time ago that someone (perhaps Miles or
Nigel) had done some analysis on how much the center tunnel can be
safely reduced in size without affecting the structural integrity of
the aircraft. I believe that it was with reference to the tail
dragger conversion, however I would assume that its equally applicable
to the Trigear.

Can anyone point me towards that discussion.

Thanks, Paul

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grahamsingleton(at)btinte
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PostPosted: Sat Oct 06, 2007 3:55 pm    Post subject: Center Console Reply with quote
Paul
for reasons which I'm sure you know, I don't think its wise to take any
of it away. It helps to stop the main spar breaking your back in a
crash. It also forms a nice elbow rest.
Graham

Paul McAllister wrote:
Quote:


Hi all,

I seem to recall quite some time ago that someone (perhaps Miles or
Nigel) had done some analysis on how much the center tunnel can be
safely reduced in size without affecting the structural integrity of
the aircraft. I believe that it was with reference to the tail
dragger conversion, however I would assume that its equally applicable
to the Trigear.

Can anyone point me towards that discussion.

Thanks, Paul






--
Graham Singleton

Tel: +441629820187
Mob: +447739582005

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TELEDYNMCS(at)aol.com
Guest
PostPosted: Sun Oct 07, 2007 4:19 am    Post subject: Center console Reply with quote
In a message dated 10/7/2007 2:58:43 AM Eastern Daylight Time, europa-list(at)matronics.com writes:
Quote:
Can anyone point me towards that discussion.

Hi Paul,

I cut my center console down. I was told at the time to keep it at least 2" above the forward portion of the seat bottom where it turns down into the foot area. I did put some reinforcing plies inside the tunnel in this area. So far, 118 hours, with some of those hours spent yanking and banking, and no sign of any problems. Contact me off list if you'd like some photos.

Hope it helps!

Regards,

John Lawton
Whitwell, TN (TN89)
N245E - Flying



See what's new [quote][b]

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mx(at)jcliff.waitrose.com
Guest
PostPosted: Mon Oct 08, 2007 12:17 am    Post subject: Center console Reply with quote
Sometime around 2000 I enquired of PFA Engineering about the possibility of
cutting down the centre tunnel (on a Classic) in the vertical plane at the
same time as carrying out a taildragger conversion.

I was informally told they might not be too happy about that because they
weren't sure the front fuselage would be strong enough to cope with a very
heavy landing with engine now hung a long way in front of the attachment
point for the front wheels (the deeper the tunnel is the stronger a beam it
makes, vertically).

Evidently a Europa had suffered a wrinkled front fuselage some time before
that in a heavy arrival incident.

Much more in-service experience since then, of course.

John Cliff
#0259

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g-iani(at)ntlworld.com
Guest
PostPosted: Mon Oct 08, 2007 2:34 am    Post subject: Center Console Reply with quote
The centre tunnel has been reduced or reshaped in a number of aircraft.
I produced PFA mod number 10601 in 2002 and it is the only one approved
"all of type" by the PFA. This has not been converted into a standard
as it is complex. It modified the centre tunnel and the panel to match
and moved the location of the fuel cock. I have attached a PDF of the
drawing to give you some idea of what was done.

Barry Mellor, who did the original stress calculations on the aircraft,
did the stress calculations. I have machine readable copies of these if
they would be of help.

Ian Rickard #505 G-IANI XS Trigear
Europa Club Mods Rep (Trigear)
e-mail mods(at)europaclub.org.uk
or direct g-iani(at)ntlworld.com

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ami(at)mcfadyean.freeserv
Guest
PostPosted: Mon Oct 08, 2007 10:22 am    Post subject: Center Console Reply with quote
Ian,
Is that Mod with the underside of the fus skin cut out for the monowheel?
Obviously not if it is to work with the trigear. But if the a/c has been
converted from mono to TD, then it may have a big structural hole in the
underside that invalidates this Mod!

Duncan McF.
---

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g-iani(at)ntlworld.com
Guest
PostPosted: Tue Oct 09, 2007 1:56 am    Post subject: Center Console Reply with quote
Duncan

The mod was designed for my aircraft which was new and a Trigear from
scratch. The existing floor (The area which would be cut out for the
mono) was left in place and reinforced with 3mm foam and 2 (or 3 I
forget) plies of Bid. My understanding from Barry Mellors was that his
calculations assumed the hole was there. So he was not interested in
any structural strength contribution the new floor might make.

Ian Rickard #505 G-IANI XS Trigear
Europa Club Mods Rep (Trigear)
e-mail mods(at)europaclub.org.uk
or direct g-iani(at)ntlworld.com

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