REFLECTOR: Seat Screws

[Alex Balic]

Yea, the stainless screws deform easily. Use grade 5/8 they will not bend
under any normal circumstances.

 

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Brooke Wolf
Sent: Sunday, January 08, 2012 10:24 AM
To: reflector at tvbf.org
Subject: Re: REFLECTOR: Seat Screws

 

Chris

 

When I was building I got wind there might be a historical problem with the
seat hinge screws.  I thought I would nip that problem in the bud by using
1/4 20 machine screws.  Well, after very limited use, I noted that the
screws attaching the seat back to the hinge had loosened.  I tried to
tighten them up but was unable.  The screws had bent!  I was a bit
surprised, but I guess us 200 pounders do put a significant strain on that
mechanism.  My original 1/4 20 were stainless machine screws.  Stainless
seems to be quite "bendable".   I went to Home Depot and got some grade 5 or
grade 8 (can't remember) bolts and installed them.  I haven't had the seat
apart yet to check for bolt distortion, but I see no sign of it and they are
not loose.  FWIW

 

Brooke

 

 

From: Chris Barber <cbarber at texasattorney.net>

Date: January 7, 2012 2:30:28 PM EST

To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>

Subject: REFLECTOR: Seat Screws

Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>

 

I was wondering if others had had trouble with the seat hinge screws
breaking and/or distorting.  I have had to replace twisted and broken screws
a few times now.  Ok, while I am by no means a small man (5'10 at 200 lbs) I
am not so big that I would think I would be stressing these parts.

 

One thought is that I have been standing on the brakes a lot doing engine
run ups and testing, but still it seems odd.

 

I have now  added extra screws by tapping out additional screw holes.  I am
close enough to hopefully successful flight that I wanted to address this
gremlin.

 

I had the tech out to test my transponder and it has a problem so he took it
to take a look (really nice and helpful guy for those in SE Texas). Next
step, squawk party....

 

Chris



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