Today's Message Index:
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1. 12:13 PM - [ Rob Ray ] : New Email List Photo Share Available! (Email List Photo Shares)
2. 11:42 PM - RV-6/6A Trivia-Wing Bellcrank (DEAN PSIROPOULOS)
Message 1
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| Subject: | [ Rob Ray ] : New Email List Photo Share Available! |
A new Email List Photo Share is available:
Poster: Rob Ray <smokyray@yahoo.com>
Lists: Rocket-List,RV-List,RV3-List,RV4-List,RV6-List,RV7-List,RV8-List,RV9-List,RV10-List
Subject: Bigger Tires
http://www.matronics.com/photoshare/smokyray@yahoo.com.10.27.2007/index.html
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o Main Photo Share Index
http://www.matronics.com/photoshare
o Submitting a Photo Share
If you wish to submit a Photo Share of your own, please include the
following information along with your email message and files:
1) Email List or Lists that they are related to:
2) Your Full Name:
3) Your Email Address:
4) One line Subject description:
5) Multi-line, multi-paragraph description of topic:
6) One-line Description of each photo or file:
Email the information above and your files and photos to:
pictures@matronics.com
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Message 2
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| Subject: | RV-6/6A Trivia-Wing Bellcrank |
All ye RV-6/6A builders:
Think waaaay back when you built your wings (actually when you installed the
aileron bellcranks and pushrods). RV-7/8/9 builders don't apply, you have a
different bellcrank set up. Anyway, I was installing this for the last time
tonight and ran into a problem. The bellcrank installed in the mount with
its quarter inch bolt (and washers/spacers) ok. But when I installed the
AN3-10A bolt in the hole in the where the pushrod (rod end) goes, (and
installed a thick washer and nylock nut), the amount of bolt sticking out of
the nut created interference with the bottom (angle aluminum) mounting rail
and the bellcrank couldn't move full travel.
The bellcrank mounting rails, if you recall, are 1.5 inches apart and the
bellcrank is centered between them. Van's old plans call for an AN3-10A
bolt, thick washer and stop nut but that's obviously wrong. I checked my
rail spacing just to be sure and yes I built them to the plans. So...I
switched the bolt to an AN3-7 and with the thick washer and stop nut there
is 2-3 threads sticking out of the stop nut. The bellcrank rotates freely
but looking at the clearance between the end of the bolt and the bottom rail
I would guess about 1/16 of an inch is all I have.
This makes me nervous, the bellcrank mounting rails are 1/8 inch thick and
that area is pretty stout but, the rod ends mount into the outer ends of the
bellcrank itself (two pieces of 1/16 plate spaced apart by thick AN3 bolt
washers in 4 places plus the center bearing mount acting as a spacer). If
there is much flexing in the outer ends of the bellcrank in flight then it
might be possible for the bolt end to come in contact with the mounting rail
and ruin my day (life).
I looked at going to an AN3-6A bolt but it doesn't look like there will be
ANY threads sticking out of the stop nut when it's tightend (if I'm lucky
and use a thin washer, I might get the threads to edge of the nylon in the
end of the stop nut). Also if I used the -6A bolt I'll be violating the
"grip length rules" (unthreaded bolt shank will not go all the way through
the parts I'm bolting). Anyone remember having this problem? Did you use the
-6A bolt or.... the -7A and live with the close clearances? How critical is
it to adhere to the "grip length" rules?
Dean Psiropoulos
RV-6A N197DM
If I'd quit running into crazy crap like this I'd be done now!!!
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