Today's Message Index:
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1. 05:21 PM - Weight & Balance Spreadsheet (Matt Dralle)
2. 05:57 PM - Re: Top Fwd Skin (Breece Nesbitt)
Message 1
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| Subject: | Weight & Balance Spreadsheet |
Dear Listers,
I finally weighted the 'ol RV-8 last night. Gulp. As expected, pretty heavy.
I did forget to fill it up with oil before I weighed, however, so I'll have to
redo my weighing after I do that.
In the meantime, I created a spreadsheet to calculate the Weight & Balance. The
sheet calculates a number of common scenarios and allows for the user-entering
of various parameters such as pilot weight and plane weights as well as the
various arms. Its setup for an RV-8, but could very easily be modified for other
models of RVs. After I finished it, I thought other builders might like
to use it as well. It comes with no guarantees whatsoever.
You can click on the link below to download either the PDF or the Excel spreadsheet:
PDF Format:
http://www.matronics.com/MattsRV8/WeightAndBalance/RV-8WeightAndBalance-Version1.0-MattDralle.pdf
Excel Format:
http://www.matronics.com/MattsRV8/WeightAndBalance/RV-8WeightAndBalance-Version1.0-MattDralle.xls
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Blog
Message 2
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| Subject: | Re: Top Fwd Skin |
Thanks for the information, Matt.- I've ordered the Cherry Max CR3214 Pop
Rivets from Genuine Aircraft Hardware Company.- Your airplane, by the wa
y, looks very nice!- =0A-=0ABreece=0A=0A=0A=0A=0A______________________
__________=0AFrom: Matt Dralle <dralle@matronics.com>=0ATo: rv8-list@matron
ics.com=0ASent: Tue, April 6, 2010 8:16:52 PM=0ASubject: Re: RV8-List: Top
Fwd Skin=0A=0AAt 05:02 PM 4/6/2010- Tuesday, you wrote:=0A=0ARV-8 List Me
mbers,=0A>-=0A>I've finally come to the place in building where I have to
attach the top forward skin.- A lot of the rivet locations are about imp
ossibe to get to - especially along the sides in the gear boxes.- I've co
nsidered cherry max rivets, but the smallest size is too large.- Is anyon
e aware of screws being used instead of rivets for this skin?- =0A>-=0A
>If the longerons are tapped and platenuts are installed on tops of the bul
khead, firewall and panel, flat head screws (NAS514 machine screws) could b
e used.- Also, this would make it possible to remove the skin and windshi
eld, I believe. =0A>-=0A>Any comments would be appreciated.=0A>-=0A>Bre
ece Nesbitt=0A>RV-8=0A>N28117=0A>=0AHi Breece,=0A=0AThe text below is from
my log entry regarding this vary thing.=0A=0A"CherryMax CR3214 Pop Rivets O
n Gear Towers=0A=0AThere were about 6 rivets on each side of the top instru
ment panel skin that were located inside the gear towers. Consequently, get
ting to the backside to buck them was nearly impossible. I suppose with jus
t the right bucking bar, crafted specifically just for reaching those pesky
rivets, you probably could buck them, but of the 8 or 9 bucking bars I hav
e, nothing came even close.=0A=0AI did a little research on the Net and fou
nd that many people have been using CherryMax CR3214 4-4 Pop rivets for the
se few rivets. These, however, seem to be a little hard to find because the
y have a 1/8" body, but a 3/32" countersunk rivet head. I found a great sou
rce for them, however, at Genuine Aircraft Hardware Company ( http://www.ge
n-aircraft-hardware.com/store.asp?alternate=CR3214%2D4%2D4 ). These guys
have all kind of nifty hardware for aircraft and are very friendly and help
ful on the phone. Give them a call and have them ship you a catalog; a reso
urce guide in and of itself.=0A=0AI ordered 30 or so of the CR3214 4-4 and
when they arrived, I drilled the holes out to 1/8" and then stuck them in t
he holes. The are really cool and leave a completely flush rivet that almos
t cannot be distinguished from a standard 426 3/32" rivet. In fact, the man
drel of these pop rivets breaks off exactly flush as well, so they don't ev
en leave any ugly hole.=0A=0ABy the way, if you have a decent "standard" po
p rivet tool, it should work with the CR3214 rivets as well. No need to buy
a special rivet tool."=0A=0AOnline log entries here:=0A=0A-----
--- http://www.mattsrv8.com/users/display_log.php?user=MattsRV8&pro
ject=638&log=94469&row=160 =0A=0A-------- http://www.
mattsrv8.com/users/display_log.php?user=MattsRV8&project=638&log=9447
0&row=159 =0A=0A=0AMatt Dralle=0ARV-8 #83880 N998RV=0Ahttp://www.mattsrv8
.com/ Matt's RV-8 Constrution Log=0AFinal Bits - Inspection then Test Fligh
t!
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