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12-20-2019, 08:03 AM
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Join Date: Sep 2018
Location: LSZF
Posts: 418
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the ribs lightening brought 1.6kg on the balance for me 
( https://drive.google.com/drive/folde...BjnALbl5jqrp3x pict #047)
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Life's short... Enjoy
DC aka Dan
http://www.aerofun.ch
RV-6.9 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner & lover
RV-4 #2062 HB-YVZ airframe builder
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12-20-2019, 09:13 AM
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Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,210
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Titanium saves a little
I have 90% of my bolts and fasteners Titanium in my -4 (I'm in an industry where they are readily available) I used Titanium Hiloks everywhere I could, but I doubt I shaved nearly as much weight as everyone thinks I did. It weighs in around 940, and Im good with that.
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Bill E.
RV-4/N76WE
8A7 / Advance NC
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12-20-2019, 09:56 AM
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Join Date: Jan 2005
Posts: 210
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Titanium engine mount.
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Kevin Cameron - Fresno, CA - E79
N493DB RV4 Flying IO-360-A1B, 10:1, Straight-Bore cylinders, Gapless Piston Rings, Hartzell CS Prop,
AFS3400-EE, TruTrac DFII VS, Aera 660, GTX 335, GDL 52R,
XM Radio, SL30, SL40, PMA9000EX, MicroTrac 300 APRS
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12-20-2019, 10:26 AM
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Join Date: Jan 2005
Posts: 210
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Quote:
Originally Posted by akabud
Carbon instead of glass.
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Yes. Also use VARTM instead of wet layup.
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Kevin Cameron - Fresno, CA - E79
N493DB RV4 Flying IO-360-A1B, 10:1, Straight-Bore cylinders, Gapless Piston Rings, Hartzell CS Prop,
AFS3400-EE, TruTrac DFII VS, Aera 660, GTX 335, GDL 52R,
XM Radio, SL30, SL40, PMA9000EX, MicroTrac 300 APRS
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12-20-2019, 10:29 AM
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Join Date: Jul 2017
Posts: 343
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Quote:
Originally Posted by Vern
Not knowing you I have an observation of myself first of all and then other RV buds.
Some are willing to spend tons of money and effort but not on their own weight. Many of us could stand to lose a few pounds.
A cost analysis of the per pound saved would also apply to our waistlines as well as health
As I said, I?d be first in line needing this prescription!
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I agree. Went on a diet, lost a little over 40 pounds this year. Can carry more in my 9 nowadays. |
12-20-2019, 10:30 AM
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Join Date: Dec 2014
Location: Somerville, Tn and Little Rock, Ar
Posts: 111
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Lightweight
If you're going to remove the second seat anyway and want light, why not just build an RV-3? That'll save you about 100 pounds from the 4 and have the same engine. Probably take just as long to get either kit, or replacement pieces, since neither one is readily produced any more.
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12-20-2019, 10:31 AM
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Join Date: Dec 2010
Location: Colorado
Posts: 226
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As mentioned before, weight savings most notably observed on the flight line can be accomplished by a bathroom scale and mirror. Your wife or girlfriend will love you for it.
Cheers, Hans
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Build 'em light, keep it simple
I'd rather fly than tinker.
"There's a big difference between a pilot and an aviator. One is a technician, the other is an artist in love with flight."
- Elrey B. Jeppesen,
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12-20-2019, 10:41 AM
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Join Date: Jan 2005
Posts: 210
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Quote:
Originally Posted by fixnflyguy
I have 90% of my bolts and fasteners Titanium in my -4 (I'm in an industry where they are readily available) I used Titanium Hiloks everywhere I could, but I doubt I shaved nearly as much weight as everyone thinks I did. It weighs in around 940, and Im good with that.
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Can you estimate how much you saved?
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Kevin Cameron - Fresno, CA - E79
N493DB RV4 Flying IO-360-A1B, 10:1, Straight-Bore cylinders, Gapless Piston Rings, Hartzell CS Prop,
AFS3400-EE, TruTrac DFII VS, Aera 660, GTX 335, GDL 52R,
XM Radio, SL30, SL40, PMA9000EX, MicroTrac 300 APRS
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12-20-2019, 10:58 AM
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Join Date: Jan 2005
Posts: 210
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I've spent a preposterous amount of time dreaming about radical ways to lighten my RV-4.
Here's a few that nobody's listed so far:
Carbon roll bar
Carbon main gear and tail spring
Carbon push/pull control tubes
Titanium heim joints
Carbon empennage
Carbon flaps and ailerons
Carbon control sticks
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Kevin Cameron - Fresno, CA - E79
N493DB RV4 Flying IO-360-A1B, 10:1, Straight-Bore cylinders, Gapless Piston Rings, Hartzell CS Prop,
AFS3400-EE, TruTrac DFII VS, Aera 660, GTX 335, GDL 52R,
XM Radio, SL30, SL40, PMA9000EX, MicroTrac 300 APRS
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12-20-2019, 11:29 AM
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Join Date: Dec 2008
Location: Donie,Texas
Posts: 196
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Quote:
Originally Posted by oaklandaviator
If you're going to remove the second seat anyway and want light, why not just build an RV-3? That'll save you about 100 pounds from the 4 and have the same engine. Probably take just as long to get either kit, or replacement pieces, since neither one is readily produced any more.
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I want a higher Vne. Going to clip the wings HR2 style, increase the fuel capacity, and 200+ HP O360. Plus i will still have room for a back seat if later i want.
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Frank
RV6-N164FJ sold sadly
Legal Eagle w/Verner 3VW
Rans S7s
RV4- in progress
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