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  #31  
Old 05-14-2015, 09:34 PM
Mel's Avatar
Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 10,149
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Quote:
Originally Posted by carrollcw View Post
85 lb baggage capacity with full tanks and the wife and me (320 lbs). Looks like no acro with a passenger though . Oh well!
Do not figure baggage allowance with full fuel. You will seldom land with full tanks. Baggage allowance should be calculated with minimum fuel for C/G limits.
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Mel Asberry..DAR since last century
A&P/EAA Tech Counselor/Flight Advisor/Nat'l Test Pilot School
Specializing in Amateur-Built and Light-Sport Aircraft
<rvmel(at)icloud.com>
North Texas (8TA5)
RV-6 Flying since 1993, 172hp O-320, 3-Blade Catto (since 2003)
Legend Cub purchased 12/2017
FRIEND of the RV-1
Eagle's Nest Mentor
Recipient of Wright Brothers "Master Pilot" Award

Last edited by Mel : 03-09-2017 at 11:35 AM.
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  #32  
Old 03-14-2016, 08:34 AM
kblack kblack is offline
 
Join Date: Mar 2008
Location: Granbury, Tx
Posts: 26
Default Unpainted taildragger

Empty = 1,055 (491 RW, 495 LW, 69 TW), 80.98"

RV-7 slider, unpainted, no gear leg fairings or wheel pants. Minimal interior, but I plan to only add front and baggage carpet. Barrett IO-360-X, 8.5:1 (180hp) with Superior sump, Catto 3-blade, Vetterman 4-pipe exhaust, SkyTech starter, and backup alternator on accessory pad. Battery is Van's standard firewall mount. Dynon panel with GNS-430W.

I expect paint, carpet, etc to add 30 to 40 lbs and move the CG further aft. Right now, I would be limited to 79 lbs baggage with standard 170 lb pilot and passenger, but T/O gross would only be 1,726. Soooo, I will likely install a 15-20 lb crush plate. Looks like this will get me close to 100 lb baggage with 2 adults at both fuel extremes. I also plan to fabricate a storage locker for the tie-down kit (about 12 lbs) as far forward on the center floor as practical.

UPDATE with PAINT and more:
I did install an 18# steel crush plate to move the CG forward. Also added a locker for tie-down kit on top of the fuel pump/filter cover, and included the 12 lb kit and locker in the W&B (kit required to be on-board). Finally, added paint and 1 gal unusable fuel.
Empty = 1,117# at 80.29"

With 2 people at 170# each and 100# bags, full fuel wt is 1803#. Aft CG limit is OK down to 8 gal of fuel remaining. With just me on board, I'm in limits down to zero fuel with 100# baggage. Aerobatic weight and CG limits with 2 people at 170# each (no baggage) are OK with zero to 24 gallons on board. Single pilot (170#), any fuel amount is OK.
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Granbury Texas
RV-7 QB (N74KB) - Flying
RV-10 QB - Empennage Started

Last edited by kblack : 08-09-2018 at 11:00 AM. Reason: Add updated info.
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  #33  
Old 03-14-2016, 05:09 PM
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MikeyDale MikeyDale is offline
 
Join Date: Aug 2012
Location: Garden City Texas
Posts: 814
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mains 522 and 529
TW 72
Empty CG 81.25

Hartzell CS, IO 360, Full Classic Aero Interior, Paint

Not too bad but it still eats on me! I splurged for the CS and my wife and I still cant carry 100 lbs and land with less than 30 gal! I need to find a lighter TW and start polishing that paint on the tail!
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RV 7 FLYING SINCE 4/2015!
Garden City, Texas
First Flight https://www.youtube.com/watch?v=QqgxhWH3pqA
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  #34  
Old 08-28-2016, 09:11 PM
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bret bret is offline
 
Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,781
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Do we need to put together a detailed equipment list, and their appropriate calculations for the W&B? and how detailed? canopy shade open close, hand held ect?
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  #35  
Old 12-06-2016, 10:21 AM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,807
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Quote:
Originally Posted by bret View Post
Do we need to put together a detailed equipment list, and their appropriate calculations for the W&B? and how detailed? canopy shade open close, hand held ect?
Bret,

Slow response but my 2c is that you do not need a detailed equipment list with locations/weights/arms but it would not hurt if you did. Changing things down the road would be easier to re-calculate.

Keep in mind that any change under 1 lb does not require a change to W&B.
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Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, 1 PMag, Vetterman Trombone Exh, SkyTech starter, PlanePower Alt
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines
NSDQ

"The object of the game, gentlemen, is not to cheat death: the object is not to let him play."
Patrick Poteen, Sgt. U.S. Army

Last edited by Raymo : 02-02-2017 at 02:03 PM.
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  #36  
Old 02-02-2017, 02:07 PM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,807
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My numbers now that I am flying rather than building. No wheel pants or paint at this time.

RV-7A
L = 410
R = 408
N = 275
CG = 80.19
Total = 1093 = 707 usable load

I installed a 20 lb Saber plate to compensate for the 12 lb Catto 3 blade prop. Also have the Anti-Splat Nose Job 2.
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Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, 1 PMag, Vetterman Trombone Exh, SkyTech starter, PlanePower Alt
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines
NSDQ

"The object of the game, gentlemen, is not to cheat death: the object is not to let him play."
Patrick Poteen, Sgt. U.S. Army

Last edited by Raymo : 03-14-2017 at 02:08 PM.
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  #37  
Old 03-09-2017, 11:08 AM
Chattin35 Chattin35 is offline
 
Join Date: Jul 2014
Location: Boise, ID
Posts: 232
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Quote:
Originally Posted by rockwoodrv9 View Post
Im thinking the same thing for the 9A I am building. I want a Catto and the 6800 battery, but I am afraid I will not be able to carry the baggage I want to. I think it is more of an issue with the 7, but what are people doing to keep the CG in the right place for baggage? A little more weight up front makes a big difference.
Rocky, I think the -A models have fewer aft CG issues than the taildraggers. I wouldn't stress about it. There are many ways to adjust.
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  #38  
Old 03-09-2017, 11:20 AM
Chattin35 Chattin35 is offline
 
Join Date: Jul 2014
Location: Boise, ID
Posts: 232
Default Be careful with this one...

Quote:
Originally Posted by Mel View Post
Do not figure baggage allowance with full fuel. You will seldom land with fuel tanks. Baggage allowance should be calculated with minimum fuel.
... Except for emergency returns. Understand the risk you're taking doing this. RV's can't dump fuel -- unless someone has a crazy mod .
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  #39  
Old 03-09-2017, 11:34 AM
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Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 10,149
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Quote:
Originally Posted by Chattin35 View Post
... Except for emergency returns. Understand the risk you're taking doing this. RV's can't dump fuel -- unless someone has a crazy mod .
My primary concerns are for C/G limits. You are correct that it IS a factor for gross weight.
__________________
Mel Asberry..DAR since last century
A&P/EAA Tech Counselor/Flight Advisor/Nat'l Test Pilot School
Specializing in Amateur-Built and Light-Sport Aircraft
<rvmel(at)icloud.com>
North Texas (8TA5)
RV-6 Flying since 1993, 172hp O-320, 3-Blade Catto (since 2003)
Legend Cub purchased 12/2017
FRIEND of the RV-1
Eagle's Nest Mentor
Recipient of Wright Brothers "Master Pilot" Award
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  #40  
Old 03-13-2017, 05:53 PM
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roadrunner20 roadrunner20 is offline
 
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Location: Bay Pines, FL (based @ KCLW)
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Quote:
Originally Posted by Chattin35 View Post
Rocky, I think the -A models have fewer aft CG issues than the taildraggers. I wouldn't stress about it. There are many ways to adjust.
IO360, 2005 catto 3 blade

Here's my morphed 7A to 7 data
7A CG = 81.88, empty weight 1081
7 CG = 81.11, empty weight 1065

Since I will be installing the landoll ring, I was looking at the data today, my cg moved forward on the conversion.

The 12# ring will help, but I will also keep my lead scuba bean bags on my inside firewall. I created a dam to hole them forward.
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Danny "RoadRunner" Landry
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1095+ hours
2018 Donation Paid

Last edited by roadrunner20 : 03-13-2017 at 06:23 PM.
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