VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-10
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 01-18-2014, 08:36 AM
jimfaber jimfaber is offline
 
Join Date: Aug 2013
Location: Cocoa Beach FL
Posts: 21
Default

I think a bad Shorai battery is a definite possibility. Don't think it is the charging system. It reads good volts and amps when running and the Odyssey battery is always charged and ready to go.

The problem is that the Shorai battery was in the plane when I bought it and the builder can't remember where he bought it. Shorai will only give a 30% credit off the full retail price on a new one without a receipt and you have to pay shipping to return the old one and the new one. I decided to replace it with a PC680. $88 delivered.
Reply With Quote
  #22  
Old 03-04-2014, 08:32 AM
Flying again!'s Avatar
Flying again! Flying again! is offline
 
Join Date: Aug 2011
Location: Keller, TX
Posts: 408
Default Completed swap to Shorai LFX36L3 and did W&B

Got delayed some but just completed the swap of my Odyssey 1200 with the Shorai LFX36L3 and weighed the RV-10 again.

First, in 2.5 years the RV-10 gained 12 pounds. I weighed the plane after I imported it to the US and before Mel did the airworthiness inspection. Since then I installed HID lights, a rear strobe light, rudder trim, a Flap Positioning System, an anti splat air oil separator, 12 inch vinyl N numbers, a control head for a soon to be installed ADS-B system, interior lights, repaired 2 wheel fairings, and a bunch of other misc stuff. So 12 pound increase seems right.

Installing the Shorai LiFePro was straight forward and only needed the use of some of the pads that come with the battery and some balsa wood spacers. No battery box mod was required.

The result:

Empty weight and CG before: 1668 pounds and 108.0216
Empty weight and CG after: 1638 pounds and 106.2668

Saved 30 pounds and moved the CG 1.755 inches fwd. It turns out the battery moment arm on my -10 calculates as 203.83 inches.

Real world, I can carry my family (365# front seat, 270# rear seat, 130# in baggage) and be within aft CG at zero fuel. In comparison, before with the same passengers I could only carry 84# of baggage and be within CG at 0 fuel. So I gained 46 pounds of baggage capacity which is very useful with 2 women!

The only drawback is fwd CG solo cured by putting 20# in the luggage area.

So far battery is strong cranking the engine. More to follow as I get time on it.

TJ
__________________
RV-10 N331JH 3rd owner (First flew in 2005, #15 flying)
Northwest Regional 52F

Last edited by Flying again! : 03-04-2014 at 09:28 AM. Reason: Correct an error in CG shift
Reply With Quote
  #23  
Old 03-04-2014, 09:21 AM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
 
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
Default

Quote:
Originally Posted by Flying again! View Post
The result:

Empty weight and CG before: 1668 pounds and 108.0216
Empty weight and CG after: 1638 pounds and 106.2668

Saved 30 pounds and moved the CG 1.755 inches aft.
Looks like the C/G moved forward to me.
__________________
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
Reply With Quote
  #24  
Old 03-04-2014, 09:27 AM
Flying again!'s Avatar
Flying again! Flying again! is offline
 
Join Date: Aug 2011
Location: Keller, TX
Posts: 408
Default

Quote:
Originally Posted by Mike S View Post
Looks like the C/G moved forward to me.
Opps, you are right, my mind was focused on my aft CG issue I was trying to resolve.
__________________
RV-10 N331JH 3rd owner (First flew in 2005, #15 flying)
Northwest Regional 52F
Reply With Quote
  #25  
Old 03-04-2014, 07:53 PM
Bill.Peyton's Avatar
Bill.Peyton Bill.Peyton is offline
 
Join Date: Sep 2009
Location: St. Louis, MO
Posts: 1,788
Default

Please post your results after a few months. Like Wayne, I would like to save 30lbs also.
__________________
Bill Peyton
RV-10 - 1125 hrs
N37CP
First Flight Oct 2012
Aviation Partners, LLC
Reply With Quote
  #26  
Old 03-04-2014, 08:17 PM
Flying again!'s Avatar
Flying again! Flying again! is offline
 
Join Date: Aug 2011
Location: Keller, TX
Posts: 408
Default

Quote:
Originally Posted by Bill.Peyton View Post
Please post your results after a few months. Like Wayne, I would like to save 30lbs also.
Will do! The better CG will help a lot on the trip this weekend to the Bahamas with a full load.
__________________
RV-10 N331JH 3rd owner (First flew in 2005, #15 flying)
Northwest Regional 52F
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 06:12 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.