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Jump Starting?

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riffelj

Joined: 20 Apr 2009
Posts: 14

Posted: Tue Aug 18, 2009 8:00 am Post subject: Jump Starting?

Now, I would NEVER forget to turn the master off and drain the battery down on my RV7A. I have a shutdown checklist and I even leave the strobes on so I'll know the master is on as I walk away.  However this past weekend some gremlin did that to me while I was on a trip.  The standard design doesn't allow you to jump start a RV7. The cowl must be removed to get to the battery. And putting the cowl back on while the engine is running is more than just a little tricky  Luckily I was at an airport with a staffed FBO and a battery charger so I could solve the problem (I even carry enough tools to remove the cowl and battery). 

   

 But the event got me thinking. So I'm curious how others have designed a solution to a dead battery at small airport that may have limited/no support (like places I will probably fly into). I think I have 4 options:

  1) Do not design a solution (hoping the problem won't happen)

 2) Put an access door over the battery for jumper cables

 3) Install a "standard" external power plug

 4) Fabricate a connection for the positive jumper cable (negative jumper can be attached to exhaust/other ground)

  

 Distractions happen, so option 1 isn't very good. I guess I could just carry a battery charger as part of my std tool kit and wait till the battery will crank the engine ... unless the battery won't take a charge. 

   

 Option 2 is a fair amount of work and some parts cost for only occasional (hopefully) use - besides it seems to 'clutter up' the look. 

  

 Option 3 could be good. But it begs the question of what "standard" connectors are probably available at a small airport (Cessna, Piper, 'universal' or auto jumper cable). Parts cost could be a little pricey and it'll "clutter up" the look.

   

 Option 4 could be good. Normal auto jumpers would work and parts cost could be low. But there are questions on how/where the terminal is mounted. The jumpers need to be disconnected safely while the engine is running and cowl is installed. It needs to be protected (somehow) against accidental shorting while working near it. And I wouldn't want to have to disconnect the terminal every time I removed the cowl. It also shouldn't clutter up things or be prone to be covered in engine oil.

   

 Any great ideas/other solutions out there? A picture would help.

  

 "Jerry", RV7A, 90+ hrs

  [quote][b]

sarg314(at)gmail.com
Guest

Posted: Tue Aug 18, 2009 8:24 am Post subject: Jump Starting?

I put my battery where the old old (1999) RV-6A plans say to put it - in the cabin up against the firewall.Â  Things are too crowded under the cowl anyway.Â  Keeps it cooler and closer to the C.G. too.Â  I never thought about it, but it also makes the thing accessible for a jump start.

 

On Tue, Aug 18, 2009 at 8:58 AM, J Riffel <riffeljl(at)gmail.com (riffeljl(at)gmail.com)> wrote:

 	  Quote: 	
		   Now, I would NEVER forget to turn the master off and drain the battery down on my RV7A. I have a shutdown checklist and IÂ even leave the strobes on so I'll know the master is on as I walk away. Â However this past weekend some gremlin did that to me while I was on a trip.  

 	




-- 

Tom Sargent, RV-6A final assembly



  [quote][b]

jsflyrv(at)verizon.net
Guest

Posted: Tue Aug 18, 2009 8:39 am Post subject: Jump Starting?

[/b][/quote]

[b]

carlosh(at)structuralaz.c
Guest

Posted: Tue Aug 18, 2009 8:40 am Post subject: Jump Starting?

Hey Jerry,

I'm building a -7 also and I'm planning on Option #3. Take a look here 

http://www.chiefaircraft.com/airsec/Aircraft/Tools/BatteryService.html

You can place an external AN 2552-3A Oval Power Receptacle (ASOC 4621B) 

in a several locations of your choosing and carry a Plug and Jump (CA 

311807) with you in the flight bag or on the ship somewhere. If your 

need a jump somewhere take out the plug and play and use regular jumper 

cables from anyone. Plug it in the installed receptacle, attach, jump, 

unplug and on your way without ever removing any part of your airplane. 

That's my idea anyways.



Carlos in Arizona



J Riffel wrote:

 	  Quote: 	
		   Now, I would NEVER forget to turn the master off and drain the battery 

 down on my RV7A. I have a shutdown checklist and I even leave the 

 strobes on so I'll know the master is on as I walk away.  However this 

 past weekend some gremlin did that to me while I was on a trip.  The 

 standard design doesn't allow you to jump start a RV7. The cowl must 

 be removed to get to the battery. And putting the cowl back on while 

 the engine is running is more than just a little tricky  Luckily I 

 was at an airport with a staffed FBO and a battery charger so I could 

 solve the problem (I even carry enough tools to remove the cowl and 

 battery). 

  

 But the event got me thinking. So I'm curious how others have designed 

 a solution to a dead battery at small airport that may have limited/no 

 support (like places I will probably fly into). I think I have 4 options:

 1) Do not design a solution (hoping the problem won't happen)

 2) Put an access door over the battery for jumper cables

 3) Install a "standard" external power plug

 4) Fabricate a connection for the positive jumper cable (negative 

 jumper can be attached to exhaust/other ground)

  

 Distractions happen, so option 1 isn't very good. I guess I could just 

 carry a battery charger as part of my std tool kit and wait till the 

 battery will crank the engine ... unless the battery won't take a charge. 

  

 Option 2 is a fair amount of work and some parts cost for only 

 occasional (hopefully) use - besides it seems to 'clutter up' the look.

  

 Option 3 could be good. But it begs the question of what "standard" 

 connectors are probably available at a small airport (Cessna, Piper, 

 'universal' or auto jumper cable). Parts cost could be a little pricey 

 and it'll "clutter up" the look.

  

 Option 4 could be good. Normal auto jumpers would work and parts cost 

 could be low. But there are questions on how/where the terminal is 

 mounted. The jumpers need to be disconnected safely while the engine 

 is running and cowl is installed. It needs to be protected (somehow) 

 against accidental shorting while working near it. And I wouldn't want 

 to have to disconnect the terminal every time I removed the cowl. It 

 also shouldn't clutter up things or be prone to be covered in engine oil.

  

 Any great ideas/other solutions out there? A picture would help.

  

 "Jerry", RV7A, 90+ hrs

 *

 *


	


-- 

Carlos Hernandez <carlosh(at)sec-engr.com>

Structural Engineers Company

2963 W. Elliot Rd. - Suite 3

Chandler, AZ 85224

Phone: 480.968.8600

Fax: 480.968.8608

www.sec-engr.com

CONFIDENTIALITY NOTICE



The information in this email may be confidential and/or privileged.

This email is intended to be reviewed by only the individual or

organization named above. If you are not the intended recipient or

an authorized representative of the intended recipient, you are hereby

notified that any review, dissemination or copyingof this email and

its attachments, if any, or the information contained herein is

prohibited. If you havereceived this email in error, please

immediately notify the sender by return email and delete this email

from your system.

pitts_pilot(at)bellsouth.
Guest

Posted: Tue Aug 18, 2009 9:24 am Post subject: Jump Starting?

J Riffel wrote:



SNIP



 	  Quote: 	
		   But the event got me thinking. So I'm curious how others have designed a 

 solution to a dead battery at small airport that may have limited/no 

 support (like places I will probably fly into). I think I have 4 options:

 1) Do not design a solution (hoping the problem won't happen)

It just did
	


 	  Quote: 	
		   2) Put an access door over the battery for jumper cables

That would be a large access door.
	


 	  Quote: 	
		   3) Install a "standard" external power plug

As someone else suggested, either the Cessna or Piper auz power plugs 
	


will work .... and you can put them inside the cabin where you can 

disconnect them after starting.

 	  Quote: 	
		   4) Fabricate a connection for the positive jumper cable (negative jumper 

 can be attached to exhaust/other ground)

Is there room in the oil door to mount a stud connected to the 12V 
	


starter solenoid???

 	  Quote: 	
		    

 Distractions happen, so option 1 isn't very good. I guess I could just 

 carry a battery charger as part of my std tool kit and wait till the 

 battery will crank the engine ... unless the battery won't take a charge.

You also have to get access to electricity for the charger .... and one 
	


that will do the job takes up a lot of room.



 	  Quote: 	
		    

 Option 2 is a fair amount of work and some parts cost for only 

 occasional (hopefully) use - besides it seems to 'clutter up' the look.

Agreed.
	


 	  Quote: 	
		    

 Option 3 could be good. But it begs the question of what "standard" 

 connectors are probably available at a small airport (Cessna, Piper, 

 'universal' or auto jumper cable). Parts cost could be a little pricey 

 and it'll "clutter up" the look.

The standard C & P plugs are pretty much everywhere .... and the 
	


suggestion to carry a pigtail to connect jumper cables to is a good one.



 	  Quote: 	
		    

 Option 4 could be good. Normal auto jumpers would work and parts cost 

 could be low. But there are questions on how/where the terminal is 

 mounted. The jumpers need to be disconnected safely while the engine is 

 running and cowl is installed. It needs to be protected (somehow) 

 against accidental shorting while working near it. And I wouldn't want 

 to have to disconnect the terminal every time I removed the cowl. It 

 also shouldn't clutter up things or be prone to be covered in engine oil.

If the connection is mounted inside the cowl instead of through it 
	


alleviates one concern .... but creates the other:  It's 'hot' when the 

master is turned on for normal operation.  The Piper Traumahawk <GR> has 

it's aux connecter through the fuselage aft of the wing, and plugging 

power there activates a separate solenoid to apply power the the bus. A 

lot of extra weight, if you ask me.

 	  Quote: 	
		    

 Any great ideas/other solutions out there? A picture would help.

You might look for quick-connects at a welding supply place .... used 
	


for connecting welding cables to the welder.



I'm building a -10 and my emergency power will be mounted in the aft 

baggage bulkhead .... accessible through the baggage door.

Linn



 	  Quote: 	
		    

 "Jerry", RV7A, 90+ hrs

mr.sun

Joined: 30 Jan 2007
Posts: 85

Posted: Tue Aug 18, 2009 9:57 am Post subject: Jump Starting?

I had the similar occurance happen a couple times with the master left on (it can happen) and running the battery low failing a successful hot start with my fuel injected engine.



I've mostly solved the above two problems but came up with a good solution, I think.   I have a small trickle charger that I connect occasionally to the airplane via the included black rubber clad connector that  I reach and connect thru the oil filler door.  It has a little ATC type fuse near the battery terminal.

 

What I did was fabricate a jumper cable with a mating plug, 8' of 12 gauge wire and some small insulated alligator clips, color coded red/black.  Then I figured I never wanted more than 10 amps going thru the jumper setup so I got a 10 amp self resetting circuit breaker that goes into the ATC fuse.  It is sized to protect all the wires involved.  The trickle charger only puts out a couple amps.

 

This way, I can charge up from any airport charger, car, friends truck, lawn tractor or even the little solar panel I sometimes carry.  I figure that by the time I could get the cowl off, the battery could be charged up enough to turn over the engine just by what I can get thru the jumper wire setup.

 

Works for me....



Do not Archive



On Tue, Aug 18, 2009 at 10:23 AM, Linn Walters <pitts_pilot(at)bellsouth.net (pitts_pilot(at)bellsouth.net)> wrote:

 [quote]--> RV-List message posted by: Linn Walters <pitts_pilot(at)bellsouth.net (pitts_pilot(at)bellsouth.net)>

  

 J Riffel wrote:

 

 SNIP

 

  	  Quote: 	
		   But the event got me thinking. So I'm curious how others have designed a solution to a dead battery at small airport that may have limited/no support (like places I will probably fly into). I think I have 4 options:

  1) Do not design a solution (hoping the problem won't happen)

 	


 It just did

  	  Quote: 	
		   2) Put an access door over the battery for jumper cables

 	


 That would be a large access door.

  	  Quote: 	
		   3) Install a "standard" external power plug

 	


 As someone else suggested, either the Cessna or Piper auz power plugs will work .... and you can put them inside the cabin where you can disconnect them after starting.

  	  Quote: 	
		   4) Fabricate a connection for the positive jumper cable (negative jumper can be attached to exhaust/other ground)

 	


 Is there room in the oil door to mount a stud connected to the 12V starter solenoid???

  	  Quote: 	
		    Distractions happen, so option 1 isn't very good. I guess I could just carry a battery charger as part of my std tool kit and wait till the battery will crank the engine ... unless the battery won't take a charge.

  	


 You also have to get access to electricity for the charger .... and one that will do the job takes up a lot of room.

 

  	  Quote: 	
		    Option 2 is a fair amount of work and some parts cost for only occasional (hopefully) use - besides it seems to 'clutter up' the look.

 	


 Agreed.

  	  Quote: 	
		    Option 3 could be good. But it begs the question of what "standard" connectors are probably available at a small airport (Cessna, Piper, 'universal' or auto jumper cable). Parts cost could be a little pricey and it'll "clutter up" the look.

  	


 The standard C & P plugs are pretty much everywhere .... and the suggestion to carry a pigtail to connect jumper cables to is a good one.

 

  	  Quote: 	
		    Option 4 could be good. Normal auto jumpers would work and parts cost could be low. But there are questions on how/where the terminal is mounted. The jumpers need to be disconnected safely while the engine is running and cowl is installed. It needs to be protected (somehow) against accidental shorting while working near it. And I wouldn't want to have to disconnect the terminal every time I removed the cowl. It also shouldn't clutter up things or be prone to be covered in engine oil.

  	


 If the connection is mounted inside the cowl instead of through it alleviates one concern .... but creates the other:  It's 'hot' when the master is turned on for normal operation.  The Piper Traumahawk <GR> has it's aux connecter through the fuselage aft of the wing, and plugging power there activates a separate solenoid to apply power the the bus. A lot of extra weight, if you ask me. 

  	  Quote: 	
		    Any great ideas/other solutions out there? A picture would help.

 	


 You might look for quick-connects at a welding supply place .... used for connecting welding cables to the welder.

 

 I'm building a -10 and my emergency power will be mounted in the aft baggage bulkhead .... accessible through the baggage door.

 Linn

 

  	  Quote: 	
		    "Jerry", RV7A, 90+ hrs

 	


 

 ===========

 get="_blank">http://www.matronics.com/Navigator?RV-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 



[b]

_________________
Greg RV-7

david.nelson(at)pobox.com
Guest

Posted: Tue Aug 18, 2009 9:57 am Post subject: Jump Starting?

What about something like a cigarette lighter jumper cable?  Something like 

this:

http://www.amazon.com/Wagan-9796-Quick-Jumper-Jumpstarter/dp/B00005OWK2

It's fairly light and small and very portable.

I'm having problems finding any specifics on the current limits of this device 

so that the cigarette lighter circuit could be properly designed.  The one 

downside that I see is a battery so dead that the master can't be energized, but 

that can be easily gotten around.

Piper Tomarock! 

 	 /\/elson

~~  Lately my memory seems to be like a steel trap .... without any spring.  ~~

On Tue, 18 Aug 2009, Linn Walters wrote:

 	  Quote: 	

 J Riffel wrote:

 SNIP

> But the event got me thinking. So I'm curious how others have designed a 

> solution to a dead battery at small airport that may have limited/no 

> support (like places I will probably fly into). I think I have 4 options:

> 1) Do not design a solution (hoping the problem won't happen)

 It just did

> 2) Put an access door over the battery for jumper cables

 That would be a large access door.

> 3) Install a "standard" external power plug

 As someone else suggested, either the Cessna or Piper auz power plugs will 

 work .... and you can put them inside the cabin where you can disconnect them 

 after starting.

> 4) Fabricate a connection for the positive jumper cable (negative jumper 

> can be attached to exhaust/other ground)

 Is there room in the oil door to mount a stud connected to the 12V starter 

 solenoid???

>  Distractions happen, so option 1 isn't very good. I guess I could just 

> carry a battery charger as part of my std tool kit and wait till the 

> battery will crank the engine ... unless the battery won't take a charge.

 You also have to get access to electricity for the charger .... and one that 

 will do the job takes up a lot of room.

>  Option 2 is a fair amount of work and some parts cost for only occasional 

> (hopefully) use - besides it seems to 'clutter up' the look.

 Agreed.

>  Option 3 could be good. But it begs the question of what "standard" 

> connectors are probably available at a small airport (Cessna, Piper, 

> 'universal' or auto jumper cable). Parts cost could be a little pricey and 

> it'll "clutter up" the look.

 The standard C & P plugs are pretty much everywhere .... and the suggestion 

 to carry a pigtail to connect jumper cables to is a good one.

>  Option 4 could be good. Normal auto jumpers would work and parts cost 

> could be low. But there are questions on how/where the terminal is mounted. 

> The jumpers need to be disconnected safely while the engine is running and 

> cowl is installed. It needs to be protected (somehow) against accidental 

> shorting while working near it. And I wouldn't want to have to disconnect 

> the terminal every time I removed the cowl. It also shouldn't clutter up 

> things or be prone to be covered in engine oil.

 If the connection is mounted inside the cowl instead of through it alleviates 

 one concern .... but creates the other:  It's 'hot' when the master is turned 

 on for normal operation.  The Piper Traumahawk <GR> has it's aux connecter 

 through the fuselage aft of the wing, and plugging power there activates a 

 separate solenoid to apply power the the bus. A lot of extra weight, if you 

 ask me.

>  Any great ideas/other solutions out there? A picture would help.

 You might look for quick-connects at a welding supply place .... used for 

 connecting welding cables to the welder.

 I'm building a -10 and my emergency power will be mounted in the aft baggage 

 bulkhead .... accessible through the baggage door.

 Linn

>  "Jerry", RV7A, 90+ hrs

paul(at)bwbco.com
Guest

Posted: Tue Aug 18, 2009 12:22 pm Post subject: Jump Starting?

Or what about a "Battery Tender" like we use on our  mototcycles.  You can get them at Amazon or E-bay.

 http://www.amazon.com/s/?ie=UTF8&keywords=battery++tender&tag=googhydr-20&index=aps&hvadid=2337211121&ref=pd_sl_2sc3ptjn_e

  

 Two wires are attached to the battery with a small  plug on the other end.  Run the plug up near the oil door.  You can  open the oil door and plug in for maitainer charge or charge when run  down.

  

 Paul

 67KB  RV-4

  

 [quote]   ---

JohnInReno

Joined: 08 Sep 2007
Posts: 150

Posted: Tue Aug 18, 2009 1:07 pm Post subject: Jump Starting?

fyi - Aeroelectric "Bob" has done some extensive testing on battery maintainers and the best turns out to be the 1.5 Schumacher available at any Walmart < $20.

 

 John Morgensen

 N600BH RV4

 N847X Grumman AA1B - 150 (For Sale)

 RV9A - Wiring

 

 Paul Bowmar wrote: [quote]            Or what about a "Battery Tender" like we use on our mototcycles.  You can get them at Amazon or E-bay.

   [url=http://www.amazon.com/s/?ie=UTF8&keywords=battery++tender&tag=googhydr-20&index=aps&hvadid 337211121&ref=pd_sl_2sc3ptjn_e]http://www.amazon.com/s/?ie=UTF8&keywords=battery++tender&tag=googhydr-20&index=aps&hvadid 337211121&ref=pd_sl_2sc3ptjn_e[/url]

    

   Two wires are attached to the battery with a small plug on the other end.  Run the plug up near the oil door.  You can open the oil door and plug in for maitainer charge or charge when run down.

    

   Paul

   67KB  RV-4

    

 [b]

_________________
John Morgensen
RV-9A - Born on July 3, 2013
RV4 - for sale

pbesing(at)yahoo.com
Guest

Posted: Tue Aug 18, 2009 1:46 pm Post subject: Jump Starting?

Option #4 is the simplest in my opinion.  Just put a lug on the firewall side that you can access through cut out in the bottom of the cowl.  Just be sure it is not close to the firewall (isolate with rubber grommets) so that you don't risk touching anything to ground. Cover with a rubber boot to keep anything from shorting out in flight.  



In an RV a dead battery is pain if you don't have those provisions.  Ask me how I know ..especially when your radio stack is mounted to the battery box on an RV-4!



Paul Besing

From: J Riffel <riffeljl(at)gmail.com>

To: rv-list <rv-list(at)matronics.com>

Sent: Tuesday, August 18, 2009 8:58:19 AM

Subject: Jump Starting?



 Now, I would NEVER forget to turn the master off and drain the battery down on my RV7A. I have a shutdown checklist and I even leave the strobes on so I'll know the master is on as I walk away.  However this past weekend some gremlin did that to me while I was on a trip.  The standard design doesn't allow you to jump start a RV7. The cowl must be removed to get to the battery. And putting the cowl back on while the engine is running is more than just a little tricky  Luckily I was at an airport with a staffed FBO and a battery charger so I could solve the problem (I even carry enough tools to remove the cowl and battery). 

   

 But the event got me thinking. So I'm curious how others have designed a solution to a dead battery at small airport that may have limited/no support (like places I will probably fly into). I think I have 4 options:

  1) Do not design a solution (hoping the problem won't happen)

 2) Put an access door over the battery for jumper cables

 3) Install a "standard" external power plug

 4) Fabricate a connection for the positive jumper cable (negative jumper can be attached to exhaust/other ground)

  

 Distractions happen, so option 1 isn't very good. I guess I could just carry a battery charger as part of my std tool kit and wait till the battery will crank the engine ... unless the battery won't take a charge. 

   

 Option 2 is a fair amount of work and some parts cost for only occasional (hopefully) use - besides it seems to 'clutter up' the look. 

  

 Option 3 could be good. But it begs the question of what "standard" connectors are probably available at a small airport (Cessna, Piper, 'universal' or auto jumper cable). Parts cost could be a little pricey and it'll "clutter up" the look.

   

 Option 4 could be good. Normal auto jumpers would work and parts cost could be low. But there are questions on how/where the terminal is mounted. The jumpers need to be disconnected safely while the engine is running and cowl is installed. It needs to be protected (somehow) against accidental shorting while working near it. And I wouldn't want to have to disconnect the terminal every time I removed the cowl. It also shouldn't clutter up things or be prone to be covered in engine oil.

   

 Any great ideas/other solutions out there? A picture would help.

  

 "Jerry", RV7A, 90+ hrs

  [quote]

[b]

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Tue Aug 18, 2009 3:19 pm Post subject: Jump Starting?

Yes, this has worked well for me. Though I've never tried it on a

completely flat battery.



On 8/18/09, Paul Bowmar <paul(at)bwbco.com> wrote:

[quote] Or what about a "Battery Tender" like we use on our mototcycles.  You can

 get them at Amazon or E-bay.

 http://www.amazon.com/s/?ie=UTF8&keywords=battery++tender&tag=googhydr-20&index=aps&hvadid 337211121&ref=pd_sl_2sc3ptjn_e



 Two wires are attached to the battery with a small plug on the other end.

 Run the plug up near the oil door.  You can open the oil door and plug in

 for maitainer charge or charge when run down.



 Paul

 67KB  RV-4



   ---

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

wstucklen1(at)cox.net
Guest

Posted: Wed Aug 19, 2009 3:24 am Post subject: Jump Starting?

I've built three RV's so far, and all have had a standard Piper Power Plug mounted on the belly.  Most all FBO's will have the ability to jump start me if I forget to turn off the master..... And yes, I have needed it a few time in the 3000 Hrs+ that I have in RV's. 

  The plug also doubles as a power input if I want to sit in the hanger on a rainy day and fiddle with the avionics.....



Fred Stucklen

RV-7A  N924RV  257 Hrs in one year!

RV-6A  N926RV  800+ Hrs  (Sold)

RV-6A  N925RV  2008 Hrs  (Sold)

dave.gribble(at)mchsi.com
Guest

Posted: Wed Aug 19, 2009 5:12 am Post subject: Jump Starting?

Fred - where did you mount the piper plug, and did you wire it with a contactor or directly to the battery?  I'm building a 9A.

-------------- Original message ----------------------

From: <wstucklen1(at)cox.net>

 	  Quote: 	
		  

 

 

I've built three RV's so far, and all have had a standard Piper Power Plug 
	


mounted on the belly.  Most all FBO's will have the ability to jump start me if 

I forget to turn off the master..... And yes, I have needed it a few time in the 

 	  Quote: 	
		   3000 Hrs+ that I have in RV's. 

  The plug also doubles as a power input if I want to sit in the hanger on a 
	


 	  Quote: 	
		   rainy day and fiddle with the avionics.....

 

 Fred Stucklen

 RV-7A  N924RV  257 Hrs in one year!

 RV-6A  N926RV  800+ Hrs  (Sold)

 RV-6A  N925RV  2008 Hrs  (Sold)

wmjack1(at)t3cs.net
Guest

Posted: Wed Aug 19, 2009 5:41 am Post subject: Jump Starting?

Dave,



I'm building a 9A as well. Try this link for info along with Fred's response.



http://www.aeroelectric.com/articles/grndpwr.pdf



Jack Hilditch

--

carlosh(at)structuralaz.c
Guest

Posted: Wed Aug 19, 2009 8:12 am Post subject: Jump Starting?

Jerry,

A thread on VAF just started this morning about this very topic. Check 

it out here for an example of your Option 4. 

http://www.vansairforce.com/community/showthread.php?t=46962 This looks 

as simple as can be. Just another idea for you.



Carlos



-- 

Carlos Hernandez <carlosh(at)sec-engr.com>

Structural Engineers Company

2963 W. Elliot Rd. - Suite 3

Chandler, AZ 85224

Phone: 480.968.8600

Fax: 480.968.8608

www.sec-engr.com

CONFIDENTIALITY NOTICE



The information in this email may be confidential and/or privileged.

This email is intended to be reviewed by only the individual or

organization named above. If you are not the intended recipient or

an authorized representative of the intended recipient, you are hereby

notified that any review, dissemination or copyingof this email and

its attachments, if any, or the information contained herein is

prohibited. If you havereceived this email in error, please

immediately notify the sender by return email and delete this email

from your system.

martin(at)gbonline.com
Guest

Posted: Thu Aug 20, 2009 7:22 am Post subject: Jump Starting?

I experienced a similar problem years ago when I  first finished my RV8.  I obtained a Piper aux power receptacle  (it  is the most compact size and almost every FBO has an APU jump cable).  I  did use it once and it saved the day.  I installed it inside of the cabin  in an out of the way place that was accessable with the canopy open.   

 Dick Martin

 RV8 N233

 the fast one

 [quote]   ---

Matt Dralle
Site Admin

Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA

Posted: Thu Aug 20, 2009 7:56 am Post subject: Jump Starting?

Hi Jerry,



I used the Cessna style plug on my RV-8 mounted in the back of the baggage area.  Works great and I've been using it as a GPU plug during the electrical/avionics installation phase.  Here are a couple links to my installation for reference:



http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=3912&log=68984&row=48



http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=3912&log=70614&row=14



http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=3912&log=70615&row=13



http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=3912&log=73643&row=3



http://www.mykitlog.com/users/display_log.php?user=dralle&project=638&category=3912&log=73644&row 



Best regards,



Matt Dralle

RV-8 #82880 N998RV

http://www.mykitlog.com/dralle

FWF



At 08:58 AM 8/18/2009  Tuesday, you wrote:

 	  Quote: 	
		  Now, I would NEVER forget to turn the master off and drain the battery down on my RV7A. I have a shutdown checklist and I even leave the strobes on so I'll know the master is on as I walk away.  However this past weekend some gremlin did that to me while I was on a trip.  The standard design doesn't allow you to jump start a RV7. The cowl must be removed to get to the battery. And putting the cowl back on while the engine is running is more than just a little tricky  Luckily I was at an airport with a staffed FBO and a battery charger so I could solve the problem (I even carry enough tools to remove the cowl and battery). 

 

But the event got me thinking. So I'm curious how others have designed a solution to a dead battery at small airport that may have limited/no support (like places I will probably fly into). I think I have 4 options:

1) Do not design a solution (hoping the problem won't happen)

2) Put an access door over the battery for jumper cables

3) Install a "standard" external power plug

4) Fabricate a connection for the positive jumper cable (negative jumper can be attached to exhaust/other ground)

 

Distractions happen, so option 1 isn't very good. I guess I could just carry a battery charger as part of my std tool kit and wait till the battery will crank the engine ... unless the battery won't take a charge. 

 

Option 2 is a fair amount of work and some parts cost for only occasional (hopefully) use - besides it seems to 'clutter up' the look. 

 

Option 3 could be good. But it begs the question of what "standard" connectors are probably available at a small airport (Cessna, Piper, 'universal' or auto jumper cable). Parts cost could be a little pricey and it'll "clutter up" the look.

 

Option 4 could be good. Normal auto jumpers would work and parts cost could be low. But there are questions on how/where the terminal is mounted. The jumpers need to be disconnected safely while the engine is running and cowl is installed. It needs to be protected (somehow) against accidental shorting while working near it. And I wouldn't want to have to disconnect the terminal every time I removed the cowl. It also shouldn't clutter up things or be prone to be covered in engine oil.

 

Any great ideas/other solutions out there? A picture would help.

 

"Jerry", RV7A, 90+ hrs


	


Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551

925-606-1001 V | 925-606-6281 F | dralle(at)matronics.com Email

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