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Leaning For Taxi

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jkreidler

Joined: 13 Feb 2008
Posts: 151
Location: Sheboygan Falls WI

Posted: Thu Mar 05, 2009 12:18 pm Post subject: Leaning For Taxi

We started writing out checklists (POH) and have noticed that a few samples have the operator lean the engine after start and before taxi.  What are the reasons for leaning during taxi?  Upsides, downsides?  Is this just a fuel savings measure, does it prevent fouling? 

 

Just getting ready to dump in oil and fire it up!! 



 Thanks, Jason Kreidler 

 

#40617 N44YH 

Sheboygan Falls, WI

 (4) Partner Build 

Jason Kreidler 

Kyle Hokel 

Tony Kolar 

Wayne Elsner [quote][b]

_________________
Jason Kreidler
4 Partner Build - Sheboygan Falls, WI
Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler
N44YH - Flying - #40617

rene(at)felker.com
Guest

Posted: Thu Mar 05, 2009 12:41 pm Post subject: Leaning For Taxi

I operate out of Ogden UT ~4500 feet.  Need to lean for takeoff and the plugs will foul during the taxi if I don’t.  With the new engine (before first flight) I could not get from the hanger to the runup area without a little fouling.  But, other than the first flight, it was manageable.  

   

Rene' Felker  

RV-10 N423CF Flying  

801-721-6080    

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of jason.kreidler(at)regalbeloit.com

 Sent: Thursday, March 05, 2009 1:16 PM

 To: rv10-list(at)matronics.com

 Subject: Leaning For Taxi  

  

   



 We started writing out checklists (POH) and have noticed that a few samples have the operator lean the engine after start and before taxi.  What are the reasons for leaning during taxi?  Upsides, downsides?  Is this just a fuel savings measure, does it prevent fouling? 

 

 Just getting ready to dump in oil and fire it up!! 

 

 Thanks, Jason Kreidler 

 

 #40617 N44YH 

 Sheboygan Falls, WI

 (4) Partner Build 

 Jason Kreidler 

 Kyle Hokel 

 Tony Kolar 

 Wayne Elsner    	  Quote: 	
		    http://www.matronics.com/Navigator?RV10-List 	
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       [quote][b]

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Thu Mar 05, 2009 12:51 pm Post subject: Leaning For Taxi

You will foul your plugs real bad if you run anything over

what's necessary to run the engine while on the ground.

So, the fix is lean real aggressively.  So far that you

can't even get 2000RPM out of it during taxi.  If

you do this, you won't forget to richen it before

takeoff (also if you use your checklist), because

the engine will just bog if you add throttle.



So it's just for keeping your plugs clean (and it

saves fuel as a bonus) while running at lower power.

Plugs won't foul so easily once you add power.



Tim Olson - RV-10 N104CD - Flying



jason.kreidler(at)regalbeloit.com wrote:

 	  Quote: 	
		   

 We started writing out checklists (POH) and have noticed that a few 

 samples have the operator lean the engine after start and before taxi. 

  What are the reasons for leaning during taxi?  Upsides, downsides?  Is 

 this just a fuel savings measure, does it prevent fouling?

 

 Just getting ready to dump in oil and fire it up!!

 

 Thanks, Jason Kreidler

 

 #40617 N44YH

 Sheboygan Falls, WI

 (4) Partner Build

 Jason Kreidler

 Kyle Hokel

 Tony Kolar

 Wayne Elsner

 

 *

ron.mcgann(at)baesystems.
Guest

Posted: Thu Mar 05, 2009 1:37 pm Post subject: Leaning For Taxi

This is an intriguing thread.  I've never heard of leaning during taxi.

(A sheltered life I guess!)  Looking forward to some more opinions on

this one - will be doing some taxi tests this weekend and bedding the

brakes.



Now VH-XRM on the Australian register.  No longer a kit!!



Cheers,

Ron - can almost taste it!!

 



--

drfred(at)suddenlinkmail.
Guest

Posted: Thu Mar 05, 2009 1:49 pm Post subject: Leaning For Taxi

Jason;



Just pulled my plugs and cleaned them at 80 hrs because I didn't lean on 

the ground.  Another lesson learned.  Started having asymmetrical mag 

drops.  As the other posts have said.  Lean out aggressively  once you 

get the engine started. 



Let us know when you fire it up! 



Dr Fred.

jason.kreidler(at)regalbeloit.com wrote:

 	  Quote: 	
		  

 We started writing out checklists (POH) and have noticed that a few 

 samples have the operator lean the engine after start and before taxi. 

  What are the reasons for leaning during taxi?  Upsides, downsides? 

  Is this just a fuel savings measure, does it prevent fouling?



 Just getting ready to dump in oil and fire it up!!



 Thanks, Jason Kreidler



 #40617 N44YH

 Sheboygan Falls, WI

 (4) Partner Build

 Jason Kreidler

 Kyle Hokel

 Tony Kolar

 Wayne Elsner

 *

 *

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Thu Mar 05, 2009 2:00 pm Post subject: Leaning For Taxi

The safe way to do it with any aircraft engine is lean till the engine

almost quits while you are taxiing. That way any advance of the

throttle will make the engine stumble, so you don't forget as you take

the runway.



On Thu, Mar 5, 2009 at 2:47 PM, Fred Williams, M.D.

<drfred(at)suddenlinkmail.com> wrote:

 	  Quote: 	
		   

 <drfred(at)suddenlinkmail.com>

 Jason;



 Just pulled my plugs and cleaned them at 80 hrs because I didn't lean on the

 ground.  Another lesson learned.  Started having asymmetrical mag drops.  As

 the other posts have said.  Lean out aggressively  once you get the engine

 started.

 Let us know when you fire it up!

 Dr Fred.

 jason.kreidler(at)regalbeloit.com wrote:

>

> We started writing out checklists (POH) and have noticed that a few

> samples have the operator lean the engine after start and before taxi.  What

> are the reasons for leaning during taxi?  Upsides, downsides?  Is this just

> a fuel savings measure, does it prevent fouling?

>

> Just getting ready to dump in oil and fire it up!!

>

> Thanks, Jason Kreidler

>

> #40617 N44YH

> Sheboygan Falls, WI

> (4) Partner Build

> Jason Kreidler

> Kyle Hokel

> Tony Kolar

> Wayne Elsner

> *

> *

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Thu Mar 05, 2009 2:17 pm Post subject: Leaning For Taxi

That sounds familiar. 



Also, another step that helps with the plugs that I've heard

over the years is that before you shut the engine down, you should

run it up to at least 1200RPM (or was it 1800?) for about 15-20

seconds while leaning it as far as possible...trying to get

the EGT's back up a bit and burn off any lead right before

you kill the engine.  Then power down to idle, lean to cut-off,

and that helps keep things clean too.



Tim Olson - RV-10 N104CD - Flying



Kelly McMullen wrote:

 	  Quote: 	
		   

 

 The safe way to do it with any aircraft engine is lean till the engine

 almost quits while you are taxiing. That way any advance of the

 throttle will make the engine stumble, so you don't forget as you take

 the runway.

 

 On Thu, Mar 5, 2009 at 2:47 PM, Fred Williams, M.D.

 <drfred(at)suddenlinkmail.com> wrote:

> 

> <drfred(at)suddenlinkmail.com>

> Jason;

>

> Just pulled my plugs and cleaned them at 80 hrs because I didn't lean on the

> ground.  Another lesson learned.  Started having asymmetrical mag drops.  As

> the other posts have said.  Lean out aggressively  once you get the engine

> started.

> Let us know when you fire it up!

> Dr Fred.

> jason.kreidler(at)regalbeloit.com wrote:

>> We started writing out checklists (POH) and have noticed that a few

>> samples have the operator lean the engine after start and before taxi.  What

>> are the reasons for leaning during taxi?  Upsides, downsides?  Is this just

>> a fuel savings measure, does it prevent fouling?

>>

>> Just getting ready to dump in oil and fire it up!!

>>

>> Thanks, Jason Kreidler

>>

>> #40617 N44YH

>> Sheboygan Falls, WI

>> (4) Partner Build

>> Jason Kreidler

>> Kyle Hokel

>> Tony Kolar

>> Wayne Elsner

>> *

>>

>>

>> *

>

jump2(at)sbcglobal.net
Guest

Posted: Thu Mar 05, 2009 2:32 pm Post subject: Leaning For Taxi

Did everyone forget about running their engine at 1100-1200 rpm on the ground?

Tell them why Tim.

Patrick Thyssen 

One day I  will fly.



--- On Thu, 3/5/09, McGANN, Ron <ron.mcgann(at)baesystems.com> wrote:

[quote]From: McGANN, Ron <ron.mcgann(at)baesystems.com>

Subject: RE: RV10-List: Leaning For Taxi

To: rv10-list(at)matronics.com

Date: Thursday, March 5, 2009, 3:34 PM



[quote]--> RV10-List message posted by: "McGANN, Ron"

<ron.mcgann(at)baesystems.com>



This is an intriguing thread.  I've never heard of leaning during taxi.

(A sheltered life I guess!)  Looking forward to some more opinions on

this one - will be doing some taxi tests this weekend and bedding the

brakes.



Now VH-XRM on the  Australian register.  No longer a kit!!



Cheers,

Ron - can almost taste it!!

 



--

pitts_pilot(at)bellsouth.
Guest

Posted: Thu Mar 05, 2009 4:07 pm Post subject: Leaning For Taxi

And if you still have a problem with fouling plugs put REM 39s in the 

lower holes.

Linn



Tim Olson wrote:

 	  Quote: 	
		   



 That sounds familiar. 



 Also, another step that helps with the plugs that I've heard

 over the years is that before you shut the engine down, you should

 run it up to at least 1200RPM (or was it 1800?) for about 15-20

 seconds while leaning it as far as possible...trying to get

 the EGT's back up a bit and burn off any lead right before

 you kill the engine.  Then power down to idle, lean to cut-off,

 and that helps keep things clean too.



 Tim Olson - RV-10 N104CD - Flying

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Thu Mar 05, 2009 7:38 pm Post subject: Leaning For Taxi

Don't think I have seen such an animal. Champion doesn't list such a 

heat range. REM38E is the recommended, REM40E is okay. They don't 

mention for the Comanche 260(same engine as RV-10) the REM37BY extended 

nose plug, which I know is approved for the same cylinders in the O-360 

and IO-360. Other than fine wire plugs, it would be the most resistant 

to fouling.



linn wrote:

 	  Quote: 	
		   



 And if you still have a problem with fouling plugs put *REM 39s* in 

 the lower holes.

 Linn



 Tim Olson wrote:

> 

>

> That sounds familiar. 

>

> Also, another step that helps with the plugs that I've heard

> over the years is that before you shut the engine down, you should

> run it up to at least 1200RPM (or was it 1800?) for about 15-20

> seconds while leaning it as far as possible...trying to get

> the EGT's back up a bit and burn off any lead right before

> you kill the engine.  Then power down to idle, lean to cut-off,

> and that helps keep things clean too.

>

> Tim Olson - RV-10 N104CD - Flying 




	


--

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Thu Mar 05, 2009 7:56 pm Post subject: Leaning For Taxi

I did switch to fine wires at something just under 200 hours.

They work well.  The massive electrode ones ran well for me.

With aggressive leaning, I've never had to miss a takeoff for

fouled plugs.  But, the fine wires stay cleaner. The others

were fine although they don't last as long.

Tim Olson - RV-10 N104CD - Flying

Kelly McMullen wrote:

 	  Quote: 	

 Don't think I have seen such an animal. Champion doesn't list such a 

 heat range. REM38E is the recommended, REM40E is okay. They don't 

 mention for the Comanche 260(same engine as RV-10) the REM37BY extended 

 nose plug, which I know is approved for the same cylinders in the O-360 

 and IO-360. Other than fine wire plugs, it would be the most resistant 

 to fouling.

 linn wrote:

> 

>

> And if you still have a problem with fouling plugs put *REM 39s* in 

> the lower holes.

> Linn

>

> Tim Olson wrote:

>> 

>>

>> That sounds familiar. 

>>

>> Also, another step that helps with the plugs that I've heard

>> over the years is that before you shut the engine down, you should

>> run it up to at least 1200RPM (or was it 1800?) for about 15-20

>> seconds while leaning it as far as possible...trying to get

>> the EGT's back up a bit and burn off any lead right before

>> you kill the engine.  Then power down to idle, lean to cut-off,

>> and that helps keep things clean too.

>>

>> Tim Olson - RV-10 N104CD - Flying 

>

pitts_pilot(at)bellsouth.
Guest

Posted: Thu Mar 05, 2009 8:12 pm Post subject: Leaning For Taxi

Thanks Kelly!  My Alzheimer's must be getting worse.  It's the REM37BY that I was thinking of!!!!

 Linn

 do not archive.

 

 

 Kelly McMullen wrote: [quote]--> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com> (kellym(at)aviating.com)   

   

 Don't think I have seen such an animal. Champion doesn't list such a heat range. REM38E is the recommended, REM40E is okay. They don't mention for the Comanche 260(same engine as RV-10) the REM37BY extended nose plug, which I know is approved for the same cylinders in the O-360 and IO-360. Other than fine wire plugs, it would be the most resistant to fouling.   

   

 linn wrote:   

    	  Quote: 	
		  --> RV10-List message posted by: linn <pitts_pilot(at)bellsouth.net> (pitts_pilot(at)bellsouth.net)     

     

 And if you still have a problem with fouling plugs put *REM 39s* in the lower holes.     

 Linn     

     

 Tim Olson wrote:     

      	  Quote: 	
		  --> RV10-List message posted by: Tim Olson <Tim(at)myrv10.com> (Tim(at)myrv10.com)       

       

 That sounds familiar.        

       

 Also, another step that helps with the plugs that I've heard       

 over the years is that before you shut the engine down, you should       

 run it up to at least 1200RPM (or was it 1800?) for about 15-20       

 seconds while leaning it as far as possible...trying to get       

 the EGT's back up a bit and burn off any lead right before       

 you kill the engine.  Then power down to idle, lean to cut-off,       

 and that helps keep things clean too.       

       

 Tim Olson - RV-10 N104CD - Flying 	
     

     

     

     

     

   

Checked by AVG - www.avg.com 



  	
 [b]

jcumins(at)jcis.net
Guest

Posted: Fri Mar 06, 2009 12:52 pm Post subject: Leaning For Taxi

I do agree with leaning during taxi. But also spend the big bucks and get a

set of fine wire plugs they will last almost the full life of the engine and

are not as apt to fowl if you forget to lean.  Once we did that in the

IO540K series engine we have had perfect run ups with and with out leaning.



When I do the engine on the 10 it will for sure have the fine wire p[lugs in

it.  I also like the looks of the g3 mfd electronic ignition system that

will work on either bendix or slick mages.



John G. Cumins

President

 

JC'S Interactive Systems

2499 B1 Martin Rd

Fairfield Ca 94533

707-425-7100

707-425-7576 Fax

 

Your Total Technology Solution Provider



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