Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Handpropping a 912

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

kitfoxjunky(at)decisionla
Guest

Posted: Mon Feb 09, 2009 2:33 pm Post subject: Handpropping a 912

Anyone ever do this successfully?   Was looking to do some ski flying, but spending the winter on a frozen lake with a dead battery does not seem appealing.  I think if heard of someone handpropping a 912...but never a 912s. 

 

Any feedback? 

 

Gary Walsh

 KF IV  Anphib 912S

 C-GOOT

 www.decisionlabs.com/kitfox

 

 do not archive

  [quote][b]

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Mon Feb 09, 2009 7:31 pm Post subject: Re: Handpropping a 912

Do not try to hand prop a 912ULS with it's compression ratio. Like anything else. You may get away with it or you may not. What's your hand worth to you?

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Tue Feb 10, 2009 6:06 am Post subject: Handpropping a 912

Don't hand prop a 912 ! Again to refer to my Rotax class at Lockwood ,Dean (the instructor) said he had heard of two guys that successfully did it but both said they would NEVER attempt it again !. Keep in mind you have to get the prop to 200 rpm before the ignition kicks in. Odds are you will stick your hands into the just started engine as you have to get the prop moving so fast and it raps up to 1800 rpm like now !. Talk about a meat cleaver!

                                           

                                                          Dick Maddux

                                                          Fox 4-1200

                                                          912 Ul

                                                          Pensacola,Fl 

 The year's hottest artists on the red carpet at the Grammy Awards.  AOL Music takes you there.

  [quote][b]

matronics(at)bob.brennan.
Guest

Posted: Tue Feb 10, 2009 6:28 am Post subject: Handpropping a 912

Gary - if you're worried  about getting stuck on a frozen lake with a dead battery - carry a spare  battery! 

  

 As others have advised,  handpropping could spoil your day, if not your life.

  

  

 Bob Brennan - N717GB

 ELSA Repairman, inspection rated

 1991 UK Model 2 ELSA Kitfox

 Rotax 582 with 3 blade prop

 Wrightsville Pa 

  

  

             Subject:              Handpropping a    912        From:              kitfoxjunky(at)decisionlabs.com ([email]kitfoxjunky(at)decisionlabs.com?subject=Re:%20Handpropping%20a%20912&replyto=OFC7FF6EF1.B6B0049C-ON85257558.007BA9E9-85257558.007BB43F(at)decisionlabs.com[/email])        Date:              [b]Mon Feb 09 - 2:33        PM[/b] [quote] 	  Quote: 	
		  Anyone ever do this successfully?   Was looking to do some ski flying, but 

spending the winter on a frozen lake with a dead battery does not seem 

appealing.  I think if heard of someone handpropping a 912...but never a 

912s.



Any feedback?



Gary Walsh

KF IV  Anphib 912S

C-GOOT

www.decisionlabs.com/kitfox



do not archive

	
[b]

kitfoxfugit(at)yahoo.com
Guest

Posted: Tue Feb 10, 2009 9:40 pm Post subject: Handpropping a 912

Gary Walsh asked:  Anyone ever do this successfully?   Was looking to do some ski flying, but spending the winter on a frozen lake with a dead battery does not seem appealing.  I think if heard of someone handpropping a 912...but never a 912s.

I have hand propped a 912UL when the battery was low.  It cannot be completely dead, though; it needs some battery to excite the alternator.  If you are used to Continentals or Lycomings, watch out!  Instead of sputtering to life it roars instantly to life at a fast RPM, and three blades come around faster than two.  Also, you should not turn it backwards to try to unflood it.



JA KF IV (at) O70

eskflyer

Joined: 24 May 2007
Posts: 44
Location: AK

Posted: Wed Feb 11, 2009 7:17 am Post subject: Re: Handpropping a 912

My fox had a 582 and three blade prop . Hand propped it many times . no problem after you pull it threw you wait to put your hand back up to pull it around again . If you dont you a dumb-ass and dont like your hands very much. For the ones of you afraid to hand prop a lycosaurus or continental we do it all the time . if done correctly there is no issue . use your head and be safe fly safe and have fun . 



3579A

_________________
FLY FUN FLY LOW FLY SLOW
John Perry
Kitfox 2 N718PD
582 cbox 2:62-1 IVO IFA
1220 Full Lotus

Fox5flyer
Guest

Posted: Wed Feb 11, 2009 7:33 am Post subject: Handpropping a 912

Wasn't the question/thread regarding hand propping a 912x?

Deke Morisse

Mikado Michigan

S5/Subaru/CAP 402+ TT

"The aim of an argument or discussion should not be victory, but progress."

- Joseph Joubert

 	  Quote: 	
		   My fox had a 582 and three blade prop . Hand propped it many times . no 

 problem after you pull it threw you wait to put your hand back up to pull 

 it around again . If you dont you a dumb-ass and dont like your hands very 

 much. For the ones of you afraid to hand prop a lycosaurus or continental 

 we do it all the time . if done correctly there is no issue . use your 

 head and be safe fly safe and have fun .

 John Perry

eskflyer

Joined: 24 May 2007
Posts: 44
Location: AK

Posted: Wed Feb 11, 2009 1:19 pm Post subject: Re: Handpropping a 912

Keep in mind you have to get the prop to 200 rpm before the ignition kicks in. Odds are you will stick your hands into the just started engine as you have to get the prop moving so fast and it raps up to 1800 rpm like now !. Talk about a meat cleaver! 



Yep he was talking about a 912 . the 582 idles at 2000 rpm hmmmmm it raps up faster than a 912 does . I have had great success at handproping it many many times . battery dead and or the starter died . It had the 3 blade 68" gsc PROP. 



3579A out

_________________
FLY FUN FLY LOW FLY SLOW
John Perry
Kitfox 2 N718PD
582 cbox 2:62-1 IVO IFA
1220 Full Lotus

helili(at)chahtatushka.ne
Guest

Posted: Wed Feb 11, 2009 2:36 pm Post subject: Handpropping a 912

The first 3 aircraft I ever flew didn't have starters, batteries, or

generators.  The only way to get them started was handpropping, and yes, it

can be done easily on Continental and Lycoming engines.  The worst engine

I've hand propped was a Continental IO-540 on a C-185 on straight floats

when it was still in the water.  Areal PIA propping it standing behind the

prop on floats.



John Hart

KF IV, NSI Subaru

Wiloburton, OK



--

rjdaugh

Joined: 30 Aug 2006
Posts: 195

Posted: Wed Feb 11, 2009 4:21 pm Post subject: Handpropping a 912

Yup, 2000 rpm is faster than 1800 rpm, but I think we are talking about how

quickly the engine gets up to that rpm.  The 912S is a higher torque engine.

I bet it gets there faster.  Thus the need for extreme caution.



I still might try if faced with a cold night and/or a long hike.



Randy

Series 5/7, 912S Warpdrive

--

_________________
Randy
Kitfox 5/7 912S
Black Hills, South Dakota

brianm(at)snolab.ca
Guest

Posted: Wed Feb 11, 2009 5:21 pm Post subject: Handpropping a 912

Hi



My instructor has hand propped his 912 many times with success. He brings

the prop slowly to the 12 o'clock position and pulls down. He stands next to

the cowl between the engine and door. I personally haven't tried it but it

looks pretty straight forward at least when he does it.



Brian

speedster 912

85% complete 



--

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed Feb 11, 2009 7:12 pm Post subject: Handpropping a 912

A friend had a PA 12 on floats..  no starter, no gen.

Hand propped it after pushing off the wharf or while standing on a mooring

line.  Once the engine caught he would steer it to deeper water by leaning

in and pushing the rudder pedals with his hand.  Once in clear water he

would then jump in.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

vetdrem

Joined: 20 Nov 2007
Posts: 62

Posted: Wed Feb 11, 2009 7:20 pm Post subject: Re: Handpropping a 912

I handpropped my 912ul.  At the time, it was handprop or walk home.  I thought that the starter solenoid had bit the dust, but it turned out to be a bad connector.  

I used the same procedure that I use to start the A-65 in my Taylorcraft.  Have someone in the plane holding the brakes and operating the throttle.  Prop at the point of coming up on the compression stroke, palms flat on the blade  (no fingers over trailing edge or behind the blade) rapidly pull down on the blade while backing away from the prop.  



The rotax fired right away, and I was well clear of the blades.  



It isn't something that I would do for the heck of it, but at least I know that I can, and if due diligence is exercised, it is pretty safe.



Louie

model 3   912 ul

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed Feb 11, 2009 7:41 pm Post subject: Handpropping a 912

Are you saying you stand in front of the plane while propping?



I guess the person riding the brakes was a real close friend.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Fox5flyer
Guest

Posted: Thu Feb 12, 2009 3:49 am Post subject: Handpropping a 912

Yikes!  Sounds like a big problem waiting for a good time to happen.

Deke

do not archive



---

Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Thu Feb 12, 2009 4:39 am Post subject: Handpropping a 912

John,

  I assure you hand propping a Rotax 912 is NOTHING like a Lycoming or Continental engine. I too have hand propped many many Cubs,Champs and even Wacos,Monocoupes,etc.I owned a Luscombe for 5 years and of course that is the only way you could start it. 

  All of these propellers have weight and the engine is relatively slow starting. 912's generally have extremely light weight props so no inertia. The engine is either on at 1800-2000 rpm or off. Can't say anything about starting a two stroke by hand as I have never had one.

  As they teach in class and common sense dictates, Don't do it!

                                                        Dick Maddux

                                                        Fox4-1200

                                                        Rotax 912UL

                                                        Pensacola,Fl

 The year's hottest artists on the red carpet at the Grammy Awards.  AOL Music takes you there.

  [quote][b]

helili(at)chahtatushka.ne
Guest

Posted: Thu Feb 12, 2009 5:42 am Post subject: Handpropping a 912

I was taught 50 years ago to stand in front of the A/C to hand prop an

engine on a land plane, and behind the prop on floats.  I've hand propped a

J-3, a Luscombe, and a Taylorcraft with an A-65 Continental without anyone

in the cockpit many, many times.  The instructors wouldn't solo you if you

couldn't prop the aircraft without any help.  The instructors back then

usually were either old guys that had been flying and flown light aircraft

without electrical systems before WW II, or younger guys that were WW II

veterans.



John Hart

KF IV, NSI Subaru

Wilburton, OK   



--

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum