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Monowheel outrigger double downlock spring mod

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gcrowder2

Joined: 09 Jan 2006
Posts: 136
Location: Golden, Colorado USA

Posted: Mon Mar 16, 2009 8:47 am Post subject: Monowheel outrigger double downlock spring mod

  Just added a second spring to my downlock mechanism.  Pretty easy mod and now provides a resounding audible clunk

 confirmation when lowering the gear.  The audible confirmation with just the stock springs was getting somewhat passive and difficult to confirm.

  

                                                                  Glenn

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fklein(at)orcasonline.com
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Posted: Mon Mar 16, 2009 10:54 am Post subject: Monowheel outrigger double downlock spring mod

Glenn...very nice...now why didn't I think of that?...yu b a clever fella...



Fred

do not achive



On Mar 16, 2009, at 9:46 AM, glenn crowder wrote:

[quote]  Just added a second spring to my downlock mechanism.  Pretty easy mod and now provides a resounding audible clunk confirmation when lowering the gear. 

[b]

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gcrowder2

Joined: 09 Jan 2006
Posts: 136
Location: Golden, Colorado USA

Posted: Mon Mar 16, 2009 5:11 pm Post subject: Monowheel outrigger double downlock spring mod

Hey Fred C thanks.  No negatives yet and provides a warm and fuzzy feeling on short final that all is well.  I also replaced the



original nylon legs with MDS filled nylon legs purchased from McMaster.  I am experimenting with 1/4" longer legs to reduce the



rocking even more.  Now there is no wing rocking at all until the TW is lifted and then its only there for a couple seconds before



rotation.  Much improved on landing as well as soon as the main is down C the OR wheels are down as well preventing any side



loading or weight transfer from getting started.  This does add a slight preload to the legs but they become HIGHLY loaded if



any side to side weight transfer starts up with the standard length legs.  I really like it so far and can taxi up to 45 mph with



no rocking whatsoever but YMMV.



 



                                                                    Glenn

 

From: fklein(at)orcasonline.com

To: europa-list(at)matronics.com

Subject: Re: Monowheel outrigger double downlock spring mod

Date: Mon C 16 Mar 2009 11:52:28 -0700



Glenn...very nice...now why didn't I think of that?...yu b a clever fella..

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fklein(at)orcasonline.com
Guest

Posted: Mon Mar 16, 2009 6:04 pm Post subject: Monowheel outrigger double downlock spring mod

On Mar 16, 2009, at 6:09 PM, glenn crowder wrote:

 	  Quote: 	
		  No negatives yet and provides a warm and fuzzy feeling on short final that all is well.  	




Hey Glenn...sounds good...I've always been troubled by the eccentric loading on the bolt which holds the spring (on the original). 

 	  Quote: 	
		  I also replaced the original nylon legs with MDS filled nylon legs purchased from McMaster.  I am experimenting with 1/4" longer legs to reduce the

rocking even more.  Now there is no wing rocking at all until the TW is lifted and then its only there for a couple seconds before rotation.  Much improved on landing as well as soon as the main is down, the OR wheels are down as well preventing any side loading or weight transfer from getting started. 	




Now are those "MDS filled" nylon legs a different composition from the originals?

BTW, how many ponies in that Soob of yours at this point? Weren't you bumping up the hp?

Fred



 [quote][b]

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gcrowder2

Joined: 09 Jan 2006
Posts: 136
Location: Golden, Colorado USA

Posted: Wed Mar 18, 2009 11:53 am Post subject: Monowheel outrigger double downlock spring mod

Somebody on the forum recommended the MDS legs.  They do seem springier C maybe just

 because they're new.  I really like the longer length!

  

 No recent upgrades to my engine although my engine guy really wants to do a complete

 roller cam with roller lifters.  He says this will add 15 hp and not create any more heat

 since what we're actually doing is eliminating friction.  The rollers allow him to modify the cam profile a bit to take advantage.  Will probably go to the MPFI system at the same time possibly adding 5-10 over my current single point Ellison throttle body system.

  

 Wintertime project was to get my dual electrical system installed and working.  

  

 Springtime project will be to get the exhaust augmentation system going C hopefully reducing cooling drag significantly.  Attached a pic.

  

                                                    Glenn

  

  From: fklein(at)orcasonline.com

To: europa-list(at)matronics.com

Subject: Re: Monowheel outrigger double downlock spring mod

Date: Mon C 16 Mar 2009 19:04:03 -0700

  On Mar 16 C 2009 C at 6:09 PM C glenn crowder wrote:

  	  Quote: 	
		  No negatives yet and provides a warm and fuzzy feeling on short final that all is well.  	
 



 Hey Glenn...sounds good...I've always been troubled by the eccentric loading on the bolt which holds the spring (on the original). 

 



  	  Quote: 	
		  I also replaced the original nylon legs with MDS filled nylon legs purchased from McMaster.  I am experimenting with 1/4" longer legs to reduce the

rocking even more.  Now there is no wing rocking at all until the TW is lifted and then its only there for a couple seconds before rotation.  Much improved on landing as well as soon as the main is down C the OR wheels are down as well preventing any side loading or weight transfer from getting started.  	




 



 Now are those "MDS filled" nylon legs a different composition from the originals?

 



 BTW C how many ponies in that Soob of yours at this point? Weren't you bumping up the hp?

 



 Fred



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frans(at)paardnatuurlijk.
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Posted: Wed Mar 18, 2009 1:21 pm Post subject: Monowheel outrigger double downlock spring mod

glenn crowder wrote:

 	  Quote: 	
		   No recent upgrades to my engine although my engine guy really wants

 to do a complete

 

 roller cam with roller lifters.  He says this will add 15 hp and not

 create any more heat

 

 since what we're actually doing is eliminating friction.  The rollers

 allow him to modify the cam profile a bit to take advantage.


	


If you modify the cam profile, you are not just eliminating friction.

You take advantage of the lessened friction to introduce a more

aggresive cam profile, so the engine can digest more air and fuel. This

addition of more air and fuel will certainly cause more heat. If you

burn something, heat will develop. Burn more, and you will get more

heat. 

Think about this way: If the roller lifters save 15 hp, this means that

the old lifters would somehow "consume" 15 hp. 15 hp is a tremendous

amount of heat, the lifters would have melted if they were consuming

these 15 hp's... So, this was obviously not the case, so these 15 hp's

are coming from something else. 



-- 

Frans Veldman

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gcrowder2

Joined: 09 Jan 2006
Posts: 136
Location: Golden, Colorado USA

Posted: Wed Mar 18, 2009 8:47 pm Post subject: Monowheel outrigger double downlock spring mod

Hi Frans C my engine guy has been building racing engines most of his life and has been

 doing Soob aeroconversions for 6 yrs C has his own dyno and seems to know his stuff.

 I have never heard of an unhappy customer so I tend to believe him when he says a

 complete roller cam and rockers (not just the rockers) will add 15 hp.  15 hp seems 

 reasonable to me on a 150 hp engine.  The camshaft requires a different profile to work

 with the roller lifters and lift or duration will not be modified so as to maintain good idle 

 characteristics.  It is possible to open and close the valves quicker but overall duration

 remains the same.  Less friction = less heat or if you look at it another way you can 

 burn less fuel to get the same power so again less heat.

  

                                                     Glenn

 

 	  Quote: 	
		   Date: Wed C 18 Mar 2009 22:21:00 +0100

 From: frans(at)paardnatuurlijk.nl

 To: europa-list(at)matronics.com

 Subject: Re: Monowheel outrigger double downlock spring mod

 

 --> Europa-List message posted by: Frans Veldman <frans(at)paardnatuurlijk.nl>

 

 glenn crowder wrote:

 > No recent upgrades to my engine although my engine guy really wants

 > to do a complete

 > 

 > roller cam with roller lifters. He says this will add 15 hp and not

 > create any more heat

 > 

 > since what we're actually doing is eliminating friction. The rollers

 > allow him to modify the cam profile a bit to take advantage.

 

 If you modify the cam profile C you are not just eliminating friction.

 You take advantage of the lessened friction to introduce a more

 aggresive cam profile C so the engine can digest more air and fuel. This

 addition of more air and fuel will certainly cause more heat. If you

 burn something C heat will develop. Burn more C and you will get more

 heat. 

 Think about this way: If the roller lifters save 15 hp C this means that

 the old lifters would somehow "consume" 15 hp. 15 hp is a tremendous

 amount of heat C the lifters would have melted if they were consuming

 these 15 hp's... So C this was obviously not the case C so these 15 hp's

 are coming from something else. 

 

 -- 

 Frans Veldm=======================

&g==================
	


[quote] 

 

 

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