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701 Nose Strut Bearing Mod

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dougsnash

Joined: 14 Apr 2008
Posts: 281

Posted: Fri Sep 02, 2011 2:34 am Post subject: 701 Nose Strut Bearing Mod

John, I think you'll find this is just the "newness" of your plane.  Mine was stiff the first few flights too but by the end of the test period it was nice and smooth.  Make sure you've got some lube on the nylon bearings and it will probably work its way in before too long.

  

 Doug MacDonald

 CH-701, NW Ontario, Canada

  

 Do Not Archive

 



   

From: John Marzulli <john.marzulli(at)gmail.com>

To: zenith701801-list(at)matronics.com

Sent: Friday, September 2, 2011 3:54:16 AM

Subject: Zenith701801-List: 701 Nose Strut Bearing Mod



 I am seriously considering adding a rolling bearing to my nose strut to reduce friction while flying.



Looking at ACS it was unclear if I wanted a DP ( my guess ) or DSP bearing. Anyone have the part number?



Thinking about it more, since I have a gap between the strut stop plate and the support shelf, adding a 2" ID thrust bearing between the two would be the easiest and most foolproof way. Has anyone done this or found such a thrust bearing?

Thanks,

John Marzulli



http://MarzulliPhoto.net/

http://701Builder.blogspot.com/

[quote]



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[b]

NYTerminat(at)aol.com
Guest

Posted: Fri Sep 02, 2011 5:01 am Post subject: 701 Nose Strut Bearing Mod

I agree with Doug

 Bob Spudis

  

  In a message dated 9/2/2011 6:34:37 A.M. Eastern Daylight Time,  dougsnash(at)yahoo.com writes:

  	  Quote: 	
		        John, I think you'll find    this is just the "newness" of your plane.  Mine was stiff the first few    flights too but by the end of the test period it was nice and smooth.     Make sure you've got some lube on the nylon bearings and it will probably work its way in before too    long.

    

   Doug MacDonald

   CH-701, NW Ontario,    Canada

    

   Do Not Archive

   



         

From: John Marzulli    <john.marzulli(at)gmail.com>

To:    zenith701801-list(at)matronics.com

Sent: Friday, September 2, 2011 3:54:16    AM

Subject:    701 Nose Strut Bearing Mod



   I am seriously considering adding a rolling bearing to my    nose strut to reduce friction while flying.



Looking at ACS it was    unclear if I wanted a DP ( my guess ) or DSP bearing. Anyone have the part    number?



Thinking about it more, since I have a gap between the strut    stop plate and the support shelf, adding a 2" ID thrust bearing between the    two would be the easiest and most foolproof way. Has anyone done this or found    such a thrust bearing?

Thanks,

John    Marzulli



http://MarzulliPhoto.net/

http://701Builder.blogspot.com/

 	  Quote: 	
		  



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llow target=_blank>http://www.matronics.com/contribution







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  [quote][b]

ronlee

Joined: 25 Dec 2006
Posts: 141

Posted: Fri Sep 02, 2011 6:55 am Post subject: Re: 701 Nose Strut Bearing Mod

One would think Zenith would have found a fix to this shortcoming by now.

I put nylon sliders on mine and it helps considerably but is still heavy and does not move freely as it should. Even when I first flew the demo 701 the stiff rudder got my attention and it had tons of time on it. There has to be a better way. Did they use the same system on the 750? If they did it shows they don't care as it has been a topic of disappointment on the 701 for a long time so they are certainly well aware of it. In spite of this I do love my 701 very much.

_________________
Ron Lee
Tucson, Arizona

dougsnash

Joined: 14 Apr 2008
Posts: 281

Posted: Fri Sep 02, 2011 7:32 am Post subject: 701 Nose Strut Bearing Mod

Ron, it might be a "pilot preference" thing with regard to the rudder feel.  I was happy with the rudder feel on the demo plane and am completely satisfied with the feel of my plane.

  

 As for the 750, there is some difference on how the lower bearing fits together.  The lower bearing block is a black plastic material and has the "V" block built into it.  There is no metal to metal contact in this setup.  I only have the one demo flight for time on a 750 and don't recal there being any rudder feel issues.  Additionally, I found the 750 to be more of a "feet flat on the floor" plane that the 701.  Not the the 701 has bad adverse yaw, I just found the 750 that much better.

  

 Doug MacDonald

 CH-701 from scratch

 NW Ontario, Canada

  

 Do Not Archive



--- On Fri, 9/2/11, ronlee <rlee468(at)comcast.net> wrote:



  	  Quote: 	
		  

From: ronlee <rlee468(at)comcast.net>

Subject: Re: 701 Nose Strut Bearing Mod

To: zenith701801-list(at)matronics.com

Received: Friday, September 2, 2011, 9:55 AM



 --> Zenith701801-List message posted by: "ronlee" <rlee468(at)comcast.net (rlee468(at)comcast.net)>



One would think Zenith would have found a fix to this shortcoming by now.

I put nylon sliders on mine and it helps considerably but is still heavy and does not move freely as it should. Even when I first flew the demo 701 the stiff rudder got my attention and it had tons of time on it. There has to be a better way. Did they use the same system on the 750? If they did it shows they don't care as it has been a topic of disappointment on the 701 for a long time so they are certainly well aware of it. In spite of this I do love my 701 very much.



--------

Ron Lee

Tucson, Arizona

	
 [quote][b]

klondike(at)megalink.net
Guest

Posted: Fri Sep 02, 2011 7:41 am Post subject: 701 Nose Strut Bearing Mod

Not to "re-invent the wheel" but---- have you done away with the "V" notch 

the strut sits in while in flight?     If not,  lift the nose off the ground 

and watch how this assembly flex(s).   Terrible!!!!!    After seeing this, 

I did away with the "V" notch and made mine without the notch.  (many years 

ago)

Fritz

---

mksoucy(at)yahoo.com
Guest

Posted: Fri Sep 02, 2011 7:52 am Post subject: 701 Nose Strut Bearing Mod

If I remember right, Fred S. Poor had the same solution and it worked out great for him.



--- On Fri, 9/2/11, fritz <klondike(at)megalink.net> wrote:

 [quote]

From: fritz <klondike(at)megalink.net>

Subject: Re: Re: 701 Nose Strut Bearing Mod

To: zenith701801-list(at)matronics.com

Date: Friday, September 2, 2011, 11:37 AM



 --> Zenith701801-List message posted by: "fritz" <klondike(at)megalink.net (klondike(at)megalink.net)>



Not to "re-invent the wheel" but---- have you done away with the "V" notch the strut sits in while in flight?     If not,  lift the nose off the ground and watch how this assembly flex(s).   Terrible!!!!!    After seeing this, I did away with the "V" notch and made mine without the notch.  (many years ago)

Fritz

---

stepinwolf

Joined: 21 Jan 2008
Posts: 133
Location: Canada

Posted: Fri Sep 02, 2011 7:53 am Post subject: 701 Nose Strut Bearing Mod

I wonder if anyone has removed the notches completely, making it more like 

the Cessna's and Piper's we all learned to fly on.  I can't see myself 

landing any aircraft with out both feet feverishly working the rudders, so 

centering the nose wheel would not be needed,  nor be an issue for me.



Robert

---

_________________
Long wing + vga's, = lo & slo

klondike(at)megalink.net
Guest

Posted: Fri Sep 02, 2011 8:24 am Post subject: 701 Nose Strut Bearing Mod

yes and replacing the "old metal V notch" with "Teflon" without the notch. 

This gives  a lot more surface are for the "pin" which goes through the nose 

strut to slide on.



If new on site,  check archives,  should be a lot of info there also.

---

craig(at)craigandjean.com
Guest

Posted: Fri Sep 02, 2011 9:27 am Post subject: 701 Nose Strut Bearing Mod

The 750 uses the design from the 601/650: a large black/gray nylon block

with the V notch formed by the nylon. So no steel on aluminum. Having had a

601 kit in the past I ordered the 601 parts and adapted them for my 701.

Haven't flown it yet.



-- Craig



--

klondike(at)megalink.net
Guest

Posted: Fri Sep 02, 2011 10:53 am Post subject: 701 Nose Strut Bearing Mod

I'd get rid of the "V" notch, no matter what I used for material.



Fritz

---

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