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912ULS Water Inlet Part 922 218

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Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Mon Mar 29, 2010 7:24 am Post subject: 912ULS Water Inlet Part 922 218

Listers,



I've installed a 912 in my plane using the Rotax Ring Mount.  The engine seems much less prone to vibration and kickback at startup and shutdown.



However, I do have a problem and I'm looking for solutions:



The water inlet to the water pump is a 90 degree fitting.  This puts it in line with the Ring Mount with about 2 inches clearance (maybe less).  I have to run my hose from there to my radiator and to get it to fit, I now have about a 1/2 inch or more offset on the hose in order to clear the backside of the Ring Mount.  I don't like this as it puts stress on the rubber hose.



Any ideas?  Does Rotax make an inlet with perhaps a 45 degree turn instead of the 90 degree?  Any help appreciated.



Tommy Walker in Alabama

N8701T

_________________
Tommy Walker
N25A - Anniston, AL

hgmckay

Joined: 23 May 2006
Posts: 397

Posted: Mon Mar 29, 2010 10:05 am Post subject: 912ULS Water Inlet Part 922 218

Tommy,

Do you have the 912 Installation Manual? If so look on page 57 of the 

manual. You will see figures 27 and 28 showing the water pump inlet. You 

will see that there are six positions for this inlet. See if one of them 

meet your needs. If you don't have this manual get one!



Hugh McKay

Allegro 2000

Rotax 912 UL

N661WW



--------------------------------------------------

From: "Tommy Walker" <twalker(at)cableone.net>

Sent: Monday, March 29, 2010 11:24 AM

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

Subject: 912ULS Water Inlet Part 922 218



 	  Quote: 	
		   

 <twalker(at)cableone.net>



 Listers,



 I've installed a 912 in my plane using the Rotax Ring Mount.  The engine 

 seems much less prone to vibration and kickback at startup and shutdown.



 However, I do have a problem and I'm looking for solutions:



 The water inlet to the water pump is a 90 degree fitting.  This puts it in 

 line with the Ring Mount with about 2 inches clearance (maybe less).  I 

 have to run my hose from there to my radiator and to get it to fit, I now 

 have about a 1/2 inch or more offset on the hose in order to clear the 

 backside of the Ring Mount.  I don't like this as it puts stress on the 

 rubber hose.



 Any ideas?  Does Rotax make an inlet with perhaps a 45 degree turn instead 

 of the 90 degree?  Any help appreciated.



 Tommy Walker in Alabama

 N8701T



 --------

 Tommy Walker

 N8701  -  Anniston, AL





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=292221#292221

craig(at)craigandjean.com
Guest

Posted: Mon Mar 29, 2010 10:53 am Post subject: 912ULS Water Inlet Part 922 218

Actually as I recall the Zenith manual for the new FWF with the ring mount

tells you to rotate (and reseal) the threaded 90 degree elbow in the plate.

I think Tommy's complaint is the 90 degree angle, not the orientation but

let's see what he says.



-- Craig 



--

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Tue Mar 30, 2010 4:51 am Post subject: Re: 912ULS Water Inlet Part 922 218

Craig,



Yes, that is my complaint.  A 45 degree ell would work fine.  No matter how I turn the inlet, it runs directly toward the Ring Mount.



Hugh,



Yes, I have the Rotax manuals and refer to them often.  Turning the inlet still doesn't avoid the Ring Mount.  



Surely someone has run into this problem before.  Zenith instructions are to run the hose in front of the Ring Mount, but there's no room because of the two left side cylinder head hoses in this area.



Thanks for the comments.



Tommy

_________________
Tommy Walker
N25A - Anniston, AL

flyadive(at)gmail.com
Guest

Posted: Tue Mar 30, 2010 5:53 am Post subject: 912ULS Water Inlet Part 922 218

Hello Tommy:



One trick I was taught many years ago was: "If you can't do it with a

45... You can do ANYTHING with two 45's."

The swivel combinations with two 45's are almost endless.

And that way you can keep a straight fitting on the hose.



Barry



On Mon, Mar 29, 2010 at 11:24 AM, Tommy Walker <twalker(at)cableone.net> wrote:

 	  Quote: 	
		   



 Listers,



 I've installed a 912 in my plane using the Rotax Ring Mount.  The engine seems much less prone to vibration and kickback at startup and shutdown.



 However, I do have a problem and I'm looking for solutions:



 The water inlet to the water pump is a 90 degree fitting.  This puts it in line with the Ring Mount with about 2 inches clearance (maybe less).  I have to run my hose from there to my radiator and to get it to fit, I now have about a 1/2 inch or more offset on the hose in order to clear the backside of the Ring Mount.  I don't like this as it puts stress on the rubber hose.



 Any ideas?  Does Rotax make an inlet with perhaps a 45 degree turn instead of the 90 degree?  Any help appreciated.



 Tommy Walker in Alabama

 N8701T



 --------

 Tommy Walker

 N8701  -  Anniston, AL





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=292221#292221

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Tue Mar 30, 2010 7:20 am Post subject: Re: 912ULS Water Inlet Part 922 218

I wonder if I could take two 45's and a short 2 inch copper fitting and make it work.  Does anyone know if a sweated joint would hold up?  Each end of the fitting would be clamped to a rubber hose (thinking out loud).



Thanks,



 	  flyadive(at)gmail.com wrote: 	
		  Hello Tommy:



One trick I was taught many years ago was: "If you can't do it with a

45... You can do ANYTHING with two 45's."

The swivel combinations with two 45's are almost endless.

And that way you can keep a straight fitting on the hose.



Barry



	
[/quote]

_________________
Tommy Walker
N25A - Anniston, AL

craig(at)craigandjean.com
Guest

Posted: Tue Mar 30, 2010 7:53 am Post subject: 912ULS Water Inlet Part 922 218

I don't know if you can put together a solution from these silicon hose

elbows from Pegasus but take a look around their web site:



http://www.pegasusautoracing.com/group.asp?GroupID=COOL22MM



-- Craig 



--

elleryweld(at)aol.com
Guest

Posted: Tue Mar 30, 2010 2:15 pm Post subject: 912ULS Water Inlet Part 922 218

I have some copper sweated fittings on my airplane and they have been working great but one thing I did to keep the hose from coming off is wrap a peice of small copper wire around the fitting end that I was planning on putting my rubber hose on and sweat that wire in place I figured when I tightened the clamp it would give it a good bite so the hose dont slip off  

 

   

  

     Ellery Batchelder Jr.

 

 

 

   --

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Wed Mar 31, 2010 4:29 am Post subject: Re: 912ULS Water Inlet Part 922 218

Thanks for the suggestions folks.  I'm looking at using silver solder to join the fittings.  Craig, I'm looking at the Pegasus site too.  Lots of interesting stuff there.

I have a beading tool borrowed to put a bead in the copper tubing to hold the hose.  ACS sells them for about 55.00 bucks each size.

Plus I'm looking to another solution sent in an off forum email.



Thanks!



Tommy

Do not archive

_________________
Tommy Walker
N25A - Anniston, AL

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Sun May 02, 2010 10:57 am Post subject: Re: 912ULS Water Inlet Part 922 218

Note:  I resized the picture and uploaded it again.  Sorry bout that.



I'm glad that I posted this problem on the Rotax Forum.  Paul Mitchell, the Tecnam dealer in the UK had the perfect fix for my issue.  Paul was coming to SNF and parcel posted it to me when he got here.  I received it the next day and went out to the airport and replaced the stock one with it.  



Ain't it great how folks like Paul will go out of their way to accommodate those of us in the builder community?



Tommy Walker the happy camper

N7462M - Sold

N8701   - Sold

N8701T - Sold

....searching for next project

Sorry the picture is so big.  



 	  Tommy Walker wrote: 	
		  Thanks for the suggestions folks.  I'm looking at using silver solder to join the fittings.  Craig, I'm looking at the Pegasus site too.  Lots of interesting stuff there.

I have a beading tool borrowed to put a bead in the copper tubing to hold the hose.  ACS sells them for about 55.00 bucks each size.

Plus I'm looking to another solution sent in an off forum email.



Thanks!



Tommy

Do not archive

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_________________
Tommy Walker
N25A - Anniston, AL

Last edited by Tommy Walker on Sun May 02, 2010 1:07 pm; edited 1 time in total

craig(at)craigandjean.com
Guest

Posted: Sun May 02, 2010 11:15 am Post subject: 912ULS Water Inlet Part 922 218

So what was the fix? What does it look like and where does he get them from?

Pictures?



-- Craig 



--

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Sun May 02, 2010 12:27 pm Post subject: Re: 912ULS Water Inlet Part 922 218

Hi Craig,



I uploaded a picture with the post.  You may have to go to the forums.matronics website in order to see it.  It was sort of a big picture.  What they did was take a piece of flat stock and some tubing and make a ninety degree El (is that redundant?).  

The picture is too big and your email server may have stripped it out.



Let me know if you still can't see it on the matronics site and I will email a smaller version to you.



Tommy



 	  craig(at)craigandjean.com wrote: 	
		  So what was the fix? What does it look like and where does he get them from?

Pictures?



-- Craig 



--

_________________
Tommy Walker
N25A - Anniston, AL

craig(at)craigandjean.com
Guest

Posted: Sun May 02, 2010 12:53 pm Post subject: 912ULS Water Inlet Part 922 218

Got it, thanks. I wonder how the rest of the world solves the problem.

Wouldn't anyone with the ring mount need a similar solution?



-- Craig 



--

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Sun May 02, 2010 1:09 pm Post subject: Re: 912ULS Water Inlet Part 922 218

I would think so.  Someone said Rotax said to rotate the inlet neck and thread the hose in front of the Ring Mount.  That wouldn't work in my situation.

Oh well....





 	  craig(at)craigandjean.com wrote: 	
		  Got it, thanks. I wonder how the rest of the world solves the problem.

Wouldn't anyone with the ring mount need a similar solution?



-- Craig 



--

_________________
Tommy Walker
N25A - Anniston, AL

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