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Jab3300 Cowlings

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DuaneFamly(at)aol.com
Guest

Posted: Wed Sep 24, 2008 7:51 pm Post subject: Jab3300 Cowlings

Good day....or night....to All,

  

 It's late here so I figure to post this and call it a night. For those that  have the Jab3300 fitted to their aircraft I have a question. I have mounted the  lower cowl...and have placed the upper cowl in place.....but then I started  wondering....I can screw into the fuselage with the rear of the top cowl but  what have people done to secure the front of the top cowl?....I would imagine  the top bolts to the bottom....but what have "those that have gone before" done?  Brackets? Plates?   

 Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru 3300  

Sensenich R64Z N

Ground Adjustable  Prop





Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators.

ptag.dev(at)tiscali.co.uk
Guest

Posted: Wed Sep 24, 2008 11:20 pm Post subject: Jab3300 Cowlings

Hi! Mike  

From one who has “been and done!”  

It is a mandatory requirement in the UK that the top cowl has a pair of permanent clips either side of the spinner(almost under the spinner). The clips are bent in the shape of a letter “L” inverted and pop riveted to the lower cowl so that by depressing the top cowl the short leg of the “L” will engage into a slot on the top cowl. I believe it was as a Jabiru Mod. that mandated it. (all as a result of someone’s cowl departing in flight.) This supplements the standard Jabiru clips with “R” safety clips.  

My Top Cowl installation at the rear  was (and still is with the new Rotax) engaged into four tapered pins set into the firewall. (This eliminates any possibility of rain water accessing the cabin/panel through screw holes) I used four of the Europa tapered door pins with the mating sockets glassed into the underside of the rear of the top cowl.  

I needed ¼” gap between the front of the cowl and the spinner to first engage the tapered pins and drop the front to receive the clips and Jabiru clips.  

This makes for a very quick and convenient cowl removal.  

Hopefully your cowl is ex-Jabiru and has flanges round top and lower horizontal mating edges?  

Regards  

Bob Harrison G-PTAG (Was Jab 3300 now 914 Rotax.)  

   

--

96victor(at)gmail.com
Guest

Posted: Thu Sep 25, 2008 7:10 am Post subject: Jab3300 Cowlings

Hi Mike



Didn't your cowl come with 6 aluminum flanges to fasten to the lower cowl that the upper cowl then slides over and can be fasten the the flanges?  Mine did and it works quite well.  I can send you photos if needed.

 



Tom Friedland, ELN, WA



On Wed, Sep 24, 2008 at 8:49 PM,  <DuaneFamly(at)aol.com (DuaneFamly(at)aol.com)> wrote:

 	  Quote: 	
		        Good day....or night....to All,

  

 It's late here so I figure to post this and call it a night. For those that  have the Jab3300 fitted to their aircraft I have a question. I have mounted the  lower cowl...and have placed the upper cowl in place.....but then I started  wondering....I can screw into the fuselage with the rear of the top cowl but  what have people done to secure the front of the top cowl?....I would imagine  the top bolts to the bottom....but what have "those that have gone before" done?  Brackets? Plates?   

 Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru 3300  

Sensenich R64Z N

Ground Adjustable  

   [/b] 	
[b]

DuaneFamly(at)aol.com
Guest

Posted: Thu Sep 25, 2008 7:39 pm Post subject: Jab3300 Cowlings

If I received these clips with the FWF kit I'll have to give a good look around because I don't remember seeing them. If you have a few pix of these clips, it might jog my memory.

Thanks.



Mike

Visit -  www.EuropaOwners.org

96victor(at)gmail.com
Guest

Posted: Fri Sep 26, 2008 2:49 pm Post subject: Jab3300 Cowlings

Hi Mike



I tried to send you some cowl photos to your email address on your post but it was returned as undeliverable...  Do you have another address that I can send them to?



 

Tom



On Thu, Sep 25, 2008 at 8:34 PM, Mike Duane <DuaneFamly(at)aol.com (DuaneFamly(at)aol.com)> wrote:

[quote] --> Europa-List message posted by: "Mike Duane" <DuaneFamly(at)aol.com (DuaneFamly(at)aol.com)>

 

 If I received these clips with the FWF kit I'll have to give a good look around because I don't remember seeing them. If you have a few pix of these clips, it might jog my memory.

 Thanks.

 

 Mike

 

 

 

 

 

 

 Visit -  www.EuropaOwners.org

 



 

 

 

 

 

 

 

 



[b]

ptag.dev(at)tiscali.co.uk
Guest

Posted: Sun Sep 28, 2008 12:21 am Post subject: Jab3300 Cowlings

Hi! Mike

The clips are over centre clips with a hook on the top cowl and a bar on

the lower cowl . Then when engaged a small "R" spring clip makes a

positive secure. If you have the Jabiru Cowl there should be recesses in

both sides of the top ane bottom cowl. I can't sent specific pics

because I've sold my cowls.

However there's a picture on the web at :- http://www.crix.org.uk 

Click on Bob Harrison's Europa G-PTAG 

Go to :- Cooling Mods 

Select :- Port View.

ALSO look at "Cowling View No. 3 " to see the sockets for the rear cowl

tapered pins.

Unfortunately I still can't find the front clips since they are just

behind the spinner. 

Regards

Bob H G-PTAG



--

DuaneFamly(at)aol.com
Guest

Posted: Sun Sep 28, 2008 9:56 am Post subject: Jab3300 Cowlings

Bob,

  

 Thanks so much.....a few pix are worth several thousand words. So the top  cowl is set on top and slide back to mate with the tapered pins mounted on the  firewall and the cam locks up front secure it in place. Do you know if there are  more than the one cam locks on each side? I do have a Jab cowl but I must have  gotten a set before they added the recesses.   

 Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru 3300  

Sensenich R64Z N

Ground Adjustable Prop





Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators.

ptag.dev(at)tiscali.co.uk
Guest

Posted: Sun Sep 28, 2008 10:44 am Post subject: Jab3300 Cowlings

Hi! Mike.  

Yes I explained that even with the clips you now see, the PFA require another inverted “L” shaped clip pop riveting to the lower cowl either side of the spinner so that the “foot” of the inverted “L” engages with a suitable slot in the upper cowl by depressing the upper cowl to get it behind the foot of the “L”.  

I’ve re-read this description a number of times and can’t think of a way to improve it. If you can’t understand I’ll have to do a sketch and scan it and attach it. Let me know.  

Otherwise there is only one of the over centre clips on each side. You will need to shorten the tapered pins in the firewall and round them to be only about ¼” of taper and a small amount of parallel diameter .  

Regards  

Bob Harrison G-PTAG  

   

--

DuaneFamly(at)aol.com
Guest

Posted: Sun Sep 28, 2008 10:52 am Post subject: Jab3300 Cowlings

Thanks Bob,

  

 I finally get what you are talking about. No sketch needed, but thanks for  the offer. I went to your website and checked out a few of your pix. They told  all that I need.

  

 I really appreciate the help.

  

 Mike

  

 Do Not Archive

  

  In a message dated 9/28/2008 11:45:17 A.M. Pacific Daylight Time,  ptag.dev(at)tiscali.co.uk writes:

  	  Quote: 	
		        

Hi!    Mike.   

Yes I explained that    even with the clips you now see, the PFA require another inverted    â€œLâ€ shaped clip pop riveting to the lower cowl either side of    the spinner so that the â€œfootâ€ of the inverted â€œLâ€ engages with a suitable    slot in the upper cowl by depressing the upper cowl to get it behind the foot    of the â€œLâ€.   

Iâ€™ve re-read this    description a number of times and canâ€™t think of a way to improve it. If you    canâ€™t understand Iâ€™ll have to do a sketch and scan it and attach it. Let me    know.   

Otherwise there is    only one of the over centre clips on each side. You will need to shorten the    tapered pins in the firewall and round them to be only about Â¼â€ of taper and a    small amount of parallel diameter    .   

Regards   

Bob Harrison    G-PTAG   

    

-----Original    Message-----

From:    owner-europa-list-server(at)matronics.com    [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of    DuaneFamly(at)aol.com

Sent: 28 September 2008 18:51

To: europa-list(at)matronics.com

Subject: Re: Jab3300    Cowlings   

       

Bob,

      

 

      

Thanks    so much.....a few pix are worth several thousand words. So the top cowl is set    on top and slide back to mate with the tapered pins mounted on the firewall    and the cam locks up front secure it in place. Do you know if there are more    than the one cam locks on each side? I do have a Jab cowl but I must have    gotten a set before they added the recesses.       

 

      

Mike Duane    A207A

Redding, California

XS Conventional Gear

Jabiru 3300    

Sensenich R64Z N

Ground Adjustable    Prop



   

            

   

Looking for simple    solutions to your real-life financial challenges? Check out    WalletPop for the latest news and information, tips and    calculators.



 	  Quote: 	
		  



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Looking for simple solutions to your real-life financial challen86/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001" href=http://www.walletpop.com/?NCID=emlcntuswall00000001" target="_blank">Check out WalletPop for the latest news and information, tips and calculators.

  [quote][b]

grahamsingleton(at)btinte
Guest

Posted: Sun Sep 28, 2008 12:17 pm Post subject: Jab3300 Cowlings

Robert C Harrison wrote:

 	  Quote: 	
		  

 Hi! Mike.



 Yes I explained that even with the clips you now see, the PFA require 

 another *_inverted “L”_* shaped clip pop riveting to the lower cowl 

 either side of the spinner so that the “foot” of the inverted “L” 

 engages with a suitable slot in the upper cowl by depressing the upper 

 cowl to get it behind the foot of the “L”.



 I’ve re-read this description a number of times and can’t think of a 

 way to improve it.

Bob & All
	


You need to remember that the pressure inside the cowl is quite high, 

 a few inches of water pressure equivalent to 60/80 kts airspeed, 

(guess of internal cowl pressure). Multiply 1/2 PSI by the area of the 

cowl and it adds up to a serious amount of load. 500 lbs? I think PFA 

are right.

Graham

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