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601 XL Rotax cowling needed

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webmaster(at)upac.ca
Guest

Posted: Wed Aug 23, 2006 5:01 am Post subject: 601 XL Rotax cowling needed

Hi folks, it seems that my engine cooling trouble is not over and I'm at my wits end. So I've decided to fix it permanently by changing my stock cowling to something better.

That better happens to be the new cowling for a Rotax install on the 601XL (the one with the rads up front). Does anyone have such a cowling they would like to sell? Perhaps someone out there has a FW forward kit for a Rotax they decided against? 



On a whim I called Zenith but they had none in stock since they buy them from Czech aircraft works and we know that arrangement has fallen through. Skyhops in Florida has not returned my calls or email as of yet since they might have them...



Any help is greatly appreciated



 Trev Page

C-IDUS 601HD R912

 



 [quote][b]

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dfmoeller

Joined: 19 Jun 2006
Posts: 60
Location: Austin, TX

Posted: Thu Aug 24, 2006 2:58 pm Post subject: Re: 601 XL Rotax cowling needed

I have had the exact same problem on my 912S/601XL combo and am executing the exact same fix.  Funny the guy at Zenith didn't mention this to me.



I have an early model XL with the side mounted cooler.  In the central Texas summer, it is simply inadequate, even in early morning.  I'm reasonably sure it simply is a matter of insuffienct air flow.  I have great oil pressure and absolutely zero blockage around the oil cooler.



I purchased the Rotax cooler from CPS and the mounting bracket and banjo fittings from Zenith.  I have a mechanic working on fiberglassing the new hole in the cowling and mounting the unit.  I got some dimensions of the opening from Zenith and the newer style cowling and mounting is described very well in the rev. 1.1 version of the firewall forward instructions which are on the Zenith Builders Pages.



Now, if this doesn't work, I'm not quite sure what next, but to mount both units.



BTW, where are you located?  I would be eager to hear how others have solved this problem since there seems to be plenty of 601XLs in the south.



Doug Moellering

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rstone4(at)hot.rr.com
Guest

Posted: Thu Aug 24, 2006 4:15 pm Post subject: 601 XL Rotax cowling needed

Doug,

     Since I am also a resident of Central Texas, (Harker Heights) near Fort 

Hood, I would also like to know where you are.



Bob Stone

-DO NOT ARCHIVE



--

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webmaster(at)upac.ca
Guest

Posted: Fri Aug 25, 2006 4:11 am Post subject: 601 XL Rotax cowling needed

Doug, as it turns out I'm having to order the whole kit from CZAW because of the licensing termination with Zenith. Nick told me that most of the current XL sales are Jabiru powered and not Rotax which is why the whole cowling thing is up in the air (no pun intended)



CZAW sent me some great pictures of the Rotax install with the cowling and everything is in the front now. My only concern is the stock muffler might interfere with the oil cooler position since it's right in front of the can and the front down-tubes from the 912 go into the can from the front. I've seen some pictures with another exhaust and the tubes go into from the sides... Perhaps you can shed some light on this setup since the FW kit photos from ZAC show the earlier setup like yours with the side-mounted oil cooler.



BTW, the CZAW cowling is carbon fibre so it should be very light...



Some pictures are enclosed that might help. Sorry about the small size but I'm not sure if the Matronics system will send them out and kibosh the sizes...



Trev Page

C-IDUS 601HD R912

 

[img]cid:593D4689-C6BB-4AC8-BD33-20A4DC3D038F(at)local[/img]

[img]cid:6FE5EFB3-703E-4805-824D-93DB66E0B049(at)local[/img]

[img]cid:4F59D718-7BFC-40FF-97CF-5E94ED1F4E91(at)local[/img]

[img]cid:AFD6D67B-A10B-46FE-9FC3-216D51294458(at)local[/img]

[img]cid:A89826D6-DC74-46C1-9134-6AD7A36EE28E(at)local[/img]



On Aug 24, 2006, at 6:58 PM, dfmoeller wrote:

 	  Quote: 	
		  --> Zenith-List message posted by: "dfmoeller" <dfmoeller(at)austin.rr.com (dfmoeller(at)austin.rr.com)>

I have had the exact same problem on my 912S/601XL combo and am executing the exact same fix.  Funny the guy at Zenith didn't mention this to me.

I have an early model XL with the side mounted cooler.  In the central Texas summer, it is simply inadequate, even in early morning.  I'm reasonably sure it simply is a matter of insuffienct air flow.  I have great oil pressure and absolutely zero blockage around the oil cooler.

I purchased the Rotax cooler from CPS and the mounting bracket and banjo fittings from Zenith.  I have a mechanic working on fiberglassing the new hole in the cowling and mounting the unit.  I got some dimensions of the opening from Zenith and the newer style cowling and mounting is described very well in the rev. 1.1 version of the firewall forward instructions which are on the Zenith Builders Pages.

Now, if this doesn't work, I'm not quite sure what next, but to mount both units.

BTW, where are you located?  I would be eager to hear how others have solved this problem since there seems to be plenty of 601XLs in the south.

Doug Moellering

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