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Cowl Replacement Update

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robin(at)PaintTheWeb.com
Guest

Posted: Thu Jan 10, 2013 12:13 pm Post subject: Cowl Replacement Update

We are close to flying the replacement cowl. I wanted to share a few photos of the new cowl, baffles, oil cooler location including bracket. intake etc… 

Robin 

[img]cid:image013.jpg(at)01CDEF2B.D8032790[/img] 

Can't you see the air molicules woooshing by the cowl? 

I like having only 2 inlet holes.  

[img]cid:image014.jpg(at)01CDEF2B.D8032790[/img] 

  

Engine looks pretty clean for 325+ hours.  

Double Induction, double filter system. No Alt Air so yet. 

[img]cid:image015.jpg(at)01CDEF2B.D8032790[/img] 

[img]cid:image016.jpg(at)01CDEF2B.D8032790[/img] 

Nifty oil cooler bracket 

[img]cid:image017.jpg(at)01CDEF2B.D8032790[/img] 

[img]cid:image018.jpg(at)01CDEF2B.D8032790[/img]

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Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Thu Jan 10, 2013 12:26 pm Post subject: Cowl Replacement Update

Very cool!  Excited to hear how she works in flight. 



Sent from my iPhone



On Jan 10, 2013, at 13:13, Robin Marks <robin(at)PaintTheWeb.com (robin(at)PaintTheWeb.com)> wrote:

[quote]    v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]-->  <![endif]-->   <![endif]-->    

We are close to flying the replacement cowl. I wanted to share a few photos of the new cowl, baffles, oil cooler location including bracket. intake etc… 

Robin 

<image013.jpg> 

Can't you see the air molicules woooshing by the cowl? 

I like having only 2 inlet holes.  

<image014.jpg> 

  

Engine looks pretty clean for 325+ hours.  

Double Induction, double filter system. No Alt Air so yet. 

<image015.jpg> 

<image016.jpg> 

Nifty oil cooler bracket 

<image017.jpg> 

<image018.jpg> 

   

[b]

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

recapen(at)earthlink.net
Guest

Posted: Thu Jan 10, 2013 1:07 pm Post subject: Cowl Replacement Update

Is this a new SJ RV10 cowl?  I don't see it on their website....



Would like to see a front view of the dual fiberglass intake runners.



Guessing you're not using a plenum.....

rv10flyer(at)live.com
Guest

Posted: Thu Jan 10, 2013 1:12 pm Post subject: Cowl Replacement Update

you pull that cowling off a legacy? even with that supercharged engine I  don’t think the cowling is going to give you the speed of a Lancair.. sorry to  disappoint [img]cid:48F5555A16A74EED8A7CC5E700EABE4F(at)pascalPC[/img]

  

 Very nice fit and engine

    

  From: Robin Marks (robin(at)PaintTheWeb.com) 

 Sent: Thursday, January 10, 2013 12:13 PM

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) 

 Subject: Cowl Replacement Update

  



   

We are close to  flying the replacement cowl. I wanted to share a few photos of the new cowl,  baffles, oil cooler location including bracket. intake  etc… 

Robin 

[img]cid:592A650C217B4145B55974BB28406AB8(at)pascalPC[/img] 

Can't you see the air  molicules woooshing by the cowl? 

I like having only 2  inlet holes.  

[img]cid:2585F0E1D0334DCEAD427FA82EC8F9BB(at)pascalPC[/img] 

  

Engine looks pretty  clean for 325+ hours.  

Double Induction,  double filter system. No Alt Air so yet. 

[img]cid:FA573B9F8A674D7B8DE900642EDB2D86(at)pascalPC[/img] 

[img]cid:413398A0A0DD4D4A9A726C8BF4CCC68A(at)pascalPC[/img] 

Nifty oil cooler  bracket 

[img]cid:A938198C956D4B059E4ADC863BF4E862(at)pascalPC[/img] 

[img]cid:798FC876455C428087A8AF96C97AF97D(at)pascalPC[/img]

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robin(at)PaintTheWeb.com
Guest

Posted: Thu Jan 10, 2013 2:01 pm Post subject: Cowl Replacement Update

Ralph,

This cowl replaces the SJ cowl and plenum. Adios!

 This is the new Showplanes and intake system for the FM300. No Plenum for me ever again.

If one were to visit the Showplane website you can see the induction system from the front view. Basically the bottom quarter of each inlet is dedicated to the FI induction system.



Robin



"Ralph E. Capen" <recapen(at)earthlink.net> wrote:




Is this a new SJ RV10 cowl?  I don't see it on their website....



Would like to see a front view of the dual fiberglass intake runners.



Guessing you're not using a plenum.....

recapen(at)earthlink.net
Guest

Posted: Thu Jan 10, 2013 2:06 pm Post subject: Cowl Replacement Update

Thanks!

--

wgreenley

Joined: 09 Jan 2010
Posts: 100
Location: Dowagiac, MI

Posted: Thu Jan 10, 2013 2:25 pm Post subject: Cowl Replacement Update

9-12 months from needing to order a cowl. This is a new area for me, what is

the reason for using the showplanes cowl over vans regular cowl?

Bill Greenley

RV-10 builder



--

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Thu Jan 10, 2013 3:02 pm Post subject: Re: Cowl Replacement Update

Do you plan to stuff some insulation between the induction air and the #1 exhaust?

_________________
Bob Turner
RV-10 QB

robin(at)PaintTheWeb.com
Guest

Posted: Thu Jan 10, 2013 3:14 pm Post subject: Cowl Replacement Update

I originally placed the SJ cowl on the -10 based on the 2 place RV fleet history with the SJ unit. I was probably the 3rd -10 SJ cowl flying. Unfortunately the SJ -10 cowl well documented problems meant that I needed to replace the cowl on my flying -10. The smart move would have been to go with the proven factory cowl. It does everything you need it to do and there are 350 other -10 pilots you can have something in common with when installing the Vans cowl. When my 8A came on line it was time to replace the -10 cowl. I opted for the new cowl even though I will most likely be the first flying production Showplanes -10 cowl because the builder has a long history of RV aftermarket product development and I had been in discussions with Bryan for about 2 years tracking his progress. He is extremely methodical in his development approach vs. just blowing up a smaller cowl and plenum hoping it works. My prior cowl & plenum were sold as a set intended to be used together but even a basic measurement like the inlet holes weren't aligned. That should have been a warning to me but I already had started the assembly. Bryan on the other hand had done so much R&D and his goal was to develop a "no compromises" cowl. A cowl that can fly with the standard Vans oil cooler on the wedge with no added louvers and cobbled together solutions required. When it came time I decided to support a builder & designer that gave great care in his development. I can say the quality of fiberglass far exceeds anything ever shipped from Vans.

Long story / short. The smartest solution would have been the Standard Vans cowl and it will remain so for most builders. But this cowl is great looking and works with the FM200 & FM300 so I am giving it a try. That is why I fly in the Experimental category for gosh sakes. Of course the first 325 hours I flew in the Disgruntled category but hopefully this new cowl will resolve those issues. The rest of the plane is a dream to own & fly. 



Robin

RV-4		Sold

RV-6A	Sold

RV-10		Flying

RV-8A	Flying 



--

robin(at)PaintTheWeb.com
Guest

Posted: Thu Jan 10, 2013 3:15 pm Post subject: Cowl Replacement Update

Yes. It's tight up there.



R



--

jchang10

Joined: 05 Jul 2006
Posts: 227

Posted: Thu Jan 10, 2013 6:36 pm Post subject: Cowl Replacement Update

Robin... Wow, pretty cool. I think i spoke with Bryan at Independence 

last year. He and the owner were showing the RV-10 prototype just back 

from the painter. Unfortunately, they didn't make it in time for 

Oshkosh. However, their -10 was probably the most modified -10 i have 

ever seen or heard of yet. I had never heard of Showplanes before, so i 

was quite surprised to see so many great mods i had never heard of. I 

could have easily spent another 10 years building if i had known. 



Oh well, back to my plain jane airplane. 

Jae



-- 

#40533 RV-10

First flight 10/19/2011

Phase 1 Done 11/26/2011

do not archive

_________________
#40533 RV-10
First flight 10/19/2011
Phase 1 Done 11/26/2011

carl.froehlich(at)verizon
Guest

Posted: Thu Jan 10, 2013 7:40 pm Post subject: Cowl Replacement Update

Just to offer another opinion on the James Cowl and plenum...

 

I'm running a stock IO-540 from Van's with the Hartzell BA prop, a single

oil cooler (but not mounted like Van's suggests) and bottom cowl louvers

about the same area size as specified for the stock Van's cowl.  I do not

have oil temp problems and control CHTs below 400 degrees.  Comparing my

cruise and top speeds to Van's performance specifications I am enjoying

measurable gains (data run taken before recent rigging tweaks yielded 187kts

TAS, 6500', 2500 RPM, 23.3"MP - about 73% power).  Tracking this discussion

on the list for a few years now it seems I have a much later cowl than Robin

as I did not have plenum alignment problems and started off with the larger

inlet rings.



The James Cowl is not magic.  It offers reduced drag over the Van's cowl by

a smaller inlet area but (theoretically) more efficient use of the cooling

air that is taken in.  The trade off is on a hot day I have to put the nose

down a little more on an extended climb (say 135 knots instead of the 120 I

use in my RV-8A).  The set up does add significant work over the stock Van's

cowl.  I decided to go down this path for the same reason it seems Robin

did; the positive James Cowl track record in 2 place RVs.  When I ordered

mine Will James was straight with me on customer reports of heating problems

- and what action he took to address them.  This was enough to mitigate my

concerns.  The last time I checked however Will no longer offers the RV-10

cowl.  



As Robin states the least risk, lowest work option is to stick with the

stock Van's cowl.  My decision tree was biased toward fuel efficient cross

country performance.  With just 60 hours and only one long cross country, I

am pleased with the results.  I've had the plane down for the holidays to

back fit the ADSB receiver and to work the gripe list but this weekend it

comes back out of the hangar.  It's a shame the day job keeps getting in the

way of flying.



Carl

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robin(at)PaintTheWeb.com
Guest

Posted: Fri Jan 11, 2013 10:37 am Post subject: Cowl Replacement Update

Carl, 

I would not necessarily dispute your observations. I just can’t consistently keep my cylinders under 400 F and I fly in CA often out of the San Fernando Valley. Just no way to fly the plane and not feel you are reducing the engine life  at those temps. Plus I could not fly LOP with the SJ cowl which would have given my CHT's a rest for the bulk of each leg. The thought of landing at temp and a quick turnaround with a heat soaked engine makes me groan for my Barrett special. I figured I could  pay now or pay later. In general while 187 TAS at 2,500 RPM sounds good my long term preference is targeting 10 GPH, Low CHT's and an engine that makes it to 2,000 TBO.   

  

Robin 

  

[img]cid:image005.jpg(at)01CDEFE7.8BE00290[/img] 

  

[img]cid:image006.jpg(at)01CDEFE7.8BE00290[/img] 

  

  

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Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Fri Jan 11, 2013 11:04 am Post subject: Re: Cowl Replacement Update

How did the cowl affect the ability to fly LOP? Is this the odd air pressure on the injector bleed holes issue?

_________________
Bob Turner
RV-10 QB

robin(at)PaintTheWeb.com
Guest

Posted: Fri Jan 11, 2013 11:23 am Post subject: Cowl Replacement Update

Bob, It's been years since I addressed the issue so I don't want to tell you something that is partially correct but not totally accurate. I have a feeling that some of my temp issues and LOP issues had to do with such a minor difference in top & bottom deck pressure which limited the amount of cooling air passing through the cylinder fins. 

I did however swap out my standard injectors to a Turbo Rail type of set up (AFP Products) which helped but never got me balanced all the way to LOP flight w/o a rough running engine. At that point I knew I was a year out from scrapping the cowl all together so no further development was undertaken. Just too many patches & band aids for me. Hopefully v.2.0 will work out better.



Robin 



--

robin(at)PaintTheWeb.com
Guest

Posted: Tue Jan 15, 2013 7:21 pm Post subject: Cowl Replacement Update

Someone asked to see the front view of the Showplanes cowl to review the FI inlet area.  

Here you go! 

Robin 

[img]cid:image005.jpg(at)01CDF355.5CBA37D0[/img][img]cid:image006.jpg(at)01CDF355.5CBA37D0[/img]

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recapen(at)earthlink.net
Guest

Posted: Wed Jan 16, 2013 4:44 am Post subject: Cowl Replacement Update

Thanks - I was one of the ones that requested a front-view...



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Mauledriver(at)nc.rr.com
Guest

Posted: Wed Jan 16, 2013 6:37 am Post subject: Cowl Replacement Update

I didn't ask but thanks.  Now I get       it.  A very different approach with the ram air resulting in a       very good looking nose.

       

       Bill

       

       On 1/15/2013 10:20 PM, Robin Marks wrote:

     

     [quote]                     v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]-->         <![endif]-->   <![endif]-->                

Someone             asked to see the front view of the Showplanes cowl to review             the FI inlet area.                      

Here             you go!         

Robin         

       

     [b]

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