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louvers on Glasair III

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Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Tue Aug 26, 2014 12:00 pm Post subject: louvers on Glasair III

At Oshkosh this year I noticed that a lot of Glasair IIIs have a louver on the right side of the cowl.  I don't have a Glasair - I fly an RV-8 but I like to look at other people's planes and learn from them.



What are the louvers for, and where can there be bought?  I am guessing they are either cooling vents so more hot air exits the cowl or are the outlet for the oil cooler.

_________________
John
Keller, TX
RV-8 N247TD

n355tc(at)comcast.net
Guest

Posted: Tue Aug 26, 2014 1:11 pm Post subject: louvers on Glasair III

You are correct. They are for cooling with the oil cooler. Mine came with my kit from glasair.



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Craymondw(at)aol.com
Guest

Posted: Tue Aug 26, 2014 1:57 pm Post subject: louvers on Glasair III

Wait until you see and hear my new powder coated 4 to 1 scavenge   exhaust system that dumps into a 3 inch exhaust pipe that  was designed by a NASCAR mechanic.  The NASCAR  mechanic and  exhaust assembler believe it will boast my horse power up 20%!!  When I gun  the engine it sounds like a 600 h.p. hot rod engine and sounds  just awesome!! Before my engine rebuild and using the poorly designed  exhaust supplied by Glasair, I was clocked at Sun and Fun in 1992 doing 235 mph.  When the NASCAR mechanic saw my cowl off he stood there in amazement and laughed  at how poorly the system was designed while pointing out how it was choking my  engine, not to mention the thing cracking several times!!  Since racing the  plane in 1992 I have made several modifications to my Glasair2SFT    and will let you know what the official new speed will be with this  new exhaust system. Now this NASCAR mechanic is about to redesign  the GL3 exhaust system. This mechanic has kept the jigs and reports he  can provide these exhaust systems for the GL2's  for around $1,800.  And they are guaranteed to not crack or rust!!    

  

  In a message dated 8/26/2014 5:11:22 P.M. Eastern Daylight Time,  n355tc(at)comcast.net writes:

 [quote]You are correct. They are for cooling with the oil cooler. Mine    came with my kit from glasair.



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Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Tue Aug 26, 2014 3:18 pm Post subject: louvers on Glasair III

Do they work well?  Do you get good cooling from the oil cooler? On Aug 26, 2014 4:12 PM,  <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote:[quote] You are correct. They are for cooling with the oil cooler. Mine came with my kit from glasair.



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_________________
John
Keller, TX
RV-8 N247TD

n355tc(at)comcast.net
Guest

Posted: Tue Aug 26, 2014 3:49 pm Post subject: louvers on Glasair III

I'm not flying yet but I know of no problems with temps using this setup. I also know of no one who has redesigned the oil cooler system in the glasair III.



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gossend(at)gmail.com
Guest

Posted: Tue Aug 26, 2014 4:27 pm Post subject: louvers on Glasair III

On my airplane, the answer is yes and no. The louvers exit a lot of hot air from the oil cooler, but oil temp is still and always problematic. I've gotten used to 210 degrees at 60% cruise power in just about any weather. If I run harder, the temp comes down! Conclusion: the Glasair III was not designed to fly slow.You might note that some III's have been modified with significantly larger coolers (and louvers) - I considered that, but then just decided to fly faster and that fixed it just fine.

Dick Gossen

N90GG



On Aug 26, 2014, at 6:17 PM, John Dalman <jdalmansr(at)gmail.com (jdalmansr(at)gmail.com)> wrote:

[quote]

Do they work well?  Do you get good cooling from the oil cooler?On Aug 26, 2014 4:12 PM, <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote:[quote]You are correct. They are for cooling with the oil cooler. Mine came with my kit from glasair.



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Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Tue Aug 26, 2014 5:38 pm Post subject: louvers on Glasair III

Thank you for the additional information.  In hot weather my oil runs about 200 in cruise and that seems ok to me.  It never goes above 215 in climb, but two CHTs go to about 410 or 415 in climb on hot days.  I am going to put new baffles on this winter, which should help. 



Thanks again,

John



On Tue, Aug 26, 2014 at 7:26 PM, Dick Gossen <gossend(at)gmail.com (gossend(at)gmail.com)> wrote:

 [quote]On my airplane, the answer is yes and no. The louvers exit a lot of hot air from the oil cooler, but oil temp is still and always problematic. I've gotten used to 210 degrees at 60% cruise power in just about any weather. If I run harder, the temp comes down! Conclusion: the Glasair III was not designed to fly slow. You might note that some III's have been modified with significantly larger coolers (and louvers) - I considered that, but then just decided to fly faster and that fixed it just fine.

Dick Gossen

N90GG

 

On Aug 26, 2014, at 6:17 PM, John Dalman <jdalmansr(at)gmail.com (jdalmansr(at)gmail.com)> wrote:



[quote] 

Do they work well?  Do you get good cooling from the oil cooler?On Aug 26, 2014 4:12 PM, <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote: [quote]You are correct. They are for cooling with the oil cooler. Mine came with my kit from glasair.

 

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_________________
John
Keller, TX
RV-8 N247TD

Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Tue Aug 26, 2014 5:38 pm Post subject: louvers on Glasair III

Thanks.  Good information.

On Tue, Aug 26, 2014 at 6:47 PM,  <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote:

 [quote]I'm not flying yet but I know of no problems with temps using this setup. I also know of no one who has redesigned the oil cooler system in the glasair III.

 

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_________________
John
Keller, TX
RV-8 N247TD

Craymondw(at)aol.com
Guest

Posted: Tue Aug 26, 2014 5:40 pm Post subject: louvers on Glasair III

In a message dated 8/26/2014 7:18:33 P.M. Eastern Daylight Time,  jdalmansr(at)gmail.com writes:

 [quote]   

Do they work well?  Do you get good cooling from the oil    cooler?   On Aug 26, 2014 4:12 PM, <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote:   [quote]     You are correct. They are for cooling with the oil      cooler. Mine came with my kit from glasair.



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Craymondw(at)aol.com
Guest

Posted: Tue Aug 26, 2014 5:48 pm Post subject: louvers on Glasair III

Back in the early 1990's a GL111 was placed in a wind tunnel and found that  the front of the cowling was buffeting. The builder redesigned the cowling by  bringing the inlets forward.  With that in mind, I can see why the slower a  three flies the worse the buffet and the hotter it runs. .  

  In a message dated 8/26/2014 8:27:15 P.M. Eastern Daylight Time,  gossend(at)gmail.com writes:

 [quote]On my    airplane, the answer is yes and no. The louvers exit a lot of hot air from the    oil cooler, but oil temp is still and always problematic. I've gotten used to    210 degrees at 60% cruise power in just about any weather. If I run harder,    the temp comes down! Conclusion: the Glasair III was not designed to fly slow.     You might note that some III's have been modified with significantly    larger coolers (and louvers) - I considered that, but then just decided to fly    faster and that fixed it just fine.

   Dick Gossen

   N90GG

   

      On Aug 26, 2014, at 6:17 PM, John Dalman <jdalmansr(at)gmail.com (jdalmansr(at)gmail.com)> wrote:

   [quote]          

Do they work well?  Do you get good cooling from the oil      cooler?     On Aug 26, 2014 4:12 PM, <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote:     [quote]You are correct. They are for cooling with the oil cooler.        Mine came with my kit from glasair.



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jeffs(at)ostari.com
Guest

Posted: Tue Aug 26, 2014 6:51 pm Post subject: louvers on Glasair III

Just curious, which two cylinders ?  From: owner-glasair-list-server(at)matronics.com <owner-glasair-list-server(at)matronics.com> on behalf of John Dalman <jdalmansr(at)gmail.com>

 Sent: Tuesday, August 26, 2014 6:37:59 PM

 To: glasair-list(at)matronics.com

 Subject: Re: louvers on Glasair III  

  Thank you for the additional information.  In hot weather my oil runs about 200 in cruise and that seems ok to me.  It never goes above 215 in climb, but two CHTs go to about 410 or 415 in climb on hot days.  I am going to put new baffles on  this winter, which should help. 

 Thanks again,

 John

 On Tue, Aug 26, 2014 at 7:26 PM, Dick Gossen  <gossend(at)gmail.com (gossend(at)gmail.com)> wrote:

 [quote] On my airplane, the answer is yes and no. The louvers exit a lot of hot air from the oil cooler, but oil temp is still and always problematic. I've gotten used to 210 degrees at 60% cruise power in just about any weather. If  I run harder, the temp comes down! Conclusion: the Glasair III was not designed to fly slow. You might note that some III's have been modified with significantly larger coolers (and louvers) - I considered that, but then just decided to fly faster and that fixed it just fine.

 Dick Gossen

 N90GG

  On Aug 26, 2014, at 6:17 PM, John Dalman <jdalmansr(at)gmail.com (jdalmansr(at)gmail.com)> wrote:

 [quote]  

Do they work well?  Do you get good cooling from the oil cooler? On Aug 26, 2014 4:12 PM, <n355tc(at)comcast.net (n355tc(at)comcast.net)> wrote: [quote] You are correct. They are for cooling with the oil cooler. Mine came with my kit from glasair.

 Sent from XFINITY Connect Mobile App

 ----

Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Wed Aug 27, 2014 6:41 am Post subject: louvers on Glasair III

The rear two - 3 and 4.  Pretty common.  They are not bad in cruise but

here in Texas, when it's hot, the cylinders get hotter than I'd like but

still within limits.  I just need to do a cruise climb and not a more

aggressive climb.

On Tue, Aug 26, 2014 at 9:49 PM, Jeff Siebenhaar <jeffs(at)ostari.com> wrote:

[quote]  Just curious, which two cylinders ?

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

 *From:* owner-glasair-list-server(at)matronics.com <

 owner-glasair-list-server(at)matronics.com> on behalf of John Dalman <

 jdalmansr(at)gmail.com>

 *Sent:* Tuesday, August 26, 2014 6:37:59 PM

 *To:* glasair-list(at)matronics.com

 *Subject:* Re: louvers on Glasair III

  Thank you for the additional information.  In hot weather my oil runs

 about 200 in cruise and that seems ok to me.  It never goes above 215 in

 climb, but two CHTs go to about 410 or 415 in climb on hot days.  I am

 going to put new baffles on this winter, which should help.

  Thanks again,

  John

 On Tue, Aug 26, 2014 at 7:26 PM, Dick Gossen <gossend(at)gmail.com> wrote:

> On my airplane, the answer is yes and no. The louvers exit a lot of hot

> air from the oil cooler, but oil temp is still and always problematic. I've

> gotten used to 210 degrees at 60% cruise power in just about any weather

_________________
John
Keller, TX
RV-8 N247TD

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