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HKS readings for the day
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zeprep251(at)aol.com
Guest

Posted: Wed Jan 28, 2009 9:52 am Post subject: HKS readings for the day

At full throttle on a 4stroke including the HKS, you have very little pulse in the intake.You should use an electric pump any time you go to full throttle.Solve the boot problems with the JBM boots.                                                                                                                                                                     auxilery--

jbhart(at)onlyinternet.ne
Guest

Posted: Wed Jan 28, 2009 12:33 pm Post subject: HKS readings for the day

From: "Larry Cottrell" <lcottrell(at)fmtcblue.com>

Date: Tue, 27 Jan 2009 19:01:01 -0700

 	  Quote: 	
		  

Hi,

 

Boyd,The last time I flew I was doing 5750 rpm's oil temps were 157 and CHT 

was 329 degrees.



  
	


Larry,



Are you monitoring EGTs?



Jack B. Hart FF004

Winchester, IN

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Jan 28, 2009 1:35 pm Post subject: HKS readings for the day

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robcannon

Joined: 22 Jun 2008
Posts: 39
Location: British Columbia

Posted: Wed Jan 28, 2009 8:34 pm Post subject: Re: HKS readings for the day

Larry - 1180 EGT and 330- CHT.

          - you could take a little pitch out and get your egt up a bit and cht down abit.  I'd guess you could get to 1280 and 300. ( a bit better ?)

cheers, Rob

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Jan 28, 2009 9:42 pm Post subject: HKS readings for the day

I had the prop relaxed enough that I would go over the  6200 on take off, and noticed no improvement. I since added one degree of pitch  to the blades, I may relax it about a half degree, but I really don't expect it  to help. I intend to check the clips and see if a bit more fuel will help the  problem. I do not currently have a problem since the OAT is colder than a well  diggers butt, however the temps will not stay that way. Its going to get hot  sometime.

 Larry C 

 [quote]   ---

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aslsa.rng(at)gmail.com
Guest

Posted: Thu Jan 29, 2009 9:59 am Post subject: HKS readings for the day

Larry, Rob, This is a 4 stroke engine so the 2 stroke rules about prop setting do not apply. You can set the prop to get 6200 in climb and overspeed in level flight to maximize climb performance or set the prop for 5600 in climb and then run all day long at 5800 in level flight for max cruise performance, it will have very little difference on CHT and EGT readings. I've done both after talking about prop setting with Sean at Hpower. Larry, after looking at the readings on your EIS I'd definitely recommend raising the jet needles. The factory is now recommending running them at their highest setting, i.e. clip in the lowest slot to protect the exhaust valve guides. 

 If you take another screen shot of the EIS go to the next screen where it will display both cylinders CHT and EGT readings. That's where I fly all the time so I know exactly what both cylinders are doing. Just a thought.

 



Rick

do not archive

PS Larry, if you've never worked on the Bing 64 be sure and take note of the locating tang on the  bottom of the carb diaphragm that fits in a little pit in the carb body. I caught it when I did the second carb so I fixed it on the first before I flew with it. Get them misaligned and you'll be chasing a ghost trying to figure out why you richened the midrange mix and it's still running high CHT's.

 

On Wed, Jan 28, 2009 at 11:30 PM, Larry Cottrell <lcottrell(at)fmtcblue.com (lcottrell(at)fmtcblue.com)> wrote:

[quote]        I had the prop relaxed enough that I would go over the  6200 on take off, and noticed no improvement. I since added one degree of pitch  to the blades, I may relax it about a half degree, but I really don't expect it  to help. I intend to check the clips and see if a bit more fuel will help the  problem. I do not currently have a problem since the OAT is colder than a well  diggers butt, however the temps will not stay that way. Its going to get hot  sometime.

 Larry C 

 [quote]   ---

robcannon

Joined: 22 Jun 2008
Posts: 39
Location: British Columbia

Posted: Thu Jan 29, 2009 4:44 pm Post subject: Re: HKS readings for the day

Guest - interesting that you say that prop pitch has no effect on cht and egt.  When I set up my prop on my hks I found that my prop pitch had a direct influence on cht and egt.  Too little pitch equaled high egt's and low cht's and vice versa.  It was a very fine line to get it right.

Rob Cannon

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Thu Jan 29, 2009 4:48 pm Post subject: HKS readings for the day

[quote] ---

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aslsa.rng(at)gmail.com
Guest

Posted: Fri Jan 30, 2009 12:48 pm Post subject: HKS readings for the day

Could be the effect of different aircraft and props. I already had a climb rate like a home sick angel and wanted batter cruise performance, which is why I checked with Sean at Hpower.I run a 68" 4 blade Powerfin with F style blades. What prop do you run? 



Rick

do not archive



On Thu, Jan 29, 2009 at 6:44 PM, robcannon <leecannon(at)telus.net (leecannon(at)telus.net)> wrote:

 [quote]--> Kolb-List message posted by: "robcannon" <leecannon(at)telus.net (leecannon(at)telus.net)>

  

 Guest - interesting that you say that prop pitch has no effect on cht and egt.  When I set up my prop on my hks I found that my prop pitch had a direct influence on cht and egt.  Too little pitch equaled high egt's and low cht's and vice versa.  It was a very fine line to get it right.

  Rob Cannon

 

 

 

 

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robcannon

Joined: 22 Jun 2008
Posts: 39
Location: British Columbia

Posted: Fri Jan 30, 2009 7:31 pm Post subject: Re: HKS readings for the day

Rick - Veeerrry interesting......4 blade F model 68 inch powerfin... I fly a Kolb twinstar mark II and have a 66 inch F model.  What are you flying Rick?  

Rob Cannon

aslsa.rng(at)gmail.com
Guest

Posted: Fri Jan 30, 2009 8:46 pm Post subject: HKS readings for the day

It's on a trike, a Northwing Apache Sport.



Rick



On Fri, Jan 30, 2009 at 9:31 PM, robcannon <leecannon(at)telus.net (leecannon(at)telus.net)> wrote:

 [quote]--> Kolb-List message posted by: "robcannon" <leecannon(at)telus.net (leecannon(at)telus.net)>

  

 Rick - Veeerrry interesting......4 blade F model 68 inch powerfin... I fly a Kolb twinstar mark II and have a 66 inch F model.  What are you flying Rick?

 Rob Cannon

 

 

 

 

 Read this topic online here:

 

 [url=http://forums.matronics.com/viewtopic.php?p 27810#227810]http://forums.matronics.com/viewtopic.php?p 27810#227810[/url]

 

 

 

 

 

 

 

 

 

 

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