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Harv
Joined: 01 Jul 2010
Posts: 170
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 Posted: Wed Aug 06, 2014 12:36 am Post subject: CJ6 Housai Mixture adjustment |
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Good morning
With all this talk of mixture setting.....
Has anyone changed the (by turning the screw in the carb body located behind the wire locked plug) setting on their HS6 Housai engine?
My CJ6 has low CHT temps in the climb (at max continuous power) and also low oil temps and I'm sure its running slightly too rich and guzzling fuel.
Is there's a proper procedure for set-up, or is it a case of leaning off half a turn and then see how that affects things?
Rgs
Harv
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stephen.hayne
Joined: 01 Nov 2013
Posts: 59
Location: United States
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| Posted: Sat Oct 06, 2018 6:45 pm Post subject: Re: CJ6 Housai Mixture adjustment |
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| Harv wrote: | Good morning
With all this talk of mixture setting.....
Has anyone changed the (by turning the screw in the carb body located behind the wire locked plug) setting on their HS6 Housai engine?
My CJ6 has low CHT temps in the climb (at max continuous power) and also low oil temps and I'm sure its running slightly too rich and guzzling fuel.
Is there's a proper procedure for set-up, or is it a case of leaning off half a turn and then see how that affects things?
Rgs
Harv |
I have a slightly rich burning Housai, and would like to know more about the carb setup/tuning procedure - anyone???
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Stephen Hayne, Cyber Security Consultant, Professor Emeritus (retired)
443LM Nanchang CJA
http://selfsynchronize.com/hayne/plane/cj6.asp |
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wlannon(at)shaw.ca
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| Posted: Sun Oct 07, 2018 10:32 am Post subject: CJ6 Housai Mixture adjustment |
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Hi Stephan;
About all I can suggest is that you follow the procedure in the Maintenance
Manual and record the changes you have made by number of 'clicks" and
direction of movement (Rich or Lean)
Walt
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pennington.construction.i
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| Posted: Sun Oct 07, 2018 10:49 am Post subject: CJ6 Housai Mixture adjustment |
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Stephen
Forgive the question if it is too obvious, But I am assuming the gills are closed enough to produce CHT heat in the normal range on climb out ? I wouldn't blame mixture unless the gills were closed completely and you could not raise temps enough.
Mark
On Sun, Oct 7, 2018 at 2:38 PM Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
[quote]--> Yak-List message posted by: "Walter Lannon" <wlannon(at)shaw.ca (wlannon(at)shaw.ca)>
Hi Stephan;
About all I can suggest is that you follow the procedure in the Maintenance
Manual and record the changes you have made by number of 'clicks" and
direction of movement (Rich or Lean)
Walt
--
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jay-dub
Joined: 31 May 2014
Posts: 99
Location: UK
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| Posted: Mon Oct 08, 2018 2:19 pm Post subject: Re: CJ6 Housai Mixture adjustment |
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Mine is similar. My thought is the timing needs advancing as the stock tune allows them to run on 87 octane Chinese moonshine and we run them on 100LL in the UK. We need to do this with ours....
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Harv
Joined: 01 Jul 2010
Posts: 170
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| Posted: Tue Oct 09, 2018 5:13 am Post subject: Re: CJ6 Housai Mixture adjustment |
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An update to this,
We wound the mixture needle in 3 clicks (following the manual) making it leaner and also fitted a pair of re-wound mag coils, fuel burn is notably improved and the engine is so smooth now probably as a result of the fat sparks at the plugs.
From my translated logs the Chinese were running these on fuel with terrible Ron.
Rgs
Harv
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stephen.hayne
Joined: 01 Nov 2013
Posts: 59
Location: United States
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| Posted: Tue Oct 09, 2018 6:58 am Post subject: Re: CJ6 Housai Mixture adjustment |
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| Quote: |
Forgive the question if it is too obvious, But I am assuming the gills are closed enough to produce CHT heat in the normal range on climb out ? I wouldn't blame mixture unless the gills were closed completely and you could not raise temps enough.
Mark
| Quote: | --> Yak-List message posted by: "Walter Lannon" <wlannon>
Hi Stephen;
About all I can suggest is that you follow the procedure in the Maintenance
Manual and record the changes you have made by number of 'clicks" and
direction of movement (Rich or Lean)
Walt
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Gills closed/open as necessary to keep (or get) CHTs to stay below 200 in climb/maneuvering - I do like CHTs to be lower during cruise.
I will adjust a couple of clicks leaner and see how it performs. Thanks!
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_________________
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Stephen Hayne, Cyber Security Consultant, Professor Emeritus (retired)
443LM Nanchang CJA
http://selfsynchronize.com/hayne/plane/cj6.asp |
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