Today's Message Index:
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1. 07:37 AM - Carb Jetting (BobbyPaulk@comcast.net)
2. 08:05 AM - Re: Carb Jetting (GERALD A. APPLEFELD)
3. 12:58 PM - Re: Carb Jetting (George Andre)
Message 1
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List
Finally finished up the Conditional Inspection and flew yesterday. Changing out
the 285 needle jet to a 290 dropped the max EGT on the hottest cylinder from
1425 to 1349 with most cylinders about 1220 to 1250. All cylinders were at or
way under 300 deg. CHT. This was taken at 1200' AGL turning 2750 RPM @ 24" MP
and indicating 124 mph
Bobby ( age 75 )
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Sensenich 64" x 51" Prop
Bing Carb 260 Main & 290 Needle Jet
Status - Flying 188 hrs.
Do Not Archive
Message 2
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| Subject: | Re: Carb Jetting |
Bobby,
What did you get for fuel flow with the 2.90 jet. I started using that
and got a higher fuel flow-over 6 GPH at cruise. Like you my EGT's and
CHT are good with it.
Jerry
On 9/20/2013 10:37 AM, BobbyPaulk@comcast.net wrote:
> List
> Finally finished up the Conditional Inspection and flew yesterday.
> Changing out the 285 needle jet to a 290 dropped the max EGT on the
> hottest cylinder from 1425 to 1349 with most cylinders about 1220 to
> 1250. All cylinders were at or way under 300 deg. CHT. This was taken
> at 1200' AGL turning 2750 RPM @ 24" MP and indicating 124 mph
> Bobby ( age 75 )
>
> *
>
>
> *
Message 3
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| Subject: | Re: Carb Jetting |
If at 1200 AGL, are you in Colorado or Florida? Makes about a 6000 foot diff
erence. Other big question is how does the speed and fuel burn/flow change w
ith the new jet? I expect you traded cooler EGT for slower speed and less ec
onomy. (And sooty spark plugs).
Sent from my iPhone
On Sep 20, 2013, at 9:37 AM, BobbyPaulk@comcast.net wrote:
> List
> Finally finished up the Conditional Inspection and flew yesterday. Changin
g out the 285 needle jet to a 290 dropped the max EGT on the hottest cylinde
r from 1425 to 1349 with most cylinders about 1220 to 1250. All cylinders we
re at or way under 300 deg. CHT. This was taken at 1200' AGL turning 2750 RP
M @ 24" MP and indicating 124 mph
>
>
> Bobby ( age 75 )
> Zodiac 601 XL "B"
> Jabiru 3300 S/N 1141
> Sensenich 64" x 51" Prop
> Bing Carb 260 Main & 290 Needle Jet
> Status - Flying 188 hrs.
>
> Do Not Archive
>
>
>
>
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