Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

stock jets for 503 Rotax

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kolb-List
View previous topic :: View next topic  
Author Message
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Sat Nov 23, 2019 3:05 pm    Post subject: stock jets for 503 Rotax Reply with quote

Does anyone know what jets came stock in the Bing carbs on a 503 rotax? My plane/engine came from Taos NM area and was rejected for the 7100 ft altitude and the log books do not say what they took out.
I am in Riverside Ca now with a 730 ft elevation. Also does anyone have a set of stock jets that they took out of their carbs during re-jetting?? Thanks, Chic


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
George Alexander



Joined: 10 Jan 2006
Posts: 237
Location: SW Florida

PostPosted: Sat Nov 23, 2019 3:39 pm    Post subject: Re: stock jets for 503 Rotax Reply with quote

chic wrote:
Does anyone know what jets came stock in the Bing carbs on a 503 rotax?
. S . N . I . P
Thanks, Chic


Try this for information on jetting.

https://www.cps-parts.com/cps/pdf/Part10.pdf


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
George Alexander
FS II R503
E-LSA N709FS
http://www.oh2fly.net
Back to top
View user's profile Send private message Visit poster's website
rickofudall



Joined: 19 Sep 2009
Posts: 1364
Location: Udall, KS, USA

PostPosted: Sat Nov 23, 2019 4:01 pm    Post subject: stock jets for 503 Rotax Reply with quote

Chic, As it happens I had my Bing manual next to my chair.  Do you have a carb no.?  It's usually found on a little tab on the barrel of the carb.  Otherwise jetting is all over the map.  It also changes if you have the inlet damper.  Here are examples from three different carburetor no.

Carb No.        Rotax Part No.    Main      Idle      Jet Needle      Needle Jet
54/36/1741     996294               158         45           8L2                 2.74
54/36/1803     996-952              195         45         15K2                 2.72
54/36/1805     996954                168        45          8L2                  2.74
All are listed for the 503.  I suspect the large jets of the 1803 engine are because it's a single carb engine.  I cannot find a recommendation for jetting in the current IPC except for the 582's.  If you can find the carb model I'll look up the exact jetting for you.
Rick
On Sat, Nov 23, 2019 at 5:08 PM chic <gcechini(at)msn.com (gcechini(at)msn.com)> wrote:

Quote:
--> Kolb-List message posted by: "chic" <gcechini(at)msn.com (gcechini(at)msn.com)>

Does anyone know what jets came stock in the Bing carbs on a 503 rotax? My plane/engine came from Taos NM area and was rejected for the 7100 ft altitude and the log books do not say what they took out.
I am in Riverside Ca now with a 730 ft elevation. Also does anyone have a set of stock jets that they took out of their carbs during re-jetting??  Thanks, Chic




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=493390#493390






===========
br> fts!)
r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
          -Matt Dralle, List Admin.
===========
-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
          -Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========




--
“Blessed are the cracked, for they shall let in the light.”   Groucho Marx


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
The smallest miracle right in front of you is enough to make you happy....
Back to top
View user's profile Send private message Send e-mail
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Wed Nov 27, 2019 10:56 pm    Post subject: Re: stock jets for 503 Rotax Reply with quote

Hi Rick, thanks for the info. I found the carb #'s, one looks like 54/36/2002 and the other a little hard to read but I think it is 54/36/1546? Would Rotax put 2 different carb #'s on an engine from the factory?? Maybe one of mine has been changed out. Could you look up those #s and see what the jets originally were? Thanks, Chic

- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
rickofudall



Joined: 19 Sep 2009
Posts: 1364
Location: Udall, KS, USA

PostPosted: Thu Nov 28, 2019 12:31 pm    Post subject: stock jets for 503 Rotax Reply with quote

Wouldn't you know it.  The Bing manual doesn't show either of those carb numbers.  It does have the last jetting offered by Rotax.  For the 503DC: 158 Main Jet, a 45 idle jet, 2.70 Needle jet, an 11K2 needle, the clip should be in the middle groove on the needle and the idle screw adjustment should be .5 (1/2) turn in after contact with the slide.  I'm assuming you don't have the intake silencer. If you do then the Main jet goes down to a 148, the needle jet is a 2.68 and the idle screw is turned in one full turn after contact.  The idle jet and the jet needle stay the same.

Rick
On Thu, Nov 28, 2019 at 1:00 AM chic <gcechini(at)msn.com (gcechini(at)msn.com)> wrote:

Quote:
--> Kolb-List message posted by: "chic" <gcechini(at)msn.com (gcechini(at)msn.com)>

Hi Rick, thanks for the info. I found the carb #'s, one looks like 54/36/2002 and the other a little hard to read but I think it is 54/36/1546?  Would Rotax put 2 different carb #'s on an engine from the factory?? Maybe one of mine has been changed out. Could you look up those #s and see what the jets originally were? Thanks, Chic




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=493512#493512






===========
br> fts!)
r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
          -Matt Dralle, List Admin.
===========
-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
          -Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========




--
“Blessed are the cracked, for they shall let in the light.”   Groucho Marx


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
The smallest miracle right in front of you is enough to make you happy....
Back to top
View user's profile Send private message Send e-mail
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Fri Nov 29, 2019 10:38 pm    Post subject: Re: stock jets for 503 Rotax Reply with quote

Thanks so much for the info guys! Really appreciate it! NOW..... anybody out there have any of these jets they would be willing to part with?? Used jets would be fine with me! Thanks, Chic

- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
rickofudall



Joined: 19 Sep 2009
Posts: 1364
Location: Udall, KS, USA

PostPosted: Sat Nov 30, 2019 7:45 pm    Post subject: stock jets for 503 Rotax Reply with quote

LEAF and Lockwood have them, so does the Bing Agency in Council Grove, KS.  Have you checked what is in your carbs now?  Most probably you need a main jet and you may need to adjust the clip on the needle.  It just depends on what you have now.

Rick
On Sat, Nov 30, 2019 at 12:41 AM chic <gcechini(at)msn.com (gcechini(at)msn.com)> wrote:

Quote:
--> Kolb-List message posted by: "chic" <gcechini(at)msn.com (gcechini(at)msn.com)>

Thanks so much for the info guys! Really appreciate it! NOW..... anybody out there have any of these jets they would be willing to part with?? Used jets would be fine with me! Thanks, Chic




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=493606#493606






===========
br> fts!)
r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
          -Matt Dralle, List Admin.
===========
-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
          -Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========




--
“Blessed are the cracked, for they shall let in the light.”   Groucho Marx


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List

_________________
The smallest miracle right in front of you is enough to make you happy....
Back to top
View user's profile Send private message Send e-mail
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Thu Dec 05, 2019 8:58 am    Post subject: Re: stock jets for 503 Rotax Reply with quote

OKAY....I pulled the bowls off my carbs and the main jets are 158. I was told that the carbs were rejetted for the 7100 ft altitude of Taos but it appears it was not. What the machine does have is a HACman inflight mixture control installed. That is what they must have meant when I was told it was rejetted. The actual owner of the plane had passed away and I got the info 2nd hand. I have been on the HACman website and this thing looks interesting but still trying to figure out how it works exactly. Don't know if it will really be a benefit to me here in the lower altitudes of SoCal (740ft). Thanks to everyone who supplied info/insight to the carb jetting, I will keep this info as it was helpful! Chic

- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
zeprep251(at)aol.com
Guest





PostPosted: Fri Dec 06, 2019 9:41 am    Post subject: stock jets for 503 Rotax Reply with quote

I believe the Hacman allows you to move the jet needle into or out of the needle jet to lean or richen the cruise mixture according to the exhaust gas temperature. Most likely around 1100-1200 at cruise but down below 900-1000 at full power

Sent from my iPhone

Quote:
On Dec 5, 2019, at 11:58 AM, chic <gcechini(at)msn.com> wrote:



OKAY....I pulled the bowls off my carbs and the main jets are 158. I was told that the carbs were rejetted for the 7100 ft altitude of Taos but it appears it was not. What the machine does have is a HACman inflight mixture control installed. That is what they must have meant when I was told it was rejetted. The actual owner of the plane had passed away and I got the info 2nd hand. I have been on the HACman website and this thing looks interesting but still trying to figure out how it works exactly. Don't know if it will really be a benefit to me here in the lower altitudes of SoCal (740ft). Thanks to everyone who supplied info/insight to the carb jetting, I will keep this info as it was helpful! Chic




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=493725#493725











- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
zeprep251(at)aol.com
Guest





PostPosted: Fri Dec 06, 2019 11:51 am    Post subject: stock jets for 503 Rotax Reply with quote

Just checked out the HACman web site. Latest generation controls bowl pressure to lean or richen mixture. Lots different from a few years back. Better see what you have and then get the manual from HACman

Sent from my iPhone

Quote:
On Dec 5, 2019, at 11:58 AM, chic <gcechini(at)msn.com> wrote:



OKAY....I pulled the bowls off my carbs and the main jets are 158. I was told that the carbs were rejetted for the 7100 ft altitude of Taos but it appears it was not. What the machine does have is a HACman inflight mixture control installed. That is what they must have meant when I was told it was rejetted. The actual owner of the plane had passed away and I got the info 2nd hand. I have been on the HACman website and this thing looks interesting but still trying to figure out how it works exactly. Don't know if it will really be a benefit to me here in the lower altitudes of SoCal (740ft). Thanks to everyone who supplied info/insight to the carb jetting, I will keep this info as it was helpful! Chic




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=493725#493725











- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Fri Dec 06, 2019 4:37 pm    Post subject: Re: stock jets for 503 Rotax Reply with quote

It looks like I have the 1st Gen version of the HACman. They all work the same, leaning the mixture of the carbs by float bowl pressure regulation. Here is an article I found on an Avid/kitfox site that explains it and shows how to do the same thing for lots less $$$.
http://avidfoxflyers.com/index.php?/topic/5717 called -leaning-the-carbs-for-altitude-on-the-cheap/

From what I am reading, it doesn't seem to do much for you below 4000ft but above that there is supposedly a notable difference in performance/fuel consumption. Chic


- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
chic



Joined: 12 Apr 2019
Posts: 10
Location: Riverside Calif

PostPosted: Fri Dec 06, 2019 4:40 pm    Post subject: Re: stock jets for 503 Rotax Reply with quote

http://avidfoxflyers.com/index.php?/topic/5717-leaning-the-carbs-for-altitude-on-the-cheap/ Sorry, pasted the article wrong....Here it is again!

- The Matronics Kolb-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kolb-List
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kolb-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group