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choke cable query

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rowlandcarson(at)gmail.co
Guest

Posted: Wed Apr 06, 2016 9:55 am Post subject: choke cable query

I’ve got to the stage of hanging my Rotax 912ULS engine on my Europa XS monowheel fuselage, just to check how and where various things will fit and where holes have to be made in the firewall, etc. (The firewall is not yet fitted at this stage and the engine will be coming off again later to fit that.)



I’ve connected the choke cables to the carbs but am puzzled by the resulting action at the knob. It seems to need quite a bit of effort to pull it out, and it will not stay in the out (ie choke on) position, but slides back in to almost the rest position immediately.



I routed the cables the same way as the throttle cables, through the small gap between the top tube of the landing gear frame and the corner of the phenolic firewall, and they seem quite comfortable there. I have fitted the SkyDrive carb heaters which move the carbs aftwards a little, but I don't think that has a significant effect on the cable routing.



I had to snip a tiny bit off the stiff soldered ends of the cable inners in order to persuade them round the right-angle guide on the carbs, but otherwise I believe I have followed the manual exactly.



Is it intended that the choke knob has to be held out manually? Or is there some trick I’ve missed?



in friendship



Rowland



| Rowland Carson          ... that's Rowland with a 'w' ...

| <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

| Skype, Twitter: rowland_carson      Facebook: Rowland Carson

| pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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:

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Burrilla

Joined: 25 Apr 2015
Posts: 184

Posted: Wed Apr 06, 2016 10:06 am Post subject: choke cable query

On my Tri-Gear the Choke also slides back in and I hold it out during start and warm up. slowly letting it go back in as the engine warms and no choke required.



If it locked out would that potentially give you a full choke out if you forgot to release it and push back in?



Mine also requires effort to pull out which I again perceive as no great problem providing you keep the cable lubricated and its not due to chafing.



Alan

G-OBJT

 	  Quote: 	
		   On 6 Apr 2016, at 18:53, Rowland Carson <rowlandcarson(at)gmail.com> wrote:

 

 

 

 I’ve got to the stage of hanging my Rotax 912ULS engine on my Europa XS monowheel fuselage, just to check how and where various things will fit and where holes have to be made in the firewall, etc. (The firewall is not yet fitted at this stage and the engine will be coming off again later to fit that.)

 

 I’ve connected the choke cables to the carbs but am puzzled by the resulting action at the knob. It seems to need quite a bit of effort to pull it out, and it will not stay in the out (ie choke on) position, but slides back in to almost the rest position immediately.

 

 I routed the cables the same way as the throttle cables, through the small gap between the top tube of the landing gear frame and the corner of the phenolic firewall, and they seem quite comfortable there. I have fitted the SkyDrive carb heaters which move the carbs aftwards a little, but I don't think that has a significant effect on the cable routing.

 

 I had to snip a tiny bit off the stiff soldered ends of the cable inners in order to persuade them round the right-angle guide on the carbs, but otherwise I believe I have followed the manual exactly.

 

 Is it intended that the choke knob has to be held out manually? Or is there some trick I’ve missed?

 

 in friendship

 

 Rowland

 

 | Rowland Carson          ... that's Rowland with a 'w' ...

 | <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

 | Skype, Twitter: rowland_carson      Facebook: Rowland Carson

 | pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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?Europa-List

pete(at)lawless.info
Guest

Posted: Wed Apr 06, 2016 10:11 am Post subject: choke cable query

No Roland you have not missed anything.  You hold the choke with one 

hand while pressing the starter with your second hand and holding the 

stick back with your third.



Pete

G-RMAC Classic #109



On 06/04/16 18:53, Rowland Carson wrote:

 	  Quote: 	
		   



 I’ve got to the stage of hanging my Rotax 912ULS engine on my Europa XS monowheel fuselage, just to check how and where various things will fit and where holes have to be made in the firewall, etc. (The firewall is not yet fitted at this stage and the engine will be coming off again later to fit that.)



 I’ve connected the choke cables to the carbs but am puzzled by the resulting action at the knob. It seems to need quite a bit of effort to pull it out, and it will not stay in the out (ie choke on) position, but slides back in to almost the rest position immediately.



 I routed the cables the same way as the throttle cables, through the small gap between the top tube of the landing gear frame and the corner of the phenolic firewall, and they seem quite comfortable there. I have fitted the SkyDrive carb heaters which move the carbs aftwards a little, but I don't think that has a significant effect on the cable routing.



 I had to snip a tiny bit off the stiff soldered ends of the cable inners in order to persuade them round the right-angle guide on the carbs, but otherwise I believe I have followed the manual exactly.



 Is it intended that the choke knob has to be held out manually? Or is there some trick I’ve missed?



 in friendship



 Rowland



 | Rowland Carson          ... that's Rowland with a 'w' ...

 | <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

 | Skype, Twitter: rowland_carson      Facebook: Rowland Carson

 | pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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?Europa-List

dpark748(at)icloud.com
Guest

Posted: Wed Apr 06, 2016 10:12 am Post subject: choke cable query

You only have to hold out for 10-15 seconds and slowly change to low throttle setting!

Dave G-LDVO



Sent from my iPhone

 	  Quote: 	
		   On 6 Apr 2016, at 18:53, Rowland Carson <rowlandcarson(at)gmail.com> wrote:

 

 

 

 Iâ€™ve got to the stage of hanging my Rotax 912ULS engine on my Europa XS monowheel fuselage, just to check how and where various things will fit and where holes have to be made in the firewall, etc. (The firewall is not yet fitted at this stage and the engine will be coming off again later to fit that.)

 

 Iâ€™ve connected the choke cables to the carbs but am puzzled by the resulting action at the knob. It seems to need quite a bit of effort to pull it out, and it will not stay in the out (ie choke on) position, but slides back in to almost the rest position immediately.

 

 I routed the cables the same way as the throttle cables, through the small gap between the top tube of the landing gear frame and the corner of the phenolic firewall, and they seem quite comfortable there. I have fitted the SkyDrive carb heaters which move the carbs aftwards a little, but I don't think that has a significant effect on the cable routing.

 

 I had to snip a tiny bit off the stiff soldered ends of the cable inners in order to persuade them round the right-angle guide on the carbs, but otherwise I believe I have followed the manual exactly.

 

 Is it intended that the choke knob has to be held out manually? Or is there some trick Iâ€™ve missed?

 

 in friendship

 

 Rowland

 

 | Rowland Carson          ... that's Rowland with a 'w' ...

 | <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

 | Skype, Twitter: rowland_carson      Facebook: Rowland Carson

 | pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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?Europa-List

rlborger(at)mac.com
Guest

Posted: Wed Apr 06, 2016 11:15 am Post subject: choke cable query

Rowland,



FWIW.  That is the way my “Choke” has operated from day one.   



I hold the choke out when starting cold.  Use the throttle to set about 2000-2200 RPM to warm up.  Then, continuing to hold the “Choke” knob, allow it to slowly retreat to maintain that 2000-2200 RPM as the engine warms and RPM slowly increases. Kind of gives me something to do while monitoring Oil Pressure, Oil Temp, Coolant Temp, CHT & EGT while warming the engine.  My “Choke” will hold with about 1/4” of travel remaining.  I have to be on the throttle when I push it in that last quarter inch as the engine RPM will drop quite a bit and I have to add throttle to get it back above 1800 RPM.



I don’t know of any means of increasing friction in the cable system to allow the cable to hold against the springs on the carbs.



Hope this helps.  Maybe someone else can come up with a better idea.



Blue skies & tailwinds,

Bob Borger

Europa XS Tri, Rotax 914, Airmaster C/S Prop (85 hrs).

Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP

3705 Lynchburg Dr.

Corinth, TX  76208-5331

Cel: 817-992-1117

rlborger(at)mac.com



On Apr 6, 2016, at 12:53 PM, Rowland Carson <rowlandcarson(at)gmail.com> wrote:






I’ve got to the stage of hanging my Rotax 912ULS engine on my Europa XS monowheel fuselage, just to check how and where various things will fit and where holes have to be made in the firewall, etc. (The firewall is not yet fitted at this stage and the engine will be coming off again later to fit that.)



I’ve connected the choke cables to the carbs but am puzzled by the resulting action at the knob. It seems to need quite a bit of effort to pull it out, and it will not stay in the out (ie choke on) position, but slides back in to almost the rest position immediately.



I routed the cables the same way as the throttle cables, through the small gap between the top tube of the landing gear frame and the corner of the phenolic firewall, and they seem quite comfortable there. I have fitted the SkyDrive carb heaters which move the carbs aftwards a little, but I don't think that has a significant effect on the cable routing.



I had to snip a tiny bit off the stiff soldered ends of the cable inners in order to persuade them round the right-angle guide on the carbs, but otherwise I believe I have followed the manual exactly.



Is it intended that the choke knob has to be held out manually? Or is there some trick I’ve missed?



in friendship



Rowland



| Rowland Carson          ... that's Rowland with a 'w' ...

| <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

| Skype, Twitter: rowland_carson      Facebook: Rowland Carson

| pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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?Europa-List

rlborger(at)mac.com
Guest

Posted: Wed Apr 06, 2016 11:18 am Post subject: choke cable query

Pete,



And don’t forget the throttle with your fourth hand!



Blue skies & tailwinds,

Bob Borger

Europa XS Tri, Rotax 914, Airmaster C/S Prop (75 hrs).

Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP

3705 Lynchburg Dr.

Corinth, TX  76208-5331

Cel: 817-992-1117

rlborger(at)mac.com



On Apr 6, 2016, at 1:10 PM, Pete Lawless <pete(at)lawless.info> wrote:






No Roland you have not missed anything.  You hold the choke with one hand while pressing the starter with your second hand and holding the stick back with your third.



Pete

G-RMAC Classic #109

- The Matronics Europa-List Email Forum -

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rowlandcarson(at)gmail.co
Guest

Posted: Thu Apr 07, 2016 4:29 am Post subject: choke cable query

On 2016-04-06, at 19:10, Pete Lawless <pete(at)lawless.info> wrote:



 	  Quote: 	
		   No Roland you have not missed anything.  You hold the choke with one hand while pressing the starter with your second hand and holding the stick back with your third.


	


Thanks to Pete and all the others who confirmed my suspicions!



in friendship



Rowland



| Rowland Carson          ... that's Rowland with a 'w' ...

| <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

| Skype, Twitter: rowland_carson      Facebook: Rowland Carson

| pictures: http://picasaweb.google.com/rowlandcarson

- The Matronics Europa-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?Europa-List

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