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What is really Sirio XXX?
May be it is wrong question, but I had no luck to find something more on internet. I got chance to buy new Sirio XXX (package with pipe, manifold) It costs 229 Euro.
My problem is that I can not find any official information about this engine. I also visited "star-motor" Sirio page, but they are silent about XXX model. I found only few info about parameters (but not about revolution range or possible reached power output!), but they were distributor pages only. Do you have some relevant source from manufacturer? What do you think about price? Thank you in advance. |
Here are the spots i found to order from!
rctorco.com sirio s12 xxxv $350 ebay.com sirio s12 xxx $280 rcmarket.com sirio s12 xxxv w/ pipe $350 amainhobbies.com sirio s12 xxx $270 as for your question though, i am not able to ind anything either! :confused: |
Because the support sucks! Kyosho is not the US distributor anymore.
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Anybody know if the .12 EVO4STI rod is the same as the XXX rod. (or does somebody have the part number for the XXX rod?
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Originally Posted by Scott Fisher
(Post 6380781)
Anybody know if the .12 EVO4STI rod is the same as the XXX rod. (or does somebody have the part number for the XXX rod?
Noel |
Originally Posted by Scott Fisher
(Post 6380781)
Anybody know if the .12 EVO4STI rod is the same as the XXX rod. (or does somebody have the part number for the XXX rod?
try www.the-border.com they might have it |
Factory needle settings for the 12 evo 4?
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Originally Posted by Seisick
(Post 6472693)
Factory needle settings for the 12 evo 4?
High Speed – 4 to 5 turns out Low Speed – 2 to 2.50 turns out Mid Range - Flush then ¼ turns out Otra cosa muy importante, el Sirio se regula en caliente y no en frío, lo normal es que el motor en frío tienda a pararse y joder, y en caliente sea estable, esto debido al cuerpo de composite del carburador. saludos afm |
Originally Posted by afm
(Post 6473370)
Sirio .12 Evo 4 General Carburetor Settings
High Speed – 4 to 5 turns out Low Speed – 2 to 2.50 turns out Mid Range - Flush then ¼ turns out Otra cosa muy importante, el Sirio se regula en caliente y no en frío, lo normal es que el motor en frío tienda a pararse y joder, y en caliente sea estable, esto debido al cuerpo de composite del carburador. saludos afm |
Originally Posted by Seisick
(Post 6473855)
copiado gracias, para marco, no se que hizo a las agujas
bye afm |
1 Attachment(s)
Hi, i have some questions about sirio s.12 xxx.What is the default setting of this screw? Αnd last one, what it will happen if i turn that screw clockwise?
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Originally Posted by cr0c0dil3
(Post 6475715)
Hi, i have some questions about sirio s.12 xxx.What is the default setting of this screw? Αnd last one, what it will happen if i turn that screw clockwise?
That brass screw, is actually the main jet of the carburator, commonly called mid range needle. In Sirio engines the default position is 1/4 of a turn opened from closed. The dimensions of the this main jet (brass needle), its position relative to the venturi dictates the fuel curve of the carburetor (or how much fuel enters by each cfm of air drawn into the engine at a relative carb opening). At idle speed, the engine is controlled by the low-end needle, and how much air passes into the engine via the position of the barrel. But when you start to move the barrel to allow more air to pass, in fact, you're moving the low-end needle too, allowing at the same time more fuel to pass too. Depending at which opening of the barrel the main jet (brass needle) is totally uncovered, and the carburetor starts being mandated by the adjustment of the high-end needle, and how much fuel this last adjustment permits to pass can be varied, and the power band of the engine too, but slightly, by screwing or unscrewing the main jet (mid range needle) and readjusting the low-end needle. But be careful, screwing the main jet too further into the venturi can lead to mix and temperature problems, in fact, you're leaning the mid rpms, where the engine operates at partial opening of the carb, this can lead to problems and erratic operation. This is why, on almost all the engine booklets they warn you about not touching this adjustment, because it comes factory tuned to it’s ideal average. The position of the main jet, relative to the venturi also changes the position on where and how much the vortex of air that enters into the carb varies how finely the fuel is sprayed into the air that enters (fuel is converted into a mist to be burned), a drop, no matter how little it is, doesn't burn and can create many and serious problems. This last can lead up to a conrod breakage (common) or piston breakage (not common but seen some) due to hydro lock. Hope its clear AFM |
AFM enough said! :tire::nod::tire: i was also working on responding, but my computer turned off low battery :mad:... :lol:
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Originally Posted by afm
(Post 6476986)
That brass screw, is actually the main jet of the carburator, commonly called mid range needle. In Sirio engines the default position is 1/4 of a turn opened from closed.
The dimensions of the this main jet (brass needle), its position relative to the venturi dictates the fuel curve of the carburetor (or how much fuel enters by each cfm of air drawn into the engine at a relative carb opening). At idle speed, the engine is controlled by the low-end needle, and how much air passes into the engine via the position of the barrel. But when you start to move the barrel to allow more air to pass, in fact, you're moving the low-end needle too, allowing at the same time more fuel to pass too. Depending at which opening of the barrel the main jet (brass needle) is totally uncovered, and the carburetor starts being mandated by the adjustment of the high-end needle, and how much fuel this last adjustment permits to pass can be varied, and the power band of the engine too, but slightly, by screwing or unscrewing the main jet (mid range needle) and readjusting the low-end needle. But be careful, screwing the main jet too further into the venturi can lead to mix and temperature problems, in fact, you're leaning the mid rpms, where the engine operates at partial opening of the carb, this can lead to problems and erratic operation. This is why, on almost all the engine booklets they warn you about not touching this adjustment, because it comes factory tuned to it’s ideal average. The position of the main jet, relative to the venturi also changes the position on where and how much the vortex of air that enters into the carb varies how finely the fuel is sprayed into the air that enters (fuel is converted into a mist to be burned), a drop, no matter how little it is, doesn't burn and can create many and serious problems. This last can lead up to a conrod breakage (common) or piston breakage (not common but seen some) due to hydro lock. Hope its clear AFM |
AFM you said ''In Sirio engines the default position is 1/4 of a turn opened from closed.''
Is that correct because i though it was from flush. |
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