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| | Welcome to our newest member, pualfleming | | » Recent Threads | | | | | Howdy 13-05-2012 10:13 PM 26-05-2012 05:05 PM | | | | | | | » Welcome to Pocket Bike Racing | | | Emulsion tube, atomiser Posted in Pocket Bikes Discussion  | 
13-12-2010, 09:13 PM
|  | Full Member | | Join Date: Apr 2010 Location: Greystanes, NSW
Posts: 48
| | | Emulsion tube, atomiser
I recently bought a 18mm Dellorto carb and was a bit surprised to see it fitted with a AN type atomiser which is supposed to be for a 4 stroke...
Do you guys really notice a difference between using the AN type and AU? Both with their correct type bush on top of course.
Cheers!
Pascal
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13-12-2010, 09:21 PM
|  | Full Member | | Join Date: Feb 2006
Posts: 960
| | Quote:
Originally Posted by pascal  I recently bought a 18mm Dellorto carb and was a bit surprised to see it fitted with a AN type atomiser which is supposed to be for a 4 stroke...
Do you guys really notice a difference between using the AN type and AU? Both with their correct type bush on top of course.
Cheers!
Pascal |
hi mate they come standard with the AN atomiser it makes the bike run richer as 4t's need the extra fuel if you want to change i have a few AU atomisers & the bush to go with it & i am happy to swap & i'll even remove & install the other for you i have changed many so it's pretty easy now lol & i am not to far from you
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13-12-2010, 10:08 PM
|  | Full Member | | Join Date: Nov 2008 Location: Blue Mountains, NSW
Posts: 922
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Realistically, you can run an AN atomiser, its just a matter of getting your jetting right. I run one with success, 74's run both types (AU and AN) before as have most of the other guys. It depends on your motor. I'm thinking that the more heavily worked it is, the better the response in the carb from it.
What needle and jet are you using? W23 with a 100 jet works nice.
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13-12-2010, 10:14 PM
| | Full Member | | Join Date: Apr 2010 Location: Greystanes, NSW
Posts: 48
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I have a 266 AU and the bush already, thanks for asking anyway. Havent have time to try them out yet tho.
At the moment I have a W18(installed) and also a W6(spare). I have tried nearly every jets from 86 to 103 by increment of 2 but its still not perfect. It is why I started to have a look somewhere else and was wondering about this AU AN tubes.
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13-12-2010, 10:19 PM
| | Full Member | | Join Date: Nov 2008 Location: Blue Mountains, NSW
Posts: 922
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What are the symptoms of your motor? is it running? will it rev? just it splutter out? Could be your coil..
Give us a clue as to whats happening, mate..
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13-12-2010, 10:27 PM
| | Full Member | | Join Date: Apr 2010 Location: Greystanes, NSW
Posts: 48
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Yeah motor is running pretty fine for what it is (morty's one Blueprinted blata big bore). It just has a dead spot on the rev range. But once you go over this spot it revs fine up to max.
Hard to identify what this dead spot is coming from. It kind of boags a bit or splutter, can't tell if its lack of air or fuel. Or maybe something completely different, or I just expect too much from a "cheap" engine.
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13-12-2010, 10:47 PM
| | Full Member | | Join Date: Feb 2006
Posts: 960
| | Quote:
Originally Posted by pascal Yeah motor is running pretty fine for what it is (morty's one Blueprinted blata big bore). It just has a dead spot on the rev range. But once you go over this spot it revs fine up to max.
Hard to identify what this dead spot is coming from. It kind of boags a bit or splutter, can't tell if its lack of air or fuel. Or maybe something completely different, or I just expect too much from a "cheap" engine. | i have a dyno that it can be tuned on for $50 p/h
flat spot could be a few things
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14-12-2010, 12:48 AM
| | Full Member | | Join Date: Apr 2010 Location: Greystanes, NSW
Posts: 48
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Yeah I saw in other posts that you had one of these, pretty interesting, will find the time to fiddle around with the bike a bit more and once I give up it might be a good idea, and also to see what all my work has achieved.
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