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Kart4fun
Joined: 08 Oct 2006
Posts: 404
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 Posted: Mon Oct 09, 2006 12:35 pm Post subject: Max Carb set up. |
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Did anyone read the comments on Ekarting news from Tom Barth regarding the emulsion tube on the Max Dellorto ?.
Tom ( a VERY experienced Dellorto expert) is convinced the max is fitted with the wrong tube --one designed for a 4 stroke !
He has tested with the equivalent "2 stroke" tube (fewer cross holes) and reports a much more drivable result.
I never could understand why the Max had such a flat spot at 7-8 krpm.
Maybe this is part of the answer ? |
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Stefan Rzadzinski
Joined: 28 Sep 2006
Posts: 260
Location: Canada
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| Posted: Tue Oct 10, 2006 11:13 pm Post subject: interesting |
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sounds interesting, I wonder if Rotax will look into that?  |
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John Savage
Joined: 27 Sep 2006
Posts: 897
Location: UK
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| Posted: Wed Oct 11, 2006 6:23 am Post subject: |
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Maybe they will but one thing is certain the Scrutineers will 
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Dellorto, Mikuni and Keihin Jetting & Kart Setup Software
www.rotaxjetting.com |
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Kart4fun
Joined: 08 Oct 2006
Posts: 404
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| Posted: Thu Oct 12, 2006 4:14 am Post subject: |
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Hopefully Rotax (or someone close to them) will check this out.
Its in their interest to make sure these things are correctly specified.
But it is difficult to believe that they could have had it fundamentally wrong for so long, especially with so many self proclaimed "experts" in the field involved. |
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John Savage
Joined: 27 Sep 2006
Posts: 897
Location: UK
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| Posted: Thu Oct 12, 2006 6:56 am Post subject: |
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| Quote: | But it is difficult to believe that they could have had it fundamentally wrong for so long, especially with so many self proclaimed "experts" in the field involved.
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They did not get it wrong, they specified a set-up and gave everybody a warrantee.
If we were allowed to set the carb up as we wanted then the warrantee would cost Rotax a fortune. This is not an all out racing engine; its designed as a long life engine and the karting world likes the idea. Rotax have no intensions of turning it into formula were the engines last for 30 minutes before they require a rebuild if that’s what you want then ICA and FA are the place for you.
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Kart4fun
Joined: 08 Oct 2006
Posts: 404
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| Posted: Thu Oct 12, 2006 11:39 am Post subject: |
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Thats B.S. john.
The emulsion tube is not going to make the difference between life and death of the motor, there are a 100 things more critical than that.
BUT getting the correct tube spec MAY just help smooth out the powe curve.
Or do you not agree that the Max has a crap power delivery ? |
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John Savage
Joined: 27 Sep 2006
Posts: 897
Location: UK
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| Posted: Thu Oct 12, 2006 12:03 pm Post subject: |
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Sorry my mistake, all this time I have spent under the illusion that it was the needlejet in combination with the needle that controlled the mixture from ¼ to ¾ throttle opening, well we all learn something every day. 
ps please list the other 99 
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jacksi
Joined: 14 Nov 2006
Posts: 40
Location: malta
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| Posted: Mon Nov 27, 2006 7:52 pm Post subject: |
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what do you think of the new floats and emulsiopn tube rotax has? what difference will it have
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jacksi racing
malta |
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