Free POWER NOW Mod, What up?
Posted January 30, 2003 - 02:32 PM
the pictures are of the ones others have made, chris did his with some tips from me, but no drawing..
i hope this clears up some of the confusion
A big thanks to David for his work in creating the .pdf file and the templates!
Posted January 30, 2003 - 02:59 PM
Posted January 30, 2003 - 03:29 PM
the template is from me, the pics from toyrona and chris from oz....
how is the template wrong?
Posted January 30, 2003 - 03:47 PM
Posted January 30, 2003 - 03:53 PM
ahh.. now i see where the confusion is.. the top of the T should be away from the motor.. that is what locks into the top and will not allow it to move forward, toward the motor,.. and yes, since each bike is slightly different (250,400,426 etc) you would file the part that extends towrad the slide on the edges to taper it to fit the carb throat.. so in reality, the bottom of the T is not the same width as just below the top of the T...
the photos are not from me.. they are someone elses.. the template is mine...
Posted January 30, 2003 - 08:59 PM
Now it will work...
Posted January 30, 2003 - 09:01 PM
and looks awesome!! thanks alot!
Posted January 30, 2003 - 09:40 PM
The spelling checker didn't pick that one up...
Posted January 30, 2003 - 10:53 PM
Posted January 30, 2003 - 11:32 PM
Posted January 31, 2003 - 04:17 AM
As I said many times, I'm nothing like a mechanic but I would like to understand what you guys are trying to do . What is this T-shaped plate for and how is your mod improving the engine performance?
If any of you wishes to redirect me with some links to already written explanations, I will be happy to do my homeworks .
Posted January 31, 2003 - 04:52 AM
At low throttle openings, this divider plate allows (the same vacuum) that normally draws off the ENTIRE area of the air horn to now draw off HALF (the lower half) of that same air horn. This results in GREATER VELOCITIES drawn from the lower chamber ONLY of the airhorn into the carb throat.
Greater air speeds means better atomization of fuel AT LOW THROTTLE OPENINGS AND REDUCES the typical 4 stroke lag (offset by a PROPERLY operating accelerator pump jet) often associated w/ 4 stroke engines. When the throttle (and slide) are > 1/2 open, the carb is drawing off both the upper and lower chambers of the airhorn the Power Now creates.
You may have read where a smaller carb is installed to increase low end torque. A large carb increases top end HP. The KTM 125/YZ125 have a large carb for sheer top end HP, AT THE EXPENSE OF LOW END TORQUE.
This is due to the venturi size (inside diameter) of the carb.
Posted January 31, 2003 - 07:25 AM
Thank you very much for this clear answer NH Kevin!
Posted January 31, 2003 - 10:24 AM
now email that explanation to EGO...lol...
hey, you get your head back yet? sending mine in soon...
Posted January 31, 2003 - 12:36 PM
Posted January 31, 2003 - 12:49 PM
true.. but remember, that as the slide is rising, the top half of the opening is blocked by the plate. what this also does is stop the turbulence caused by the air that hits the slide and is deflected downward in to the airstream going under the slide into the engine... so you now have the same engine vacuum acting on HALF the original carb venturi volume at any position below half throttle... the other chamber opens as the slide passes the plate at the halfway point.. is intended for low down power and response not all out HP...
Posted January 31, 2003 - 05:17 PM
Posted January 31, 2003 - 05:38 PM
hey, you get your head back yet? sending mine in soon
It is on it's way to NH RIGHT NOW!!!