Dustin_Drews
04-28-2010, 09:24 PM
Ok finally got TRX-Y assembled enough to go up and down the street. I did a few heat cycles to break in the engine so all is well.
Ok the only issue I have now is I have no HIT at all or top end.
Now Before you say its jetting hear me out!
It seems to be running like it is rich on the top end so I went down a few sizes keeping an eye on the plug and it went lean and still no help.
So i went richer till it was black and still no help.
I checked the timing it is right at the F when at idle when I give it a little throttle the it moves left of the pointer about 3/8s of an inch Toward the the T.
Is it ever going to need to move more then that?
The next thing i did was move the LRD adjustable pipe all the way togeather to bring out more top end. This helped a bunch but it still has a flat top end. Almost like it is constipated? Not cleaning out and giving that good pull that most Rs have? But it is not muffled... I tired it with no silencer thinking it could be plugged and no help.
I checked the reeds, they are new no chips or cracks, ect.
I did a compression check and it was right at 190 after a few kicks
The carb is a 38mm PWK that is opening 100%
the needle is second from the bottom. I have moved it around but it does not help.
50 pilot.
172 main any lower it is to lean!
I can get it to adjusted to Idle at 475 rpm so that rules out any air leaks.
It is a 310 so I should not be over carb with the 38mm
But that is what it seems like?
What am I over looking?
Starts 1 kick all the time hot or cold just no top end it never comes on the pipe?
God Bless,
Thanks for the help
Dustin
Ok the only issue I have now is I have no HIT at all or top end.
Now Before you say its jetting hear me out!
It seems to be running like it is rich on the top end so I went down a few sizes keeping an eye on the plug and it went lean and still no help.
So i went richer till it was black and still no help.
I checked the timing it is right at the F when at idle when I give it a little throttle the it moves left of the pointer about 3/8s of an inch Toward the the T.
Is it ever going to need to move more then that?
The next thing i did was move the LRD adjustable pipe all the way togeather to bring out more top end. This helped a bunch but it still has a flat top end. Almost like it is constipated? Not cleaning out and giving that good pull that most Rs have? But it is not muffled... I tired it with no silencer thinking it could be plugged and no help.
I checked the reeds, they are new no chips or cracks, ect.
I did a compression check and it was right at 190 after a few kicks
The carb is a 38mm PWK that is opening 100%
the needle is second from the bottom. I have moved it around but it does not help.
50 pilot.
172 main any lower it is to lean!
I can get it to adjusted to Idle at 475 rpm so that rules out any air leaks.
It is a 310 so I should not be over carb with the 38mm
But that is what it seems like?
What am I over looking?
Starts 1 kick all the time hot or cold just no top end it never comes on the pipe?
God Bless,
Thanks for the help
Dustin