Give me your opinion please...

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Rmadrid7

Well-Known Member
Messages
158
Location
Houston Tx
This is my first run after 10 tanks break in procedure. Please give me your opinion in anything you see wrong and I can improve ( tunning etc.)

 
I'm not 100% sure what causes that weird lean warble sound your having whenever you come off a high speed pass. Like at the 29-32 second spot.

For me, I'd want to richen the LSN and HSN as it sounds like it's starving a bit when the WOT pass uses up all the fuel in the crank case. It did it really bad near the end too.
 
I'm not 100% sure what causes that weird lean warble sound your having whenever you come off a high speed pass. Like at the 29-32 second spot.

For me, I'd want to richen the LSN and HSN as it sounds like it's starving a bit when the WOT pass uses up all the fuel in the crank case. It did it really bad near the end too.

Thank you both for you observations... I really still learning, and the best way is to hear others observations... I will rich both needle and see if this warble goes away. I keep you posted.
Please, what is: WOT?

thank you
 
Wide open throttle.

I try to have mine tuned so at the end of a WOT pass, the engine will drop down to a normal idle pretty quickly. It's usually a tad on the rich side, but also leaves more room for not fussing with it constantly to keep it "perfect".

When you get that weird hollow 'wah wah wah wah' sound after a high speed run, usually means it's scavanging for fuel. This can be caused be either too lean on the HSN (high speed needle) and just going too lean, or the LSN (low speed needle) is too lean to catch up once you come off the throttle. Or a little of both.

Just remember, adjusting the HSN does affect the LSN range, so perhaps richen the HSN a bit, see how it runs, then adjust the LSN to try to take up the slack.
 
ohh... Later on that afternoon was much better. But i will rich it, because the temp. was around 240-250 fahrenheit. So probably i need to rich a little bit.
Those temps really aren't that bad....as long as they're on an average and not much higher...if you're getting good smoke and it's not crying for fuel... You should be good
 

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