Re: TA_C10: Stage 1
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So here is the first result from my app driving around before I put these resonators on. Then I used the resonator spreadsheet I found online(from Lawrence Tolman(LT) from his youtube channel, powernation trucktech guy).
I ran several tests and the average number was 116Hz. So I plugged that into the calc. My drone is around 1700 RPM mostly so I used the 35" number for length. I went exactly 35". . |
Re: TA_C10: Stage 1
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And here is the result, the best I could get it. It dropped from -15 to -20 db almost. So the drone is still there, but quieter. I was expecting it to be completely cancelled. If you guys have any suggestions let me know.
I lengthened the pipe with my clamps, playing with several different configurations. I also shortened the pipe by turning the 2" capped end's 180 degree and putting them in the clamps backwards. But that shorted it probably down to like 25-28" and if you look at the spreadsheet, longer should have worked better than shorter. Nothing worked except the original 35" I originally built them to, which the Hz is still the same pretty much, but the db's went down. I dunno..... . |
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Are you happy w/it as-is or are you going to keep @ it? |
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https://docs.google.com/spreadsheets...gid=1183590515 . |
Re: TA_C10: Stage 1
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My thought is still make the 'T' into the main exhaust lines. Weld a 90° turn on the 'T'. Make a short (~3"L) 'end piece'. Use the wrap-around style exhaust clamps (2x clamps @ each assembly so 4x total) to secure varying lengths of pipe between the 90° & the end piece. What size tubing did you wind up using? |
Re: TA_C10: Stage 1
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This might hide the drone?
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Seriously though,i wonder if distance from the motor is an issue? Or if they need to be after the flowmasters to cancel their noise?
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Yeah I will probably cut it down again too 10" or so and with my 3" adjustability try that new length from the second spreadsheet I found. |
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