ELIMINATE Exhaust Drone with math - Helmholtz Resonator Calculator

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How to hypothetically eliminate exhaust drone with a quarter wave resonator or a Helmholtz resonator. Links to calculators, how to use them, their limitations, possible problems and links to resonator information
Full ARTICLE & Resonator Calculators - strikeengine.com/helmholtz-re...
Active silencers AliExpress - s.click.aliexpress.com/e/_DDk...
Exhaust Valve - s.click.aliexpress.com/e/_DDG...
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Time Stamps
0:00 Intro
0:20 My exhaust drone problem
0:45 Valved exhausts
1:30 Helmholtz & 1/4 wave resonators
strikeengine.com/helmholtz-re...
2:02 Quarter wave resonator
2:48 Spectrum analyser
3:43 Sources & Links
4:35 Quarter wave summary
5:04 Helmholtz resonator
6:00 Potential issue
7:14 Links and sources
7:41 Summary
8:05 Please like & subscribe!
#helmholtz #resonator #exhaustdrone

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Опубликовано:

5 июл 2024

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Комментарии : 4

@Errol.C-nz 8 месяцев назад

Make a trombone like slide pipe to tune the resonator.. don't make a link pipe rather connect a bend to the end of the resonator pipe.. the resonator pipe connection/junction want to be the same dia as the exhaust pipe.. it creates a pressure drop negative pulse that can halve the positive pressure wave traveling on to the tail pipe.. the resonator end creates a reversed pulse back to the junction.. somewhat half way between the pulse that created it.. & the next pulse travelling to the tail pipe.. BUT.. the key in tuning it.. is a critical magic point at which negative waves bouncing back from the resonator to the exhaust.. help suck/neutralise part of the next pressure wave upstream from the junction.. make a trombone joint by taping sellotape to the resonator pipe & sealing the slide pipe with vht gasket goo.. the tape will burn off in the first run the the sealer will be able to slip but still have a good pressure seal.. ANY leak will interfere with the pressure/vacuum pulses & the tune.

@FiveBoroNative 7 месяцев назад

Great stuff...! I have no on-hand experience with J-pipes (a.k.a. 1/4 wave resonators), but Helmholtz resonators have served me well...! I've seen 1/4 wave resonators work well on exhaust systems, but Helmholtz style resonators do seem to cover a wider range of frequencies and they offer greater damping and frequency attenuation....

@DriveTuneMedia 7 месяцев назад

Phase is an issue with Helmholtz? eg it needs to be worried about?

@FiveBoroNative 7 месяцев назад

@@DriveTuneMedia no. Helmholtz-style resonators aren't concerned with that because they work differently from J-pipes (1/4 wave resonators).