DIY Knock ears

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DIY Knock ears

Postby immortality » Mon Nov 16, 2020 8:14 pm

Thinking it's time I step and get a set of knock ears.

What are people using for DIY knock ears?

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Re: DIY Knock ears

Postby Chuff » Mon Nov 16, 2020 11:19 pm

This is mine:

viewtopic.php?t=4308&p=59589#p59589

The link is no longer valid but I created a PDF of it back in the day.

KnockEars.pdf
(1004.9 KiB) Downloaded 33 times


Works a treat. Easy & cheap to make.

Hope that helps.

Chuff
˙ʎɐqǝ ɟɟo pɹɐoqʎǝʞ ǝsǝuıɥɔ ɐ ƃuıʎnq ɹoɟ ʇɥƃıɹ ǝɯ sǝʌɹǝs

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Re: DIY Knock ears

Postby Charlescrown » Tue Nov 17, 2020 9:01 am

I'll definitely make one of those. Thanks for posting.

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Re: DIY Knock ears

Postby delcowizzid » Tue Nov 17, 2020 6:26 pm

https://www.ebay.com/itm/Personal-TV-So ... Sw-mda-Sdy
Something like this personal amplifier run some shielded wire from the mic terminals to a 2 pin knock sensor
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: DIY Knock ears

Postby j_ds_au » Thu Nov 19, 2020 11:02 pm

Chuff wrote:This is mine:

viewtopic.php?t=4308&p=59589#p59589

The link is no longer valid but I created a PDF of it back in the day.

KnockEars.pdf


Works a treat. Easy & cheap to make.

Hope that helps.

Chuff

Thanks, Chuff.

To assist in reading the article in full (since the PDF printout suffers from page clipping on the right side), you can also view the original article via the Internet Archive :
http://web.archive.org/web/201704210209 ... -II&A=1353

Joe.

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Re: DIY Knock ears

Postby Charlescrown » Sat Nov 21, 2020 3:49 pm

Anyone thinking of making one and shop at Jaycar be quick as the transducer is now not being restocked and some stores are sold out. They work a treat.

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Re: DIY Knock ears

Postby vlad01 » Sat Nov 21, 2020 6:45 pm

I used the professional "knock box" and these sensors.

https://www.ebay.com.au/itm/Knock-Senso ... 1438.l2649

I permanently mounted the sensors on my block, had the machine shop drill and tap the lugs on the block while they were doing the machining so I could chuck two sensors on it.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

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Re: DIY Knock ears

Postby Charlescrown » Sun Nov 22, 2020 6:54 am

That's probably a much better sensor to use because your not hearing all the other engine noises as well.

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Re: DIY Knock ears

Postby immortality » Sun Nov 22, 2020 10:35 am

I've got one of those bolt on knock sensor too. Just need to get the other few bits.

I was hoping Festy was going to make more of his little knock boxes but it was not to be.

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