hillybilly DIY autotricks: knock detection

veecee · Post by **veecee** » Fri Mar 27, 2009 9:10 pm

hey guys,

i've heard about detonation cans a lot lately...

so i started searching.

two common cheap DIY methods have sprung up.

one is the copper pipe bolted to the block, with a flexible plastic hose run all the way to a set of ear-muffs. the ear protectors found at shooting ranges.

the other is electronic. a knock sensor is basically a microphone right? so how can you control the signal and have it play through earphones??? here's how:

http://autospeed.com/cms/article.html?&A=0353

opinions?

Riekert · Post by **Riekert** » Fri Mar 27, 2009 10:15 pm

mmm... seems easy enough to build....

veecee · Post by **veecee** » Sat Mar 28, 2009 6:28 am

the copper tube method!

http://turbod16.com/viewtopic.php?f=12& ... it=det+can

i also knew a mechanic once who used an automotive stethoscope a lot. looked just like the doctors ones, except there was a long metal pointer instead of a cup and diaphragm design!