GavinL Posted January 26, 2002 Share Posted January 26, 2002 Taken from the 200 plus mailing list, anyone heard of these? Any good do we think?! They look like a sequential shift but measure detonation. It`s got 1 red LED 2 yellows and 2 greens all housed in a small brushed chrome bezzel (about 5cm long by 1cm tall). It has a 12V pos and neg hook up and bolts directly to the block via any vacant bolt hole (loads on a T16) They have been proven to be nearly as acurate as a guy with a stethascope sitting in your passenger seat (side by side tested) Cost is about £160 inc vat. Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 26, 2002 Share Posted January 26, 2002 This sounds like exactly what I've been after, except I was imagining something plugging directly into the stock knock sensors. I've spoken to a couple of the more electronically minded bods off-list, and it seems that the electronics involved would be too costly for a one-off, so I'm interested in this self-contained package. Any more details on it? Manufacturer? Vendor? Magazine reviews? Anyone actually got one? -Ian Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted January 27, 2002 Share Posted January 27, 2002 Sounds like one of those things that we should all have. Or wish we had, after the event... Quote Link to comment Share on other sites More sharing options...
Phil Wall Posted January 27, 2002 Share Posted January 27, 2002 Certianly an item to add to the list! Quote Link to comment Share on other sites More sharing options...
GavinL Posted January 27, 2002 Author Share Posted January 27, 2002 Quote: from Ian C on 9:56 pm on Jan. 26, 2002[br]This sounds like exactly what I've been after, except I was imagining something plugging directly into the stock knock sensors. I've spoken to a couple of the more electronically minded bods off-list, and it seems that the electronics involved would be too costly for a one-off, so I'm interested in this self-contained package. Any more details on it? Manufacturer? Vendor? Magazine reviews? Anyone actually got one? -Ian I have asked for more info on this one. It appears that they are made by an individual not a mainstream company, I should be able to get a piccy shortly. regards Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 27, 2002 Share Posted January 27, 2002 Cool. I'll be waiting, anticipating... Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted January 27, 2002 Share Posted January 27, 2002 Quote: from Ian C on 10:37 pm on Jan. 27, 2002[br]I'll be waiting, anticipating... Aren't they words from a song? Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 27, 2002 Share Posted January 27, 2002 It's paraphrased from one, the actual line is "We'll be waiting, summer pagan, for a time when no-one's cheating" (hey, who said songs have to make sense!!) Free small black vacuum pipe from my old engine to anyone who can name that tune... -Ian (Edited by Ian C at 11:15 pm on Jan. 27, 2002) Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted January 27, 2002 Share Posted January 27, 2002 Errr... Now I'm confused... I thought it was an 80's song... I can feel a bad night coming on! Quote Link to comment Share on other sites More sharing options...
GavinL Posted January 28, 2002 Author Share Posted January 28, 2002 Hi.... I have received this from 200 plus group's Jason: I`ve seen one in the flesh and they do work. The only test that I know was worthwhile was an experianced engine tuner sat in the passenger seat with a stethascope listening for knock. He was blind folded so he couldn`t see the LCD display. Each time he heard det he called out. EVERY time he called out the LCD display was registering the det too. I know that they use a Bosch knock sensors. Feel free to send me a list of your questions. Any questions send them too me ([email protected])and I will pass them on. regards....... Quote Link to comment Share on other sites More sharing options...
THOR Racing Posted January 30, 2002 Share Posted January 30, 2002 have you a link to this product? Knock sensors can be classified in two broad categories: direct and remote measurements. They detect shock waves, a characteristic frequency in the engine, which are typically in the 5 kHz–7 kHz range. Direct Measurements Pressure sensors measure the pressure inside the combustion chamber of a running engine. Currently (that I know of), Toyota is the only manufacturer that installs pressure sensors in production engines. Remote Measurements Remote measurement sensors use vibrations transmitted through the structure of the engine to detect knock in the combustion chamber. Two types of remote sensor are being used today: tuned (sepecific to that engine) and broadband (generic across engines). So.... What method of signal conditioning and detection does this unit employ? Does it work for wideband remote sensors (the worst of the lot), is it a tuned analogue filter or digital filter? Does it use digital spectral analysis to determine knock? Is the detector limited over a certain RPM range. (The higher the RPM the more noise in the engine thus the lower the signal-to-noise ratio and thus the harder it is to detect properly? .......a few to be getting on with :-) ....... Pete Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 30, 2002 Share Posted January 30, 2002 I'm going to get one - I think it will be useful as an early warning device, and I'm under no impression that it's accurate enough for any tuning purposes. If you want a look at it once I've got it you can. I'll be evaluating it for the benefits of the BBS as well -Ian Quote Link to comment Share on other sites More sharing options...
matt Posted December 9, 2002 Share Posted December 9, 2002 Did you get one? Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 10, 2002 Share Posted December 10, 2002 Gavin, Jason has been trying to sell these for a while now. They sound a great idea but I am sceptical. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 10, 2002 Share Posted December 10, 2002 Yeah, I got one Wanna buy it off me? Quote Link to comment Share on other sites More sharing options...
GavinL Posted December 10, 2002 Author Share Posted December 10, 2002 Originally posted by Terry S Gavin, Jason has been trying to sell these for a while now. They sound a great idea but I am sceptical. I didn't look into them, Leon said not too bother. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted December 10, 2002 Share Posted December 10, 2002 Sounds like a good tool then It'll be keeping Jason in beer money... Gaz. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 10, 2002 Share Posted December 10, 2002 Guys I'd have to say that Jason is a great guy & a great source of cheap bits inc. Samco hoses. I spoke to Jason about these earlier in the year, but wanted to see some proven results. He may have them now. Ian, see how you get on & if possible let Pete look it over. It could be the mutts nuts. Also if you get a chance, bolt Alex into the passengers seat with a stethoscope & test it. Quote Link to comment Share on other sites More sharing options...
Digsy Posted December 10, 2002 Share Posted December 10, 2002 Originally posted by TRL Performance Remote Measurements Remote measurement sensors use vibrations transmitted through the structure of the engine to detect knock in the combustion chamber. Two types of remote sensor are being used today: tuned (sepecific to that engine) and broadband (generic across engines). I know that the remote sensing type can be very hard to set up because the way that shocks are transmitted to the sensor depends upon the cylinder block structure, so the idea of putting one on "any vacant hole" sounds a bit dubious. A straight display taken off the stock det sensor sounds like the best idea to me. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 10, 2002 Share Posted December 10, 2002 I gave it to Alex to take to Pete. Pete looked over it. That's why it's never been installed. 'nuff said, I think. The instructions were frankly rubbish as well, no wiring diagram which is a bit of a hurdle when you have four anonymour wires to plumb in. And how do you test the install? Make the engine knock? No thanks. So if anyone actually wants one to look at or to test or whatever, they can have my never-installed one. Cost me £160, sob, you can have it for a fraction of that because I'm never going to use it. Make me a ridiculous offer and it's yours. Just to clarify - Jason didn't make them, he just sold them. No disrespect aimed at him (I got a mega cool sticker off him just recently so I still do business with him - don't worry Terry, it's not stuck on the outside of the car) -Ian Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted December 10, 2002 Share Posted December 10, 2002 Originally posted by Terry S Guys I'd have to say that Jason is a great guy & a great source of cheap bits inc. Samco hoses. I spoke to Jason about these earlier in the year, but wanted to see some proven results. He may have them now. Ian, see how you get on & if possible let Pete look it over. It could be the mutts nuts. Also if you get a chance, bolt Alex into the passengers seat with a stethoscope & test it. Jason has also supplied loads of stuff for me previously. He has some character to him Bolt Alex into the passenger seat - lmao! Is Alex available for local hardware shops or is it a special order item? Gaz. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 10, 2002 Share Posted December 10, 2002 Sorry to hear that Ian. I was really hoping it would work. Darren's idea of taking a display off the stock knock sensor sound like an excellent idea. Pete?? Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 10, 2002 Share Posted December 10, 2002 Well, such is life. You can't win 'em all, and if I save other people from parting with cash on what just ain't worth it, then some good has come from the experience! For my next trick, I will bolt Alex into the passenger seat with a stethescope - rather than a spanner... I think I've figured out why you took so long to put your car together, Terry -Ian Quote Link to comment Share on other sites More sharing options...
Alex Posted December 10, 2002 Share Posted December 10, 2002 Thought I'd better change my caption to suite....sometimes I think you take me for granted Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted December 10, 2002 Share Posted December 10, 2002 Originally posted by Terry S Darren's idea of taking a display off the stock knock sensor sound like an excellent idea. Pete?? Can't the Techtom unit already display this ? Quote Link to comment Share on other sites More sharing options...
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