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Knock-link facelift - tastic!

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Old 09 May 2004, 11:45 PM
  #32  
Edcase
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its the two airvents and the hazard warning light that comes out. You need to pop open the cup holder, unscrew that, and then I think it should come out. Its been so long I cant remember. That piece is definitely one whole section though
Old 10 May 2004, 09:25 AM
  #33  
pbee
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Midlife

I had my fascia off last weekend to line the stereo up better. you have a screw in the cup holder and that comes out. the whole fascia from the cup holder down then comes off in one piece (needs a gentel tug from the top). the part that edcase has used for mounting the leds is part of the airvents which just pop out once the fascia is out of the way.


cheers


Peter
Old 10 May 2004, 10:02 AM
  #34  
Soapy Sam
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For those who are idle like me you can simply remove the circuit board complete with LEDs and mount it with the LEDs on view:



No soldering and 10 mins to fit....
Old 22 August 2004, 09:44 PM
  #35  
highlander68k
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Fed up with the ugly looking thing too.

It would really make sense for Link to redesign the knocklink into something a bit more stylish.
Old 23 August 2004, 12:15 AM
  #36  
dij
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I have to agrea with highlander.

If it wasnt for the engines going bang,I wouldnt pay £10 for the (current) knock link.

Turbo Steve,YHPM......you clever git
Old 23 August 2004, 10:25 PM
  #37  
SimonH
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I know stuff all about electrics but still managed to desolder the LEDs and remount them in the A-pillar. Absolute doddle and looks good (IMHO!) Bits from Maplins again - just a few lengths of wire and some LED holders. Sweet

Pic:


78kb wmv file: "percussion testing" whilst under construction
http://www.hickey1.freeserve.co.uk/knocklink.WMV
Old 24 August 2004, 11:53 PM
  #38  
olliecampbell
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Wow looks good, what are those guages as well?
Old 25 August 2004, 04:47 PM
  #39  
Wrx Iom
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Smile Nice

SimonH

where did you get your A pillar pods from and your guages? They look sweeet!

Could a novice even attempt such an install such as yours?

Rgds


Wez
Old 25 August 2004, 05:13 PM
  #40  
SimonH
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The twin a-pillar pod is from JW racing - about £65 odd. Good quality item.
The upper gauge is just a Defi boost whilst the lower is Link digital lambda gauge from BRD.

The install is easily achievable by a novice. I can say that because I am one!
Old 25 August 2004, 07:58 PM
  #41  
CataIunya
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I can never get my kl to light like that what where you twatting your block with ?
Old 25 August 2004, 10:04 PM
  #42  
SimonH
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That's on max sens and lightly (honest!) tapping the mounting bolt for the sensor - don't worry, the sensor still works!! Was using the blunt end of a cold chisel......
Old 26 August 2004, 01:43 PM
  #43  
MBScooby
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Picture of my LED'S relocated, LambaLink on the left and Knocklink on the right

http://gallery93372.fotopic.net/p7038733.html
Old 08 September 2004, 12:40 PM
  #44  
Turbo_Steve
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Using unsheilded leads really isn't reccomended, especially if you replicate all the +ves to the LEDs, You only need one for all of them, and the IC in the knocklink is a sensitive soul...you really need to sheild the wires against noise if you get them past 20 or 30cms.
Old 08 September 2004, 02:59 PM
  #45  
Graz
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Originally Posted by Turbo_Steve
Using unsheilded leads really isn't reccomended, especially if you replicate all the +ves to the LEDs, You only need one for all of them, and the IC in the knocklink is a sensitive soul...you really need to sheild the wires against noise if you get them past 20 or 30cms.
Not so....

The only thing sensitive to noise is the signal wire from the knock sensor. That's why Link provide it with a shielded cable. Wires to the LEDs: provided you don't make them so long that voltage drop becomes a problem (i.e. 1m+ of thin wire) noise is not an issue. It's only an on/off signal (+5V/0V?) after all. They don't need to be shielded.
Old 08 September 2004, 03:52 PM
  #46  
petesmith
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Originally Posted by SimonH
The twin a-pillar pod is from JW racing - about £65 odd. Good quality item.
The upper gauge is just a Defi boost whilst the lower is Link digital lambda gauge from BRD.

The install is easily achievable by a novice. I can say that because I am one!
Have you got a web address for BRD.

Cheers
Old 08 September 2004, 04:55 PM
  #47  
Turbo_Steve
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Graz, that simply isn't true.

Have look at the PCB and you'll see the Knock sensor uses a common supply that is not decoupled from the LED supply in any way. Add to this that the LM359 variant used on the board is notoriously susceptible in noise (it's used extensively in various bit's of audio kit, and it's supply and it's reference have to be used thoughtfully to prevent crosstalk). Consider that a 0.5 volt voltage differential in the postive supply can adjust the Vref by upto 20%, and you start seeing that you could be getting red light flickers that are nothing to do with Knock.

The LEDS themselves aren't affected by the noise, but the wires you are attaching are big aerials back to the PCB. The main supply into the box has a lovely big surpressor on it....these LED leads have no such thing.

I would be the first to admit that noise induced in cables behind the dash is fairly unlikely unless you bundle them up in the wiring loom, but don't you just know that the improbable always happens?
Old 08 September 2004, 04:58 PM
  #48  
Turbo_Steve
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In fact, if you want an experiment, try putting your mobile phone on top of the knocklink and calling it (the phone, not the knocklink! "Here, little knocklink...here boy").

Phone will often make the knocklink flash like buggery. Now try it from further and further away. You might be surprised.
Old 10 September 2004, 09:45 AM
  #49  
Graz
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Okay I stand corrected Analogue / RF was never my thing anyway, I'll stick to software

So I'm going to be fitting my Knocklink at some point soon and would like to remote the LEDs. I guess the ideal solution would be to fit a driver IC of some description to the output of the LM359 (op-amp) to isolate it and prevent noise getting back in affecting the display.

I think I may try and reverse engineer it at the weekend (shouldn't be hard), I'm having ideas about microprocessors and LCD displays. Got Lambda Link as well, must have a look at that, it's only a blimmin digital volt meter after all

Graz
Old 11 September 2004, 05:22 PM
  #50  
Turbo_Steve
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I did try opto-isolating, which is a bit of a PITA. After a bit of experimentation, I came to the conclusion that an earthed sheilded cable seems to be adequate up to about 2 metres, before you start picking up "other stuff" and throwing the voltage Ref. It isn't a hugely big deal, but you do notice that if someone in the car is on their mobile, you can get red lights when you'd normally only get a couple of greens! Surprised the heck out of me the first time that happened!

I'm not very well "up" on RF stuff either, tbh mate, it's been a process of trial and error.
What I have seen is plenty of Knocklinks that have not had adequate support for the LEDs and have lost one or two after a while......let's hope it's not the red

I just wish Defi made something cool for Knock / AFRs

If you fancy a trip over to Coventry this weekend, I am doing a few Knocklinks, and could do with some interested company
Old 12 September 2004, 12:53 AM
  #51  
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A nice digital meter would look great, sounds like a good little money maker guys
Old 13 September 2004, 10:59 AM
  #52  
Turbo_Steve
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Define "digital meter"?
Old 13 September 2004, 02:11 PM
  #53  
olliecampbell
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Ok probably not the correct terminology for it, but something like the rpm/speed display on a stacked dash.
Old 13 September 2004, 02:18 PM
  #54  
Turbo_Steve
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Sounds like the right description to me! Was just curious about what you meant.
Only problem is...what would you measure knock in? dB? Number of Detonations counted? Interesting idea............
Old 16 September 2004, 05:10 AM
  #55  
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As I'm a bit cack handed with the old soldering iron's I just took the outer case off mine, used it as a template and drilled as few holes in my clock surround.

20 min job tops.





Anyone else doen it?
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