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> Rebuilding the FI relay board.
Air_Cooled_Nut
post Sep 15 2003, 04:22 PM
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914 Ronin - 914 owner who lost his 914club.com
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My soldering skills leave something to be desired and the space in which to perform the soldering is rather tight but I was able to do it...I think...at least it looked okay and felt solid. Here's a picture of before my soldering and after it was all coated:
(IMG:http://www.914world.com/bbs2/uploads/post-2-1063733351.jpg)

Mine showed only a couple cracks in the tar bottom and I'm sure I could've easily patched them but I wanted to see if recoating was easy. It is, just messy and I recommend wearing nitrile or latex gloves. The LET shrinks considerably. One container will be more than enough for two coats and left overs for later wiring projects. The 3M undercoating sprayed on easily and did not shrink. Several coats of that would probably be fine. I hesitated using RTV because I thought I read somewhere that it may be slightly acidic on some metals and I didn't want to risk having my copper strips and soldered joints disappearing on me one day while driving.

If anyone else has done this differently I would like to hear about it, be is successful or not. Mine was successful (short term at least (IMG:style_emoticons/default/wink.gif) ) as the car started right up and ran after installation. Will it last for the years to come? We'll certainly find out (IMG:style_emoticons/default/beerchug.gif)
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Air_Cooled_Nut
post Sep 15 2003, 10:31 PM
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914 Ronin - 914 owner who lost his 914club.com
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I have an old soldering pencil. Couldn't tell ya the wattage.

I put the point on the rivet but the copper and rivet just sucked the heat away and I couldn't get any solder to flow. Here's what I ended up doing...
- Put solder tip on rivet center.
- Form a puddle of solder on the rivet. Thanks to surface tension you can get a decent sized bead on it.
- Keep the solder tip in the solder bead so it will get nice and toasty.
- Stroke the solder bead away from the center of the rivet and to the edge of it where it meets the copper ribbon.
- Keep the solder tip in solder bead, again heating it, then remove the solder tip.
- The solder will flow into/around the rivet and on the copper ribbon.

The reason I used the center of the rivet is because there isn't much room for the soldering tip. On spaces where there is room you can puddle the solder on the edge of the rivet. Again, my solder joints didn't look pretty but this method seemed to hold. If there's an expert on this subject, please, speak up!!! I would hope there is a better/easier way.

If you keep typing "solder", after a while it really looks like a funny word and you have to check the dictionary just to make sure you're spelling it right (IMG:style_emoticons/default/blink.gif)
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Air_Cooled_Nut   Rebuilding the FI relay board.   Sep 15 2003, 04:22 PM
Air_Cooled_Nut   It's working for me...here's the URL I use...   Sep 15 2003, 04:38 PM
brant   Wow... looks great. does anybody know if common g...   Sep 15 2003, 05:07 PM
TonyAKAVW   Has anyone ever thought of building a modern versi...   Sep 15 2003, 06:15 PM
Aaron Cox   i potted mine with rtv silicone. good stuff.   Sep 15 2003, 09:48 PM
jkeyzer   I used Silicone Conformal Coating. It's very ...   Sep 15 2003, 09:53 PM
dan10101   We need to do one of these boards. At least that...   Sep 15 2003, 10:11 PM
Air_Cooled_Nut   I have an old soldering pencil. Couldn't tell...   Sep 15 2003, 10:31 PM
Korijo   I would like to have mine done like this... Where ...   Sep 15 2003, 10:56 PM
jkeyzer   A higher wattage iron with a decent tip helps a lo...   Sep 15 2003, 11:16 PM
ThinAir914   Where can one get Silicone Conformal Coating or LE...   Sep 15 2003, 11:29 PM
Air_Cooled_Nut   The chemicals are readily available at any decent ...   Sep 16 2003, 12:04 AM
dan10101   Thanks for the suggestions. I'll try again to...   Sep 16 2003, 12:10 AM
Korijo   So where would I go to have this done ??   Sep 16 2003, 12:56 AM
Air_Cooled_Nut   Do it yourself! ;)   Sep 16 2003, 10:51 AM
Brad Roberts   Thank for the thread Toby.. it will go into the cl...   Sep 16 2003, 11:27 AM
Air_Cooled_Nut   Here's the image as an attachment:   Sep 16 2003, 11:29 AM
seanery   Dude, Dave has ALS, I don't think he can do i...   Sep 16 2003, 01:27 PM
Air_Cooled_Nut   Sorry, didn't know and what is "ALS"? If nobo...   Sep 16 2003, 02:01 PM
seanery   it's commonly known as Lou Gherig's diseas...   Sep 16 2003, 02:02 PM
Air_Cooled_Nut   Ah...gotcha! Hey, my sister's name is Kor...   Sep 16 2003, 02:08 PM


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