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Tutorials & Guides • Re: Bacharach Sniffer- converting a 303, 302, or 301 to a 300 (Picture Heavy)

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So I wanted to come back on here and give a HUUUUUGE WARNING!
DANGER! DANGER! STAY AWAY! DON'T TRY!

All the above info is absolutely great and wonderful. EXCEPT...

DO NOT. IN ANY WAY. SHAPE. OR FORM. TRY THE ABOVE RECOMMEMDATIONS TO
"MAKE YOUR SNIFFER WORK".

After over $150 worth of multimeters. WEEEKS OF WORK The exact multimeter Ryan the Ghostbuster recommends. I am no closer to getting that damn needle to work. I have literally dropped $150, recieved the multimeters, only to chuck them ALL in the trash one hour after opening the package. My money LITERALLY lasts longer at the casino.

What Ryan doesn't mention is the needle from the multimeter is EXTREMELY fragile the second it leaves the multimeter case. I literally had one break, no joke, sitting on the desk doing nothing. Worst of all, there is no ryme or reason I see for them breaking. One minute they work, the next second they don't, and all you can do is chuck it in the trash. I wired them fine and are a tank IN the case. But not long out of the case the needle starts to jam and then dies. I have never in my life had a more difficult project.

I also have ordered SEVERAL of these meters some vintage old new stock, others newer discontinued stock, all exactly the same unit, same innards. Also other models were sent to me by accident. There is no just, dropping the needle in and bobs your uncle. They all have to be trimmed near the base to sit low enough to have the needle slide over the backplate! Each short stub is 1 - 2 mills of hard metal. Only millimeters next to the needle mechanism. The needle mechanism that one particle of metal will kill. And the needle that LITERALLY bends at the weight of a feather. Yea. Dremel or snip the metal near that (snipping requires 2 hands). He said he used epoxy, and mentions nothing about cutting metal. Now if you use epoxy, that means its likely the needle is permanent so if it ever breaks you'd have to chuck out the sniffer gauge, not just the needle. And so far shelf life on needles is about 1 hour. Unless you fabricate something. And there is no mention of that either.

AND I HAVE ALL THE TOOLS TO DO THIS! I don't have a shop or anything, but I by means I have all soorts of quality stuff tonwork with.

I that don't know why he could not follow through and simply mention what kind of step up would work with the real Triplette meter, but becuase he didn't and this is a dead thread, I invested a RIDICULOUS amount of time and money to get NOWHERE.

You have been warned. THE. ONLY. WAY. TO. GET. THE NEEDLE. TO WORK. IS WITH A STEP UP. At least theoretically, since I lack the knowledge and skill to do so.

Do not bother using a multimeter. Don't try it. It is impossible. I have no idea how he was able to get one to work for him 1st try, but I have tried everything I could think of, and everytime the needle mechanism breaks everytime. Not to mention you have SO MANY sizing issues, logistic issues, and dremel issues. You do several hours of work, then chuck it in the trash. Start over. I am on Multimeters #5.

I am beyond frustrated. The key to any project is keep it simple. And instead of simply hooking up a step up to the original meter function as intended, he chose an ungodly task that makes juggling chainsaws on a unicycle on a ship during a hurricane look like childs play.

You have to gently disassemble everything. Cut the base of the needle, drill holes in magnets, drill holes in base, make custom threaded rods, cut magnets, sand the stuff, size it, make parts fit together, and keep it clean, from another magnet. If one particle of metal dust gets where it shouldn't, it breaks.

The needle itself is literally the sliver of a coke can. So one drop, or wrong move, LITERALLY A BREATH OF AIR, and the needle bends and breaks. The wiring, is cheapy chinese crap, so one wrong move, it shorts and breaks. The plastic of the meter, is thin vintage plastic. One wrong move it breaks. The screws, are tiny micro screws. One small misstep, they go missing, it breaks. They also can be stripped. You know how hard it is having small screws near large magnets? Yea. One wrong move, magnet pulls something it shouldn't, it breaks. Any of the above happens once. Start all over. Money and time gone.

EVEN... If you manage ALL THAT... And I did... Several times.
You pull out the multimeter needle, look at it wrong, it breaks. Chuck it in the trash. Start all over.

I don't care about battery life. If hooking a step up avoids ALL THIS HELL, its worth it. Too bad nobody on this thread left a clue how to do that.

100 years down the road, if anyone finally reads this thread again, please respond. I need to figure out the step up and I need the file for the meter. Just like this entire project, had someone simply uploaded the file, or given a picture without watermarks, it could of been simple. But no. In every part of the "make your sniffer work thread" there was a simple way of doing stuff, and a impossible way, and they smashed the impossible button everytime.

Not a happy camper. Please help

Statistics: Posted by Fang333333 — May 13th, 2024, 1:19 am



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