BF Mods by Custom-Classic
- Thread starter custom-classic
- Start date
- th_trl_thread_readers 0
- Status
How do you get that small black spot off!!
I've tried everything by hand short off a drill and a polishing wheel. The pin was mirror but the spot stays!! [emoji35]
I've tried everything by hand short off a drill and a polishing wheel. The pin was mirror but the spot stays!! [emoji35]
It's aesthetic only.
How do you get that small black spot off!!
I've tried everything by hand short off a drill and a polishing wheel. The pin was mirror but the spot stays!! [emoji35]
I use a 5000 grit automotive sanding pad, it quickly removes the spot and leaves a nice shiny surface. You can follow that with a polishing compound to get a mirror like contact.
I've used polishing compunds it gets me the mirror finish but the spot stays
.I'm afraid to use sanding paper as not to lose the shine and make it brushed. Not sure I have 5000 I might have 3000 as highest.
Thanks.
EDIT: Is this avoidable in any way? I'm at 0.30-0.33 ohms on a daily basis.
I am right around .3 and i have not been able to keep that damn spot out either. I have been applying a tiny dab of no-ox id on the positive were the spot would appear. I still get it after a few days.
Like b2L i use a abrasive foam sheet by 3m. Not sure of the grit...its model p3000 so possibly 3000? Since its foam it gives to the shape of the contact and no need to press super hard. After that I buff on a heavy paper stock with some "tooth" to it. Im my case i use a door hanger from my bosses business. It has a bit more tooth than a note card.
At this point you can do your mirror polish. During battery changes you can give a few swipes on your paper material and that may help keep the black away for a bit longer....but in my experience it is inevitable.
Now I hope someone chimes in with the cure!
I will also add that I have heavy pitting on my batteries used on the CCs. Not sure if its a no-ox-id thing, button masher thing, or just normal....
Like b2L i use a abrasive foam sheet by 3m. Not sure of the grit...its model p3000 so possibly 3000? Since its foam it gives to the shape of the contact and no need to press super hard. After that I buff on a heavy paper stock with some "tooth" to it. Im my case i use a door hanger from my bosses business. It has a bit more tooth than a note card.
At this point you can do your mirror polish. During battery changes you can give a few swipes on your paper material and that may help keep the black away for a bit longer....but in my experience it is inevitable.
Now I hope someone chimes in with the cure!
I will also add that I have heavy pitting on my batteries used on the CCs. Not sure if its a no-ox-id thing, button masher thing, or just normal....
Nice work, buddy! Glad you got it installed and working.
Great pichers, too.
B is correct,... aesthetics.
On the little black spot on the contact, there is anecdotal evidence out there that suggests that the positive and negative contact, both being the same material (silver), reduces such things. I'm last on the silver contact list, so I haven't got a chance to test that theory, myself... I still have brass negatives in both of mine....
It would be ideal if the battery positive and negative were silver, as well. I don't see any battery manufacturers ever doing that, unfortunately....
But, yes,... 3-5k grit sandpaper, polishing wheel on a dremmel/drill, if you have it, would be a nice touch, though not necessary... followed by deoxit, no-ox-id, or similar, will slow it down. Giving your batteries the same treatment will help, also.
At .5ohms, it's hasn't been much of an issue for me, but I know that down below that, it happens more quickly. I sometimes go a couple months before doing any contact maintenance on mine. I don't notice any real change in performance, with or without the little black spot, but at lower ohms, I would imagine it might be something you'd wanna tend to more often....
At .3, I noticed it a lot and the black spot would definitely hamper performance - but even up at .4 I notice less maintenance/less issue from the black spot. Up around .6/.8 it's almost a non-issue completely. I'm at .4 these days and I haven't sanded my contacts in 2 weeks or so but I do wipe them with a tissue each battery change just to help keep it at bay.
That's about where I'm at as well. Around 0.5R, the spot shows up, but doesn't seem to get too bad too quickly. I use the red Deoxit on both +/- and it seems to slow it's growth a bit, but I haven't ever really gotten it to totally disappear.
When I clean it off, I've only been using a super super fine Emery stick that I got from one of the Peko parts vendors. Surface gets shiny, but there is a "stain" where the spot was. I guess sanding away would get rid of it, but it seems to work fine regardless.
Fortune favors the Bottom Feeders.
You golf?I grew up in Bethpage, haven't been back since '88. I really should get up there again one day.
Glad you enjoyed the show, would have loved to see Primus
I've thought about leaving. Business really wouldn't allow that. Between the ridiculous taxes, cost of living, traffic, meatheads, pretentious DB's "born on 3rd base acting like they hit a "triple"...it wears on you.
There's a bunch of reasons to leave. Just as many to stay though. Beaches, top ranked beach in the country actually. Fishing. Proximity to Queens, Brooklyn, Manhattan. Upstate isn't far to visit Sloth country. The north fork wine country. Hamptons and Montauk. Pizza, bagels, EGG Sandwiches. You can get the most authentic whatever type food there is somewhere within an hour's drive.
Sorry Corey...blabbing so much off topic..
Like Corey said. Dremel if you have one and deoxit. That's kept my black spot away long enough. Initially I was having issues using that other stuff, noalux? Misfires and what not. Occasional "monthly" dremel with the "fine" spongey dremel wheel and immediate deoxit touching up every few days and it's a non issue at this point
I don't particularly care for noalox, either. I much prefer deoxit and/or no-ox-id.
And, please feel free to talk about anything you like, here. I don't always have a lot of time to engage in off topic discussion, but I do enjoy reading it, when I get the chance.
Right now I'm emailing folks, back and forth, tryin' to get this week's run all finalized. And, of course, doing shipping labels...
I gotta get started on the silver contacts for this week, pretty soon.....
And, please feel free to talk about anything you like, here. I don't always have a lot of time to engage in off topic discussion, but I do enjoy reading it, when I get the chance.
Right now I'm emailing folks, back and forth, tryin' to get this week's run all finalized. And, of course, doing shipping labels...
I gotta get started on the silver contacts for this week, pretty soon.....
If I may make a suggestion.
When "sanding" your contacts clean don't attempt to restore their original convex shape.
Allow them to flatten out a bit across your mark so they make contact over a larger area.
Over time this should make for a larger contact patch for current flow and somewhat alleviate the issue resulting in less maintenance needed.
Tapatyped
When "sanding" your contacts clean don't attempt to restore their original convex shape.
Allow them to flatten out a bit across your mark so they make contact over a larger area.
Over time this should make for a larger contact patch for current flow and somewhat alleviate the issue resulting in less maintenance needed.
Tapatyped
Or do what Rossum (I think it was him. My mind is getting old these days) does: simichrome polish seems to work ridiculously well
I run mine at 0.4 ohms. When I first got my cc, I didn't do anything aside from applying deoxit gold. 1 month of daily use there was a fat black spot and it fired inconsistently.
Since then, I'll been using a 5000 grit sandpaper to polish the dark spot away completely, then apply a solid dose of no-ox-Id every 2 weeks. Been firing like a champ.
I actually much prefer no-ox-Id. It's more viscous and substantial, and stays on the contact better. Keeps it tarnish free longer too. With deoxit gold, it applies in really thin and wears out quickly. Just IMO.
I would use simichrome if not for the fact that I'm stuck in Singapore, and it costs me 50 bucks to get it mailed to me
Sent from my iPhone using Tapatalk
I run mine at 0.4 ohms. When I first got my cc, I didn't do anything aside from applying deoxit gold. 1 month of daily use there was a fat black spot and it fired inconsistently.
Since then, I'll been using a 5000 grit sandpaper to polish the dark spot away completely, then apply a solid dose of no-ox-Id every 2 weeks. Been firing like a champ.
I actually much prefer no-ox-Id. It's more viscous and substantial, and stays on the contact better. Keeps it tarnish free longer too. With deoxit gold, it applies in really thin and wears out quickly. Just IMO.
I would use simichrome if not for the fact that I'm stuck in Singapore, and it costs me 50 bucks to get it mailed to me
Sent from my iPhone using Tapatalk
Damn fine suggestion, Beck. Damn fine.
Sent from my SM-N920V using Tapatalk
Tracking number sent!
Good stuff, Kiwi!
- Status
