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Post by Deleted on Mar 5, 2014 3:05:30 GMT -5
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Post by newey on Mar 5, 2014 5:57:27 GMT -5
19mm vs. 18mm? I would think the difference of 1mm should be OK.
The thickness is 8mm, and the ones you have are 10mm to the knurled section, so apparently 2 mm for the nut to thread is sufficient. The Alpha one you linked to shows the knurled section to be only 1/4", which is roughly 6mm, so you still should have enough to thread the nut. Since the knob is a press-fit, you can make up the 1mm difference by not pressing it so far down onto the shaft.
As with anything else, check the seller's return policy so that you have an option if they don't fit. Also, recheck your measurements just to be sure, since you're dealing with a small difference, apparently.
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Post by Deleted on Mar 5, 2014 7:14:45 GMT -5
19mm vs. 18mm? I would think the difference of 1mm should be OK. The thickness is 8mm, and the ones you have are 10mm to the knurled section, so apparently 2 mm for the nut to thread is sufficient. The Alpha one you linked to shows the knurled section to be only 1/4", which is roughly 6mm, so you still should have enough to thread the nut. Since the knob is a press-fit, you can make up the 1mm difference by not pressing it so far down onto the shaft. As with anything else, check the seller's return policy so that you have an option if they don't fit. Also, recheck your measurements just to be sure, since you're dealing with a small difference, apparently. Thanx Newey for taking the time to help! I'd like to ask you about the first link here by "shaft" they mean including the split part or excluding from what you can tell. I could not imagine 100k pots are this rare! |
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Post by Deleted on Mar 5, 2014 13:25:42 GMT -5
Just measured this :
- full size , not mini
- resistance : 111 KOhm
- shaft diameter : 9mm
- threaded shaft part : 11mm
- split top part, where the knob mounts : 8mm
- total length from mount base plate to top : 11mm + 8mm = 19mm
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Post by haydukej on Mar 5, 2014 14:07:44 GMT -5
GD, I would imagine this diagram would probably be a "standard" way to measure dimensions of a pot.  The 15 or 18 mm shaft length you linked should* be from the pot's housing/base to the tip of the knurled shaft. Additional replies are appreciated to be kept PG-13. |
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Post by Deleted on Mar 5, 2014 14:42:31 GMT -5
Thanx Haydukej!
One thing that puzzles me, if your theory (and mine) is correct, is that if the length they advertise is 18mm and this is from the base to the tip, and if additionally this is the longest type of the two they provide, then 15mm (the shortest type) must be also from the plate to the tip, and i haven't found anything in the market *that* short.
But, your drawing was just really helpful! I can find many 100k pots of those dimensions from ebay. Thanx!
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Post by JohnH on Mar 5, 2014 15:18:51 GMT -5
Its looks like pots such as in the drawing above, with 9.5mm threaded length, would be just a bit too short for your 8mm top thickness, and a bit less than the current 11mm on the pot.
There's always the possibility, given the right tools, of carefully thinning the back of the cavity, but I wouldn't want to read the next thread asking about how to fix it when that goes wrong!
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Post by Deleted on Mar 5, 2014 15:36:13 GMT -5
Its looks like pots such as in the drawing above, with 9.5mm threaded length, would be just a bit too short for your 8mm top thickness, and a bit less than the current 11mm on the pot. There's always the possibility, given the right tools, of carefully thinning the back of the cavity, but I wouldn't want to read the next thread asking about how to fix it when that goes wrong! haha!! John, believe me, neither me!! i kind of had enough lately  anyways i got slight suspicions about my threaded part being a little shorter , will check again. Just measured again : the body thickness is at 7mm and the threaded part of the shaft at 10mm. I think i can handle 9.5 easily. Problem is where to find such pots? |
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Post by Deleted on Mar 6, 2014 9:34:25 GMT -5
pulled the trigger for those pots. we'll see in due time |
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Post by Deleted on Mar 17, 2014 16:27:31 GMT -5
just got them today, perfect fit, at least geometrically. Don't know how it sounds yet as i haven't installed them electronically. Thanx to all, Newey, Haydukej, John.
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Post by Deleted on Mar 18, 2014 7:43:10 GMT -5
measured the linear 100k pot and it reads 91K Ohm (9% tolerance). Would this be safe or should i send this back.
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Post by JohnH on Mar 18, 2014 14:29:00 GMT -5
measured the linear 100k pot and it reads 91K Ohm (9% tolerance). Would this be safe or should i send this back. Its only 9% low, so well within spec. It shouldn't make much difference anyway with active pickups. With 500k pickups, I had a whole set that were nearer 400k, still within spec. But I opened them up and scraped excess compound from the corner/edges of the tracks to ease up to 500k. |
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Post by Deleted on Mar 18, 2014 23:39:16 GMT -5
^^ nice trick, i was thinking about converting this into a no load pot, would it have any effect with actives ?
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Post by JohnH on Mar 19, 2014 0:34:49 GMT -5
^^ nice trick, i was thinking about converting this into a no load pot, would it have any effect with actives ? Not something to be done to a volume pot, but may do something if its a tone pot |
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Post by ashcatlt on Mar 19, 2014 12:43:22 GMT -5
^^ nice trick, i was thinking about converting this into a no load pot, would it have any effect with actives ? Like John said, a "No Load" V pot is a kill switch. I wouldn't expect No Load T to do much good on the "downstream" side of an active circuit. Wired like a normal T control on guitar, it actually will work completely differently from in a passive arrangement, and I just don't think you're gonna get much noticeable difference there. |
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Post by Deleted on Mar 20, 2014 3:17:57 GMT -5
Thanx guys, i was talking about the tone pot anyway. Thing here is i just installed the new pots along with an new switch i had bought some time ago for another project, and also a new cap. The installation, was again a pain, as always. It must have taken me about 6-7 hours total since i started. I started replicating the new wiring outside the guitar, (outside pups/battery as well), and all connections seemed ok. But when i installed this, i got almost no volume. Disconnected everything and started from scratch tests. Then started gradually connecting things into place. I wonder why "never" have i been able to do it the easy way. Too much early morning waking up, late night work, really frustrating. Anyway, the thing worked, and now the pots work smooth. Also, since i dont like the clean sound of the bridge pup, (its awful) and the mod with taming its power didn't yeild nothing more but just reduced output, i am living this in this state. It will need some fretwork (by a pro), and that will be the end of its modding carreer (till i get the duncan blackouts that is ) |
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