lapidarycentral
starting to spend too much on rocks
(Brian Rhode) LapidaryCentral.com - Fueling your Lapidary Addiction.
Member since August 2021
Posts: 209
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Post by lapidarycentral on Jun 28, 2023 12:13:24 GMT -5
Hey Folks, Recently picked up a used and not working fl-15 lortone vibralap. It had been modified with a counterweight that looked too heavy for the motor, and appears to have potentially damaged the motor according to the old owners.
I am looking for both the replacement motor and a replacement counterweight. Was hoping someone might have an old husk they might be willing to disassemble and sell me the parts from, or perhaps someone had some ideas that would work.
Also potentially looking for an extra pan if someone has one they'd sell.
I saw the prior threads about the Dayton Grainger motors, but they are saying discontinued and no longer sold.
Any help would be greatly appreciated!
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Jun 28, 2023 22:24:00 GMT -5
Do some motor performance comparison shopping on the Grainger website. It seems a very minor change to a motor results in a new part number and the old one goes obsolete. An interchange might be there.
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lapidarycentral
starting to spend too much on rocks
(Brian Rhode) LapidaryCentral.com - Fueling your Lapidary Addiction.
Member since August 2021
Posts: 209
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Post by lapidarycentral on Jun 29, 2023 19:19:09 GMT -5
It sounded like the factory making them shut down and they no longer sell motors that size range or with that mount.
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herb
spending too much on rocks
Member since November 2011
Posts: 445
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Post by herb on Jul 1, 2023 14:21:22 GMT -5
It sounded like the factory making them shut down and they no longer sell motors that size range or with that mount. Not sure if your FL15 is like mine, but this thread from 2020 details some of my attempts to fix my FL15: forum.rocktumblinghobby.com/thread/91950/replacement-bearing-lortone-vibratory-flatThat thread also has a diagram that shows the parts, if yours is like that one, then I read somewhere that the motor was custom made for Lortone so you won't find a direct replacement. Assuming your model is like the diagram, the first thing I would check is the bearing that is inside the flange that is mounted above the motor itself. Can you wiggle the motor shaft back and forth with your hand? That turned out to be my main issue. I ended up destroying the original motor when I opened it up. I don't remember the particulars. I think there was a bearing on the bottom of the motor shaft inside the housing and some spacers. When I tried to pull that off to replace it (without a bearing puller), I ended up moving the rotor on the shaft and also the fan assembly. Long story short, I couldn't get everything back lined up properly so that the shaft would turn well when the motor case was put back on. I consider it a learning experience! Good news is I took that experience to be able to replace the bearings inside my Beacon Star flat lap motor! The replacement motor I ended up getting ran really hot. I got the same model Grainger had somewhere else to save a few bucks. I don't know if the motor I got was a 2nd or dud or whatever, but I probably should have stuck with Grainger. I ended up mounting a computer box fan I had lying around to the flat lap side and that keeps the motor reasonably cool. The counter weight I have is 3 5/8 inches long by 1 inch wide, by 1/4 thick As for pans, Rick Scott still had some 4+ years ago when I called looking for a 10 inch pan (he doesn't have those). I don't know if he still has any. If you are looking to replace your pan because it is dished, a small machine shop would be able to grind it flat for you again. Have to find a small shop though, the bigger shops wanted 200 to 300 because it isn't worth their time. I had a place do it for $50, which isn't bad because the new ones go for 125 or more if you can find them.
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