Dutchman
04-15-2011, 02:01 AM
My Lyman 2500 tumbler has been sitting idle for over 2 years after the motor went kaput. Seeing that it had only about 1 year of active use I was determined that neither Lyman nor Midway was getting any more $$$ from me for another tumbler.
I dissected the Lyman 2500 using a rotary tool to remove the inner chamber as the motor is pretty much sealed inside the base. Lyman doesn't want you (or me) fixing a tumbler. They want you to $$$$ a new one.
I started researching the motor. What I found wasn't encouraging as far as what was available.
http://images58.fotki.com/v506/photos/4/28344/9665778/DSCF3194z-vi.jpg
The education came from Grainger. The Lyman motor has a 4 screw mount. Most of the Dayton motors are 2 screw mount and were no more powerful than the Lyman. I wanted something ~more~ so it wouldn't poop out prematurely.
http://www.grainger.com/Grainger/c-frame-motors/hvac-motors/motors/ecatalog/N-9y3?op=search&sst=subset
I found what I wanted in the Dayton 5M065 motor. It was 1/40th h.p., 3.98 peak amps, ball bearing, thermally protected. It was much beefier than the whimpy Lyman motor. The only problem was it cost $65.
http://www.grainger.com/Grainger/DAYTON-CFrame-Motor-5M065
Fast forward to last week. In my constant prowling on ebay I punched in "Dayton 5M065". I hadn't done this for quite while. BINGO! Found a fellow who had TWO new Dayton 5M065 for a starting bid of $20 + $10 shipping. By this time I was having a racing heartbeat as I envisioned my poor Lyman 2500 once again churning dirty empty cases like a tornado. The 2500 is quite a powerful vibratory tumbler, all things considered. It will scoot around when empty as the vibratory action is potent.
I scored the two new Dayton 5M065 motors for $30 delivered. They arrived yesterday. The bolt pattern is an industry standard so it was the same on the two motors.
http://images58.fotki.com/v510/photos/4/28344/9665778/DSCF3192z-vi.jpg
Seemed to be a rivet holding the eccentric weight on the Lyman shaft so I used the Black & Decker rotary tool ($30 at Amazon and very nice!) and a 1.5" cut-off wheel to remove it so I could get to the fan.
http://images51.fotki.com/v751/photos/4/28344/9665778/DSCF3193z-vi.jpg
This is looking up inside the base of the Lyman 2500 with the inner chamber removed via 25,000 rpm and a cut-off wheel.
http://images58.fotki.com/v511/photos/4/28344/9665778/DSCF3198z-vi.jpg
The longer of the two shafts is 5/16" diameter, same as the Lyman so the Lyman fan fit right on the Dayton shaft. The fan is a friction fit so there's nothing to do but push it on. The shaft has a flat for setscrews to tighten down.
The weight was lathe turned from a piece of large threaded scrap. I guessed on the offset and thickness. It turned out to be too heavy. The Lyman eccentric weight was 1.8 oz.
http://images56.fotki.com/v124/photos/4/28344/9665778/DSCF3213tm-vi.jpg
This is what I ended up with at 2.5 oz. The heavier weight was too much for the motor. However, this thinned weight was perfectomundo. There are two 10-32 setscrews holding the weight to the shaft. One short setscrew locking the longer setscrew.
http://images17.fotki.com/v4/photos/4/28344/9665778/DSCF3225tm-vi.jpg
I had to get some 6-32 all-thread to hang the motor underneath. I left the shorter 2nd shaft on the Dayton motor so I needed to hang the motor a bit lower inside the base.
http://images116.fotki.com/v107/photos/4/28344/9665778/DSCF3226tm-vi.jpg
The studs were cut off flush with the top of the nuts.
http://images17.fotki.com/v4/photos/4/28344/9665778/DSCF3230tm-vi.jpg
The test run proved that the Dayton motor was a perfect match for the Lyman 2500. It was very robust in the tumbling action. The motor is 200 rpm faster and the weight is a wee bit heavier so it'll churn up some serious action now.
As I recall Lyman claims 1,000 .38 Special or 300 .30-06.
I took the original Lyman motor apart to see if I could determine why it went belly up. It was one of the bearings. Not completely seized but it turned very hard. The other one was loose and free. I'm not sure yet if I'll try and replace the bearings to repair the motor since I have one spare new Dayton 5M065.
http://images53.fotki.com/v138/photos/4/28344/9665778/DSCF3234tm-vi.jpg
Dutch
I dissected the Lyman 2500 using a rotary tool to remove the inner chamber as the motor is pretty much sealed inside the base. Lyman doesn't want you (or me) fixing a tumbler. They want you to $$$$ a new one.
I started researching the motor. What I found wasn't encouraging as far as what was available.
http://images58.fotki.com/v506/photos/4/28344/9665778/DSCF3194z-vi.jpg
The education came from Grainger. The Lyman motor has a 4 screw mount. Most of the Dayton motors are 2 screw mount and were no more powerful than the Lyman. I wanted something ~more~ so it wouldn't poop out prematurely.
http://www.grainger.com/Grainger/c-frame-motors/hvac-motors/motors/ecatalog/N-9y3?op=search&sst=subset
I found what I wanted in the Dayton 5M065 motor. It was 1/40th h.p., 3.98 peak amps, ball bearing, thermally protected. It was much beefier than the whimpy Lyman motor. The only problem was it cost $65.
http://www.grainger.com/Grainger/DAYTON-CFrame-Motor-5M065
Fast forward to last week. In my constant prowling on ebay I punched in "Dayton 5M065". I hadn't done this for quite while. BINGO! Found a fellow who had TWO new Dayton 5M065 for a starting bid of $20 + $10 shipping. By this time I was having a racing heartbeat as I envisioned my poor Lyman 2500 once again churning dirty empty cases like a tornado. The 2500 is quite a powerful vibratory tumbler, all things considered. It will scoot around when empty as the vibratory action is potent.
I scored the two new Dayton 5M065 motors for $30 delivered. They arrived yesterday. The bolt pattern is an industry standard so it was the same on the two motors.
http://images58.fotki.com/v510/photos/4/28344/9665778/DSCF3192z-vi.jpg
Seemed to be a rivet holding the eccentric weight on the Lyman shaft so I used the Black & Decker rotary tool ($30 at Amazon and very nice!) and a 1.5" cut-off wheel to remove it so I could get to the fan.
http://images51.fotki.com/v751/photos/4/28344/9665778/DSCF3193z-vi.jpg
This is looking up inside the base of the Lyman 2500 with the inner chamber removed via 25,000 rpm and a cut-off wheel.
http://images58.fotki.com/v511/photos/4/28344/9665778/DSCF3198z-vi.jpg
The longer of the two shafts is 5/16" diameter, same as the Lyman so the Lyman fan fit right on the Dayton shaft. The fan is a friction fit so there's nothing to do but push it on. The shaft has a flat for setscrews to tighten down.
The weight was lathe turned from a piece of large threaded scrap. I guessed on the offset and thickness. It turned out to be too heavy. The Lyman eccentric weight was 1.8 oz.
http://images56.fotki.com/v124/photos/4/28344/9665778/DSCF3213tm-vi.jpg
This is what I ended up with at 2.5 oz. The heavier weight was too much for the motor. However, this thinned weight was perfectomundo. There are two 10-32 setscrews holding the weight to the shaft. One short setscrew locking the longer setscrew.
http://images17.fotki.com/v4/photos/4/28344/9665778/DSCF3225tm-vi.jpg
I had to get some 6-32 all-thread to hang the motor underneath. I left the shorter 2nd shaft on the Dayton motor so I needed to hang the motor a bit lower inside the base.
http://images116.fotki.com/v107/photos/4/28344/9665778/DSCF3226tm-vi.jpg
The studs were cut off flush with the top of the nuts.
http://images17.fotki.com/v4/photos/4/28344/9665778/DSCF3230tm-vi.jpg
The test run proved that the Dayton motor was a perfect match for the Lyman 2500. It was very robust in the tumbling action. The motor is 200 rpm faster and the weight is a wee bit heavier so it'll churn up some serious action now.
As I recall Lyman claims 1,000 .38 Special or 300 .30-06.
I took the original Lyman motor apart to see if I could determine why it went belly up. It was one of the bearings. Not completely seized but it turned very hard. The other one was loose and free. I'm not sure yet if I'll try and replace the bearings to repair the motor since I have one spare new Dayton 5M065.
http://images53.fotki.com/v138/photos/4/28344/9665778/DSCF3234tm-vi.jpg
Dutch