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Re: 150 watt 24 volt Scooter Motor Disassembly Problem
Between $200-$300 sounds good, but the $327 in shipping looks not so good. Think I'll pass. Got to watch eBay & Amazon now, too, because sometimes they do that as well.? Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, tabetween ke orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein)
On Sunday, November 21, 2021, 09:39:05 PM CST, Neil Morrison <neilsmorr@...> wrote:
Did some searching and found this:? Not sure how it helps yet but too cheap to not grab one. Neil ----- On Sun, Nov 21, 2021 at 7:29 PM Bill in OKC too via <wmrmeyers=[email protected]> wrote:
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Re: 150 watt 24 volt Scooter Motor Disassembly Problem
Looks like a good possibility to me. I'm in the process of trading off my Mini-Lathe, but I can easily 3D-print more mini-lathe gears.?? Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein)
On Sunday, November 21, 2021, 09:05:31 PM CST, Neil Morrison <neilsmorr@...> wrote:
On Sun, Nov 21, 2021 at 6:42 PM OldToolmaker via <old_toolmaker=[email protected]> wrote: Bill, |
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Re: 150 watt 24 volt Scooter Motor Disassembly Problem
Bill,
I have an idea I have been noodling in the back of my mind for some time. I want to design a small, compact worm drive dividing head especially for the Unimat SL. I built one for my minilathe and it has a large range of division using a 45 tooth worm. It satisfies all my needs. With it I was able to engrave 360 divisions around a degree scale.This might be a great little project. Dick |
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Re: 150 watt 24 volt Scooter Motor Disassembly Problem
Some folks want more power even when it's not necessarily a good idea. I've been hanging out with the 7x mini-lathe folks for more than a decade now, and some of those folks have put 2 & 3 HP motors on a 7x10 mini-lathe. I've not had a lot of trouble or issues with the 350 watt or nearly 1/2 HP motor that came on it, myself. And I have a 10x36 South Bend Heavy 10L that shipped from the factory with a 3/4HP motor. Yes, you can probably drive carbide tooling with a heavier motor, if the frame of the lathe will support that. Just don't crash the lathe! ;) There are other reasons besides more power, of course. Reliability, availability, and readily available spare parts, for a few examples. It can be hard and expensive to find parts for a Unimat these days. I've got a couple of deal working to get a Unimat SL for myself, after wanting one for nearly 50 years. If I can make it happen, I will get both. One seems to be working, but is pretty bare, and the other is not working, and needs a bit of TLC. I figure IF I work it right, I can have a lathe and mill both set up at one time, and not take up nearly the space my 7x10 takes. I'll be giving up the 7x10 to get the one that's not working and maybe some cash. I've priced a few of the accessories that I'd like to have for then, and I'm thinking I may just make what I need. For some other projects I have sitting on the back burner, I need a dividing head. I can get the Unimat dividing head for $139, and three of the dividing plates needed to use it for an additional $189. I can get a copy of the Brown & Sharpe #0 dividing head with plates and tailstock, for less than that. It's a little big for the milling machines I already own, and the Unimat is a little small, so I may try something else. Patience is a virtue I have a bit of trouble exhibiting, but we will see what happens... Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein) On Sunday, November 21, 2021, 11:14:38 AM CST, John Hutnick <johnhutnick@...> wrote: I also took apart one of these motors and had a similar diifficulty.? I ended up solving it with a good quality large phillips screwdriver.? I found that if I simply pushed very hard on the screw, I could defeat the magnet enough to catch a thread.? Did anyone suggest shrink tubing on the screws?? For the end mounting, I marked the spot for the second screw using a couple Uni motor mounts as a guide.? I drilled the end one drill size smaller than recommended for the tap and threaded the hole.? The motor did not fall off so far.? If it does, then a bushing. Regarding the motor topic, why all the interest in RC and spindle motors?? We have here with 150W 24V scooter motors what seems like an available, inexpensive choice that works. |
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Re: Alternative motor for the Unimat SL
On my MF70 Proxxon mini-mill I have adapted an RC brushless motor, :
Specs: Model:?PROPDRIVE v2 3536 910KV KV:?910 KV Max current:?38A ESC:?40~60A Cell count:?3s~4s Lipoly Pole Count:?14 Bolt holes:?25mm Bolt thread:?M3 Shaft:?5mm Connectors:?3.5mm Bullet Weight:?88g It needs a brushless driver and controller,(ESC) - RC also, so it is a bit more expensive option. It works with 12V power source (You will need a 40A one to be safe), 910KV means you can find the speed at any voltage by multiplying that value with voltage. At 6V you should have? 5460 rpm? and 228W (at 38A), 12V will? double theoretical power and speed. It is very compact but should need some shielding against swarf? dust, touch...,? One tutorial for a Sieg lathe is? But you can find lots on the net. RC Drone motors tend to be open construction for cooling purposes and RC cars motors are closed construction for protection. NapierDeltic |
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Re: 150 watt 24 volt Scooter Motor Disassembly Problem
I think I will epoxy an appropriately sized aluminum piece into the area that I need to ?drill and tap M5. Then turn my attention to getting the long screws lined up and tightened. At least I don¡¯t feel alone as many of you have faced the same issue. |
Bill in OKC too
OldToolmaker
NapierDeltic
Dave W
Les Orton
