Michaela C Posted May 26, 2020 Report Share Posted May 26, 2020 I purchased an old two speed amaco wheel a few years ago and both speeds were WAY too fast. we replaced the motor with a variable speed motor and attached a pedal, but since the new motor has fewer RPM the wheel head is now going way too slow to throw anything. Does anyone have a suggestion on changing a gear in the gearbox or am I kind of SOL and going to have to get another different variable speed motor with more RPM like the original motor. Also if anyone has a manual for this model or knows where I can get one, that would be helpful. Thanks a bunch! Quote Link to comment Share on other sites More sharing options...
Hulk Posted May 27, 2020 Report Share Posted May 27, 2020 Hi Michaela, Kudos on motor replacement and adding a foot control! I don't have a suggestion on the gearbox - not finding any detail on the gearing. There is a 1-101 on eBay right now; they're asking a Lot of $ (imo). The original motor is AC? Varying the speed on that wouldn't be trivial. Good luck! Quote Link to comment Share on other sites More sharing options...
Michaela C Posted May 27, 2020 Author Report Share Posted May 27, 2020 Hulk, Yes my original motor was AC. That wheel on eBay is the exact same wheel that I have but there's no way someone is going to pay $2000 for it. With my wheel I'm kind of at a loss, do I potentially destroy it by opening u other gear box and try to switch out some gears ( my dad would help and he has minimal knowledge about it but he was able to rewire a motor so he might be able to get it done) or do I deal with a super slow wheel or just fork up $1200 for a new one with a warranty? I am just unsure how to proceed. Quote Link to comment Share on other sites More sharing options...
Mark C. Posted May 27, 2020 Report Share Posted May 27, 2020 Ok since you are the only one who may have done this conversion-here is some ideas 1st do you know the rpm of the ac motor you took out? next can you find out about that gearbox and the gear ratio from Amaco (still in business-call them)Get the motor and gearbox info from them. with these two facts you can figure from your new motor as you know its RPM what gearbox you may need or what the ratio is for making it go faster. I think changing that gearbox internally will be hard but a new gearbox from a supplier like Graingers is a easy fix. This wheel sounds like you have alot of $$ into it already so see what that new gearbox will cost. Keep in mind all modern wheels do not use gear boxes anymore -its belts and pulleys - for that rpm exchange -small pulley on motor large on wheelhead shaft-is that an option with your new motor and foot pedal?and foget the gearbox? to some degree you are reinventing the wheel so decieding how much more $ to throw at it is really up to you. Quote Link to comment Share on other sites More sharing options...
Michaela C Posted May 28, 2020 Author Report Share Posted May 28, 2020 Mark, The original motor RPM is 1725/1140 and the new motor is 1075. Any idea on what kind of gear box I should order? Do I just do some simple math to figure out the proper ratio for a new gearbox? Thank you for the excellent advice too! I hadn't thought of that Quote Link to comment Share on other sites More sharing options...
Mark C. Posted May 29, 2020 Report Share Posted May 29, 2020 Gearbox ratios come in all types-I never have used one so you would need to figure that out. Why not call Amaco and find out what that gearbox is (they may still have records of that) then you have a starting point as you know its not fast enough. Also get the right shaft sizes one that gearbox as well. My thought is you want a gearbox for the higher speeds as the lower ones you can skow the motor down with your foot pedal. And yes once you know the Amaco specs, simple math will tell you which direction to go. Your new motor is a bit slow (1075) so you need one that will mimic a modern wheel. While you are on the phone with Amaco ask them whats the high speed max RPM of a newer wheel-then you want a box that does that rpm and the lower speeds are from your foot pedal adjustment if that makes sense. Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted May 29, 2020 Report Share Posted May 29, 2020 On 5/27/2020 at 8:13 PM, Michaela C said: Mark, The original motor RPM is 1725/1140 and the new motor is 1075. Any idea on what kind of gear box I should order? Do I just do some simple math to figure out the proper ratio for a new gearbox? Thank you for the excellent advice too! I hadn't thought of that You can count the original gearbox ratio pretty easily, bump that up with the original RPM of the motor and you will have an understanding of the torque multiplication the thing was designed for which would lead you to a better idea of replacing it. Seems like a bit of work to me though for an old wheel. Speed control with constant torque for newer wheels is pretty nice to have. Quote Link to comment Share on other sites More sharing options...
Mark C. Posted May 29, 2020 Report Share Posted May 29, 2020 I think figuring in the cost of your foot pedal and new motor and maybe a gear box I'm thinking a new wheel may have been cheaper ?Or at least a better design as no mater what this will always be a gear box driven model. You need to decide on how much to throw at this old wheel $ wise My guess is you are in so much now you want it not to be waste of $ Quote Link to comment Share on other sites More sharing options...
Michaela C Posted May 29, 2020 Author Report Share Posted May 29, 2020 Mark, I was able to get a 1/3hp motor for about$150 and I used an industrial sewing machine pedal so that was only about $50 so depending on how much the gear box is I probably could have nearly paid for a new wheel because I paid $200 or $250. So at this point I might as well look for a new gear box and see what it costs. I just invested in a new Brent wheel because I'm going to start teaching one on one classes so hopefully I'll have two working wheels if I ever get the amaco one fixed. Quote Link to comment Share on other sites More sharing options...
Mark C. Posted May 29, 2020 Report Share Posted May 29, 2020 (edited) let us know the outcome of the Amaco repair. Brents are a solid wheel-my favorite. On another note the Brest wheels go from 0-240 RPM so thats the range you want to shoot for with the amaco Edited May 29, 2020 by Mark C. Quote Link to comment Share on other sites More sharing options...
Michaela C Posted June 4, 2020 Author Report Share Posted June 4, 2020 Unfortunately Amaco has no schematics for the original gear box so I'm going in blind to figure it out. Hopefully it all goes alright! Quote Link to comment Share on other sites More sharing options...
Mark C. Posted June 4, 2020 Report Share Posted June 4, 2020 Just count the revolutions on the input shaft and the revolutions on the output shaft-that will give you what that ratio is. It should be pretty easy from there. Quote Link to comment Share on other sites More sharing options...
Alexandro V Posted November 22, 2020 Report Share Posted November 22, 2020 If you end up wanting to sell that wheel let me know! I work at Aardvark Clay and Supplies and I’m starting to collect old ceramic things. Would love to have! Hulk 1 Quote Link to comment Share on other sites More sharing options...
Michaela C Posted November 22, 2020 Author Report Share Posted November 22, 2020 @Alexandro, I am definitely interested in selling it. I never did anything with the gearbox. I have the original motor but the new motor I bought is the one hooked up right now. Would you want both motors with it? Quote Link to comment Share on other sites More sharing options...
Nina Hoff Posted February 3, 2021 Report Share Posted February 3, 2021 Hi did you ever found a manual? Quote Link to comment Share on other sites More sharing options...
Michaela C Posted February 3, 2021 Author Report Share Posted February 3, 2021 Nina no. Even amaco was not able to send me a manual. Quote Link to comment Share on other sites More sharing options...
Dannapolis Posted June 12, 2022 Report Share Posted June 12, 2022 My wife has two of these and both wheels have now stopped moving. The motor hums but the top wheel just sits there. Do these need lubrication? Can they be lubricated? When it is said that it is direct drive what does that mean? What are the mechanics between the motor and the wheel. Thanks for your help and time! A potter needs her wheel. Quote Link to comment Share on other sites More sharing options...
PeterH Posted June 13, 2022 Report Share Posted June 13, 2022 15 hours ago, Dannapolis said: Do these need lubrication? Can they be lubricated? Gearbox oil-change mentioned in http://www.potters.org/subject46261.htm and http://www.potters.org/subject25713.htm Quote Link to comment Share on other sites More sharing options...
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