Hi,
I am currently designing a belt driven turntable and the motor I am planning to use is an 24 pole AC sync motor running at 250 RPM on 50 Hz. The motor will be driving an acrylic-wood combination platter weighing around 4 Kg via a silk thread.
The motor specification sheet states that the detent torque value is 60 gm-cm and the running torque value is 240 gm-cm. It also states that the HVT value is 2.0 KV (motor voltage>40V) or 0.6 KV (motor voltage<40V) for 1 min. I would like to know whether this motor is OK or not.
Best regards,
Bins.
I am currently designing a belt driven turntable and the motor I am planning to use is an 24 pole AC sync motor running at 250 RPM on 50 Hz. The motor will be driving an acrylic-wood combination platter weighing around 4 Kg via a silk thread.
The motor specification sheet states that the detent torque value is 60 gm-cm and the running torque value is 240 gm-cm. It also states that the HVT value is 2.0 KV (motor voltage>40V) or 0.6 KV (motor voltage<40V) for 1 min. I would like to know whether this motor is OK or not.
Best regards,
Bins.
mark, and binspaul
really what I am looking for is a replacement for a Premotec 9904-111-31302 as found in an Ariston RD11 (not an "S"). I have been posting in "help revive Ariston RD11s" thread. This motor issue just came up.
Maybe it's just me, but I am having some problems finding a replacement. I can try a DC type if need be, but isn't my table...so...
Mark, Altmann uses and promotes the use of steppers for turntable use if driven by a proper signal..(and the proper stepper is used...)
really what I am looking for is a replacement for a Premotec 9904-111-31302 as found in an Ariston RD11 (not an "S"). I have been posting in "help revive Ariston RD11s" thread. This motor issue just came up.
Maybe it's just me, but I am having some problems finding a replacement. I can try a DC type if need be, but isn't my table...so...
Mark, Altmann uses and promotes the use of steppers for turntable use if driven by a proper signal..(and the proper stepper is used...)
binspaul said:Mark: I think it is not a stepper motor. Can you explain me how you arrived at that statement ?
Detent Torque
Hi,
What is your opinion on the below given AIRPAX motor ? Is this one a good motor for using in a turntable ?
The motor details are as follows:
The motor technical details can be accessed at the link: http://www.farnell.com/datasheets/330534.pdf
Best regards,
Bins.
What is your opinion on the below given AIRPAX motor ? Is this one a good motor for using in a turntable ?
The motor details are as follows:
MOTOR, 240VAC, 250RPM, NO EARS
Centres, Fixing:60.2mm
Current Rating:16mA
Diameter, External:51mm
Diameter, Fixing Hole:3.5mm
Diameter, Shaft:3mm
Length / Height, External:25mm
Length, Shaft:8.2mm
Power Consumption:3.5W
Speed, No Load:250rpm
Temp, Op. Max:60°C
Temp, Op. Min:-20°C
Torque:20N-m
Voltage, Operating Nom:240V
The motor technical details can be accessed at the link: http://www.farnell.com/datasheets/330534.pdf
Best regards,
Bins.
Try here:
http://www.hurstmfg.com/hurstmfg/qseries.jsp?series=Series+A,+AB+Direct+Drive+Synchronous+Motor
These are very decent motors, and used by VPI among others. They'll ship direct from the factory, and the price is a reasonable US$60 (approximately).
-Richard
http://www.hurstmfg.com/hurstmfg/qseries.jsp?series=Series+A,+AB+Direct+Drive+Synchronous+Motor
These are very decent motors, and used by VPI among others. They'll ship direct from the factory, and the price is a reasonable US$60 (approximately).
-Richard
Hello,
I am having an AIRPAX AC Sync. motor (9904-111-31104) with me and I would like to use it for my custom turntable. It is stated in the first page of the manual that the motor works in the parallel mode (220 VAC using a 0.1uF phasing capacitor). The motor I am having is the one with solder terminals (totally 4).
Can someone help me in identifying the correct terminals and the right way to connect it ?
Best regards,
Binu Paul.
I am having an AIRPAX AC Sync. motor (9904-111-31104) with me and I would like to use it for my custom turntable. It is stated in the first page of the manual that the motor works in the parallel mode (220 VAC using a 0.1uF phasing capacitor). The motor I am having is the one with solder terminals (totally 4).
Can someone help me in identifying the correct terminals and the right way to connect it ?
Best regards,
Binu Paul.
Attachments
Hi,
I think 0.22uF is for the 990411131813 model. Please see the attached image for the 990411131104 specification details (220V AC Supply). Also, How can we identify the correct terminals (The connections and the terminals are not clear in the 990411131104 specification sheet) ?
Best regards,
Bins.
I think 0.22uF is for the 990411131813 model. Please see the attached image for the 990411131104 specification details (220V AC Supply). Also, How can we identify the correct terminals (The connections and the terminals are not clear in the 990411131104 specification sheet) ?
Best regards,
Bins.
If your place have 50hz mains, use 0.22uF for phasing cap. If not mistaken 0.1uf is for 60hz mains (USA, Japan and others)
Attachments
Try here:
Hurst Motors - Your place to find BLDC, Permanent Magnet DC Stepper and AC Synchronous
These are very decent motors, and used by VPI among others. They'll ship direct from the factory, and the price is a reasonable US$60 (approximately).
-Richard
While digging around different threads, I stumbled across this one. Very interesting stuff.
Not knowing anything about motor ratings, what are the minimum mN-M torque requirements. Found a few on the site Richard posted and they ar indeed quite reasonable priced. One is rated at 19.1 nM-m, I presume it depends on how heavy the platter is? If VPI uses them, how bad could they be? AND, how much of a difference is a DC motor going to make in a DIY turntable project? There are premade solutions out there that are DC motors and variable speed controllers for ~$200 on the low end and on up from there.
Bins, I'm watching you because we're both making a version of the Schroeder tonearm. I'm very slow thou.
Ron
Last edited:
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