Rega Arm Drawing and Position Details Required - diyAudio
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Old 11th December 2009, 10:22 AM   #1
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Default Rega Arm Drawing and Position Details Required

I'm in the process of designing a turntable that will use a Rega tone arm (RB250). Does anyone have a CAD drawing they could send me of such an arm - Auto Cad 2000 or .dxf format preferably.

Also I know the distance from the spindle to the centre of the arm 's mount is 222mm but what is the ideal angular position? Visual it appears to be 45 degrees clockwise from the top (ie rear) but is this correct?

Thanks for any help given,

Karl
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Old 19th December 2009, 06:23 PM   #2
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Karl it makes no difference where the arm sits, 222mm is 222mm regardless, you just locate it according to how wide/square/rectangular you want to make the plinth.

you'll find a full set of measurements on vinyl engine, or at least the arm length, the counterweight stub is about 30mm long and exits from a boss roughly 12mm from the bearing centre.
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Old 19th December 2009, 07:36 PM   #3
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ArcProtractor for Rega RB-250, "WARNING" First of all, you must be absolutely sure to have the same mounting distance on your turntable than on the ArcProtractor.
MAXIMUM error on this dimension must be within +/-0.5mm. Otherwise, it is useless trying to align.

Click the image to open in full size.

Rega vs Baerwald

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Old 20th December 2009, 09:10 AM   #4
Calvin is offline Calvin  Germany
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Hi,

Im doing the same as Karl at the moment, but with an Rega300B.
So if anyony has a CAD drawing or at least a good pic I could import to CorelDraw Id be happy to receive a mail.

Thanks
Calvin
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Old 20th December 2009, 10:06 AM   #5
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Quote:
Originally Posted by Calvin View Post
Hi,

Im doing the same as Karl at the moment, but with an Rega300B.
So if anyony has a CAD drawing or at least a good pic I could import to CorelDraw Id be happy to receive a mail.

Thanks
Calvin
The Rega ArcProtractor is to use in all Rega Tonearms from RB-250 till RB-1000, please send me a pm with your e-mail will receive both ArcProtractors in zip format.

Merlin El Mago
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Old 20th December 2009, 10:42 AM   #6
EUVL is offline EUVL  Europe
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Would also appreciate a copy. Just sent PM.

Thx,
Patrick
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Old 20th December 2009, 11:03 AM   #7
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Usefull pictures to check the axis in tonearms:

Click the image to open in full size.

Click the image to open in full size.

With photo-shop programm can do this:

Click the image to open in full size.

Merlin El Mago
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Old 20th December 2009, 05:57 PM   #8
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Quote:
Originally Posted by Calvin View Post
Hi,

Im doing the same as Karl at the moment, but with an Rega300B.
So if anyony has a CAD drawing or at least a good pic I could import to CorelDraw Id be happy to receive a mail.

Thanks
Calvin
Link with all ArcProtractors & setup: http://www.ls35a.com/

Merlin El Mago
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Old 20th December 2009, 06:00 PM   #9
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Quote:
Originally Posted by EUVL View Post
Would also appreciate a copy. Just sent PM.

Thx,
Patrick
Sent.

Enjoy,
Merlin El Mago
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Old 20th December 2009, 07:34 PM   #10
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Quote:
Originally Posted by merlin el mago View Post
Link with all ArcProtractors & setup: The Unofficial LS3/5a Support Site
Merlin,

Lots of LS3/5A info there, but i'm having trouble finding a link ti the protractors?

(does remind me i have to continue pursuing a crossover for a friends bastardized LS3/5A)

dave
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