[78-L] Convert a belt drive turntable to play 78's

[David Lennick]

I forgot, in the MAD instructions you made the belt drive by swiping the 
elastic from your sister's skirt. I can still see Bob Clarke's artwork in my 
mind..great piece.

dl

On 11/24/2011 11:24 PM, Robert M. Bratcher Jr. wrote:
> Or search for a Dual 12xx (not sure of the exact model number) turntable that will play 78's then spend $50 at Garage-A-Records for the 78rpm ADC needle. Problem solved!!
>
>
>
>> ________________________________
>> From: David Lennick<dlennick at sympatico.ca>
>> To: 78-L Mail List<78-l at klickitat.78online.com>
>> Sent: Thursday, November 24, 2011 10:09 PM
>> Subject: Re: [78-L] Convert a belt drive turntable to play 78's
>>
>> So don't use untensilized half-mil Mylar (remember that stuff?)..
>>
>> dl
>>
>> On 11/24/2011 11:05 PM, Don Chichester wrote:
>>>
>>> Yes, I have.  Some belt TTs have no room at the speed change lever for a larger capstan, but some do.
>>>
>>> I took a length of reel tape, and glued it to the 45 rpm capstan pully (making sure the winding was oriented so as not to unwind when capstan was turning). I gradually spooled off what I thought to be enough tape to make the capstan drive the TT at over 78 rpm.  Then I glued the end down tight.  Checking the speed with a strobe disc, I saw I was off by a few rpm.  So I began to cut off recording tape until I reached 76 rpm (yes, 76, my choice).  Eventually I reached the length that gave me 76 rpm.  Once glued, the TT works great.  That was about 15 years ago.  Still works great!
>>>
>>> Don Chichester
>>>
>>>
>>>> Date: Thu, 24 Nov 2011 21:54:02 -0600
>>>> From: citrogsa at charter.net
>>>> To: 78-l at klickitat.78online.com
>>>> Subject: [78-L] Convert a belt drive turntable to play 78's
>>>>
>>>> Has anyone been able to successfully convert a 33/45 RPM belt drive
>>>> turntable to play 78's? It looks simple enough. One would need to slip a
>>>> larger pulley on the spindle, just over the thin end. Then you could
>>>> have 45/78 RPM. How would I calculate the proper diameter? Machine a
>>>> drum with a lock screw on it?
>>>>
>>>> --
>>>> Mark L. Bardenwerper, Sr. #:?)
>>>> Technology, thoughtfully, responsibly.
>>>> Visit me at http://citroen.cappyfabrics.com
>>>>