Diameter vs. circumferance: Pi times The Force = whatever you want it to be.
Gene Corrigan [email protected] > On May 22, 2015, at 3:52 PM, Ron Wiesen <[email protected]> wrote: > > First of all, I misspoke when I said inside diameter when I meant to say > inside circumference. > > I broke two wires during disassembly – the Service Manual for the CCR-82 does > not address the need to slide out the battery clips from the battery > compartment in order to allow sufficient movement of the main circuit board. > Nor does it mention that the black wire connected to the negative spring > terminal of the battery compartment is glued (i.e., staked) along its length > in three places to the plastic base. > > After the main circuit board and the volume control and its small circuit > board were unfastened from the plastic base, I found residue of the sub belt > on the plastic pulleys of its circuit. As yet, I’ve not removed this residue > –- perhaps I’ll apply a solvent that is safe to use on the plastic pulleys > but is effective in dissolving the residue on them. > > I removed the belt for the tape position counter and then I tied a cord > snuggly around its track and cut it in order to lay it out and measure its > length (i.e., the track circumference). The track circumference measured > 3.8125”. The existing belt dimension is .7mm thick by .7mm wide with an > inside circumference of 3.75”, which is about 98% of the track circumference. > This suggests that the belt for the tape position is somewhat stretched but > does not yet need replacement. Nevertheless, I’ll replace it because the > required disassembly effort to get at it has been expended. > > I placed an order with Studio Sound Electronics for three belts: > · SBO7.2 for the Main belt > · SBO4.7 for the Sub belt > · SBO3.7 for the Tape Position Counter belt > > Keeper of the Primordial Bit (mother of all bits), -= Ron Wiesen =- > > > From: M100 [mailto:[email protected]] On Behalf Of Paul > Pennington > Sent: Tuesday, May 19, 2015 19:48 > To: Model 100 Discussion > Subject: Re: [M100] Replacement Belts for the CCR-82 > ComputerCassetteTapeRecorder > > Ron; > > I rebuilt two CCR-82's about three years ago. The belts are available from > Studio Sound Electronics in Indiana. Their web site still appears to be > active: > > www.studiosoundelectronics.com > > These are square belts instead of round, but they work fine. You need to > order: > > SBM5.3 Belt $2.00 > SBM8.0 Belt $2.00 > > They charged me a dollar for shipping. > > If the belts have turned to black goo it is very difficult to clean the > pulleys. The manual has good instructions and an exploded view of the > chassis. > > If your time is worth anything at all it's probably better to pick up an > electronic voice recorder on eBay :-) > > Paul Pennington > Augusta, Georgia > > On Tue, May 19, 2015 at 1:47 PM, Mike Stein <[email protected]> wrote: > He did say that it was stretched... ;-) > > ----- Original Message ----- From: "John Whitton" <[email protected]> > To: "Model 100 Discussion" <[email protected]> > Sent: Tuesday, May 19, 2015 1:20 PM > > Subject: Re: [M100] Replacement Belts for the CCR-82 ComputerCassetteTape > Recorder > > > > A rare misspeak by Ron. I thought that I detected a disturbance in The > Force. ;-) > > John W. > > ------------------------------- > ----- Original Message ----- From: "Bob Pigford" <[email protected]> > To: "'Model 100 Discussion'" <[email protected]> > Sent: Tuesday, May 19, 2015 1:08 PM > Subject: Re: [M100] Replacement Belts for the CCR-82 Computer CassetteTape > Recorder > > > Great info, Ron. > I think you measured your old belt at 8" circumference, not dia. > Please let us know how it goes. > Regards, > Bob > > > >
