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August 18, 2019, 02:36:55 PM

Author Topic: TAPE PATH KIT IS BACK!  (Read 218 times)

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Offline Doc B.

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TAPE PATH KIT IS BACK!
« on: March 28, 2019, 12:13:57 PM »
We've been getting a steady stream of inquiries about the tape path kits since we retired them a year ago. So we have decided to open an order window for a limited run of both Technics and Otari kits. That window will open Monday, April 1st and close on tax day, April 15th. If you have been wanting this kit now is your chance. If you know of a friend who wants one please tell them. We'll order up the parts on the 16th and hopefully begin shipping a week or two after that. There are no runs after this one planned for now.

https://bottlehead.com/?product=technics-rs150015201700-tape-path-modification-kit/
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline cbaudio

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Re: TAPE PATH KIT IS BACK!
« Reply #1 on: June 08, 2019, 08:20:03 PM »
I have serviced a few of the Technics 1500 series tape machines over the years (currently own a 1520) and, for as good as they are, I’ve always had a complaint about the stationary guides at the very beginning and end of the tape path. The folks at Bottlehead seem to have addressed this and some other weaknesses of the machine so, I opted in. The kit is aimed at those that have no tools, supplies or apparently any knowledge of the situation. The documentation is very well done, easy to follow, and contains some excellent advice.
For  $225.00 you get about $60.00 worth of parts and a link to download a pdf of the instructions. The first thing that I noticed is that none of the supplied bearings have any numbers or identifying marks of any kind. I thought that all bearings had a numbering system. For example, the Technics 1500 series use NSK 6052 bearings for the incoming and outgoing idlers. Could the “No Name” bearings supplied in the kit possibly be better than the NSK 6052’s which are listed as precision bearings?  Obviously, I feel somewhat cheated and am still kicking myself for not doing the research. That said, I’m going to press on and install the kit. Since I have the tools, test equipment, and expertise, I will be making both before and after electrical and mechanical measurements.  I will be happy to post the results if anyone is interested. 
The most expensive part will always fail first. Thus, protecting the main fuse.

Offline Doc B.

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Re: TAPE PATH KIT IS BACK!
« Reply #2 on: June 09, 2019, 05:32:49 AM »
The bearings we sent with your order are rated ABEC-5 the same as the bearings we have used in the kits previously. The previous bearings were 440C Martensitic stainless steel. Though corrosion resistance is good 440C bearings will tend to be slightly noisy. For this reason we are using bearings made of 52100 chrome steel. The uniform fine grain material structure makes the bearing very quiet, and one complaint we had with past kits with the SS bearings was a slight whirring noise when in fast wind or rewind.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.