Sony clock radio. - UK Vintage Radio Repair and Restoration Discussion Forum

Mike Phelan · 6th Dec 2013, 9:59 am

… to continue. (Original thread gone as past its keep-by date.)

When I had a look at Studio263’s Sony clock motor the problem was the teeth on the fastest wheel were too chewed up to engage with the pinion on the rotor. That caused it to lose time.

So, we needed a new wheel. To cut a brass wheel isn’t too difficult, but to avoid constant noise was; it had to be non-metallic. Not easy obtaining a suitable material and cutting teeth on it was, so we opted for a Tufnol ready made wheel from HPC.

This was the correct diameter but too thick and required:

the old pinion (part of its wheel) turning down
reducing the wheel thickness
making a mandrel to press into its hole so the adjoining boss could be removed
broaching out the hole so the pinion could be pressed in

All done and running well!

Mike Phelan · 6th Dec 2013, 10:00 am

...

Mike Phelan · 6th Dec 2013, 10:02 am

... and finally:

Nickthedentist · 6th Dec 2013, 10:12 am

Wow, that's impressive, Mike!

I had a sneaky suspicion that if anyone could fix it, you could.

Nick.

bobbyball · 6th Dec 2013, 12:48 pm

Impressive indeed. Tim said he had sent it to Mike. He will be really pleased. The model of clock radio he has is much rarer than the later type with the numbers on drums. Well done!!

malvision · 6th Dec 2013, 1:40 pm

Wow now thats what i call skill, great work requires time & patience

Radio Wrangler · 6th Dec 2013, 8:41 pm

Nice work, just a pity it gets hidden away inside.

David

sp10mk11 · 6th Dec 2013, 10:08 pm

Bows

I am so impressed with your ability to do jobs like this, when I think in the past how I given up repairs because of similar faults to do with gear wheels etc.
So thanks for showing me that it can be done, a really nice bit of work to see.
Gary

julie_m · 7th Dec 2013, 5:54 am

That's very impressive.

Wonderful job!

Mike Phelan · 7th Dec 2013, 6:20 pm

Thanks, everyone! My trusty Unimat 3 must take some of the accolade, though. Plus the fact that I've been making and repairing clocks and radios for over half a century; for the latter, doing it for a living.

As you see I'm banned from the throwaway society; I suspect that applies to quite a few of our members, though.

electronicskip · 20th Dec 2013, 8:18 pm

very nice job indeed. I must get the crateload of old clock radios out of my loft and take a look myself to see if I can get any working.

unitaudio · 21st Dec 2013, 12:14 am

Throwaway society, ah, who needs it? Just goes to show what can be done when someone expends the time and effort and has the expertise to save what most would bin. Excellent work, sir.
Regards
Paul

crusher19860138 · 26th Dec 2013, 7:53 pm

I like the mock wood effect cabinets as opposed to the white ones as most have gone yellow by now which spoils the appearance.

6th Dec 2013, 9:59 am	#1
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Sony clock radio. … to continue. (Original thread gone as past its keep-by date.) When I had a look at Studio263’s Sony clock motor the problem was the teeth on the fastest wheel were too chewed up to engage with the pinion on the rotor. That caused it to lose time. So, we needed a new wheel. To cut a brass wheel isn’t too difficult, but to avoid constant noise was; it had to be non-metallic. Not easy obtaining a suitable material and cutting teeth on it was, so we opted for a Tufnol ready made wheel from HPC. This was the correct diameter but too thick and required: the old pinion (part of its wheel) turning down reducing the wheel thickness making a mandrel to press into its hole so the adjoining boss could be removed broaching out the hole so the pinion could be pressed in All done and running well! Attached Thumbnails __________________ Mike.

6th Dec 2013, 10:00 am	#2
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Re: Sony clock radio. ... Attached Thumbnails __________________ Mike.

6th Dec 2013, 10:02 am	#3
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Re: Sony clock radio. ... and finally: Attached Thumbnails __________________ Mike.

6th Dec 2013, 10:12 am	#4
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,846	Re: Sony clock radio. Wow, that's impressive, Mike! I had a sneaky suspicion that if anyone could fix it, you could. Nick.

6th Dec 2013, 12:48 pm	#5
bobbyball Octode Join Date: Jul 2011 Location: Stockport, Greater Manchester Posts: 1,214	Re: Sony clock radio. Impressive indeed. Tim said he had sent it to Mike. He will be really pleased. The model of clock radio he has is much rarer than the later type with the numbers on drums. Well done!! __________________ Robert

6th Dec 2013, 1:40 pm	#6
malvision Pentode Join Date: Feb 2009 Location: Wirral, Merseyside, UK. Posts: 118	Re: Sony clock radio. Wow now thats what i call skill, great work requires time & patience

6th Dec 2013, 8:41 pm	#7
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,876	Re: Sony clock radio. Nice work, just a pity it gets hidden away inside. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

6th Dec 2013, 10:08 pm	#8
sp10mk11 Octode Join Date: Feb 2009 Location: Cornwall, UK. Posts: 1,275	Re: Sony clock radio. Bows I am so impressed with your ability to do jobs like this, when I think in the past how I given up repairs because of similar faults to do with gear wheels etc. So thanks for showing me that it can be done, a really nice bit of work to see. Gary

7th Dec 2013, 5:54 am	#9
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Sony clock radio. That's very impressive. Wonderful job! __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

7th Dec 2013, 6:20 pm	#10
Mike Phelan Dekatron Join Date: Nov 2003 Location: Near Leeds, West Yorkshire, UK Posts: 4,609	Re: Sony clock radio. Thanks, everyone! My trusty Unimat 3 must take some of the accolade, though. Plus the fact that I've been making and repairing clocks and radios for over half a century; for the latter, doing it for a living. As you see I'm banned from the throwaway society; I suspect that applies to quite a few of our members, though. __________________ Mike.

20th Dec 2013, 8:18 pm	#11
electronicskip Nonode Join Date: Oct 2010 Location: Gloucester, Glos. UK. Posts: 2,150	Re: Sony clock radio. very nice job indeed. I must get the crateload of old clock radios out of my loft and take a look myself to see if I can get any working.

21st Dec 2013, 12:14 am	#12
unitaudio Heptode Join Date: Sep 2013 Location: Manchester, UK. Posts: 862	Re: Sony clock radio. Throwaway society, ah, who needs it? Just goes to show what can be done when someone expends the time and effort and has the expertise to save what most would bin. Excellent work, sir. Regards Paul

26th Dec 2013, 7:53 pm	#13
crusher19860138 Hexode Join Date: Sep 2010 Location: Stourbridge, West Midlands, UK. Posts: 434	Re: Sony clock radio. I like the mock wood effect cabinets as opposed to the white ones as most have gone yellow by now which spoils the appearance.