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PostPosted: Mon Mar 12, 2018 12:44 am 
Retro Guru
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Joined: Tue Jul 07, 2015 10:52 am
Posts: 299
Location: Colchester, Essex
Update of the numbering with additional numbers and a number of frames coming up with sale dates bringing some more clarity. Charts will be updated again as and when further good dates come to light.

Graphs and Excel database available on this link
https://drive.google.com/drive/u/0/fold ... TNKZkN4TmM


Last edited by dwscrimshaw on Thu Apr 19, 2018 8:38 am, edited 1 time in total.

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PostPosted: Thu Mar 15, 2018 1:06 pm 
r.B.o.T.M. & P.o.T.M. Winner
r.B.o.T.M. & P.o.T.M. Winner
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Joined: Thu Jan 30, 2014 11:56 pm
Posts: 2988
Location: Cumbria land of beauty
Many Thanks for all your hard work on this Dave it has been a pleasure watching this thread evolve.

I have another frame number for you (if you haven't got it already) from my 1978 professional 015232

Clive


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 Post subject: Re:
PostPosted: Thu Mar 15, 2018 3:03 pm 
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Joined: Tue Jul 07, 2015 10:52 am
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Location: Colchester, Essex
Thanks not got this one, any change of a picture to add to the database?


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 Post subject: Re: Re:
PostPosted: Fri Mar 16, 2018 12:01 am 
r.B.o.T.M. & P.o.T.M. Winner
r.B.o.T.M. & P.o.T.M. Winner
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Joined: Thu Jan 30, 2014 11:56 pm
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Location: Cumbria land of beauty
dwscrimshaw wrote:
Thanks not got this one, any change of a picture to add to the database?


I've started a build thread for it here
http://www.retrobike.co.uk/forum/viewto ... p;t=381437


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PostPosted: Sat Mar 31, 2018 11:19 am 
Devout Dirtbag

Joined: Mon Sep 19, 2016 2:18 pm
Posts: 104
Location: Warwick
Dave,

Some excellent work and it seems to me that the analysis is now at the point where there is a consistenancy of data across the timeline of production. I mean that taking a high level view the data points of blocks of serial numbers fit the annual periods better, thanks again,

David


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PostPosted: Sat Mar 31, 2018 3:28 pm 
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Joined: Tue Jul 07, 2015 10:52 am
Posts: 299
Location: Colchester, Essex
Thanks, yes so.e key date helped improve things. Very few good reliable dates, some key ones help a lot.


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PostPosted: Thu Apr 19, 2018 7:54 am 
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Joined: Tue Jul 07, 2015 10:52 am
Posts: 299
Location: Colchester, Essex
Few corrections and new charts
Attachment:
Holdsworth Frame Numbers.PNG
Holdsworth Frame Numbers.PNG [ 55.27 KiB | Viewed 683 times ]

Attachment:
Holdsworth Frame Numbering.PNG
Holdsworth Frame Numbering.PNG [ 52.64 KiB | Viewed 683 times ]

Attachment:
Holdsworth 5 & 6 Digit Frame Number Grouping.PNG
Holdsworth 5 & 6 Digit Frame Number Grouping.PNG [ 58.29 KiB | Viewed 683 times ]

Attachment:
Holdsworth 5 Digit Frame Number Progression.PNG
Holdsworth 5 Digit Frame Number Progression.PNG [ 95.76 KiB | Viewed 683 times ]

Attachment:
Holdsworth 6 Digit Frame Number Progression.PNG
Holdsworth 6 Digit Frame Number Progression.PNG [ 91.51 KiB | Viewed 683 times ]


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PostPosted: Thu Apr 19, 2018 8:39 am 
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Joined: Tue Jul 07, 2015 10:52 am
Posts: 299
Location: Colchester, Essex
Old Chart Removed and link to Google Cloud added.

https://drive.google.com/drive/u/0/fold ... TNKZkN4TmM


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 Post subject: Re:
PostPosted: Wed Jun 06, 2018 11:05 pm 
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Joined: Mon Sep 24, 2012 9:10 pm
Posts: 1047
http://www.retrobike.co.uk/forum/viewto ... p;t=384595


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 Post subject: Re:
PostPosted: Fri Jun 08, 2018 8:39 am 
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Joined: Mon Jun 20, 2011 10:51 am
Posts: 412
Location: Bolton
Hi

Hoping I might be able to get some more information on this Holdsworth which I have inherited from my granddad.

Attachment:
Holdsworth.jpg
Holdsworth.jpg [ 456.19 KiB | Viewed 460 times ]


Based on the data provided on the graphs shown on this thread, the serial number on the steerer tube seems to place it around 1951 / 52? There is no serial number on the BB, but I haven't checked the inside of the rear dropout yet.

Attachment:
Holdsworth Steerer Tube.jpg
Holdsworth Steerer Tube.jpg [ 249.96 KiB | Viewed 460 times ]


It has an interesting seat stay, which, having looked online, I can't find which model it is. Any ideas?

Attachment:
Holdsworth Seat stay & pump holder.jpg
Holdsworth Seat stay & pump holder.jpg [ 265.09 KiB | Viewed 460 times ]


It's had a pretty poor paintjob, seeming to mimic the 1966 mistral I saw on this thread: viewtopic.php?f=12&t=381004&start=10.

The top tube is quite badly pitted and has several small dents. I'm hoping this doesn't mean the frame isn't safe to ride as I do intend to take it out occasionally.

Attachment:
Holdsworth top tube.jpg
Holdsworth top tube.jpg [ 205.42 KiB | Viewed 460 times ]


Some other photo's.

Attachment:
Holdsworth Badge (worthy).jpg
Holdsworth Badge (worthy).jpg [ 463.42 KiB | Viewed 460 times ]

Attachment:
Holdsworth Brake stay.jpg
Holdsworth Brake stay.jpg [ 218.95 KiB | Viewed 460 times ]

Attachment:
Holdsworth Dropout.jpg
Holdsworth Dropout.jpg [ 280.41 KiB | Viewed 460 times ]

Attachment:
Holdsworth Lugs.jpg
Holdsworth Lugs.jpg [ 230.52 KiB | Viewed 460 times ]


Any input would be very much appreciated.

Thanks, Joe


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